Device for monitoring gas in oil of oil filling equipment

Abstract

The utility model discloses a device for monitoring gas in oil of oil-filled equipment, which belongs to the technical field of gas monitoring and comprises a machine body fixedly connected on the oil-filled equipment and a monitoring terminal fixedly connected in a monitoring room, four corners of the machine body close to the side wall of the oil-filled equipment are respectively and fixedly connected with a mounting seat, the machine body is fixedly connected on the oil-filled equipment through the four mounting seats, and the monitoring terminal is fixedly connected in the monitoring room. A plurality of electric control valve oil taking pipes are fixedly connected above the middle of the side wall, close to the oil filling equipment, of the machine body at equal intervals, and a plurality of electric control valve oil outlet pipes are fixedly connected below the middle of the side wall, close to the oil filling equipment, of the machine body at equal intervals; according to the utility model, oil samples are extracted at multiple positions, gas in oil is extracted at multiple positions, the composition and content of the gas in oil at multiple positions are detected through the infrared spectrum instrument, and then are wirelessly transmitted to the monitoring terminal for analysis, so that compared with the prior art, monitoring is realized through automatic sampling detection and remote transmission, the steps are simple, and time and labor are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas monitoring, and in particular relates to a gas monitoring device in oil of oil-filled equipment. Background Art

[0002] During the operation of oil-filled equipment such as transformers, circuit breakers and reactors, due to the aging and deterioration of oil and solid insulating materials, small amounts of gases such as hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide and carbon dioxide will be decomposed. When overheating, discharge or moisture occurs inside the oil-filled equipment, the production of these gases will increase rapidly. Excessive gas will cause operational failures of the oil-filled equipment. Therefore, regular monitoring of the composition and content of the gases dissolved in the oil is of great significance for early detection of latent faults inside the oil-filled equipment.

[0003] Chinese Patent No. 201420732931.6 discloses an online monitoring device for oil-in-gas in oil-filling equipment, which is composed of a hollow fiber permeable membrane gas collection mechanism and an oil-in-gas monitoring mechanism arranged on the oil-filling equipment, wherein the hollow fiber permeable membrane gas collection mechanism includes a metal shell protective sleeve arranged on the oil-filling equipment, a hollow fiber permeable membrane capillary arranged in the metal shell protective sleeve, an oil extraction port arranged in the metal shell protective sleeve, an air outlet arranged on the side of the metal shell protective sleeve away from the oil-filling equipment, an air collecting pipe arranged on the metal shell protective sleeve outside the air outlet, a gas collecting chamber formed between the air outlet and the air collecting pipe, an air extraction port arranged on the side of the air collecting pipe away from the metal shell protective sleeve, and the oil-in-gas monitoring mechanism includes an observation box, an air inlet arranged at one end of the observation box, a first reflector and a second reflector arranged at a vertical angle inside the observation box, two Brewster windows arranged on one side of the observation box, and a gas collecting pipe arranged on the two Brewster windows away from the observation box. A disc with multiple filters installed on the measuring box side is driven to rotate by a motor, a light source is arranged on the side of the disc away from the observation box, a photoelectric detector is arranged on one side of the observation box, and an oscilloscope connected to the photoelectric detector is arranged on the side of the observation box. When the device is working, oil is introduced through the oil intake port, and the gas in the oil is separated by the hollow fiber permeable membrane tube and enters the gas collecting chamber through the gas outlet. When it is necessary to monitor the gas in the oil of the oil-filled equipment, the gas in the gas collecting chamber is taken by aligning the sampler with the gas intake port, and then the sampler is aligned with the gas inlet to allow the gas sample to enter the observation box, and the wavelength of the light signal generated by the light source is adjusted. The light signal passes through the filter and a Brewster window to enter the observation box, and is reflected back to another Brewster window through the first reflector and the second reflector. After the light detector receives and converts it, it is transmitted to the oscilloscope for waveform display, and judgment is made based on the waveform. In this process, the filter can be switched by driving the disc to rotate by the motor to improve the adaptability of the device.

[0004] The inventors of the present application have discovered that when the above-mentioned online monitoring device for gas in oil of oil-filled equipment monitors the gas in oil of oil-filled equipment, it is necessary to first manually sample the gas, then transport it to the monitoring point, and then monitor it. The steps are relatively complicated, tedious, time-consuming and labor-intensive. Utility Model Content

[0005] In order to solve the problems raised in the above background technology, the utility model provides a gas monitoring device for oil-filled equipment, which has the characteristics of automatic sampling detection and remote transmission to realize monitoring, simple steps, time saving and labor saving.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for monitoring gas in oil of oil-filled equipment, comprising: a body fixedly connected to the oil-filled equipment and a monitoring terminal fixedly connected to a monitoring room, the body having mounting seats fixedly connected to the four corners of the side wall of the oil-filled equipment respectively, the body being fixedly connected to the oil-filled equipment through four mounting seats, the body having a plurality of oil intake pipes with electric control valves fixedly connected to the body at equal intervals near the middle and upper part of the side wall of the oil-filled equipment, the body having a plurality of oil outlet pipes with electric control valves fixedly connected to the body at equal intervals near the middle and lower part of the side wall of the oil-filled equipment, the positions of the plurality of oil intake pipes with electric control valves and the plurality of oil outlet pipes with electric control valves correspond one to one, the inside of the body having a plurality of oil chambers and accommodating chambers equally spaced from the side close to the oil-filled equipment to the side far away from the oil-filled equipment, the plurality of oil chambers corresponding one to the positions of the plurality of oil outlet pipes with electric control valves, the oil intake pipes with electric control valves and the oil outlet pipes with electric control valves at corresponding positions The oil outlet pipe of the electric control valve is connected to the oil chamber, and a plurality of gas collecting cylinders are fixedly connected at equal intervals on the top of the machine body, and the plurality of gas collecting cylinders correspond to the positions of the plurality of oil chambers one by one. A connected air inlet pipe is fixedly connected to the bottom end of the air collecting cylinder, and the bottom end of the air inlet pipe penetrates the machine body and extends into the corresponding oil chamber. A connected air outlet pipe with an electric control valve is fixedly connected to the top end of the air collecting cylinder, an infrared spectrometer is fixedly connected to one side of the accommodating chamber, and the other end of the air outlet pipe with the electric control valve penetrates the machine body and extends into the accommodating chamber and is fixedly connected to the air inlet end of the infrared spectrometer. A plurality of air outlet pipes with the electric control valve are arranged at equal intervals downward from close to to far away from the infrared spectrometer, and a wireless controller is fixedly connected to the other side of the accommodating chamber, the oil intake pipe with the electric control valve, the air outlet pipe with the electric control valve and the infrared spectrometer are electrically connected to the wireless controller, and the wireless controller is wirelessly connected to the monitoring terminal.

[0007] Furthermore, an oil-gas separation filter element is fixedly connected inside the oil chamber between the oil intake pipe with the electric control valve and the air intake pipe.

[0008] Furthermore, the length of the oil intake pipe with the electric control valve is greater than the length of the mounting seat, that is, when the body is fixedly connected to the oil filling device through four mounting seats, the oil intake pipe with the electric control valve can extend into the oil filling device, and the length of the oil outlet pipe with the electric control valve is less than the length of the mounting seat, that is, when the body is fixedly connected to the oil filling device through four mounting seats, the oil outlet pipe with the electric control valve remains in the outside world.

[0009] Furthermore, the bottom end of the oil chamber is configured to be a structure that gradually tilts downward from away from to close to the corresponding oil intake pipe with the electric control valve and the oil outlet pipe with the electric control valve, and at the same time, the inclined bottom end of the oil chamber is flush with the bottom end of the corresponding oil outlet pipe with the electric control valve.

[0010] Furthermore, a nitrogen box is fixedly connected to the interior of the accommodating cavity below the wireless controller, an air pump is fixedly connected to the interior of the accommodating cavity between the nitrogen box and the infrared spectrometer, the air inlet end of the air pump is connected to the nitrogen box and the air outlet end is connected to the air inlet end of the infrared spectrometer, and the air pump is electrically connected to the wireless controller.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model first collects oil samples at multiple locations, then collects gas in the oil at multiple locations, and then uses an infrared spectrometer to detect the composition and content of the gas in the oil at multiple locations, and then wirelessly transmits it to the monitoring terminal for analysis. Compared with the existing technology, automatic sampling and detection and remote transmission are used to realize monitoring, the steps are simple, and time and labor are saved.

[0013] 2. The utility model can clean the detection cavity of the infrared spectrometer several times during the process of detecting the composition and content of gas in oil at multiple positions, thereby ensuring the detection accuracy of the infrared spectrometer each time and improving the monitoring effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 It is a partial vertical section view of the utility model;

[0016] Figure 3 It is a vertical cross-sectional view of another perspective of the utility model;

[0017] Figure 4 It is a vertical cross-sectional view of another perspective of the utility model;

[0018] In the figure: 1. Machine body; 2. Mounting base; 3. Oil outlet pipe with electric control valve; 4. Oil intake pipe with electric control valve; 5. Monitoring terminal; 6. Oil-gas separation filter element; 7. Oil chamber; 8. Nitrogen box; 9. Accommodation chamber; 10. Air inlet pipe; 11. Air outlet pipe with electric control valve; 12. Air collecting cylinder; 13. Wireless controller; 14. Air pump; 15. Infrared spectrometer. DETAILED DESCRIPTION

[0019] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0020] Embodiment 1

[0021] See also Figure 1-4 The utility model provides the following technical solutions: a device for monitoring gas in oil of oil-filling equipment, comprising: a body 1 fixedly connected to the oil-filling equipment and a monitoring terminal 5 fixedly connected to the monitoring room, the body 1 is fixedly connected with mounting seats 2 at four corners of the side wall of the oil-filling equipment, the body 1 is fixedly connected to the oil-filling equipment through four mounting seats 2, a plurality of oil intake pipes 4 with electric control valves are fixedly connected to the body 1 at equal intervals above the middle of the side wall of the oil-filling equipment, a plurality of oil outlet pipes 3 with electric control valves are fixedly connected to the body 1 at equal intervals below the middle of the side wall of the oil-filling equipment, the plurality of oil intake pipes 4 with electric control valves and the plurality of oil outlet pipes 3 with electric control valves are in one-to-one correspondence, a plurality of oil chambers 7 and accommodating chambers 9 are opened in the body 1 at equal intervals from the side close to the oil-filling equipment to the side far away from the oil-filling equipment, the plurality of oil chambers 7 and the plurality of oil outlet pipes 3 with electric control valves are in one-to-one correspondence, the oil intake pipes 4 with electric control valves and the oil outlet pipes 3 with electric control valves at corresponding positions are connected to the oil chamber 7, the body A plurality of gas collecting cylinders 12 are fixedly connected to the top of the housing 1 at equal intervals, and the positions of the plurality of gas collecting cylinders 12 and the plurality of oil chambers 7 correspond one to one. A connected air inlet pipe 10 is fixedly connected to the bottom of the gas collecting cylinder 12, and the bottom of the air inlet pipe 10 penetrates the machine body 1 and extends into the corresponding oil chamber 7. A connected air outlet pipe 11 with an electric control valve is fixedly connected to the top of the gas collecting cylinder 12. An infrared spectrometer 15 is fixedly connected to one side of the accommodating chamber 9, and the other end of the air outlet pipe 11 with the electric control valve penetrates the machine body 1 and extends into the accommodating chamber 9 and is fixedly connected to the air inlet end of the infrared spectrometer 15. The plurality of air outlet pipes 11 with the electric control valve are arranged at equal intervals downward from close to the infrared spectrometer 15 to far away from the infrared spectrometer 15. A wireless controller 13 is fixedly connected to the other side of the accommodating chamber 9, and the oil intake pipe 4 with the electric control valve, the oil outlet pipe 3 with the electric control valve, the air outlet pipe 11 with the electric control valve and the infrared spectrometer 15 are electrically connected to the wireless controller 13, and the wireless controller 13 is wirelessly connected to the monitoring terminal 5.

[0022] In this embodiment, see the attached Figure 1-4When the device is in use, a sampling instruction is issued through the monitoring terminal 5, and the sampling instruction is received by the wireless controller 13. The wireless controller 13 controls the electric-controlled valves on the multiple oil extraction pipes 4 with electric-controlled valves to open, and the oil in the oil filling device respectively enters the corresponding oil chamber 7 through the multiple oil extraction pipes 4 with electric-controlled valves until the set time value is reached. The wireless controller 13 controls the electric-controlled valves on the multiple oil extraction pipes 4 with electric-controlled valves to close. At this time, the multiple oil chambers 7 stop filling with oil. At the same time, the oil in the multiple oil chambers 7 is located below the corresponding air inlet pipe 10. As time passes, the gas in the oil in the multiple oil chambers 7 enters the corresponding gas collecting cylinder 12 through the corresponding air inlet pipe 10, and then flows to the corresponding air outlet pipe 11 with the electric-controlled valve;

[0023] The monitoring command is issued through the monitoring terminal 5, and the monitoring command is received by the wireless controller 13. The wireless controller 13 controls the electric control valve on the uppermost outlet pipe 11 with the electric control valve to open, and the gas in the oil in the uppermost outlet pipe 11 with the electric control valve flows into the detection chamber of the infrared spectrometer 15 until the set time value is reached. The wireless controller 13 controls the electric control valve on the uppermost outlet pipe 11 with the electric control valve to close, and the infrared spectrometer 15 detects the composition and content of the gas in the oil. After the detection is completed, the gas in the oil in the detection chamber is discharged through the exhaust end, and the exhaust end can be connected to the gas processing mechanism to directly process the discharged gas and then discharge it into the environment. The detection result is transmitted to the monitoring terminal 5 by the wireless controller 13, and then the remaining outlet pipes 11 with the electric control valve, the infrared spectrometer 15 and the wireless controller 13 are operated in the same manner as above, so that the monitoring terminal 5 has a plurality of detection results of the composition and content of the gas in the oil, and the composition and content of the gas in the oil filling equipment are analyzed according to the detection results of the plurality of composition and content of the gas in the oil, and the monitoring is completed;

[0024] The oil discharge command is issued through the monitoring terminal 5, and the oil discharge command is received by the wireless controller 13. The wireless controller 13 controls the multiple electrically controlled valves with electrically controlled valve oil outlet pipes 3 to open, and the oil in the multiple oil chambers 7 is discharged through the corresponding electrically controlled valve oil outlet pipes 3. Here, the electrically controlled valve oil outlet pipes 3 can be connected to the oil collection mechanism to directly collect the discharged oil. After the oil in the multiple oil chambers 7 is discharged, the wireless controller 13 controls the multiple electrically controlled valves with electrically controlled valve oil outlet pipes 3 to close.

[0025] Specifically, an oil-gas separation filter element 6 is fixedly connected inside the oil chamber 7 between the oil intake pipe 4 with the electric control valve and the air intake pipe 10 .

[0026] In this embodiment, see the attached Figure 2-3 The oil entering the multiple oil chambers 7 is separated into oil and gas through the corresponding oil-gas separation filter element 6, and the separated gas in the oil enters the corresponding gas collecting cylinder 12 through the corresponding air inlet pipe 10, thereby improving the collection speed of the gas in the oil.

[0027] Specifically, the length of the oil inlet pipe 4 with the electric control valve is greater than the length of the mounting seat 2, that is, when the body 1 is fixedly connected to the oil filling equipment through four mounting seats 2, the oil inlet pipe 4 with the electric control valve can extend into the oil filling equipment, and the length of the oil outlet pipe 3 with the electric control valve is less than the length of the mounting seat 2, that is, when the body 1 is fixedly connected to the oil filling equipment through four mounting seats 2, the oil outlet pipe 3 with the electric control valve remains in the outside.

[0028] In this embodiment, see the attached Figure 1-2 The above structure is convenient for taking out the oil and for discharging the oil in the oil chamber 7 for corresponding treatment.

[0029] Specifically, the bottom end of the oil chamber 7 is configured to be a structure that gradually tilts downward from away from to close to the corresponding oil intake pipe 4 with an electric control valve and the oil outlet pipe 3 with an electric control valve, and at the same time, the tilted bottom end of the oil chamber 7 is flush with the bottom end of the corresponding oil outlet pipe 3 with an electric control valve.

[0030] In this embodiment, see the attached Figure 2 The above structure facilitates the discharge of the oil in the oil chamber 7 for corresponding treatment.

[0031] Embodiment 2

[0032] The difference between this embodiment and the first embodiment is that:

[0033] Specifically, a nitrogen box 8 is fixedly connected to the interior of the accommodating chamber 9 below the wireless controller 13, and an air pump 14 is fixedly connected to the interior of the accommodating chamber 9 between the nitrogen box 8 and the infrared spectrometer 15. The air inlet end of the air pump 14 is connected to the nitrogen box 8 and the air outlet end is connected to the air inlet end of the infrared spectrometer 15. The air pump 14 is electrically connected to the wireless controller 13.

[0034] In this embodiment, see the attached Figure 2 and 4 After the infrared spectrometer 15 detects the gas in the oil each time, it issues a cleaning instruction through the monitoring terminal 5, and the cleaning instruction is received by the wireless controller 13. The wireless controller 13 controls the air pump 14 to start, and the air pump 14 pumps the nitrogen in the nitrogen box 8 into the detection cavity of the infrared spectrometer 15. As the accumulated amount of nitrogen increases, the gas in the oil in the detection cavity of the infrared spectrometer 15 is squeezed out of the detection cavity through the exhaust end, and the cleaning is completed, which can ensure the accuracy of each detection of the infrared spectrometer 15;

[0035] After the infrared spectrometer 15 has completed multiple detections, a cleaning instruction is issued through the monitoring terminal 5, and the cleaning instruction is received by the wireless controller 13. The wireless controller 13 controls the air pump 14 to start, and at the same time controls the electric-controlled valves on the multiple air outlet pipes 11 with electric-controlled valves to open, and at the same time controls the electric-controlled valves on the multiple oil outlet pipes 3 with electric-controlled valves to open. The air pump 14 draws the nitrogen in the nitrogen box 8 into the detection chamber of the infrared spectrometer 15 for cleaning, and the nitrogen in the detection chamber is simultaneously discharged to the multiple air outlet pipes 11 with electric-controlled valves, the gas collecting cylinder 12, the air inlet pipe 10 and the oil outlet pipe 3 with electric-controlled valves. The gas in the oil in the multiple air outlet pipes 11 with electric-controlled valves, the gas collecting cylinder 12, the air inlet pipe 10 and the oil outlet pipe 3 with electric-controlled valves is squeezed into the oil collection mechanism to complete the cleaning.

[0036] The oil outlet pipe 3 with an electric control valve, the oil intake pipe 4 with an electric control valve, the monitoring terminal 5, the air outlet pipe 11 with an electric control valve, the wireless controller 13, the air pump 14 and the infrared spectrometer 15 are all conventional instruments. The working principle, size and model are irrelevant to the function of the present application, so they are not described in detail. The control method of the present utility model is to control the wireless controller 13 to control other structures through the monitoring terminal 5. The control circuits of the monitoring terminal 5 and the wireless controller 13 can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present utility model is mainly used to protect mechanical devices, so the present utility model will no longer explain the control method and circuit connection in detail.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas monitoring device for oil-filled equipment, characterized in that: include: A body (1) fixedly connected to the oil filling device and a monitoring terminal (5) fixedly connected to the monitoring room, the body (1) is fixedly connected to mounting seats (2) at four corners of the side wall of the oil filling device, the body (1) is fixedly connected to the oil filling device through the four mounting seats (2), the body (1) is fixedly connected to the oil filling device at equal intervals near the middle and upper part of the side wall of the oil filling device, the body (1) is fixedly connected to multiple oil intake pipes (4) with electric control valves at equal intervals near the middle and lower part of the side wall of the oil filling device, and multiple oil outlet pipes (3) with electric control valves are fixedly connected to the body (1) at equal intervals near the middle and lower part of the side wall of the oil filling device. The positions of the oil inlet pipe (4) with the electric control valve and the oil outlet pipes (3) with the electric control valve correspond to each other. The inside of the machine body (1) is provided with a plurality of oil chambers (7) and accommodating chambers (9) at equal intervals from the side close to the oil filling device to the side far away from the oil filling device. The plurality of oil chambers (7) correspond to the positions of the plurality of oil outlet pipes (3) with the electric control valve. The oil inlet pipes (4) with the electric control valve and the oil outlet pipes (3) with the electric control valve at corresponding positions are connected to the oil chambers (7). The top of the machine body (1) is fixedly connected with a plurality of gas collecting cylinders (12) at equal intervals. The gas collecting cylinder (12) corresponds to the positions of the plurality of oil chambers (7) one by one. The bottom end of the gas collecting cylinder (12) is fixedly connected to a connected air intake pipe (10). The bottom end of the air intake pipe (10) penetrates the machine body (1) and extends into the corresponding oil chamber (7). The top end of the gas collecting cylinder (12) is fixedly connected to a connected air outlet pipe (11) with an electric control valve. One side of the interior of the accommodating chamber (9) is fixedly connected to an infrared spectrometer (15). The other end of the air outlet pipe (11) with the electric control valve penetrates the machine body (1) and extends into the accommodating chamber (9) to communicate with the infrared spectrometer (15). The air inlet end of the spectrometer (15) is fixedly connected, and a plurality of air outlet pipes (11) with electric control valves are arranged at equal intervals downward from the side close to the infrared spectrometer (15) to the side far away from the infrared spectrometer (15). A wireless controller (13) is fixedly connected to the other side of the accommodating cavity (9). The oil intake pipe (4) with the electric control valve, the oil outlet pipe (3) with the electric control valve, the air outlet pipe (11) with the electric control valve and the infrared spectrometer (15) are electrically connected to the wireless controller (13), and the wireless controller (13) is wirelessly connected to the monitoring terminal (5).

2. The device for monitoring gas in oil of oil-filled equipment according to claim 1, characterized in that: An oil-gas separation filter element (6) is fixedly connected inside the oil chamber (7) between the oil intake pipe (4) with the corresponding electric control valve and the air intake pipe (10).

3. The device for monitoring gas in oil of oil-filled equipment according to claim 1, characterized in that: The length of the oil intake pipe (4) with the electric control valve is greater than the length of the mounting seat (2), that is, when the machine body (1) is fixedly connected to the oil filling device through the four mounting seats (2), the oil intake pipe (4) with the electric control valve can extend into the oil filling device, and the length of the oil outlet pipe (3) with the electric control valve is less than the length of the mounting seat (2), that is, when the machine body (1) is fixedly connected to the oil filling device through the four mounting seats (2), the oil outlet pipe (3) with the electric control valve remains outside.

4. The device for monitoring gas in oil of oil-filled equipment according to claim 1, characterized in that: The bottom end of the oil chamber (7) is arranged to be a structure that gradually tilts downward from away from to closer to the corresponding oil intake pipe (4) with an electric control valve and the oil outlet pipe (3) with an electric control valve, and the tilted bottom end of the oil chamber (7) is flush with the bottom end of the corresponding oil outlet pipe (3) with an electric control valve.

5. The device for monitoring gas in oil of oil-filled equipment according to claim 1, characterized in that: A nitrogen box (8) is fixedly connected inside the accommodating chamber (9) and located below the wireless controller (13); an air pump (14) is fixedly connected inside the accommodating chamber (9) and located between the nitrogen box (8) and the infrared spectrometer (15); an air inlet end of the air pump (14) is connected to the nitrogen box (8) and an air outlet end is connected to an air inlet end of the infrared spectrometer (15); and the air pump (14) is electrically connected to the wireless controller (13).

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