CN220120194U - Ultrahigh-voltage transformer oil level measuring device - Google Patents
Ultrahigh-voltage transformer oil level measuring device Download PDFInfo
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- CN220120194U CN220120194U CN202321657935.8U CN202321657935U CN220120194U CN 220120194 U CN220120194 U CN 220120194U CN 202321657935 U CN202321657935 U CN 202321657935U CN 220120194 U CN220120194 U CN 220120194U
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- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
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- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 239000011159 matrix material Substances 0.000 description 1
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Abstract
The utility model discloses an ultrahigh voltage transformer oil level measuring device which comprises a measuring joint, a temperature sensor, a pressure sensor and a measuring shell, wherein the measuring joint and the measuring shell are in a split state, a measuring cavity is arranged in the measuring joint, an equipment cavity is arranged in the measuring shell, and the temperature sensor and the pressure sensor are arranged in the measuring cavity and are electrically connected with a controller in the equipment cavity through a cable penetrating through the measuring joint and the measuring shell; the measuring joint and the measuring shell are in a split state, the sensor in the measuring joint detects the temperature and the pressure of the transformer oil and sends the temperature and the pressure to the controller in the measuring shell through the cable to form the liquid level of the transformer oil and digitally display the liquid level, so that the separated fixation of measurement and display control is realized, the operation and maintenance personnel are not required to climb up and down, the device is very convenient, the efficiency is high, and the device can be used for correcting the reading of the traditional oil level gauge.
Description
Technical field:
the utility model relates to the field of power supply and transformation overhaul, in particular to an ultrahigh-voltage transformer oil level measuring device.
The background technology is as follows:
in the safe operation of the power grid, the transformer substation is a key link, and the operation state of the transformer substation determines the normal and stable operation of the whole power system. Transformers are key equipment of a transformer substation, and are very many in various monitoring equipment and different in functions. The transformer oil is very critical to the normal operation of the transformer, and the transformer oil mainly has the functions of insulation, heat dissipation and arc extinction. If the oil level is seriously insufficient, the coil iron core and the tapping switch of the transformer are exposed in the air, once the transformer is damped, the insulation performance is reduced, even insulation is broken down when the transformer is seriously burned, a light person can also make gas protection act, if the transformer runs at a long-term position and at a low oil level, the breathing space is increased, the contact surface between the air and the transformer oil is increased, the oil oxidation speed is increased, the contents of moisture and other dust impurities are increased, and the transformer also is a potential safety hazard. If the oil level is too high, the breathing space becomes small, and oil overflows outwards when serious, so that the oil level is also a potential safety hazard. It follows that the oil level of transformer is particularly important for transformers.
In order to make the transformer oil tank full of oil under any air temperature and running condition and prevent the volume of the transformer oil from expanding or shrinking along with the change of the oil temperature, the transformer needs to be provided with a conservator. The oil conservator has the functions of oil storage and oil supplement, and can ensure that the oil tank is filled with oil. The contact surface between the transformer body and the air is reduced, and the degradation speed of the oil is slowed down.
The side of the oil conservator is provided with an oil level gauge, so that the change of the oil level can be monitored. The commonly used oil level gauge is of the pointer type, the floating ball type and the like.
(1) The pointer type oil level gauge is generally provided with three normal oil level lines at 30 ℃, +20 ℃, +40 ℃, and whether oil filling and oil discharging are needed can be judged according to the three marks; the designation +40 ℃ indicates the maximum limit line of the oil level in full-load operation of the transformer at the installation site at an ambient temperature of +40 ℃, beyond which the oil level must not exceed, and if the oil temperature is +20° in the stopped state, the sign that the oil level of the oil level gauge should not be higher than +20° is checked. -30 ℃ means a low oil level line for the space-borne transformer at-30 ℃ and must not be below this line, if the oil level is too low, it should be refueled.
(2) The float type oil level gauge works based on the principle of suspension, wherein a float is arranged in the oil level gauge, when the oil level reaches the float, the float is provided with a mark, such as green, and the other mark, such as red, is not provided. The floating ball type oil level gauge changes along with the change of the oil level, and the floating ball changes up and down.
The two oil level gauges are commonly used transformer oil level gauges of a transformer substation, and most transformer substations still use the two transformer oil level gauges at present, so that the transformer oil level gauges are inconvenient to use for operation and maintenance personnel to observe and record the oil level, judge whether to supplement transformer oil and observe whether the transformer oil is in a safe oil level or not in daily work.
The utility model comprises the following steps:
in order to solve the technical problems, the utility model provides an ultrahigh-pressure transformer oil level measuring device which solves the problems that an operator cannot conveniently observe and record the oil level, judge whether to supplement transformer oil and observe whether the transformer oil is at a safe oil level in daily work by using the conventional oil level measuring device.
In order to solve the technical problems, the utility model provides a technical scheme that: the utility model provides a superhigh pressure transformer oil level measuring device, includes measuring joint, temperature sensor and pressure sensor and measures the casing, characterized by: the measuring connector and the measuring shell are in a split state, a measuring cavity is arranged in the measuring connector, an equipment cavity is arranged in the measuring shell, and the temperature sensor and the pressure sensor are arranged in the measuring cavity and are electrically connected with a controller in the equipment cavity through a cable penetrating through the measuring connector and the measuring shell;
the measuring joint comprises a quick-connection nut and a quick-connection shell, the measuring cavity is positioned in the quick-connection shell, the quick-connection nut is of a hollow structure, and the quick-connection shell is in threaded connection with an oil taking port of the oil conservator through the quick-connection nut so that the oil conservator is communicated with the measuring cavity;
the measuring shell comprises a base and a cover body, wherein the cover body is arranged on an opening of the base in a covering mode and detachably connected through a screw, the inside of the cover body is provided with the equipment cavity, the controller is electrically connected with a display, a key, a power supply and a power switch Guan Hesheng optical alarm which are positioned in the equipment cavity, and the audible and visual alarm, the display, the key and the power switch are embedded into the measuring shell and extend out of the outer side of the measuring shell.
Further, through holes for the cable to penetrate are formed in the measuring connector and the measuring shell, and waterproof plugs are arranged at the through holes.
Further, the quick-connection shell comprises an end cover, a tail cover and a connecting body, two ends of the connecting body are respectively in threaded connection with the end cover and the tail cover, the measuring cavity is divided into a front cavity and a rear cavity which are not communicated with each other, the temperature sensor and the pressure sensor are located in the rear cavity and fixed on the connecting body, detection parts of the temperature sensor and the pressure sensor extend into the front cavity, and the front cavity is communicated with the quick-connection nut.
Further, sealing gaskets are arranged at the screwed joint of the connecting body and the end cover and the tail cover and the screwed joint of the quick-connection nut and the end cover.
The beneficial effects of the utility model are as follows:
1. the measuring joint and the measuring shell are in a split state, the sensor in the measuring joint detects the temperature and the pressure of the transformer oil and sends the temperature and the pressure to the controller in the measuring shell through the cable to form the liquid level of the transformer oil and digitally display the liquid level, so that the separated fixation of measurement and display control is realized, the operation and maintenance personnel are not required to climb up and down, the device is very convenient, the efficiency is high, and the device can be used for correcting the reading of the traditional oil level gauge.
2. According to the quick-connection shell, the quick-connection nut is detachably and quickly connected with the oil discharge port of the transformer, so that the oil conservator is communicated with the measuring cavity in the quick-connection shell to form a communicating vessel, the structure of the existing oil conservator is not changed, the detection of the pressure and the temperature of transformer oil is realized, and the operation is convenient.
3. In the utility model, the base and the cover body are detachably connected to form the equipment cavity for accommodating the controller, the display, the keys, the power supply and the power switch, so that the storage protection of the electrical equipment is realized, meanwhile, the power switch realizes the power supply of the power supply, the keys realize the adjustment of parameters, and the display is used for displaying detection information and the power supply provides electric energy.
4. According to the utility model, through holes for the cables to penetrate are formed in the measuring connector and the measuring shell, and waterproof plugs are arranged at the through holes, so that rainwater is prevented from entering the measuring connector and the measuring shell, meanwhile, the cables with different lengths can be replaced at any time according to the installation distance between the measuring connector and the measuring shell through quick connection of the waterproof plugs.
5. The quick-connection shell comprises the end cover, the tail cover and the connecting body which are sequentially connected in a screwed mode, the detection cavity is divided into the front cavity and the rear cavity which are not communicated, the temperature sensor and the pressure sensor are stored in the rear cavity, only the detection part of the sensor extends into the front cavity, the temperature and the pressure are detected, meanwhile, the sensor is prevented from being damaged due to the fact that the sensor is completely immersed into transformer oil, and the sensor is convenient to assemble, disassemble and replace.
6. The arrangement of the sealing gasket at the joint increases the tightness of the joint, ensures the sealing effect, reduces the entry of foreign matters such as external dust, rainwater and the like as much as possible, and influences the detection stability.
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Description of the drawings:
in order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the description below are only ten of the utility model and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic structural view of the measuring joint.
Fig. 3 is a circuit diagram of a controller according to the present utility model.
Fig. 4 is a circuit diagram of the JTAG module of the present utility model.
FIG. 5 is a circuit diagram of a BOOT module of the present utility model.
Fig. 6 is a circuit diagram of an audible and visual alarm of the present utility model.
Fig. 7 is a circuit diagram of a key according to the present utility model.
Fig. 8 is a circuit diagram of a sensor of the present utility model.
Fig. 9 is a circuit diagram of a display according to the present utility model.
Fig. 10 is a circuit diagram of the power supply of the present utility model.
In the figure, a 1-temperature sensor, a 2-pressure sensor, a 3-measuring connector, a 4-measuring shell, a 5-cable, a 6-display, 7-keys, an 8-power switch, a 9-waterproof plug and a 10-audible and visual alarm are shown;
31-quick-connection nuts; 32-quick-connect housing; 321-end caps, 322-tail caps, 323-connectors;
41-base, 42-cover, 43-screw.
The specific embodiment is as follows:
embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. While the utility model is susceptible of embodiment in the drawings, it is to be understood that the utility model may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided to provide a more thorough and complete understanding of the utility model. It should be understood that the drawings and embodiments of the utility model are for illustration purposes only and are not intended to limit the scope of the present utility model.
It should be understood that the steps recited in the method embodiments of the present utility model may be performed in a different order. Furthermore, method embodiments may include additional steps omitting the execution of the illustrated steps. The scope of the utility model is not limited in this respect.
The names of messages or information interacted between the devices in the embodiments of the present utility model are for illustrative purposes only and are not intended to limit the scope of such messages or information.
Example 1
As shown in fig. 1 to 10, an ultrahigh voltage transformer oil level measuring device comprises a measuring joint 3, a temperature sensor 1 (thermistor), a pressure sensor 2 (ceramic pressure sensor) and a measuring shell 4, wherein the measuring joint 3 and the measuring shell 4 are in a split state, a measuring cavity is arranged in the measuring joint 3, a device cavity is arranged in the measuring shell 4, the temperature sensor 1 and the pressure sensor 2 are arranged in the measuring cavity, and the measuring cavity is electrically connected with a controller in the device cavity through a cable 5 penetrating through the measuring joint 3 and the measuring shell 4; the measuring joint 3 and the measuring shell 4 are in a split state, the sensor in the measuring joint 3 detects the temperature and the pressure of transformer oil, and the sensor is sent into the controller in the measuring shell 4 through the cable 5 to form the liquid level of the transformer oil and digitally display the liquid level, so that the measurement and the display control are separately fixed, the operation and maintenance personnel are not required to climb up and down, the device is very convenient, the efficiency is high, and the device can be used for correcting the reading of the traditional oil level gauge.
The measuring joint 3 comprises a quick-connection nut 31 and a quick-connection shell 32, a measuring cavity is positioned in the quick-connection shell 32, the quick-connection nut 31 is of a hollow structure, and the quick-connection shell 32 is in threaded connection with an oil taking port of the oil conservator through the quick-connection nut 31 so that the oil conservator is communicated with the measuring cavity; the quick-connection shell 32 can be detached and quickly connected with an oil discharge port of the transformer through the quick-connection nut 31, so that a measuring cavity in the quick-connection shell 32 is communicated with a measuring cavity to form a communicating vessel, the structure of the existing conservator is not changed, and the detection of transformer oil pressure and temperature is realized, and the operation is convenient.
The measuring housing 4 comprises a base 41 and a cover 42, the cover 42 is arranged on an opening of the base 41 in a covering way and is detachably connected through a screw 43, so that a device cavity is formed in the cover, a controller (TMS 320F 28335) is electrically connected with a display 6, a key 7 (a matrix key is adopted), a power supply, a power switch 8 and an audible and visual alarm 10 (which are formed by two parts of an LED and a buzzer) which are positioned in the device cavity, and the audible and visual alarm 10, the display 6, the key 7 and the power switch 8 are embedded into the measuring housing 4 and extend out of the measuring housing 4; the base 41 and the cover 42 are detachably connected to form a device cavity for accommodating the controller, the display 6 (LCD 1602 liquid crystal display), the key 7, the power supply and the power switch 8, storage protection of the electrical device is achieved, meanwhile, the power switch 8 supplies power to the power supply, the key 7 adjusts parameters, the display 6 is used for displaying detection information, the power supply provides electric energy, and the audible and visual alarm 10 is used for performing audible and visual alarm when the detection value is larger than the parameters set by the key 7.
Example two
As shown in fig. 1 to 10, this embodiment is obtained by describing in detail the technologies such as the quick-connect housing 32 based on the first embodiment, and other technical features are the same as those of the first embodiment, and the details are not repeated herein, wherein the difference between this embodiment and the first embodiment is that: the quick-connection shell 32 comprises an end cover 321, a tail cover 322 and a connecting body 323, wherein two ends of the connecting body 323 are respectively in threaded connection with the end cover 321 and the tail cover 322, a measuring cavity is divided into a front cavity and a rear cavity which are not communicated with each other, the temperature sensor 1 and the pressure sensor 2 are positioned in the rear cavity and fixed on the connecting body 323, the detection parts of the temperature sensor 1 and the pressure sensor 2 extend into the front cavity, and the front cavity is communicated with the quick-connection nut 31.
In this embodiment, the quick-connection housing 32 is composed of an end cover 321, a tail cover 322 and a connecting body 323 which are sequentially screwed, and the detection cavity is divided into a front cavity and a rear cavity which are not communicated, so that the temperature sensor 1 and the pressure sensor 2 are stored in the rear cavity, only the detection part of the sensor extends into the front cavity, the temperature and the pressure are detected, the sensor is prevented from being damaged when the sensor is completely immersed into transformer oil, and the sensor is convenient to assemble, disassemble and replace.
Example III
As shown in fig. 1 to 10, the present embodiment is obtained by adding a waterproof plug 9, a sealing gasket, and other technologies based on the second embodiment, and other technical features are the same as those of the second embodiment, and the details are not repeated herein, wherein the difference between the present embodiment and the second embodiment is that: the measuring joint 3 and the measuring shell 4 are respectively provided with a through hole for the cable 5 to penetrate, and the through holes are provided with waterproof plugs 9; sealing gaskets are arranged at the screwed joint of the connecting body 323 and the end cover 321 and the tail cover 322 and at the screwed joint of the quick-connection nut 31 and the end cover 321.
In the embodiment, through holes for the cable 5 to penetrate are formed in the measuring connector 3 and the measuring shell 4, and waterproof plugs 9 are arranged at the through holes, so that the cable 5 with different lengths can be replaced at any time according to the installation distance between the measuring connector 3 and the measuring shell 4 while rainwater is prevented from entering the measuring connector 3 and the measuring shell 4 and is quickly connected through the waterproof plugs 9; the sealing gasket at the joint is arranged to increase the sealing performance of the joint, ensure the sealing effect, reduce the entry of foreign matters such as external dust, rainwater and the like as much as possible, and influence the detection stability.
The application process of the technical scheme comprehensively formed by the embodiment comprises the following steps: the quick-connection shell 32 is communicated with the oil discharge port of the transformer through a quick nut, a communicating vessel is formed between the front cavity and the conservator, the measurement shell 4 is arranged at a position convenient for personnel to operate, the sensor and the controller are electrically connected through the cable 5 and the waterproof plug 9, the temperature sensor 1 and the pressure sensor 2 detect the temperature and the pressure of transformer oil entering the front cavity, detection signals are sent to the controller through the cable 5, and then detection information is displayed by the display 6 for personnel to watch.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (4)
1. The utility model provides a superhigh pressure transformer oil level measuring device, includes measuring joint, temperature sensor and pressure sensor and measures the casing, characterized by: the measuring connector and the measuring shell are in a split state, a measuring cavity is arranged in the measuring connector, an equipment cavity is arranged in the measuring shell, and the temperature sensor and the pressure sensor are arranged in the measuring cavity and are electrically connected with a controller in the equipment cavity through a cable penetrating through the measuring connector and the measuring shell;
the measuring joint comprises a quick-connection nut and a quick-connection shell, the measuring cavity is positioned in the quick-connection shell, the quick-connection nut is of a hollow structure, and the quick-connection shell is in threaded connection with an oil taking port of the oil conservator through the quick-connection nut so that the oil conservator is communicated with the measuring cavity;
the measuring shell comprises a base and a cover body, wherein the cover body is arranged on an opening of the base in a covering mode and detachably connected through a screw, the inside of the cover body is provided with the equipment cavity, the controller is electrically connected with a display, a key, a power supply and a power switch Guan Hesheng optical alarm which are positioned in the equipment cavity, and the audible and visual alarm, the display, the key and the power switch are embedded into the measuring shell and extend out of the outer side of the measuring shell.
2. The ultrahigh voltage transformer oil level measuring device according to claim 1, wherein: the measuring connector and the measuring shell are respectively provided with a through hole for the cable to penetrate, and waterproof plugs are arranged at the through holes.
3. The ultrahigh voltage transformer oil level measuring device according to claim 2, wherein: the quick-connection shell comprises an end cover, a tail cover and a connector, wherein two ends of the connector are respectively in threaded connection with the end cover and the tail cover, the measuring cavity is divided into a front cavity and a rear cavity which are not communicated with each other, the temperature sensor and the pressure sensor are positioned in the rear cavity and fixed on the connector, detection parts of the temperature sensor and the pressure sensor extend into the front cavity, and the front cavity is communicated with the quick-connection nut.
4. A device for measuring the oil level of an ultra-high voltage transformer according to claim 3, wherein: sealing gaskets are arranged at the screwed joint of the connecting body and the end cover and the tail cover and the screwed joint of the quick-connection nut and the end cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321657935.8U CN220120194U (en) | 2023-06-27 | 2023-06-27 | Ultrahigh-voltage transformer oil level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321657935.8U CN220120194U (en) | 2023-06-27 | 2023-06-27 | Ultrahigh-voltage transformer oil level measuring device |
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| Publication Number | Publication Date |
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| CN220120194U true CN220120194U (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321657935.8U Active CN220120194U (en) | 2023-06-27 | 2023-06-27 | Ultrahigh-voltage transformer oil level measuring device |
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| CN (1) | CN220120194U (en) |
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2023
- 2023-06-27 CN CN202321657935.8U patent/CN220120194U/en active Active
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