CN115133495A - Neutral point grounding mode of submerged electrode boiler - Google Patents
Neutral point grounding mode of submerged electrode boiler Download PDFInfo
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- CN115133495A CN115133495A CN202210672028.4A CN202210672028A CN115133495A CN 115133495 A CN115133495 A CN 115133495A CN 202210672028 A CN202210672028 A CN 202210672028A CN 115133495 A CN115133495 A CN 115133495A
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- 230000007935 neutral effect Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract 1
- 238000002955 isolation Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/16—Earthing arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The application discloses submergence electrode boiler neutral point grounding structure entirely, including casing and looks electrode, the looks electrode has threely, and three looks electrode mounting is in the casing, the casing is metal casing, still includes transformer and high-pressure PT CT cabinet of being qualified for the next round of competitions, the power supply side of transformer meets with the electric wire netting, the power consumption side of transformer meets with the high-pressure PT CT cabinet of being qualified for the next round of competitions through three phase lines, and three phase lines of the high-pressure PT CT cabinet of being qualified for the next round of competitions connect with the three looks electrode in the casing respectively, the high-pressure PT CT cabinet ground connection of being qualified for the next round of competitions, casing ground connection, and the earthing terminal of casing and high-pressure PT CT cabinet of being qualified for the next round of competitions meets through zero sequence current cable.
Description
Technical Field
The invention relates to the field of electric boilers, in particular to a neutral point grounding mode of an immersed electrode boiler.
Background
The electrode boiler is a common device for converting electric energy into energy, and the electric pressure used by the electrode boiler is a 10kv three-phase three-wire system power supply. The process is shown in figure 1, the power grid on the power supply side of the transformer is a three-phase four-wire system, three phase lines (respectively marked by A, B, C three letters) and a neutral line (respectively marked by letter N), and the step-down of the transformer is three phase lines (respectively marked by A, B, C three letters) without N.
The current electrode boiler (three electrodes are arranged in the electrode boiler, and the three electrodes are respectively connected with A, B, C phase lines) mounting structure is shown in the attached figure 2, the supporting seat of the electrode boiler with the structure is in position with the ground, an insulating pad is required to be arranged, water inlet and outlet pipes are required to be provided with insulating rings, the boiler is not grounded, an isolation room for preventing electric shock needs to be built, a potential difference is formed between the boiler and an outer pipeline, a water pump and a plate, and the grounding mode is a neutral point large resistance grounding mode: the zero sequence current passes through the electrolyte in the pipeline, forms a large resistor with the outer pipeline, the water pump and the plate heat exchanger, and then is grounded, and the zero sequence current flows to the bottom; the problems with this mounting structure are: when the electrode boiler is in phase loss during working, neutral point drift and large zero-sequence current can be generated, and potential difference can be generated between the electrode boiler and a high-voltage outgoing line PT/CT cabinet, so that danger is caused to operators; the zero sequence current of the electrode boiler directly moves to the ground without participating in the control of the zero sequence current of the high-voltage outgoing line CT/PT cabinet, and great potential safety hazard exists for the operation of the electrode boiler.
Disclosure of Invention
The invention provides a grounding mode of a neutral point of an immersed electrode boiler aiming at the problems.
The technical scheme adopted by the invention is as follows:
the utility model provides an submergence electrode boiler neutral point ground connection mode, includes the casing of boiler and arranges three pairs of electrodes in the casing in, and every pair of electrode includes a looks electrode and a zero position electrode that corresponds, and wherein three zero position electrodes are connected with the casing of boiler, and three pairs of electrodes adopt Y type connection method, and the casing of boiler is as the neutral point, is equipped with earth protection end and neutral point zero sequence current cable link on the casing of boiler, its characterized in that: under the condition of a three-phase three-wire system power supply, an isolation transformer does not need to be additionally arranged, the high-voltage power distribution system further comprises a high-voltage outgoing line PT/CT cabinet, three-phase power lines of the high-voltage outgoing line PT/CT cabinet are respectively connected with three phase electrodes in a boiler, the high-voltage outgoing line PT/CT cabinet is provided with an independent high-voltage power distribution room grounding device, and the resistance value of the high-voltage power distribution room grounding device is smaller than 1 ohm; and the neutral point zero sequence current cable connecting end of the shell of the boiler is connected with the grounding device of the high-voltage outgoing line PT/CT cabinet through a zero sequence current cable, the grounding protection end of the shell of the boiler is connected with an independent boiler grounding protection resistor, and the resistance value of the boiler grounding protection device is 4-5 ohms.
In the above mode, the three-phase electrode is connected with three phase lines, and the housing is equivalent to a neutral point. Therefore, in the structure, a zero sequence current cable is arranged, the high-voltage outgoing line PT/CT cabinet is subjected to grounding treatment, the zero sequence current generated by the zero sequence current cable is transmitted to a grounding device of the high-voltage outgoing line PT/CT cabinet, an independent conductive channel is provided for the zero sequence current, namely, the shell of the boiler is subjected to one-time grounding treatment, and the shell is subjected to two-time grounding treatment, and the zero sequence current flows to a low-resistance end because the grounding resistance of the high-voltage outgoing line PT/CT cabinet is smaller than that of the shell, so that the zero sequence current on the shell flows to the grounding end of the high-voltage outgoing line PT/CT cabinet. Meanwhile, the shell is grounded, so that the problem that a human body serves as a conductor when the human body contacts the shell is avoided. Meanwhile, the boiler shell is connected with the grounding end of the high-voltage outgoing line PT/CT cabinet through a zero-sequence current cable, so that the potential difference problem between electric equipment (namely an electrode boiler) and the high-voltage outgoing line PT/CT cabinet is solved, the safety problems of personnel and equipment are ensured, and an isolation transformer is not required to be configured to supply power to the electrode boiler under the condition of three-phase three-wire system power supply because the two are equipotential.
In the structure, the zero sequence current is transmitted to the grounding end of the high-voltage outgoing line PT/CT cabinet through the zero sequence current cable to provide an independent channel for the zero sequence current, so that the electrode boiler can bear certain zero sequence current when in work, meanwhile, the zero sequence current participates in zero sequence current control management generated by three-phase electrodes of the electrode boiler through a zero sequence current transformer on the high-voltage outgoing line PT/CT cabinet, when the zero sequence current is less than or equal to 30A, the boiler normally operates, and when the zero sequence current exceeds 30A, the high-voltage outgoing line cabinet directly loses power. Meanwhile, the shell of the electrode boiler in the structure is also provided with a boiler shell grounding protection grounding connection end, and the zero sequence current cable is used for connecting the boiler shell neutral point zero sequence current cable connection end with the grounding device of the high-voltage outgoing line PT/CT cabinet, so that the design can ensure that an insulating pad is not needed to be padded and an isolation room is not needed to be built when the electrode boiler is installed on the ground.
In conclusion, the grounding structure of the electrode boiler is a neutral point grounding structure: the boiler shell is provided with an independent grounding protection connection design, so that the problem of electric shock when a human body touches the shell of the electrode boiler is avoided; connecting a terminal of a zero sequence current cable of a neutral point of a boiler shell with a grounding device of a high-voltage outgoing line PT/CT cabinet by using a zero sequence current cable; the shell is connected with the grounding end of the high-voltage outgoing line PT/CT cabinet through a zero-sequence current cable, so that the potential difference problem between a boiler and the high-voltage outgoing line PT/CT cabinet is solved, and the safety problems of personnel and equipment are guaranteed; when the electrode boiler is installed on the ground, an insulating pad is not needed to be padded, an isolation room is not needed to be built, the overall size of the boiler can be reduced, the occupied area is greatly reduced, and resources are saved; the zero sequence current participates in zero sequence current control management generated by three-phase electrodes of the electrode boiler through a zero sequence current transformer on the high-voltage outgoing line PT/CT cabinet, when the zero sequence current is less than or equal to 30A, the boiler normally operates, and when the zero sequence current exceeds 30A, the high-voltage outgoing line cabinet directly loses power, the operation safety of the electrode boiler is ensured, and the possibility of personal casualty accidents is avoided. The high-voltage power supply can directly use a three-phase system to supply power without adding an isolation transformer, so that the power supply mode is greatly simple, safe and economical;
the control cabinet is a PLC control cabinet or a DCS control cabinet, the control cabinet is used for sending alarm information, when the zero sequence current transformer senses that the zero sequence current is larger than 30A, zero virtual current immediately controls the high-voltage outgoing line PT/CT cabinet to be powered off, the information is transmitted to the control cabinet, the control cabinet sends the alarm information, the electrode boiler stops working, and the protection effect is achieved on personnel and equipment.
The current transformer and the voltage transformer are arranged to monitor three wires (namely three phase wires) connecting a high-voltage outgoing line PT/CT cabinet and a phase electrode, when short circuit, overcurrent, voltage undervoltage, voltage overvoltage, phase failure and three-phase imbalance occur between the high-voltage outgoing line PT/CT cabinet and the phase electrode, the control cabinet sends corresponding alarm information, and the current transformer or the voltage transformer immediately controls the high-voltage outgoing line PT/CT cabinet to be powered off, so that the electrode boiler stops working.
Optionally, the high-voltage outgoing line PT/CT cabinet further comprises a ground resistance detector, wherein the ground resistance detector is connected with the control cabinet and is used for detecting the ground resistance of the high-voltage outgoing line PT/CT cabinet and the ground resistance of the shell.
The grounding resistance detector is specifically arranged to detect the grounding resistance of the high-voltage outgoing line PT/CT cabinet, so that the grounding resistance value of the high-voltage outgoing line PT/CT cabinet is not more than 1 omega, the grounding resistance of the shell is between 4 omega and 5 omega, and when the grounding resistance detector detects that the grounding resistance of the high-voltage outgoing line PT/CT cabinet is more than 1 omega or the resistance of the shell is more than 4 omega, the control cabinet controls the high-voltage outgoing line PT/CT cabinet to stop supplying power to the three phase electrodes, so that safety is ensured.
The invention has the beneficial effects that: the problem that a human body is used as a conductor when the human body touches the shell of the electrode boiler is avoided by adopting the grounding protection; the zero-sequence current cable is connected with the grounding end of the high-voltage outgoing line PT/CT cabinet, the neutral point is grounded, and the zero-sequence current flows to the grounding end of the high-voltage outgoing line PT/CT cabinet to provide an independent channel for the zero-sequence current; the shell is connected with the grounding end of the high-voltage outgoing line PT/CT cabinet through a zero-sequence current cable, so that the potential difference problem between a boiler and the high-voltage outgoing line PT/CT cabinet is solved, and the safety problem of personnel and equipment is ensured; when the electrode boiler is installed on the ground, an insulating pad does not need to be arranged, an isolation room does not need to be built, an isolation transformer does not need to be configured, the overall dimension of the boiler can be reduced, the occupied area is greatly reduced, and resources are saved.
Description of the drawings:
figure 1 is a schematic diagram of the wiring within a transformer,
figure 2 is a schematic diagram of the installation structure of the present electrode boiler,
fig. 3 is a schematic diagram of the principle of the neutral point grounding structure of the submerged electrode boiler.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
In the case of the example 1, the following examples are given,
referring to the attached figure 3, the neutral point grounding mode of the submerged electrode boiler comprises a boiler shell and three pairs of electrodes arranged in the boiler shell, wherein each pair of electrodes comprises a phase electrode and a corresponding zero position electrode, the three zero position electrodes are connected with the boiler shell, the three pairs of electrodes are connected in a Y shape, the boiler shell is used as a neutral point, and a grounding protection end and a neutral point zero sequence current cable connecting end are arranged on the boiler shell, and the neutral point grounding mode is characterized in that: under the condition of a three-phase three-wire system power supply, an isolation transformer is not required to be additionally arranged, the high-voltage power distribution room further comprises a high-voltage outgoing line PT/CT cabinet, three-phase power lines of the high-voltage outgoing line PT/CT cabinet are respectively connected with three phase electrodes in a boiler, the high-voltage outgoing line PT/CT cabinet is provided with an independent high-voltage power distribution room grounding device, and the resistance value of the high-voltage power distribution room grounding device is less than 1 ohm; and the neutral point zero sequence current cable connecting end of the shell of the boiler is connected with the grounding device of the high-voltage outgoing line PT/CT cabinet through a zero sequence current cable, the grounding protection end of the shell of the boiler is connected with an independent boiler grounding protection resistor through a grounding protection flat iron, and the resistance value of the boiler grounding protection device is 4-5 ohms.
In the above mode, the three-phase electrode is connected with the three phase lines, and the shell is equivalent to a neutral point. Therefore, in the structure, a zero sequence current cable is arranged, the high-voltage outgoing line PT/CT cabinet is subjected to grounding treatment, the zero sequence current generated by the zero sequence current cable is transmitted to a grounding device of the high-voltage outgoing line PT/CT cabinet, an independent conductive channel is provided for the zero sequence current, namely, the shell of the boiler is subjected to one-time grounding treatment, and the shell is subjected to two-time grounding treatment, and the zero sequence current flows to a low-resistance end because the grounding resistance of the high-voltage outgoing line PT/CT cabinet is smaller than that of the shell, so that the zero sequence current on the shell flows to the grounding end of the high-voltage outgoing line PT/CT cabinet. Meanwhile, the shell is grounded, so that the problem that a human body serves as a conductor when the human body contacts the shell is avoided. Meanwhile, the boiler shell is connected with the grounding end of the high-voltage outgoing line PT/CT cabinet through a zero-sequence current cable, so that the potential difference problem between electric equipment (namely an electrode boiler) and the high-voltage outgoing line PT/CT cabinet is solved, the safety problems of personnel and equipment are ensured, and an isolation transformer is not required to be configured to supply power to the electrode boiler under the condition of three-phase three-wire system power supply because the two are equipotential.
In the structure, the zero sequence current is transmitted to the grounding end of the high-voltage outgoing line PT/CT cabinet through the zero sequence current cable to provide an independent channel for the zero sequence current, so that the electrode boiler can bear certain zero sequence current when in work, meanwhile, the zero sequence current participates in zero sequence current control management generated by three-phase electrodes of the electrode boiler through a zero sequence current transformer on the high-voltage outgoing line PT/CT cabinet, when the zero sequence current is less than or equal to 30A, the boiler normally operates, and when the zero sequence current exceeds 30A, the high-voltage outgoing line cabinet directly loses power. Meanwhile, the shell of the electrode boiler in the structure is also provided with a boiler shell grounding protection grounding connection end, and the zero sequence current cable is used for connecting the boiler shell neutral point zero sequence current cable connection end with the grounding device of the high-voltage outgoing line PT/CT cabinet, so that the design can ensure that an insulating pad is not needed to be padded and an isolation room is not needed to be built when the electrode boiler is installed on the ground.
In conclusion, the grounding structure of the electrode boiler is neutral point grounding: the boiler shell is provided with an independent grounding protection connection design, so that the problem of electric shock when a human body touches the shell of the electrode boiler is avoided; connecting a terminal of a zero sequence current cable of a neutral point of a boiler shell with a grounding device of a high-voltage outgoing line PT/CT cabinet by using a zero sequence current cable; the shell is connected with the grounding end of the high-voltage outgoing line PT/CT cabinet through a zero-sequence current cable, so that the potential difference problem between a boiler and the high-voltage outgoing line PT/CT cabinet is solved, and the safety problems of personnel and equipment are guaranteed; when the electrode boiler is installed on the ground, an insulating pad is not needed to be arranged, an isolation room is not needed to be built, the overall size of the boiler can be reduced, the occupied area is greatly reduced, and resources are saved; the zero sequence current participates in zero sequence current control management generated by three-phase electrodes of the electrode boiler through a zero sequence current transformer on the high-voltage outgoing line PT/CT cabinet, when the zero sequence current is less than or equal to 30A, the boiler normally operates, and when the zero sequence current exceeds 30A, the high-voltage outgoing line cabinet directly loses power, the operation safety of the electrode boiler is ensured, and the possibility of personal casualty accidents is avoided. The high-voltage power supply can directly use a three-phase system to supply power without adding an isolation transformer, so that the power supply mode is greatly simple, safe and economical;
the control cabinet is a PLC control cabinet or a DCS control cabinet, the control cabinet is used for sending alarm information, when the zero sequence current transformer senses that the zero sequence current is larger than 30A, zero virtual current immediately controls the high-voltage outgoing line PT/CT cabinet to be powered off, the information is transmitted to the control cabinet, the control cabinet sends the alarm information, the electrode boiler stops working, and the protection effect is achieved on personnel and equipment. And the PLC control cabinet or the DCS control cabinet transmits corresponding information to the high-voltage outgoing line PT/CT cabinet through the signal feedback line.
The current transformer and the voltage transformer are arranged to monitor three wires (namely three phase wires) connecting a high-voltage outgoing line PT/CT cabinet and a phase electrode, when short circuit, overcurrent, voltage undervoltage, voltage overvoltage, phase failure and three-phase imbalance occur between the high-voltage outgoing line PT/CT cabinet and the phase electrode, the control cabinet sends corresponding alarm information, and the current transformer or the voltage transformer immediately controls the high-voltage outgoing line PT/CT cabinet to be powered off, so that the electrode boiler stops working.
The high-voltage outgoing line PT/CT cabinet is characterized by further comprising a ground resistance detector, wherein the ground resistance detector is connected with the control cabinet and is used for detecting the ground resistance of the high-voltage outgoing line PT/CT cabinet and the ground resistance of the shell.
The grounding resistance detector is specifically arranged to detect the grounding resistance of the high-voltage outgoing line PT/CT cabinet, the grounding resistance value of the high-voltage outgoing line PT/CT cabinet is not more than 1 omega, the grounding resistance of the shell is between 4 omega and 5 omega, and when the grounding resistance of the high-voltage outgoing line PT/CT cabinet detected by the grounding resistance detector is more than 1 omega or the resistance of the shell is more than 4 omega, the control cabinet controls the high-voltage outgoing line PT/CT cabinet to stop supplying power to the three phase electrodes, so that safety is ensured.
Example 2
A mounting structure of a full submerged electrode boiler adopts a neutral point grounding mode of the submerged electrode boiler as shown in embodiment 1.
Example 3
The neutral point grounding installation structure of the totally-submerged electrode steam boiler adopts the neutral point grounding mode of the submerged electrode boiler shown in the embodiment 1, and a phase electrode in a shell is used for heating water in the shell into steam.
Example 4
The neutral point grounding installation structure of the boiler with the fully submerged electrodes adopts the neutral point grounding structure of the boiler with the fully submerged electrodes shown in the embodiment 1, and phase electrodes in a shell are used for heating and increasing the temperature of water in the shell.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, which is defined by the claims and their equivalents, and can be directly or indirectly applied to other related fields of technology.
Claims (3)
1. A neutral point grounding mode of an immersed electrode boiler comprises a shell of the boiler and three pairs of electrodes arranged in the shell, wherein each pair of electrodes comprises a phase electrode and a corresponding zero position electrode, the three zero position electrodes are connected with the shell of the boiler, the three pairs of electrodes adopt a Y-shaped connection method, the shell of the boiler is used as a neutral point, and a grounding protection end and a neutral point zero sequence current cable connecting end are arranged on the shell of the boiler The zero sequence current passing cable is connected, the grounding protection end of the shell of the boiler is connected with an independent boiler grounding protection resistor, and the resistance value of the boiler grounding protection device is 4-5 ohms.
2. The neutral point grounding mode of the submerged electrode boiler as recited in claim 1, further comprising a PLC control cabinet or a DCS control cabinet, wherein a zero sequence current transformer, a current transformer and a voltage transformer are arranged in the high voltage outgoing line PT/CT cabinet, and the zero sequence current transformer is used for zero sequence current protection of three-phase electrodes; the current transformer is used for short circuit and overcurrent protection of the three-phase electrode, the voltage transformer is used for undervoltage, overvoltage, open-phase and three-phase unbalance protection of the three-phase electrode, the PLC control cabinet or the DCS control cabinet participates in alarming of the zero sequence current transformer, the current transformer and the voltage transformer, and the high-voltage outlet cabinet PT/CT cabinet grounding resistance value is detected and managed.
3. The neutral point grounding mode of the submerged electrode boiler as claimed in claim 2, wherein a grounding resistance detector is arranged in the PLC control cabinet or the DCS control cabinet, the grounding resistance detector is used for detecting the resistance value of the high voltage outlet PT/CT cabinet, and whether power is supplied to the three-phase electrode of the boiler is determined according to the detected resistance value.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410548118.1A CN118380958A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system structure based on high-voltage distribution room grounding device |
| CN202210672028.4A CN115133495B (en) | 2022-06-14 | 2022-06-14 | Neutral point grounding mode of submerged electrode boiler |
| CN202410548121.3A CN118224587A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210672028.4A CN115133495B (en) | 2022-06-14 | 2022-06-14 | Neutral point grounding mode of submerged electrode boiler |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410548118.1A Division CN118380958A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system structure based on high-voltage distribution room grounding device |
| CN202410548121.3A Division CN118224587A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system mounting structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115133495A true CN115133495A (en) | 2022-09-30 |
| CN115133495B CN115133495B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210672028.4A Active CN115133495B (en) | 2022-06-14 | 2022-06-14 | Neutral point grounding mode of submerged electrode boiler |
| CN202410548118.1A Pending CN118380958A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system structure based on high-voltage distribution room grounding device |
| CN202410548121.3A Pending CN118224587A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system mounting structure |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
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| CN202410548118.1A Pending CN118380958A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system structure based on high-voltage distribution room grounding device |
| CN202410548121.3A Pending CN118224587A (en) | 2022-06-14 | 2022-06-14 | Full-submerged electrode boiler system mounting structure |
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| CN212806051U (en) * | 2020-08-21 | 2021-03-26 | 浙江特富发展股份有限公司 | Center shielding insulation high-voltage electrode hot water boiler |
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2022
- 2022-06-14 CN CN202210672028.4A patent/CN115133495B/en active Active
- 2022-06-14 CN CN202410548118.1A patent/CN118380958A/en active Pending
- 2022-06-14 CN CN202410548121.3A patent/CN118224587A/en active Pending
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|---|---|---|---|---|
| FR705777A (en) * | 1930-11-15 | 1931-06-12 | Joya Ets | Improvements made to electric boilers with high or low voltage electrodes to make their operation automatic |
| FR2011638A1 (en) * | 1968-06-25 | 1970-03-06 | Nuova Moderna Di Zerbini | |
| CH657689A5 (en) * | 1985-09-10 | 1986-09-15 | Sulzer Ag | Electrode boiler |
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| CN107869844A (en) * | 2017-10-31 | 2018-04-03 | 北京动力港科技有限公司 | High-voltage electrode hot-water boiler |
| CN212806051U (en) * | 2020-08-21 | 2021-03-26 | 浙江特富发展股份有限公司 | Center shielding insulation high-voltage electrode hot water boiler |
| CN216056323U (en) * | 2021-08-25 | 2022-03-15 | 长江勘测规划设计研究有限责任公司 | Electrode type electric boiler's ground protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118380958A (en) | 2024-07-23 |
| CN115133495B (en) | 2024-05-28 |
| CN118224587A (en) | 2024-06-21 |
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