CN113153216A - Power supply control device, system and method for natural gas wellhead emergency shut-off valve - Google Patents
Power supply control device, system and method for natural gas wellhead emergency shut-off valve Download PDFInfo
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- CN113153216A CN113153216A CN202110439847.XA CN202110439847A CN113153216A CN 113153216 A CN113153216 A CN 113153216A CN 202110439847 A CN202110439847 A CN 202110439847A CN 113153216 A CN113153216 A CN 113153216A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 239000003345 natural gas Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000004891 communication Methods 0.000 claims abstract description 65
- 239000002343 natural gas well Substances 0.000 claims abstract description 45
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- Mining & Mineral Resources (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The present invention relates to a power supply control technique. The invention provides a power supply control device, a system and a method for an emergency shutoff valve of a natural gas wellhead, aiming at solving the problem that the power consumption of the existing emergency shutoff valve of the natural gas wellhead is larger, and the technical scheme can be summarized as follows: the power supply control device for the natural gas wellhead emergency block valve comprises a first communication module, a second communication module, a processing module and a power supply module, wherein the first communication module, the second communication module and the power supply module are respectively connected with the processing module; the communication module II is used for being in communication connection with a natural gas wellhead emergency cut-off valve to be controlled; and the first communication module is used for being in communication connection with a corresponding natural gas well RTU system. The invention has the advantages of saving a large amount of electric energy consumption and being suitable for the power supply control of the emergency stop valve at the natural gas wellhead.
Description
Technical Field
The invention relates to a power supply control technology, in particular to a technology for controlling the power supply of an emergency cut-off valve of a natural gas wellhead.
Background
The protection of the natural gas well head in an emergency (such as when the pressure is over-pressure or under-pressure) is usually realized by an emergency cut-off valve. Because natural gas well sites are generally far away and cannot solve the problem of well site power supply through commercial power, the existing natural gas well sites generally adopt a solar cell panel matched with a storage battery to provide a working power supply for an emergency cut-off valve and realize remote well opening and closing control of a natural gas well opening by means of a well site RTU (remote Terminal Unit) system, the existing RTU system is directly connected with the emergency cut-off valve, the RTU system supplies power for the emergency cut-off valve, and the RTU system is directly communicated with the emergency cut-off valve for control.
And because the static working current of the emergency cut-off valve is large and is usually 200-400mA, the working current of the emergency cut-off valve reaches 15-20A when the well switching control is executed, and therefore the working power supply of the emergency cut-off valve has extremely high requirements on a well site RTU system. When encountering continuous rainy days, the emergency cutoff valve with high power consumption can often cause the insufficient supplement of the existing solar energy and also can cause the serious decline of the performance of the storage battery in the northern winter in low-temperature weather, thereby often causing the power shortage of the existing natural gas well site power supply system, further causing the paralysis of the whole natural gas well site information system due to the power shortage, failing to perform effective remote well opening and closing control on a natural gas well head, and bringing serious potential safety hazards for the safety operation of a natural gas well.
Disclosure of Invention
The invention aims to solve the problem that the power consumption of the existing natural gas wellhead emergency cut-off valve is large, and provides a power supply control device, system and method for the natural gas wellhead emergency cut-off valve.
The technical scheme adopted for solving the technical problems is that the power supply control device of the natural gas wellhead emergency shut-off valve comprises a communication module I, a communication module II, a processing module and a power supply module, wherein the communication module I, the communication module II and the power supply module are respectively connected with the processing module;
the communication module II is used for being in communication connection with a natural gas wellhead emergency cut-off valve to be controlled;
the communication module I is used for being in communication connection with a corresponding natural gas well RTU system;
the power supply module is used for supplying power to the processing module, the communication module I and the communication module II, and at least comprises an emergency cut-off valve power supply end which is used for being connected with a natural gas wellhead emergency cut-off valve through the emergency cut-off valve power supply end and supplying power or cutting off power to the emergency cut-off valve power supply end according to the control of the processing module;
the processing module is used for controlling the power supply module to supply power to the natural gas wellhead emergency cut-off valve connected with the communication module when the communication module I receives the switch well control instruction, then the received switch well control instruction is forwarded out through the communication module II, the state of the natural gas wellhead emergency cut-off valve connected with the communication module II is obtained through the communication module II, and when the switch well control instruction is executed by the natural gas wellhead emergency cut-off valve, the power supply module is controlled to cut off the power supply of the natural gas wellhead emergency cut-off valve connected with the communication module.
Specifically, to illustrate the power source of the power supply module, the power supply module is further configured to be connected to the power supply end of the emergency shutdown valve of the corresponding natural gas well RTU system, so as to obtain a power supply.
Further, for providing a structure of the power supply module, the power supply module includes a power supply end of the emergency cut-off valve, an on-off control module, a battery module and a power input unit, the power input unit is connected with the battery module, the battery module is connected with the power supply end of the emergency cut-off valve through the on-off control module, and the on-off control module is connected with the processing module.
Specifically, for solving the problem that the performance of the storage battery is greatly influenced by weather at present, the battery module adopts an ultralow-temperature lithium battery pack.
Still further, in order to provide an on-off control module, the on-off control module is an electronic switch, two ends of the electronic switch are respectively connected with the battery module and the power supply end of the emergency cutoff valve, and the control end of the electronic switch is connected with the processing module.
Specifically, to illustrate the power source of the power input unit, the power input unit is used for being connected with the power supply end of the emergency shut-off valve of the corresponding natural gas well RTU system, so as to obtain a power supply. In order to solve the problem that a storage battery adopted by the conventional natural gas well RTU system supplies power to an emergency cut-off valve, the power input unit is a solar auxiliary power supply.
Still further, in order to reduce the power consumption of the processing module, the processing module adopts a low-power processor, preferably an ultra-low-power single-chip microcomputer with the model of MSP 430.
The invention solves the technical problem and also provides a power supply control system of the natural gas wellhead emergency cut-off valve, which comprises a natural gas well RTU system, the natural gas wellhead emergency cut-off valve and a power supply control device of the natural gas wellhead emergency cut-off valve, wherein the natural gas well RTU system is connected with the natural gas wellhead emergency cut-off valve through the natural gas wellhead emergency cut-off valve power supply control device, and the natural gas wellhead emergency cut-off valve power supply control device is connected with a power supply end of the emergency cut-off valve.
The invention solves the technical problem and also provides a power supply control method for the natural gas wellhead emergency cut-off valve, which is applied to the power supply control device for the natural gas wellhead emergency cut-off valve and comprises the following steps:
step 1, when a communication module receives a well switching control instruction, a processing module enables a power supply end of an emergency cut-off valve of a power supply module to supply power;
step 2, the processing module sends out the received well switching control instruction through a communication module II;
and 3, the processing module acquires the state of the natural gas wellhead emergency cut-off valve to be controlled through the communication module II, judges whether the natural gas wellhead emergency cut-off valve executes a well switching control instruction or not, controls the power supply end of the emergency cut-off valve of the power supply module to be powered off if the natural gas wellhead emergency cut-off valve executes the well switching control instruction, and otherwise waits until the natural gas wellhead emergency cut-off valve executes the well switching control instruction and then controls the power supply end of the emergency cut-off valve of the power supply module to be powered off.
The natural gas well RTU system and the natural gas well head emergency cut-off valve are connected through the natural gas well head emergency cut-off valve power supply control device respectively, so that the natural gas well RTU system and the natural gas well head emergency cut-off valve do not need to be directly connected, and the natural gas well head emergency cut-off valve is powered on demand through the natural gas well head emergency cut-off valve power supply control device, so that a large amount of electric energy consumption can be saved, the phenomenon of power shortage of a natural gas well field power supply system is greatly reduced, and safe and reliable operation of a natural gas well field is ensured.
Drawings
Fig. 1 is a system block diagram of a natural gas wellhead emergency shut-off valve power supply control device of the invention.
Fig. 2 is a system block diagram of the natural gas wellhead emergency shut-off valve power supply control system of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the embodiments and the accompanying drawings.
The invention relates to a power supply control device of a natural gas wellhead emergency cut-off valve, which has a system block diagram shown in figure 1 and comprises a communication module I, a communication module II, a processing module and a power supply module, wherein the communication module I, the communication module II and the power supply module are respectively connected with the processing module, and the communication module II is used for being in communication connection with the natural gas wellhead emergency cut-off valve to be controlled; the communication module I is used for being in communication connection with a corresponding natural gas well RTU system; the power supply module is used for supplying power to the processing module, the first communication module and the second communication module, and at least comprises an emergency cut-off valve power supply end which is used for being connected with a natural gas wellhead emergency cut-off valve through the emergency cut-off valve power supply end and supplying power or cutting off power to the emergency cut-off valve power supply end according to the control of the processing module; the processing module is used for controlling the power supply module to supply power to the natural gas wellhead emergency cut-off valve connected with the communication module when the communication module I receives the switch well control instruction, then the received switch well control instruction is forwarded out through the communication module II, the state of the natural gas wellhead emergency cut-off valve connected with the communication module II is obtained through the communication module II, and when the switch well control instruction is executed by the natural gas wellhead emergency cut-off valve, the power supply module is controlled to cut off the power supply of the natural gas wellhead emergency cut-off valve connected with the communication module.
To illustrate the power source of the power supply module, the power supply module may also be used to connect with the power supply terminal of the emergency shutdown valve of the corresponding natural gas well RTU system, so as to obtain a power supply.
In order to provide a structure of the power supply module, the power supply module comprises a power supply end of the emergency cut-off valve, an on-off control module, a battery module and a power input unit, wherein the power input unit is connected with the battery module, the battery module is connected with the power supply end of the emergency cut-off valve through the on-off control module, and the on-off control module is connected with the processing module.
In order to solve the problem that the performance of the storage battery is greatly influenced by weather at present, the battery module is preferably an ultralow-temperature lithium battery pack. Thereby ensuring the power supply capability of the natural gas wellhead emergency cut-off valve under the low-temperature condition.
In order to provide the on-off control module, the on-off control module can adopt an electronic switch, two ends of the electronic switch are respectively connected with the battery module and the power supply end of the emergency cut-off valve, and the control end of the electronic switch is connected with the processing module.
To illustrate the power source of the power input unit, the power input unit may be used to connect with the power supply terminal of the emergency shutdown valve of the corresponding gas well RTU system, so as to obtain power. In order to solve the problem that a storage battery adopted by the conventional natural gas well RTU system supplies power to the emergency cut-off valve, the power input unit is a solar auxiliary power supply, so that the power supply to the natural gas well head emergency cut-off valve is completely separated from the natural gas well RTU system, the power supply of the natural gas well RTU system is not needed, and the problem of power shortage caused by the emergency cut-off valve can not occur in the natural gas well RTU system.
In order to reduce the power consumption of the processing module, the processing module adopts a low-power processor, preferably an ultra-low-power singlechip of the model MSP 430. When the on-off control module of the power supply module adopts an electronic switch and other on-off control devices which are easy to control, the on-off control device can be controlled through an I/O pin of the MSP430 single chip microcomputer, and the realization is easy.
The system block diagram of the power supply control system of the natural gas wellhead emergency cut-off valve is shown in figure 2, and the power supply control system comprises a natural gas well RTU system, the natural gas wellhead emergency cut-off valve and a power supply control device of the natural gas wellhead emergency cut-off valve, wherein the natural gas well RTU system is connected with the natural gas wellhead emergency cut-off valve through the power supply control device of the natural gas wellhead emergency cut-off valve, and the power supply control device of the natural gas wellhead emergency cut-off valve is connected with the power supply end of the emergency cut-off valve. Therefore, the natural gas well RTU system and the natural gas well head emergency cut-off valve are respectively connected by the natural gas well head emergency cut-off valve power supply control device, so that the natural gas well RTU system and the natural gas well head emergency cut-off valve are not directly connected any more, and power supply of the natural gas well head emergency cut-off valve according to requirements can be realized.
The invention relates to a power supply control method for a natural gas wellhead emergency block valve, which is applied to the power supply control device for the natural gas wellhead emergency block valve and comprises the following steps:
step 1, when a communication module receives a well switching control instruction, a processing module enables a power supply end of an emergency cut-off valve of a power supply module to supply power;
step 2, the processing module sends out the received well switching control instruction through a communication module II;
and 3, the processing module acquires the state of the natural gas wellhead emergency cut-off valve to be controlled through the communication module II, judges whether the natural gas wellhead emergency cut-off valve executes a well switching control instruction or not, controls the power supply end of the emergency cut-off valve of the power supply module to be powered off if the natural gas wellhead emergency cut-off valve executes the well switching control instruction, and otherwise waits until the natural gas wellhead emergency cut-off valve executes the well switching control instruction and then controls the power supply end of the emergency cut-off valve of the power supply module to be powered off.
Therefore, the power supply state of the natural gas inlet emergency cut-off valve is changed into power supply according to needs through the natural gas well head emergency cut-off valve, only standby monitoring power consumption is achieved when power supply is not needed, the standby monitoring power consumption is less than 1mA, and compared with the standby current of 200 and 400mA of the emergency cut-off valve in the original system, the power consumption can be saved by more than 99%.
Claims (10)
1. The power supply control device for the natural gas wellhead emergency block valve is characterized by comprising a first communication module, a second communication module, a processing module and a power supply module, wherein the first communication module, the second communication module and the power supply module are respectively connected with the processing module;
the communication module II is used for being in communication connection with a natural gas wellhead emergency cut-off valve to be controlled;
the communication module I is used for being in communication connection with a corresponding natural gas well RTU system;
the power supply module is used for supplying power to the processing module, the communication module I and the communication module II, and at least comprises an emergency cut-off valve power supply end which is used for being connected with a natural gas wellhead emergency cut-off valve through the emergency cut-off valve power supply end and supplying power or cutting off power to the emergency cut-off valve power supply end according to the control of the processing module;
the processing module is used for controlling the power supply module to supply power to the natural gas wellhead emergency cut-off valve connected with the communication module when the communication module I receives the switch well control instruction, then the received switch well control instruction is forwarded out through the communication module II, the state of the natural gas wellhead emergency cut-off valve connected with the communication module II is obtained through the communication module II, and when the switch well control instruction is executed by the natural gas wellhead emergency cut-off valve, the power supply module is controlled to cut off the power supply of the natural gas wellhead emergency cut-off valve connected with the communication module.
2. The natural gas wellhead emergency shutdown valve power supply control device of claim 1, wherein the power supply module is further used for being connected with a power supply end of an emergency shutdown valve of a corresponding natural gas well RTU system so as to obtain power.
3. The natural gas wellhead emergency block valve power supply control device of claim 1, wherein the power supply module comprises an emergency block valve power supply end, an on-off control module, a battery module and a power input unit, the power input unit is connected with the battery module, the battery module is connected with the emergency block valve power supply end through the on-off control module, and the on-off control module is connected with the processing module.
4. The natural gas wellhead emergency shutdown valve power supply control device of claim 3, wherein the battery module employs an ultra-low temperature lithium battery pack.
5. The power supply control device for the emergency cut-off valve of the natural gas wellhead as claimed in claim 3, wherein the on-off control module is an electronic switch, two ends of the electronic switch are respectively connected with the power supply ends of the battery module and the emergency cut-off valve, and the control end of the electronic switch is connected with the processing module.
6. The natural gas wellhead emergency shut-off valve power supply control device of claim 3, wherein the power supply input unit is used for being connected with a power supply end of an emergency shut-off valve of a corresponding natural gas well RTU system so as to obtain power supply.
7. The natural gas wellhead power supply control device of claim 3, wherein the power input unit is a solar auxiliary power supply.
8. The natural gas wellhead power supply control device of an emergency shut-off valve according to any one of claims 1 to 7, wherein the processing module adopts a low-power processor.
9. The power supply control system of the natural gas wellhead emergency cut-off valve is characterized by comprising a natural gas well RTU system, the natural gas wellhead emergency cut-off valve and the power supply control device of the natural gas wellhead emergency cut-off valve as claimed in any one of claims 1 to 8, wherein the natural gas well RTU system is connected with the natural gas wellhead emergency cut-off valve through the power supply control device of the natural gas wellhead emergency cut-off valve, and the power supply control device of the natural gas wellhead emergency cut-off valve is connected with the power supply end of the emergency cut-off valve.
10. The power supply control method of the natural gas wellhead emergency cut-off valve is applied to the power supply control device of the natural gas wellhead emergency cut-off valve as claimed in any one of claims 1 to 8, and comprises the following steps:
step 1, when a communication module receives a well switching control instruction, a processing module enables a power supply end of an emergency cut-off valve of a power supply module to supply power;
step 2, the processing module sends out the received well switching control instruction through a communication module II;
and 3, the processing module acquires the state of the natural gas wellhead emergency cut-off valve to be controlled through the communication module II, judges whether the natural gas wellhead emergency cut-off valve executes a well switching control instruction or not, controls the power supply end of the emergency cut-off valve of the power supply module to be powered off if the natural gas wellhead emergency cut-off valve executes the well switching control instruction, and otherwise waits until the natural gas wellhead emergency cut-off valve executes the well switching control instruction and then controls the power supply end of the emergency cut-off valve of the power supply module to be powered off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110439847.XA CN113153216A (en) | 2021-04-23 | 2021-04-23 | Power supply control device, system and method for natural gas wellhead emergency shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110439847.XA CN113153216A (en) | 2021-04-23 | 2021-04-23 | Power supply control device, system and method for natural gas wellhead emergency shut-off valve |
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| Publication Number | Publication Date |
|---|---|
| CN113153216A true CN113153216A (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110439847.XA Pending CN113153216A (en) | 2021-04-23 | 2021-04-23 | Power supply control device, system and method for natural gas wellhead emergency shut-off valve |
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| Country | Link |
|---|---|
| CN (1) | CN113153216A (en) |
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2021
- 2021-04-23 CN CN202110439847.XA patent/CN113153216A/en active Pending
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