CN112938883A - Method and system for preventing gun lifting and character walking and judging sealing state of refueling device - Google Patents
Method and system for preventing gun lifting and character walking and judging sealing state of refueling device Download PDFInfo
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- CN112938883A CN112938883A CN202110358533.7A CN202110358533A CN112938883A CN 112938883 A CN112938883 A CN 112938883A CN 202110358533 A CN202110358533 A CN 202110358533A CN 112938883 A CN112938883 A CN 112938883A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/08—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred
- B67D7/085—Testing or calibrating apparatus therefore
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
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- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to a method for preventing a gun lifting from moving and judging the sealing state of an oiling device, which comprises the following steps of firstly, sending a first signal to an encoder when the gun is lifted, enabling the encoder to send a first pulse signal and receiving the first pulse signal; a second step of presetting a pre-oiling period, judging whether the pre-oiling is finished or not according to the state of the first pulse signal received in the pre-oiling period, and sending a second signal to the encoder when the pre-oiling is judged to be finished so that the encoder starts to send a second pulse signal; thirdly, charging is carried out according to the second pulse signal; the method comprises the steps of receiving a first pulse signal in a pre-oiling period, judging whether pre-oiling is finished or not according to the state of the first pulse signal received in the pre-oiling period, judging that pre-oiling is finished if the first pulse signal is not received, and judging that pre-oiling is finished if the first pulse signal is received, wherein the pre-oiling is finished if the first pulse signal is not received, and the gun lifting and jumping problem can be prevented and the sealing state of the oiling device can be judged.
Description
Technical Field
The invention belongs to the technical field of refueling equipment, and particularly relates to a method and a system for preventing a gun from moving and judging the sealing state of a refueling device.
Background
When filling at the filling station, after lifting the rifle, before the customer's oil tank was put into to the oil gun, the oil pump operation can be suppressed in to the filler tube, if the filler tube internal pressure is not enough, there is oily input in the filler tube, can lead to the encoder to rotate and output pulse, and the measurement treater turns into the oil mass amount of money and gives the control display data after obtaining the pulse, shows the phenomenon of transaction data on the screen, jumps the word for lifting the rifle promptly. Because of strict explosion-proof requirements, a metering component encoder of a fuel dispenser must be placed in an explosion-proof area at the front end and cannot be placed at the position of a fuel gun at a terminal, so that the fuel gun is not placed for a long time, the metering component of the fuel dispenser gradually loses pressure between the fuel gun and the metering component, and then the gun is lifted next time to jump.
In order to solve the problems of the gun lifting and the jumping of the oiling machine and the problem that the abnormal sealing state of the oiling device cannot be found in time, a method and a system for preventing the gun lifting and the character moving and detecting the oil leakage of the oiling device are urgently needed.
Disclosure of Invention
In order to solve the above problems, a method for preventing the work of lifting a gun and determining the sealing state of a refueling device includes a first step S1 of sending a first signal to the encoder 2 when the gun is lifted, causing the encoder 2 to send a first pulse signal, and receiving the first pulse signal; a second step S2, presetting a pre-oiling period, determining whether pre-oiling is finished according to the state of the first pulse signal received in the pre-oiling period, and when the pre-oiling is finished, sending a second signal to the encoder 2 to enable the encoder 2 to start sending the second pulse signal; a third step S3 of charging according to the second pulse signal; judging whether the pre-oiling is finished or not according to the state of the first pulse signal received in the pre-oiling period, if the first pulse signal is not received, judging that the pre-oiling is finished, and if the received first pulse signal is present or absent, judging that the pre-oiling is finished.
According to an embodiment of the invention, the method further comprises the steps of determining the time difference between the last lance hanging time and the present lance lifting time, setting a pressurizing threshold or an expansion threshold according to the time difference, and calculating the pre-filling oil amount according to a first pulse signal in the pre-filling period; and comparing the pressurizing threshold or the expansion threshold with the pre-filling amount, judging that the sealing of the oiling device is normal when the pre-filling amount is smaller than the pressurizing threshold or the expansion threshold, and otherwise, judging that the sealing of the oiling device is abnormal.
According to an embodiment of the present invention, the method further includes determining that the refueling device is sealed abnormally if the encoder 2 continues to transmit the first pulse signal during the pre-refueling period.
According to an embodiment of the invention, the method further comprises the steps of selecting to set the pressurizing threshold if the difference between the last gun hanging time and the current gun lifting time is greater than 0.5h, and selecting to set the expansion threshold if the difference between the last gun hanging time and the current gun lifting time is less than 0.5 h; the inflate threshold was set to 0.3L and the inflate threshold was set to 0.05L.
According to one embodiment of the invention, the time length of the pre-oiling period is set to be 0.2 s-1 s.
According to another aspect of the invention, a system for preventing the phenomenon of lifting a gun and judging the sealing state of an oiling device comprises a monitoring processor 1, a metering processor 3 and an encoder 2, wherein the monitoring processor 1 is used for sending a first signal to the encoder 2 when the gun is lifted, enabling the encoder 2 to send a first pulse signal and receive the first pulse signal, judging whether pre-oiling is finished or not according to the state of the first pulse signal received in the pre-oiling period during the preset pre-oiling period, and sending a second signal to the encoder 2 when the pre-oiling is judged to be finished, and enabling the encoder 2 to start sending a second pulse signal to the metering processor 3; the metering processor 3 is used for charging according to the second pulse signal; the encoder 2 is used for converting the fluid flow information into a pulse signal and sending the pulse signal to the monitoring processor 1; the monitoring processor 1 determines whether the pre-oiling is finished according to the state of the first pulse signal received in the pre-oiling period, if the first pulse signal is not received, the pre-oiling is determined to be finished, and if the first pulse signal received by the monitoring processor 1 is from the existence to the nonexistence, the pre-oiling is determined to be finished.
According to an embodiment of the present invention, the monitoring processor 1 is further configured to determine a time difference between a last lance hanging time and a present lance lifting time, set a pressurization threshold or an expansion threshold according to the time difference, calculate a pre-fueling amount according to a first pulse signal received during a pre-fueling period, compare the pressurization threshold or the expansion threshold with the pre-fueling amount, determine that the fueling device is normally sealed when the pre-fueling amount is smaller than the pressurization threshold or the expansion threshold, and otherwise determine that the fueling device is abnormally sealed.
According to an embodiment of the present invention, during said pre-oiling period, if the encoder 2 continues to send the first pulse signal, the monitoring processor 1 determines that the oiling device is abnormally sealed
According to one embodiment of the invention, if the difference between the last gun hanging time calculated by the monitoring processor 1 and the current gun lifting time is greater than 0.5h, the set inflation threshold is selected, and if the difference between the last gun hanging time calculated by the monitoring processor 1 and the current gun lifting time calculated by the monitoring processor 1 is less than 0.5h, the set inflation threshold is selected by the monitoring processor 1, the inflation threshold is set to be 0.3L, and the inflation threshold is set to be 0.05L.
According to an embodiment of the invention, the monitoring processor 1 is adapted to set the length of time of said pre-oiling period to 0.2 s-1 s.
When the oil is added, the metering processor can not receive pulse signals in the pre-oil adding period, and the charging operation is not carried out, so that the problem of gun lifting and word jumping can be prevented; the oil filling amount in the oil pre-filling period is compared with a threshold value, so that whether the sealing performance of the oil filling device is normal can be judged; the monitoring processor judges the end time of pre-oiling through the first pulse signal in the pre-oiling period, so that pre-oiling can be accurately carried out, and whether the sealing performance of the oiling device is normal can be judged; and a suppressing threshold or an expansion threshold is set according to the time difference of two times of refueling, so that the accuracy of judging the tightness of the refueling device can be further improved.
Drawings
FIG. 1 is a schematic flow chart of a method for preventing a gun lifting from moving and determining a sealing state of a refueling device;
FIG. 2 is a schematic flow chart of a method for preventing the gun lifting from moving and judging the sealing state of the refueling device;
FIG. 3 is a schematic diagram of the connection relationship of the system for preventing the gun lifting from moving and judging the sealing state of the refueling device.
Detailed Description
In the following detailed description of the preferred embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration, specific features of the invention, such that the advantages and features of the invention may be more readily understood and appreciated. The following description is an embodiment of the claimed invention, and other embodiments related to the claims not specifically described also fall within the scope of the claims.
Fig. 1 shows a flow chart of a method for preventing the gun lifting from moving and determining the sealing state of the refueling device.
As shown in fig. 1, a method for preventing a gun lifting from moving and determining a sealing state of a fueling device includes a first step S1 of sending a first signal to an encoder 2, causing the encoder 2 to send a first pulse signal, and receiving the first pulse signal, when the gun is lifted; a second step S2, presetting a pre-oiling period, determining whether pre-oiling is finished according to the state of the first pulse signal received in the pre-oiling period, and when the pre-oiling is finished, sending a second signal to the encoder 2 to enable the encoder 2 to start sending the second pulse signal; a third step S3 of charging according to the second pulse signal; judging whether the pre-oiling is finished or not according to the state of the first pulse signal received in the pre-oiling period, if the first pulse signal is not received, judging that the pre-oiling is finished, and if the received first pulse signal is present or absent, judging that the pre-oiling is finished.
The encoder 2 is connected with the metering system, when oil flows in the oil filling pipe, the metering system rotates to drive the encoder 2 to rotate, and the encoder 2 sends pulse signals to the monitoring processor 1 and the metering processor 3.
The first signal is a signal sent by the monitoring processor 1 to the encoder 2 after the gun is lifted, and is used for controlling the encoder 2 to only send the first pulse signal to the monitoring processor 1, and the monitoring processor 1 calculates the flow according to the received first pulse signal, so that the monitoring processor 1 can conveniently monitor the flow data of the oil.
The encoder is arranged in an explosion-proof area at the rear end and is at a certain distance from the oil filling gun, the encoder is excited by fluid flowing in the oil filling device during pre-filling to generate a first pulse signal, and the encoder is excited by the fluid flowing in the oil filling device during normal filling to generate a second pulse signal.
The second signal is a signal sent by the monitoring processor 1 to the encoder 2 after pre-oiling is finished and before formal oiling, and is used for enabling the encoder 2 to simultaneously send a second pulse signal to the monitoring processor 1 and the metering processor 3, enabling the metering processor 3 to calculate the oiling amount according to the second pulse signal and output the oiling amount information; the monitoring processor 1 calculates the oil filling amount according to the received second pulse signal, and the monitoring processor 1 can conveniently monitor the flow data of the oil.
The first pulse signal is the pulse signal sent by the encoder 2 during the pre-oiling period, and the first pulse signal is only sent to the monitoring processor 1.
The second pulse signal is a pulse signal sent by the encoder 2 during formal refueling after the refueling is finished, and the second pulse signal is simultaneously sent to the monitoring processor 1 and the metering processor 3.
The pre-oiling period refers to a time period set artificially, and the monitoring processor 1 judges the specific moment of the end of pre-oiling according to the first pulse signal sent by the encoder 2 after receiving the gun lifting signal, namely the actual time of pre-oiling, namely the pre-oiling period is obtained. The upper limit value of the time period during the oil pre-filling period can be set according to actual conditions, for example, the time period can be set to be 0.1 s-10 s, the time period is preferably set to be 0.2 s-1 s, the time period is from the gun lifting to the time period when the oil gun is inserted into an automobile oil tank, normal oil filling is not delayed, and the time is enough for oil pre-filling.
In the oil pre-charging period, if the encoder 2 has no pulse signal after lifting the gun, the pressure in the oil filling pipe is normal, the oil filling pump does not output the gasoline to the oil filling gun, the oil pre-charging is not needed, and the oil pre-charging can be judged to be finished; if the encoder 2 is changed into a non-pulse signal after the gun is lifted, the pulse signal indicates that the pressure in the refueling pipe is under-pressure, the refueling pump outputs gasoline outwards, and after the gasoline is output for a period of time, the pressure in the refueling pipe returns to normal, and the end of pre-refueling can be judged; if the encoder 2 continuously sends the first pulse signal, the sealing abnormality of the refueling device is judged.
The gun lifting means that the oil gun is taken up from the oiling machine, when the gun is lifted, the oil gun can send gun lifting signals to the monitoring processor 1 and the metering processor 3, and when the gun is hung after oiling is finished, the oil gun can send gun hanging signals to the metering processor 3 and the monitoring processor 1.
When pre-oiling, because the time interval of refueling every time is different, the amount of pre-oiling required for each pre-oiling is also different, in order to more accurately pre-oiling and accurately judge whether the sealing performance of the refueling device is normal, different pre-oiling threshold values can be set according to the time difference of two times of refueling, the time difference value can be set to be 0.5 h-2 h, for example, the time difference can be set to be 0.5h, when the time difference is less than 0.5h, an expansion threshold value is selected, the expansion threshold value can be set to be 0.01L-0.1L, when the time difference is more than 0.5h, a pressurizing threshold value is selected, and the pressurizing threshold value can be set to be 0.1L-0.5L.
The time difference between the last lance hanging time and the present lance lifting time means that the monitoring processor 1 receives a lance lifting signal of the fuel gun, the time of receiving the lance lifting signal is taken as the present lance lifting time, the monitoring processor 1 receives the lance hanging signal of the fuel gun, the time of receiving the lance hanging signal is taken as the lance hanging time, and the difference value between the last lance hanging time and the present lance lifting time is the time difference.
The monitoring processor 1 can judge the tightness of the refueling device according to the pre-refueling amount, for example, if the time difference between two times of refueling is 2 hours, the set time difference is 0.5h, and the set pressurizing threshold is 0.3L, the monitoring processor 1 selects the pressurizing threshold of 0.3L for pre-refueling, after the pre-refueling is finished, the monitoring processor 1 analyzes and judges according to the pre-refueling amount, if the pre-refueling amount is less than the pressurizing threshold of 0.3L, the refueling device is judged to be normally sealed, otherwise, the refueling device is judged to be abnormally sealed. The pre-oiling amount is respectively set with a pressurizing threshold and an expansion threshold according to the difference of the time difference of two-time oiling, and the pre-oiling amount is compared with the corresponding threshold, so that the phenomenon of gun lifting and character moving can be prevented from being sent, and whether the sealing performance of the oiling device is normal can be judged more accurately.
When oiling, when the monitoring processor 1 receives a gun lifting signal, a first signal is sent to the encoder 2, so that the encoder 2 only sends a first pulse signal to the monitoring processor 1; the monitoring processor 1 presets a pre-oiling period, judges whether pre-oiling is finished or not according to the first pulse signal received in the pre-oiling period, if the first pulse signal is not received, the pre-oiling is judged to be finished, if the received first pulse signal is from the existence to the nonexistence, the pre-oiling is judged to be finished, and when the pre-oiling is judged to be finished, a second signal is sent to the encoder 2, so that the encoder 2 starts to send the second pulse signal to the metering processor 3; and the metering processor 3 carries out charging according to the second pulse signal.
According to one embodiment of the invention, the time difference between the last lance hanging time and the present lance lifting time is determined, a pressurizing threshold or an expansion threshold is set according to the time difference, and the pre-filling amount is calculated according to a first pulse signal in a pre-filling period; and comparing the pressurizing threshold or the expansion threshold with the pre-filling amount, judging that the sealing of the oiling device is normal when the pre-filling amount is smaller than the pressurizing threshold or the expansion threshold, and otherwise, judging that the sealing of the oiling device is abnormal.
According to an embodiment of the present invention, the method further includes determining that the refueling device is sealed abnormally if the encoder 2 continues to transmit the first pulse signal during the pre-refueling period.
According to an embodiment of the invention, the method further comprises the steps of selecting to set the pressurizing threshold if the difference between the last gun hanging time and the current gun lifting time is greater than 0.5h, and selecting to set the expansion threshold if the difference between the last gun hanging time and the current gun lifting time is less than 0.5 h; the inflate threshold was set to 0.3L and the inflate threshold was set to 0.05L.
According to one embodiment of the invention, the time length of the pre-oiling period is set to be 0.2 s-1 s.
Fig. 2 is a schematic flow chart of a method for preventing the gun lifting from moving and detecting oil leakage of the refueling equipment.
As shown in fig. 2, when the gun is lifted and oil is added, the monitoring processor 1 receives a gun lifting signal, sends a first signal to the encoder 2 and the oiling pump, the oiling pump is started, and the encoder 2 only sends a first pulse signal to the monitoring processor 1; the monitoring processor 1 calculates the time difference between the last refueling and the current refueling, compares the time difference with a preset time difference threshold value in the monitoring processor, selects a proper pre-refueling mode, sets a pressurizing threshold value if the time difference between the two refueling is greater than the time difference threshold value, and sets an expansion threshold value if the time difference is less than the time difference threshold value; the method comprises the steps that a pre-oiling period is preset in a monitoring processor 1, whether pre-oiling is finished or not is judged according to a first pulse signal received in the pre-oiling period, if the first pulse signal is not received in the pre-oiling period, pre-oiling is judged to be finished, if the received first pulse signal is judged to be present or absent, pre-oiling is judged to be finished, when pre-oiling is judged to be finished, the monitoring processor 1 is compared with a threshold value according to the amount of pre-oiling, if the amount of pre-oiling is larger than the threshold value, sealing faults of equipment are warned, maintenance is conducted, and if the amount of pre-oiling is smaller than the threshold value, a second signal is sent to an encoder 2 by the monitoring processor 1, so that the encoder 2 starts to send a second pulse signal to a metering processor 3; and the metering processor 3 carries out charging and formal oiling according to the second pulse signal.
Fig. 3 is a schematic diagram showing the connection relationship of a system for preventing the gun lifting and the character moving and detecting the oil leakage of the refueling equipment.
As shown in fig. 3, the system comprises a monitoring processor 1, a metering processor 3 and an encoder 2, wherein the monitoring processor 1 is configured to send a first signal to the encoder 2 when the gun is lifted, enable the encoder 2 to send a first pulse signal and receive the first pulse signal, preset a pre-oiling period, determine whether pre-oiling is finished according to a state of the first pulse signal received in the pre-oiling period, and send a second signal to the encoder 2 when the pre-oiling is determined to be finished, and enable the encoder 2 to start sending a second pulse signal to the metering processor 3; the metering processor 3 is used for charging according to the second pulse signal; the encoder 2 is used for converting fluid flow information in the oil gun into pulse signals and sending the pulse signals to the monitoring processor 1; the monitoring processor 1 determines whether the pre-oiling is finished according to the state of the first pulse signal received in the pre-oiling period, if the first pulse signal is not received, the pre-oiling is determined to be finished, and if the first pulse signal received by the monitoring processor 1 is from the existence to the nonexistence, the pre-oiling is determined to be finished.
The monitoring processor 1 is further configured to determine a time difference between the last lance hanging time and the present lance lifting time, set a pressurization threshold or an expansion threshold according to the time difference, calculate a pre-fueling amount according to a first pulse signal received during a pre-fueling period, compare the pressurization threshold or the expansion threshold with the pre-fueling amount, determine that the fueling device is normally sealed when the pre-fueling amount is smaller than the pressurization threshold or the expansion threshold, and determine that the fueling device is abnormally sealed otherwise.
According to an embodiment of the present invention, during said pre-oiling period, if the encoder 2 continues to send the first pulse signal, the monitoring processor 1 determines that the oiling device is abnormally sealed
According to one embodiment of the invention, if the difference between the last gun hanging time calculated by the monitoring processor 1 and the current gun lifting time is greater than 0.5h, the set inflation threshold is selected, and if the difference between the last gun hanging time calculated by the monitoring processor 1 and the current gun lifting time calculated by the monitoring processor 1 is less than 0.5h, the set inflation threshold is selected by the monitoring processor 1, the inflation threshold is set to be 0.3L, and the inflation threshold is set to be 0.05L.
According to an embodiment of the invention, the monitoring processor 1 is adapted to set the length of time of said pre-oiling period to 0.2 s-1 s.
Embodiment 2, a monitoring processor receives a fuel gun lifting signal, calculates a time difference between a last time of hanging a gun and a current time of lifting the gun to be 20min, wherein a set time difference value is 0.5h, a pressurizing threshold value is 0.5L, and an expansion threshold value is 0.05L, the monitoring processor selects the pressurizing threshold value to be 0.05L for pre-oiling, sends a first signal to an encoder, enables the encoder to send a first pulse signal only to the monitoring processor, sets the length of the pre-oiling time to be 2s, determines that the pre-oiling is finished if the first pulse signal is not received within 2s, determines that the pre-oiling is finished if the received first pulse signal is present or absent, determines that the sealing of a fuel filling device is abnormal if the encoder continuously sends the first pulse signal, and performs alarm prompt; and after the monitoring processor judges that the pre-oiling is finished, calculating the pre-oiling amount, if the pre-oiling amount is less than 0.05L, judging that the system tightness is normal, sending a second signal to the encoder, if the pre-oiling amount is more than 0.05L, judging that the system tightness is abnormal, giving an alarm prompt, after receiving the second signal, the encoder simultaneously sends a second pulse signal to the metering processor and the monitoring processor, and the metering processor carries out charging according to the second pulse signal.
According to the embodiment, when the oil is added, the pre-oil adding process is set, so that the metering processor does not receive pulse signals and does not perform charging operation, and the problem of gun lifting and word jumping can be prevented; the oil pre-filling time is set, and whether the sealing performance of the oil filling device is normal can be judged by comparing the oil filling amount in the oil pre-filling period with a threshold value; the monitoring processor judges the end time of pre-oiling through the first pulse signal in the pre-oiling period, so that pre-oiling can be accurately carried out, and whether the sealing performance of the oiling device is normal can be judged; and a suppressing threshold value and an expansion threshold value are set according to the time difference of two times of oiling, so that the accuracy of judging the sealing performance of the oiling device can be further improved.
Setting the first pulse signal which can be received by the monitoring processor to be calculable; according to the difference of the two times of refueling time, two different pre-refueling threshold values are selected, so that the gun lifting and jumping problem can be prevented, the benefit of a refueling client is guaranteed, whether the tightness of the refueling device is normal can be detected, and the tightness problem of the refueling device can be found in time.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (10)
1. A method for preventing the gun from moving and judging the sealing state of an oil feeder includes,
a first step (S1) of transmitting a first signal to the encoder (2) and causing the encoder (2) to transmit a first pulse signal and receiving the first pulse signal when the gun is lifted;
a second step (S2) of presetting a pre-oiling period, judging whether the pre-oiling is finished or not according to the state of the first pulse signal received in the pre-oiling period, and sending a second signal to the encoder (2) when the pre-oiling is judged to be finished so as to enable the encoder (2) to start sending a second pulse signal;
a third step (S3) of charging based on the second pulse signal;
judging whether the pre-oiling is finished or not according to the state of the first pulse signal received in the pre-oiling period, if the first pulse signal is not received, judging that the pre-oiling is finished, and if the received first pulse signal is present or absent, judging that the pre-oiling is finished.
2. The method of claim 1, further comprising,
determining the time difference between the last lance hanging time and the present lance lifting time, setting a pressurizing threshold or an expansion threshold according to the time difference, and calculating the pre-oiling amount according to a first pulse signal in the pre-oiling period;
and comparing the pressurizing threshold or the expansion threshold with the pre-filling amount, judging that the sealing of the oiling device is normal when the pre-filling amount is smaller than the pressurizing threshold or the expansion threshold, and otherwise, judging that the sealing of the oiling device is abnormal.
3. The method according to claim 2, further comprising determining that the refueling apparatus is sealed abnormally if the encoder (2) continues to send the first pulse signal during the pre-refueling period.
4. The method of claim 2, further comprising,
if the difference value between the last gun hanging time and the current gun lifting time is larger than 0.5h, selecting to set a pressing threshold value, and if the difference value between the last gun hanging time and the current gun lifting time is smaller than 0.5h, selecting to set an expansion threshold value;
the inflate threshold was set to 0.3L and the inflate threshold was set to 0.05L.
5. The method of claim 1, wherein the length of time of the pre-oiling period is set to 0.2 s-1 s.
6. A system for preventing the lifting of a gun and the running of characters and judging the sealing state of an oiling device comprises a monitoring processor (1), a metering processor (3) and an encoder (2),
the monitoring processor (1) is used for sending a first signal to the encoder (2) when the gun is lifted, enabling the encoder (2) to send a first pulse signal and receive the first pulse signal, presetting a pre-oiling period, judging whether pre-oiling is finished according to the state of the first pulse signal received in the pre-oiling period, and sending a second signal to the encoder (2) when the pre-oiling is judged to be finished, and enabling the encoder (2) to start sending a second pulse signal to the metering processor (3);
the metering processor (3) is used for charging according to the second pulse signal;
the encoder (2) is used for converting the fluid flow information into pulse signals and sending the pulse signals to the monitoring processor (1);
the monitoring processor (1) judges whether the pre-oiling is finished according to the state of the first pulse signal received in the pre-oiling period, if the first pulse signal is not received, the pre-oiling is judged to be finished, and if the first pulse signal received by the monitoring processor (1) is from the existence to the nonexistence, the pre-oiling is judged to be finished.
7. The system of claim 6, wherein the monitoring processor (1) is further configured to determine a time difference between a last lance hanging time and a present lance lifting time, set a pressurization threshold or an expansion threshold according to the time difference, calculate a prefill volume according to a first pulse signal received during a prefill period, compare the pressurization threshold or the expansion threshold with the prefill volume, determine that the refueling device is normally sealed when the prefill volume is less than the pressurization threshold or the expansion threshold, and otherwise determine that the refueling device is abnormally sealed.
8. The system of claim 7, wherein the monitoring processor (1) determines an abnormal seal of the refuelling device if the encoder (2) continues to send the first pulse signal during the pre-refuelling period.
9. The system according to claim 7, wherein if the difference between the last lance hanging time calculated by the monitoring processor (1) and the present lance raising time is greater than 0.5h, the set inflation threshold is selected, and if the difference between the last lance hanging time calculated by the monitoring processor (1) and the present lance raising time calculated by the monitoring processor (1) is less than 0.5h, the set inflation threshold is selected by the monitoring processor (1), the inflation threshold is set to 0.3L, and the inflation threshold is set to 0.05L.
10. A system according to claim 6, wherein the monitoring processor (1) is adapted to set the length of time of the pre-oiling period to 0.2 s-1 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110358533.7A CN112938883B (en) | 2021-04-02 | 2021-04-02 | Method and system for preventing gun lifting and character walking and judging sealing state of refueling device |
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