CN115320480B - Oil tank truck oil discharge pressure regulating and controlling device and method - Google Patents
Oil tank truck oil discharge pressure regulating and controlling device and method Download PDFInfo
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- CN115320480B CN115320480B CN202211113387.2A CN202211113387A CN115320480B CN 115320480 B CN115320480 B CN 115320480B CN 202211113387 A CN202211113387 A CN 202211113387A CN 115320480 B CN115320480 B CN 115320480B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/22—Tank vehicles
- B60P3/224—Tank vehicles comprising auxiliary devices, e.g. for unloading or level indicating
- B60P3/2245—Adaptations for loading or unloading
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/22—Tank vehicles
- B60P3/224—Tank vehicles comprising auxiliary devices, e.g. for unloading or level indicating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/22—Tank vehicles
- B60P3/224—Tank vehicles comprising auxiliary devices, e.g. for unloading or level indicating
- B60P3/228—Measuring or indicating means, e.g. of level, volume, weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/22—Tank vehicles
- B60P3/24—Tank vehicles compartmented
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/12—Large containers rigid specially adapted for transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/548—Large containers characterised by means facilitating filling or emptying by pneumatic means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/52—Anti-slosh devices
Abstract
The invention discloses a device and a method for regulating and controlling oil unloading pressure of an oil tank truck, and relates to the technical field of oil tank transportation. In the invention, the following components are added: a floating box body is slidably arranged between the group of guide vertical rods, and an air flow injection pipe, a first distance sensor and a second distance sensor are arranged at the top of the oil tank where each independent oil cavity is located. A magnetic suction plate positioned right above the electromagnetic mechanism is embedded in the bottom plate of the floating box body. The position of the oil unloading pipe is provided with a flow velocity sensor, the position of each air flow injection pipe is provided with an injection pipe valve, the position of the air pressure pipe is provided with an air pressure sensor, the upstream end of the air pressure pipe is connected with an air supply pipeline, and the upstream end of the air supply pipeline is connected with a normal air inlet valve and an air supply mechanism. The invention greatly slows down the phenomenon of reduced oil discharge rate caused by less oil in the oil tank, more efficiently completes the oil discharge rate of the oil tank truck, reduces the waiting time of the refueling client of the gas station, and improves the quality of the customer refueling experience of the gas station.
Description
Technical Field
The invention relates to the technical field of oil tank transportation, in particular to an oil tank truck oil unloading pressure regulating device and method.
Background
After the tank truck transports a large amount of fluid to the filling station, when unloading, when the car owner drives into the filling station and need refuel, generally all can not directly refuel, sometimes need wait for a long time, just can normally refuel after the tank truck unloads oil, has influenced filling station customer's the experience of refueling. When the oil tank truck discharges oil, the oil in the oil tank is more, the flow speed of the oil discharge pipe is high, and the oil discharge speed is high, but when the oil in the oil tank is reduced to a certain degree, the flow speed of the oil discharge pipe begins to be greatly attenuated, so that the oil discharge speed is reduced, and the oil discharge time of the oil tank in the later oil discharge period is longer. In conclusion, how to accelerate the oil discharge rate in the later period of the oil tank and shorten the total time consumption of oil discharge of the oil tank becomes a problem to be solved.
Disclosure of Invention
The invention aims to solve the technical problem of providing the oil tank truck oil discharge pressure regulating device and the oil tank truck oil discharge pressure regulating method, so that the phenomenon of oil discharge rate reduction caused by less oil in an oil tank is greatly slowed down, the oil discharge speed of the oil tank truck is more efficiently finished, the waiting time of a filling station filling client is reduced, and the client filling experience quality of the filling station is improved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides an oil tank truck oil discharge pressure regulating device, which comprises an oil tank, wherein a plurality of wave-blocking baffles are arranged in the oil tank and correspondingly form independent oil cavities, the oil tank truck is also provided with a pipeline installation box positioned below the oil tank, the pipeline installation box is provided with an oil discharge pipe communicated with the oil tank, the oil discharge pipe comprises an oil discharge connection port, a group of guide vertical rods are fixedly arranged in each independent oil cavity, a floating box body is slidably arranged between the group of guide vertical rods, and an air flow injection pipe, a first distance sensor and a second distance sensor are arranged at the top of the oil tank where each independent oil cavity is positioned. The bottom of the oil tank where each independent oil cavity is located is provided with an electromagnetic mechanism, and a magnetic suction plate positioned right above the electromagnetic mechanism is embedded in the bottom plate of the floating box body. The position of the oil unloading pipe is provided with a flow velocity sensor, the position of each airflow injection pipe is provided with an injection pipe valve, the pipeline installation box is provided with an air pressure pipe communicated with the airflow injection pipe, the position of the air pressure pipe is provided with an air pressure sensor, the upstream end of the air pressure pipe is connected with an air supply pipeline, and the upstream end of the air supply pipeline is connected with a normal air inlet valve and an air supply mechanism.
As a preferable technical scheme of the oil discharge pressure regulating device in the invention: the direction of the sensing detection of the first distance sensor is opposite to the oil liquid area of the independent oil cavity, and the second distance sensor is opposite to the top side surface of the floating box body.
As a preferable technical scheme of the oil discharge pressure regulating device in the invention: the downstream end of the air pressure pipe is connected with an air supply main pipe, a plurality of branch pipes are arranged at the downstream of the air supply main pipe, each branch pipe is independently communicated with an air flow injection pipe, and the air flow injection pipe is communicated with an independent oil cavity.
As a preferable technical scheme of the oil discharge pressure regulating device in the invention: the floating box body is internally provided with a hollow cavity, guide plates are arranged on two side surfaces of the floating box body, and guide sliding grooves matched with the guide vertical rods are formed in the guide plates.
As a preferable technical scheme of the oil discharge pressure regulating device in the invention: the air pressure pipe comprises an air supply connection port, the air supply pipeline is connected and installed at the position of the air supply connection port, and the normal air inlet valve is located at the tail end position of one branch of the air supply pipeline.
The invention provides a method for regulating and controlling oil unloading pressure of an oil tank truck, which comprises the following steps: s1, connecting and installing an oil pipeline at the position of an oil unloading pipe, and connecting and installing a gas supply pipeline at the position of a gas pressure pipe. S2, opening a pipeline of an oil unloading pipe, simultaneously opening an injection pipe valve of an air flow injection pipe and a normal air inlet valve of an air supply pipeline, enabling an air supply mechanism to be free of action, enabling an oil tank to begin to unload oil, enabling an oil level in an independent oil cavity to begin to descend, enabling a floating box body to descend synchronously along with the oil level, enabling a first distance sensor to sense the real-time distance of the oil level, and analyzing the residual oil depth D of the oil level in the current independent oil cavity s The second distance sensor senses the real-time distance of the floating box body and analyzes the oil liquid height difference delta D of the immersed oil liquid level of the floating box body. S3, when the oil level in the independent oil cavity is equal to the depth D of residual oil s Less than the preset oil unloading and speed reducing oil reference depth D of the system J When the air inlet valve is closed in a normal state, the air supply mechanism is started, the air supply mechanism starts to inject air flow into the air pressure pipe and the air supply main pipe through the air supply pipeline, and the air pressure sensor senses and detects air pressure parameters of the air flow injected into the independent oil cavity. S4, when the oil level in the independent oil cavity is equal to the depth D of residual oil s When continuously decreasing, the continuously injected air flow in the independent oil cavity is increased independentlyAnd the air pressure of the vertical oil cavity, the residual oil in the independent oil cavity is influenced by the increased air pressure, and the attenuation degree of the oil discharge rate is slowed down. S5, when the oil level in the independent oil cavity is equal to the depth D of residual oil s Less than the preset oil unloading and speed reducing oil reference depth D of the system J When the oil level difference delta D is zero, the electromagnetic mechanism stops increasing the electromagnetic suction force and linearly reduces the electromagnetic suction force along with the oil unloading process to keep the oil level difference delta D in a zero state. S6, when the distance parameter of the top side surface of the floating box body sensed and detected by the second distance sensor is the sinking distance parameter D of the floating box body max When the oil level begins to be lower than the horizontal position of the top side surface of the floating box body, the electromagnetic mechanism linearly reduces the electromagnetic suction force of the electromagnetic mechanism according to the real-time parameter of the oil level difference delta D until the oil level in the independent oil cavity remains the depth D of the oil level in the oil s For a floating immersion depth D P And when the electromagnetic mechanism is powered off, stopping. S7, after the oil in the independent oil cavity is completely discharged, the power-off of the air supply mechanism is stopped.
As a preferable technical scheme of the oil discharge pressure regulating and controlling method in the invention: let the density of the oil in the tank be ρ A Let the weight of the floating box body be M P Let the volume of the floating box body be V P Normal drainage volume V of floating box A ＝M P /ρ A Let the horizontal area of the floating box body be S P The floating immersion depth D of the floating box body immersed in the oil liquid under the action of no other external force P ＝V A /S P . The residual liquid discharge volume of the floating box body is deltav=v P -V A 。
As a preferable technical scheme of the oil discharge pressure regulating and controlling method in the invention: the distance of the oil level detected by the first distance sensor is set as D a The distance of the second distance sensor sensing the floating box body is set as D b Oil level difference Δd=d a -D b . If the vertical depth of the independent oil cavity is L, the residual oil depth D of the oil level s ＝L-D a . Let the vertical thickness of the floating box body be D Z The parameter of the sinking distance of the floating box body is D max ＝L-D Z 。
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through real-time sensing detection of the oil level in the oil tank and configuration of the floating box body floating in the oil in the independent oil cavity, when the oil level is lower, the floating box body is immersed in the oil by external intervention of higher air pressure and magnetic attraction of the electromagnetic mechanism, the rising of the air pressure and the oil level of the oil cavity is realized, so that the phenomenon of reduced oil unloading rate caused by less oil in the oil tank is greatly slowed down, the oil unloading speed of the oil tank truck is more efficiently completed, the waiting time of a customer at a filling station is reduced, and the customer filling experience quality of the filling station is improved.
2. The floating box body designed in the invention floats above oil in the transportation process of the oil tank truck, can inhibit the oil from breaking waves to a certain extent, and improves the safety of oil tank transportation operation.
Drawings
Fig. 1 is a schematic view of the overall structure of the tank truck of the present invention.
Fig. 2 is a partially enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is a schematic floating diagram of a floating tank in an oil tank according to the present invention.
Fig. 4 is a schematic drawing showing the sinking of the flotation tank (when attracted by the electromagnetic mechanism) in the tank in the present invention.
Fig. 5 is a schematic view of the flotation tank of the present invention (bottom view).
FIG. 6 is a schematic diagram of the air supply line of the air supply mechanism according to the present invention.
Reference numerals illustrate:
1-an oil tank, 101-a wave-blocking baffle plate, 102-an independent oil cavity, 103-a guide vertical rod, 104-an air flow injection pipe and 105-an injection pipe valve; 2-a pipe installation box; 3-oil discharge pipe, 301-oil discharge connector; 4-a flow rate sensor; 5-air pressure pipe, 501-air supply connector; 6-an air pressure sensor; 7, a main air supply pipe; 8-floating box body, 801-hollow cavity, 802-guide plate, 803-guide chute and 804-magnetic suction plate; 9-an electromagnetic mechanism; 10-a first distance sensor; 11-a second distance sensor; 12-oil level; 13-a gas supply mechanism; 14-an air supply pipeline; 15-normal inlet valve.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1, a plurality of wave-blocking baffles 101 are disposed inside the oil tank 1, the wave-blocking baffles 101 form a plurality of independent oil chambers 102 inside the oil tank 1, and the oil tank truck is further provided with a pipe installation box 2 (see fig. 2), and the pipe installation box 2 is located below the oil tank 1. Downstream of the main air supply pipe 7 (see fig. 2), a plurality of branch pipes are provided, each of which is independently communicated with an air flow injection pipe 104, and the air flow injection pipe 104 is communicated with the independent oil chamber 102. A group of guide vertical rods 103 are fixedly arranged in the independent oil cavity 102, the floating box body 8 slides between the group of guide vertical rods 103, and a plurality of electromagnetic mechanisms 9 are arranged at the bottom of the oil tank 1.
Referring to fig. 2, a pipeline installation box 2 is provided with an oil discharge pipe 3, a flow rate sensor 4 is installed on the oil discharge pipe 3, the oil discharge pipe 3 is communicated with an oil tank 1, and the oil discharge pipe 3 comprises an oil discharge connection port 301. The pipe mounting box 2 is provided with an air pressure pipe 5, the downstream end of the air pressure pipe 5 is connected with an air supply main pipe 7, and an air pressure sensor 6 is mounted on the air pressure pipe 5.
Referring to fig. 3 and 4, an injection valve 105 is disposed at each position of the airflow injection pipe 104. The independent oil cavity 102 is fixedly provided with a group of guide vertical rods 103, the floating box body 8 slides on the guide vertical rods 103, and the floating box body 8 can be made of nonmetal materials, such as anti-corrosion rubber and plastic. An electromagnetic mechanism 9 is arranged below each independent oil cavity 102, a magnetic suction plate 804 (combined with fig. 5) is embedded in the bottom plate of the floating box body 8, the magnetic suction plates 804 and the electromagnetic mechanism 9 are positioned in the same vertical direction, and the electromagnetic mechanism 9 can directly magnetically attract the magnetic suction plates 804. The roof position department of independent oil pocket 102 all sets up air current injection pipe 104, first distance sensor 10, second distance sensor 11, and wherein, first distance sensor 10 sensing detection's direction is just to independent oil pocket 102's fluid region, and first distance sensor 10 is used for sensing detection independent oil pocket 102's fluid level 12 distance, and second distance sensor 11 just is just to the top side position of flotation tank 8, and second distance sensor 11 is used for sensing detection flotation tank 8 top side distance.
Referring to fig. 5, a hollow cavity 801 is formed inside a floating box 8, guide plates 802 are arranged on two sides of the floating box 8, guide sliding grooves 803 are formed in the guide plates 802, the floating box 8 is slidably mounted on a guide vertical rod 103 (combined with fig. 1, 3 and 4) through the guide sliding grooves 803, and a magnetic suction plate 804 is embedded inside a bottom plate of the floating box 8.
Referring to fig. 6, an air pressure sensor 6 (fig. 2 is combined) is installed on an air pressure tube 5, the air pressure tube 5 includes an air supply connection port 501 (fig. 2 is combined), an air supply pipeline 14 is connected to the air supply connection port 501, an air supply mechanism 13 is connected to an upstream end of the air supply pipeline 14, a branch is connected to the air supply pipeline 14, and a normal air inlet valve 15 is arranged at a tail end of the branch.
Example two
The invention relates to a method for regulating and controlling oil unloading pressure of an oil tank truck, which comprises the following steps:
firstly, the oil pipeline is connected and installed at the position of the oil unloading pipe 3, and the air supply pipeline 14 is connected and installed at the position of the air pressure pipe 5. Opening a pipeline of the oil unloading pipe 3, simultaneously opening an injection pipe valve 105 of an air flow injection pipe 104 and a normal air inlet valve 15 of an air supply pipeline 14, wherein the air supply mechanism 13 does not act, the oil tank 1 begins to unload oil, the oil level 12 in the independent oil cavity 102 begins to descend, the floating box 8 synchronously descends along with the oil level 12, the first distance sensor 10 senses the real-time distance of the oil level 12, and the depth D of the residual oil of the oil level 12 in the current independent oil cavity 102 is analyzed s The second distance sensor 11 senses the real-time distance of the flotation tank 8 and analyzes the oil level difference Δd of the immersion oil level 12 of the flotation tank 8.
Then, when the residual oil depth D of the oil level 12 in the independent oil chamber 102 s Less than the preset oil unloading and speed reducing oil reference depth D of the system J (oil unloading and speed reducing oil reference depth D) J Can be sensed by flow rateThe device 4 is obtained through multiple tests, namely when the flow rate sensor 4 senses that the flow rate of discharged oil is smaller than a certain value, the depth of the oil level 12 corresponding to the current flow rate state can be determined to be the reference depth D of the discharged oil and the speed-down oil J ) When the air inlet valve 15 is closed in a normal state, the air supply mechanism 13 is started, the air supply mechanism 13 starts to inject air flow into the air pressure pipe 5 and the air supply main pipe 7 through the air supply pipeline 14, and the air pressure sensor 6 senses and detects air pressure parameters of the air flow injected into the independent oil cavity 102.
Depth D of remaining oil in oil level 12 in independent oil chamber 102 s When continuing to decrease, the air flow continuously injected into the independent oil cavity 102 increases the air pressure of the independent oil cavity 102, the residual oil in the independent oil cavity 102 is affected by the increased air pressure, and the attenuation degree of the oil discharge rate is reduced.
Depth D of remaining oil in independent oil chamber 102 s Less than the preset oil unloading and speed reducing oil reference depth D of the system J When the oil level difference delta D is zero, the electromagnetic mechanism 9 stops increasing the electromagnetic suction force and linearly reduces the electromagnetic suction force along with the oil unloading process to keep the oil level difference delta D in a zero state;
finally, when the distance parameter of the top side surface of the floating box body 8 sensed by the second distance sensor 11 is the sinking distance parameter D of the floating box body 8 max When the oil level 12 starts to be lower than the horizontal position of the top side surface of the floating box body 8, the electromagnetic mechanism 9 linearly reduces the electromagnetic suction force of the electromagnetic mechanism 9 according to the real-time parameter of the oil level difference delta D until the residual oil depth D of the oil level 12 in the independent oil cavity 102 s For a floating immersion depth D P When the electromagnetic mechanism 9 is powered off, it is stopped. After the oil in the independent oil chamber 102 is completely discharged, the air supply mechanism 13 is stopped after power failure.
Wherein, let the density of the oil in the oil tank 1 be ρ A Let the weight of the floating box 8 be M P Let the volume of the floating box 8 be V P The floating box 8 normally discharges liquid (the floating box 8 normally discharges liquid, i.e. the floating box 8 floats in oil without other external forceVolume of oil occupied by submerged liquid) V A ＝M P /ρ A Let the horizontal area of the floating box 8 be S P The floating immersion depth D of the floating box body 8 immersed in the oil liquid under the action of no other external force P ＝V A /S P . The residual liquid discharge volume of the floating box 8 (the residual liquid discharge volume of the floating box 8 is the maximum volume of the oil which can be discharged again by the floating box 8 except the normal liquid discharge volume of the floating box 8) is DeltaV=V P -V A 。
The distance D between the first distance sensor 10 and the oil level 12 is set a Let the distance of the floating box 8 sensed by the second distance sensor 11 be D b Oil level difference Δd=d a -D b . Assuming that the vertical depth of the independent oil cavity 102 is L, the residual oil depth D of the oil level 12 is s ＝L-D a . Let the vertical thickness of the floating box body 8 be D Z The parameter of the sinking distance of the floating box body 8 is D max ＝L-D Z 。
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The utility model provides an oil tank car oil discharge pressure regulation and control device, the tank car includes oil tank (1), is equipped with a plurality of unrestrained baffle (101) and corresponding independent oil pocket (102) that form in oil tank (1), and the tank car still disposes pipeline installation case (2) that are located oil tank (1) below position, pipeline installation case (2) dispose with oil discharge pipe (3) of oil tank (1) intercommunication, oil discharge pipe (3) are including oil discharge connector (301), its characterized in that:
a group of guide vertical rods (103) are fixedly arranged in each independent oil cavity (102), a floating box body (8) is slidably arranged between the group of guide vertical rods (103), and an airflow injection pipe (104), a first distance sensor (10) and a second distance sensor (11) are arranged at the top of the oil tank (1) where each independent oil cavity (102) is located;
an electromagnetic mechanism (9) is arranged at the bottom of the oil tank (1) where each independent oil cavity (102) is located, and a magnetic suction plate (804) positioned right above the electromagnetic mechanism (9) is embedded in the bottom plate of the floating box body (8);
the utility model discloses a gas-filling device, including oil discharge pipe (3), gas supply pipeline (5), gas-filling pipe (14), normal air inlet valve (15), air feed mechanism (13), air flow sensor (4) are disposed in oil discharge pipe (3) position department, and every gas-filling pipe (104) position department all disposes injection pipe valve (105), pipeline mounting case (2) dispose with gas-filling pipe (104) intercommunication pneumatic tube (5), gas-filling pipe (5) position department disposes gas-filling sensor (6), air-filling pipe (5) upstream end connection air feed pipeline (14), air-filling pipe (14) upstream end connection normal air inlet valve (15), air feed mechanism (13).
2. The oil unloading pressure regulating device of the oil tank truck according to claim 1, wherein:
the direction of sensing detection of the first distance sensor (10) is opposite to the oil liquid area of the independent oil cavity (102), and the second distance sensor (11) is opposite to the top side surface of the floating box body (8).
3. The oil unloading pressure regulating device of the oil tank truck according to claim 1, wherein:
the downstream end of the air pressure pipe (5) is connected with an air supply main pipe (7), a plurality of branch pipes are arranged on the downstream of the air supply main pipe (7), each branch pipe is independently communicated with an air flow injection pipe (104), and the air flow injection pipe (104) is in injection communication with an independent oil cavity (102).
4. The oil unloading pressure regulating device of the oil tank truck according to claim 1, wherein:
the floating box body (8) is internally provided with a hollow cavity (801), guide plates (802) are arranged on two side surfaces of the floating box body (8), and guide sliding grooves (803) matched with the guide vertical rods (103) are formed in the guide plates (802).
5. The oil unloading pressure regulating device of the oil tank truck according to claim 1, wherein:
the air pressure pipe (5) comprises an air supply connection port (501), the air supply pipeline (14) is connected and installed at the position of the air supply connection port (501), and the normal air inlet valve (15) is located at the tail end of one branch of the air supply pipeline (14).
6. A method for regulating and controlling the oil unloading pressure of an oil tank truck, characterized in that the oil unloading pressure regulating and controlling device of the oil tank truck according to any one of claims 1 to 5 is adopted, comprising the following steps:
s1, connecting and installing an oil pipeline at the position of an oil unloading pipe (3), and connecting and installing a gas supply pipeline (14) at the position of a gas pressure pipe (5);
s2, opening a pipeline of an oil unloading pipe (3), simultaneously opening an injection pipe valve (105) of an air flow injection pipe (104) and a normal air inlet valve (15) of an air supply pipeline (14), enabling an air supply mechanism (13) to be inactive, enabling an oil tank (1) to begin to unload oil, enabling an oil level (12) in an independent oil cavity (102) to begin to descend, enabling a floating box body (8) to descend synchronously along with the oil level (12), enabling a first distance sensor (10) to sense the real-time distance of the oil level (12), and analyzing the depth D of residual oil of the oil level (12) in a current independent oil cavity (102) s The second distance sensor (11) senses and detects the real-time distance of the floating box body (8), and analyzes the oil liquid height difference delta D of the immersed oil liquid level (12) of the floating box body (8);
wherein, the distance between the first distance sensor (10) and the oil level (12) is set as D a The distance between the second distance sensor (11) and the floating box body (8) is set as D b Oil level difference Δd=d a -D b ；
If the vertical depth of the independent oil cavity (102) is L, the residual oil depth D of the oil level (12) is s ＝L-D a ；
S3, when the residual oil depth D of the oil liquid level (12) in the independent oil cavity (102) s Less than the preset oil unloading and speed reducing oil reference depth D of the system J When the air inlet valve (15) is closed in a normal state, the air supply mechanism (13) is started, the air supply mechanism (13) starts to inject air flow into the air pressure pipe (5) and the air supply main pipe (7) through the air supply pipeline (14), and the air pressure sensor (6) senses and detects air pressure parameters of the air flow injected into the independent oil cavity (102);
s4, when the residual oil depth D of the oil liquid level (12) in the independent oil cavity (102) s Continuing to descendWhen the pressure is low, the air flow continuously injected into the independent oil cavity (102) increases the air pressure of the independent oil cavity (102), the residual oil in the independent oil cavity (102) is influenced by the increased air pressure, and the attenuation degree of the oil discharge rate is reduced;
s5, when the oil level in the independent oil cavity (102) is equal to the depth D of residual oil s Less than the preset oil unloading and speed reducing oil reference depth D of the system J When the electromagnetic mechanism (9) at the bottom of the oil tank (1) is started, the electromagnetic mechanism (9) adsorbs the magnetic suction plate (804) at the bottom of the floating box body (8), the floating box body (8) is immersed into oil downwards until the oil height difference delta D is zero, and when the electromagnetic mechanism (9) stops increasing the electromagnetic suction and linearly reduces the electromagnetic suction along with the oil unloading process, the oil height difference delta D is kept in a zero state;
s6, when the distance parameter of the top side surface of the floating box body (8) sensed and detected by the second distance sensor (11) is the sinking distance parameter D of the floating box body (8) max When the oil level (12) is lower than the horizontal position of the top side surface of the floating box body (8), the electromagnetic mechanism (9) linearly reduces the electromagnetic suction force of the electromagnetic mechanism (9) according to the real-time parameter of the oil level difference delta D until the residual oil depth D of the oil level (12) in the independent oil cavity (102) s For a floating immersion depth D P When the electromagnetic mechanism (9) is powered off, the power is stopped;
wherein, the vertical thickness of the floating box body (8) is set as D Z The parameter of the sinking distance of the floating box body (8) is D max ＝L-D Z ；
S7, after the oil in the independent oil cavity (102) is completely discharged, the power-off of the air supply mechanism (13) is stopped.
7. The method for regulating and controlling the oil unloading pressure of the oil tank truck according to claim 6, wherein the method comprises the following steps:
let the density of the oil in the oil tank (1) be ρ A Let the weight of the floating box body (8) be M P The floating box body (8) normally discharges liquid volume V A ＝M P /ρ A Let the horizontal area of the floating box body (8) be S P The floating immersion depth D of the oil immersed in the floating box body (8) is not influenced by other external forces P ＝V A /S P 。
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