CN112811382A - Sealed oil discharge device of crude oil tank truck - Google Patents
Sealed oil discharge device of crude oil tank truck Download PDFInfo
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- CN112811382A CN112811382A CN202110182417.4A CN202110182417A CN112811382A CN 112811382 A CN112811382 A CN 112811382A CN 202110182417 A CN202110182417 A CN 202110182417A CN 112811382 A CN112811382 A CN 112811382A
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- 239000003921 oil Substances 0.000 title claims abstract description 205
- 239000010779 crude oil Substances 0.000 title claims abstract description 38
- 238000003860 storage Methods 0.000 claims abstract description 79
- 238000012546 transfer Methods 0.000 claims abstract description 47
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 21
- 239000010865 sewage Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 32
- 238000000034 method Methods 0.000 description 13
- 239000003208 petroleum Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 208000015994 miscarriage Diseases 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Images
Classifications
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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
- B67D7/36—Arrangements of flow- or pressure-control valves
-
- 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
- B67D7/78—Arrangements of storage tanks, reservoirs or pipe-lines
-
- 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
- B67D7/80—Arrangements of heating or cooling devices for liquids to be transferred
- B67D7/82—Heating only
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to a sealed oil discharge device of a crude oil tank truck, which comprises a hole sealing unit, an oil storage unit and a transmission unit which are sequentially connected; the hole sealing unit comprises a first valve, a filtering device and a second valve which are connected in sequence; the oil storage unit comprises an oil storage tank and a heating device arranged in the tank; an oil gas outlet at the top of the oil storage tank is connected with the transfer pump; an oil outlet at the bottom of the storage tank pipe is connected with the transfer pump; the transmission unit comprises a transfer pump, a third valve, a fourth valve and a fifth valve which are connected in sequence; a sixth valve is arranged between the oil gas outlet at the top of the oil storage tank and the transfer pump; and a pressure detector is arranged between the oil gas outlet and the sixth valve. The oil unloading device provided by the invention realizes closed unloading of oil, simultaneously conveys the oil and oil gas in the oil tank through different pipelines, avoids safety risks and oil gas leakage when the oil and the oil are stored in a mixed manner, realizes efficient oil unloading, and shortens the oil unloading time to 1/3 in the prior art.
Description
Technical Field
The invention relates to the technical field of oil unloading equipment, in particular to a closed oil unloading skid-mounted device of a crude oil tank truck.
Background
Petroleum is one of important energy sources in industrial and agricultural production, on one hand, the petroleum producing area and the selling area are unbalanced, and on the other hand, the demand of energy mainly based on petroleum is increasing, so that the transportation volume of petroleum tends to rise all the time.
For example, CN210825404U discloses a crude oil unloading device, which belongs to the field of petroleum transportation tools and comprises an oil unloading tank; the inlet pipe is arranged at the lower part of the oil unloading tank, and a valve is arranged on the inlet pipe; the outlet pipe is arranged at the bottom of the oil unloading tank and is connected with an oil collecting header; wherein, a detachable sealing cover plate is arranged on the oil unloading tank; when oil enters the oil drainage tank from the inlet pipe and flows into the oil drainage manifold through the outlet pipe, the oil drainage tank is sealed by the sealing cover plate. Can avoid the harm of poisonous and harmful gases such as hydrogen sulfide and benzene in the crude oil to personnel caused by crude oil volatilization and overflow in the oil unloading process, and avoid environmental pollution.
CN205653156U discloses be applied to fuel feeding, oil discharge device of electric power, petrochemical system, including advancing oil pipe and the oil storage tank through the pipeline intercommunication, advance the pipeline between oil pipe and the oil storage tank and be equipped with first stop valve, two parallelly connected power valves and second stop valve in proper order, still include the oil discharge pipeline, the pipeline between first stop valve and the power valves is linked together to the one end in oil discharge pipeline, the pipeline between the other end intercommunication second stop valve and the oil storage tank, is equipped with the third stop valve in the oil discharge pipeline. The oil unloading and supplying device is combined, and the oil unloading and supplying device shares an oil pump, a filter screen and an inlet and outlet valve, so that the investment of the oil supply pump and the related filter screen and valve is saved, and the system flow is simplified. The connecting ports between the valve and the pipeline are reduced, and the overall stability can be improved.
The mode of unloading on the station of tank wagon transportation crude oil is open unloading at present, because crude oil is oil gas water mixture, it can cause the polluted environment to unload in-process to have VOCs gas volatilization, and has the inflammability and explosive characteristic, and this brings a lot of potential safety hazards just for crude oil unloading work, consequently how to improve oil unloading efficiency and avoid the potential safety hazard in the time of reducing environmental pollution and become the thing that can not wait urgently. Although the prior art discloses that the crude oil is unloaded by adopting a closed system, the connection of an oil-gas pipeline and an oil storage tank still exists in the unloading process, so that the system has extremely poor tightness, oil gas leakage is easy to cause, and a large safety risk exists.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide a sealed oil unloading device of a crude oil tank truck, which can realize the independent transmission of oil gas and oil in the oil unloading process or the later stage of oil unloading, avoid the safety risk and oil gas leakage caused by the mixed storage of the oil gas and the oil gas, realize high-efficiency oil unloading, and at least shorten the oil unloading time to the original 1/3.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a sealed oil discharge device of a crude oil tank truck, which comprises a hole sealing unit, an oil storage unit and a transmission unit which are sequentially connected;
the hole sealing unit comprises a first valve, a filtering device and a second valve which are connected in sequence;
the oil storage unit comprises an oil storage tank and a heating device arranged in the tank;
the transmission unit comprises a transfer pump, a third valve, a fourth valve and a fifth valve which are connected in sequence;
the oil storage tank is provided with a liquid level meter;
an oil gas outlet at the top of the oil storage tank is connected with the transfer pump;
an oil outlet at the bottom of the storage tank pipe is connected with the transfer pump;
a sixth valve is arranged between the oil gas outlet at the top of the oil storage tank and the transfer pump; a pressure detector is arranged between the oil gas outlet and the sixth valve;
a pressure detection device is arranged between the transfer pump and the third valve;
and a moisture analysis device and a temperature detection device are arranged between the fourth valve and the fifth valve.
According to the oil unloading device provided by the invention, through the integral design of the device, the oil is unloaded in a sealed manner, the oil and the oil gas in the oil tank are conveyed through different pipelines, the safety risk and the oil gas leakage caused by the mixed storage of the oil and the oil gas are avoided, the efficient oil unloading is realized, and the oil unloading time is shortened to 1/3 in the prior art.
In the invention, the oil storage tank can be other oil storage equipment, namely, the oil storage tank is not limited to a tank-shaped oil storage equipment and can be other equipment capable of realizing oil storage. The size of the opening position of the oil inlet in the oil storage tank, the length, the shape, the opening direction and the like after the oil inlet is introduced into the oil storage equipment can be selected according to the feeding mode of the existing oil inlet into the oil storage equipment. If heavy oil is alternatively fed from the top, light oil may be fed from the bottom.
The inlet and the outlet of the transfer pump are provided with the safety valve relief valves, so that the operation safety is ensured.
As a preferred embodiment of the present invention, the first valve includes a snap valve or a ball valve.
Preferably, the filter comprises a basket filter.
Preferably, the second valve comprises an electrically operated on-off valve.
Preferably, the second valve is connected to a PLC controller.
As the preferable technical scheme of the invention, the oil storage tank is provided with an oil inlet.
Preferably, the oil inlet and the second valve are connected.
Preferably, as a preferred technical solution of the present invention, the pressure detector is connected to a PLC controller.
Preferably, the sixth valve comprises an electrically operated on-off valve.
Preferably, a seventh valve is arranged between the oil outlet at the bottom of the storage tank pipe and the transfer pump.
Preferably, the seventh valve comprises a shut-off valve.
As a preferable technical scheme of the invention, the liquid level meter is connected with the PLC.
As a preferred technical scheme of the invention, the heating device comprises a heat tracing pipe.
Preferably, the heat trace pipe is provided with an eighth valve and a ninth valve.
Preferably, the eighth valve and the ninth valve are both manual ball valves.
As the preferable technical scheme of the invention, the bottom of the oil storage tank is provided with a sewage draining outlet.
Preferably, the sewage draining outlet is provided with a manual ball valve.
As a preferable technical scheme of the invention, the conveying pump comprises a screw gas-liquid mixed conveying pump.
Preferably, the pressure detection means comprises a pressure gauge.
Preferably, the third valve comprises a check valve.
As a preferable technical solution of the present invention, the moisture analyzing device includes a moisture analyzer.
Preferably, the temperature detection means comprises a thermometer.
Preferably, the moisture analysis device and the temperature detection device are respectively connected with a PLC controller.
As a preferable aspect of the present invention, the fourth valve includes a shutoff valve.
Preferably, the fifth valve comprises an electrically operated valve.
Preferably, the fifth valve is connected with a PLC controller.
Compared with the prior art, the invention at least has the following beneficial effects:
(1) the fully-closed unloading device can be emergently cut off, oil and gas are respectively transmitted in the transmission process, the fully-closed unloading device has the advantages of safety and environmental protection, the water content, the temperature and the pressure are monitored on line, the oil transfer pump is controlled in a frequency conversion mode, and the automation degree is high.
(2) The oil tank truck can accept a plurality of oil tank trucks to unload simultaneously, has high oil unloading efficiency, can realize the zero-position-free tank heavy oil unloading process, simplifies the process, reduces the oil loss and avoids repeated heating. The oil discharge time is shortened to 1/3 in the prior art on the basis of improving safety, environmental protection and energy conservation. Can be designed to be independently prized, and is convenient and quick to install.
Drawings
Fig. 1 is a sealed oil discharge device of a crude oil tanker provided by the embodiment of the invention.
In the figure: 1-a first valve, 2-a filtering device, 3-a second valve, 4-an oil storage tank, 4.1-a heating device, 4.1.1-an eighth valve, 4.1.2-a ninth valve, 5-a seventh valve, 6-a manual ball valve, 7-a liquid level meter, 8-a sixth valve, 9-a transfer pump, 10-a pressure detection device, 11-a third valve, 12-a moisture analysis device, 13-a temperature detection device, 14-a fourth valve, 15-a fifth valve and 16-a pressure detector.
The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.
Detailed Description
To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:
examples
The embodiment provides a sealed oil discharge device of a crude oil tank truck, as shown in fig. 1, the sealed oil discharge device of the crude oil tank truck comprises a hole sealing unit, an oil storage unit and a transmission unit which are sequentially connected;
the hole sealing unit comprises a first valve 1, a filtering device 2 and a second valve 3 which are connected in sequence;
the first valve 1 can be a breaking valve or a ball valve;
the filter is a basket filter;
the second valve 3 comprises an electrically operated on-off valve;
the second valve 3 is connected with a PLC controller.
The oil storage unit comprises an oil storage tank 4 and a heating device 4.1 arranged in the tank;
the oil storage tank 4 is provided with an oil inlet; the oil inlet is connected with the second valve 3.
An oil gas outlet at the top of the oil storage tank 4 is connected with the transfer pump 9;
an oil outlet at the bottom of the storage tank pipe is connected with the transfer pump 9;
a sixth valve 8 is arranged between an oil gas outlet at the top of the oil storage tank 4 and the transfer pump 9;
a pressure detector 16 is arranged between the oil gas outlet and the sixth valve 8;
the pressure detector 16 is connected with the PLC;
the sixth valve 8 is an electric control valve;
a seventh valve 5 is arranged between the oil outlet at the bottom of the storage tank pipe and the transfer pump 9;
the seventh valve 5 is a stop valve.
The oil storage tank 4 is provided with a liquid level meter 7;
the liquid level meter 7 is connected with the PLC.
A sewage draining outlet is formed in the bottom of the oil storage tank 4;
the sewage draining port is provided with a manual ball valve 6.
The heating device 4.1 comprises a heat tracing pipe;
the outlet and the inlet of the heat tracing pipe are respectively provided with an eighth valve 4.1.1 and a ninth valve 4.1.2;
the eighth valve 4.1.1 and the ninth valve 4.1.2 are both manual ball valves.
The transfer unit comprises a transfer pump 9, a third valve 11, a fourth valve 14 and a fifth valve 15 which are connected in sequence. The transfer pump 9 comprises a screw gas-liquid mixed transfer pump 9;
a pressure detection device 10 is arranged between the transfer pump 9 and the third valve 11;
the pressure detection means 10 comprises a pressure gauge;
said third valve 11 comprises a non-return valve.
A moisture analysis device 12 and a temperature detection device 13 are arranged between the fourth valve 14 and the fifth valve 15; the moisture analysis device 12 includes a moisture analyzer;
the temperature detection device 13 comprises a temperature meter;
the moisture analysis device 12 and the temperature detection device 13 are respectively connected with the PLC.
The fourth valve 14 is a stop valve;
the fifth valve 15 is an electric valve;
the fifth valve 15 is connected with a PLC controller.
Application example
The oil discharge is carried out by adopting the closed oil discharge device of the crude oil tank truck provided by the embodiment in the application example, and the specific process is as follows:
the input port of the first valve 1 is used as a crude oil inlet and is connected with an oil unloading hose of an oil unloading tank truck, and the first valve is manually opened during unloading and closed when the first valve is not unloaded. The output of the first valve 1 is connected to the input of the second valve 3 via a filter device 2, which in this application is a basket filter, for filtering solid particles and impurities from the crude oil. The second valve 3 is electrically connected to the PLC and can be remotely closed by the PLC in a second emergency. The output port of the second valve is connected with the input port of the oil storage tank 4 through a pipeline, and crude oil input by the oil unloading tank truck sequentially passes through the first valve 1, the filtering device 2 and the second valve 3 and then enters the oil storage tank 4.
The oil storage tank 4 is a Φ 1200 × 2000 horizontal storage tank in the present application example, and is used for temporarily storing crude oil. The heating device 4.1 is arranged in the oil storage tank 4, and the heating device 4.1 is a heat tracing pipe used for heating the crude oil in the oil storage tank 4 in a low-temperature environment. The input port and the output port of the heat tracing pipe are respectively provided with a ninth valve 4.1.2 and an eighth valve 4.1.2 which are manual ball valves and are respectively arranged at the bottom of the shell of the oil storage tank 4. The bottom of the shell of the oil storage tank 4 is provided with a sewage valve which is a manual ball valve 6 and is connected with a sewage pipe for discharging impurities in the oil storage tank 4. The one end of 4 casings in oil storage tank is provided with level gauge 7, and the both ends of level gauge 7 are connected with oil storage tank 4 through the flange respectively, and level gauge 7 is connected with PLC for the height of crude oil liquid level in the monitoring oil storage tank 4, and with the height information transmission of liquid level to PLC. The delivery outlet of oil storage tank 4 sets up in the bottom of the jar body, and the delivery outlet of oil storage tank 4 is connected with the input port of seventh valve, and seventh valve 5 is in normally open state as the crude oil delivery outlet of oil storage tank 4.
The oil gas delivery outlet of oil storage tank 4 sets up in the top of the jar body, and the oil gas delivery outlet of oil storage tank 4 passes through the pipeline and is connected with the input port of sixth valve 8, and sixth valve 8 is normally open state for the discharge of control jar internal volatile gas. A pressure detector 16 is arranged between the oil gas outlet and the sixth valve 8; the pressure detector 16 is connected with the PLC; an output port of the sixth valve 8 and an output port of the seventh valve 5 are connected with an input port of the transfer pump 9 through pipelines, the transfer pump 9 is a screw gas-liquid mixed transfer pump, an output port of the transfer pump 9 is connected with an input port of the third valve 11 through pipelines, the third valve 11 is a check valve, the transfer pump 9 is electrically connected with the PLC, and the liquid level meter 7 and the transfer pump 9 are in variable frequency linkage, so that the crude oil unloading efficiency is improved. The third valve 11 is used for preventing crude oil from flowing backwards, an output port of the third valve 11 is connected with an input port of the fifth valve 15 through the fourth valve 14, an output port of the fifth valve is connected with the three-phase separator, and the fourth valve 14 and the fifth valve 15 are in a normally open state. The fifth valve 15 is electrically connected to the PLC and can be remotely closed by the PLC in case of emergency. Through increasing the oil gas initiative miscarriage link, the oil gas that will unload oil in-process production passes through the 9 pump sending of transfer pump to three-phase separator simultaneously with original liquid phase, avoids directly discharging the oil gas in the atmosphere, reduces environmental pollution, also need not to link to each other oil gas pipeline and oil storage tank, reduces the safety risk, really realizes airtight unloading.
Meanwhile, a pipeline between the transfer pump 9 and the third valve 11 is provided with a pressure detection device 10 which is a pump outlet pressure gauge used for displaying the pressure value of the output port of the transfer pump 9 on site; a moisture analysis device 12 and a temperature detection device 13 are sequentially arranged on a pipeline between the fourth valve 14 and the fifth valve 15. The moisture analysis device 12 and the temperature detection device 13 are respectively electrically connected with the PLC, the moisture analysis device 12 is a moisture analyzer for monitoring the water content in the crude oil, and the temperature detection device 13 is a temperature measuring instrument for measuring the temperature value of the crude oil. The unloading process is automatically controlled by a PLC, data acquisition such as water content, temperature, liquid level and the like is carried out, the frequency conversion adjustment is carried out on the delivery pump 9, and the whole process monitoring of the closed unloading is realized.
The pressure detector 16 and the sixth valve 8 between the oil gas outlet and the sixth valve 8, the transfer pump 9 and the liquid level measuring device 7 are controlled in an interlocking manner through a PLC (programmable logic controller), and the method comprises the following specific steps:
firstly, before oil unloading operation is started each time, the sixth valve 8 is adjusted to be in an opening state;
after the operation starts, a pressure detector 16 communicated with the oil storage tank 4 gives an alarm at high pressure (the oil storage tank 4 is influenced by gravity oil feeding and can be determined by numerical value change of a liquid level meter 7 in a linkage manner), the transfer pump 9 is started at the lowest frequency in an interlocking manner, the numerical value of the pressure gauge 16 is reduced and tends to be normal, and the oil feeding of the oil storage tank 4 by gravity is recovered;
thirdly, before the liquid level of the liquid level meter 7 reaches a high liquid level (the liquid level of the transfer pump is started in an interlocking manner), the pressure detector 16 gives a low-pressure alarm (the low-pressure value is 50% of the saturated vapor pressure of the oil product in the application example) and locks and stops the transfer pump 9 in parallel;
if no high pressure and overpressure exist after the operation of the second step is started and the gravity oil inlet of the oil storage tank 4 is not influenced, the sixth valve 8 is closed until the liquid level meter 7 reaches a high liquid level (the liquid level of the transfer pump is started in an interlocking manner), and meanwhile, the transfer pump 9 is started normally;
fifthly, if normal operation is carried out after the fourth step, the pressure detector 16 needs to interlockingly reduce the working frequency of the transfer pump 9 when low-pressure alarm is carried out, and the pressure detector 16 carries out ultralow-pressure alarm (the ultralow pressure value of the application is designed as negative pressure +0.1MPa of the design of the oil storage tank 4 and the accessory system) to interlockingly stop the transfer pump 9;
sixthly, in the operation process, after the transfer pump 9 is stopped by interlocking, the interlocking is recovered from the second step.
The interlock described above is performed as the device operates normally. Other alarm interlocks of safety, quality and the like are higher than the interlock. The oil discharge stagnation caused by the pressure build-up of the oil storage equipment can be prevented. After gas-liquid mixed conveying enters the oil storage equipment in the oil unloading process, gas-phase materials cause cavitation of a conveying pump, so that the oil storage equipment is vacuumized to accelerate oil-gas volatilization, and even the oil storage equipment and a tank car are prevented from being sucked to be shriveled.
According to the oil unloading device provided by the invention, through the integral design of the device, the oil is unloaded in a sealed manner, the oil and the oil gas in the oil tank are simultaneously conveyed through different pipelines, the safety risk and the oil gas leakage caused by the mixed storage of the oil and the oil gas are avoided, the efficient and energy-saving oil unloading is realized, and the oil unloading time is shortened to 1/3 in the prior art.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. The sealed oil unloading device of the crude oil tank truck is characterized by comprising a hole sealing unit, an oil storage unit and a transmission unit which are sequentially connected;
the hole sealing unit comprises a first valve, a filtering device and a second valve which are connected in sequence;
the oil storage unit comprises an oil storage tank and a heating device arranged in the tank;
the transmission unit comprises a transfer pump, a third valve, a fourth valve and a fifth valve which are connected in sequence;
the oil storage tank is provided with a liquid level meter;
an oil gas outlet at the top of the oil storage tank is connected with the transfer pump;
an oil outlet at the bottom of the storage tank pipe is connected with the transfer pump;
a sixth valve is arranged between the oil gas outlet at the top of the oil storage tank and the transfer pump; a pressure detector is arranged between the oil gas outlet and the sixth valve;
a pressure detection device is arranged between the transfer pump and the third valve;
and a moisture analysis device and a temperature detection device are arranged between the fourth valve and the fifth valve.
2. The closed oil unloading device of the crude oil tanker according to claim 1, wherein the first valve comprises a breaking valve or a ball valve;
preferably, the filter comprises a basket filter;
preferably, the second valve comprises an electrically operated on-off valve;
preferably, the second valve is connected to a PLC controller.
3. The closed oil discharge device of the crude oil tanker according to claim 1 or 2, wherein the oil storage tank is provided with an oil inlet; the oil inlet is connected to the second valve.
4. The closed oil discharge device of the crude oil tanker according to claim 1, wherein the pressure detector is connected with a PLC controller;
preferably, the sixth valve comprises an electrically operated on-off valve;
preferably, a seventh valve is arranged between the oil outlet at the bottom of the storage tank pipe and the transfer pump;
preferably, the seventh valve comprises a shut-off valve.
5. The closed oil unloading device of the crude oil tanker according to claim 1 or 4, wherein the liquid level meter is connected with a PLC controller.
6. The enclosed oil-discharging device of crude oil tanker according to claim 1, characterized in that, said heating device comprises a heat tracing pipe;
preferably, the outlet and the inlet of the heat tracing pipe are respectively provided with an eighth valve and a ninth valve;
preferably, the eighth valve and the ninth valve are both manual ball valves.
7. The closed oil unloading device of the crude oil tank truck as claimed in claim 1 or 6, wherein the bottom of the oil storage tank is provided with a sewage draining outlet;
preferably, the sewage draining outlet is provided with a manual ball valve.
8. The closed oil unloading device of the crude oil tanker according to claim 1, wherein the transfer pump comprises a screw gas-liquid mixing and conveying pump;
preferably, the pressure detection means comprises a pressure gauge;
preferably, the third valve comprises a check valve.
9. The closed oil discharge device of the crude oil tanker according to claim 1 or 7, wherein the moisture analysis device comprises a moisture analyzer;
preferably, the temperature detection means comprises a temperature meter;
preferably, the moisture analysis device and the temperature detection device are respectively connected with a PLC controller.
10. The closed oil-discharging device of the crude oil tanker according to claim 9, wherein said fourth valve comprises a stop valve;
preferably, the fifth valve comprises an electrically operated valve;
preferably, the fifth valve is connected with a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110182417.4A CN112811382A (en) | 2021-02-07 | 2021-02-07 | Sealed oil discharge device of crude oil tank truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110182417.4A CN112811382A (en) | 2021-02-07 | 2021-02-07 | Sealed oil discharge device of crude oil tank truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112811382A true CN112811382A (en) | 2021-05-18 |
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ID=75864991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110182417.4A Pending CN112811382A (en) | 2021-02-07 | 2021-02-07 | Sealed oil discharge device of crude oil tank truck |
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| CN (1) | CN112811382A (en) |
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