CN110835087A - Oil discharge system exhaust apparatus and oil discharge system - Google Patents
Oil discharge system exhaust apparatus and oil discharge system Download PDFInfo
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- CN110835087A CN110835087A CN201810928068.4A CN201810928068A CN110835087A CN 110835087 A CN110835087 A CN 110835087A CN 201810928068 A CN201810928068 A CN 201810928068A CN 110835087 A CN110835087 A CN 110835087A
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- 239000011521 glass Substances 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims abstract description 17
- 238000010992 reflux Methods 0.000 claims abstract description 14
- 230000000007 visual effect Effects 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000003063 flame retardant Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 16
- 230000005611 electricity Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- B67D7/32—Arrangements of safety or warning devices; Means for preventing unauthorised delivery of liquid
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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
- B67D7/0476—Vapour recovery systems
- B67D7/0478—Vapour recovery systems constructional features or components
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention discloses an oil discharge system and an exhaust device thereof. The oil discharge system comprises an oil discharge loop and an exhaust device. The oil unloading loop comprises an oil inlet pipeline, an oil pump and an oil outlet pipeline, wherein the oil inlet pipeline, the oil pump and the oil outlet pipeline are sequentially connected. The oil discharge system exhaust device comprises an exhaust stop valve, a straight-through sight glass, an exhaust pipeline and a reflux tank. One end of the exhaust stop valve is in fluid connection with a high point of an oil inlet pipeline of the oil unloading system, and one end of the through sight glass is in fluid connection with the other end of the exhaust stop valve. The other end of the straight-through sight glass is in fluid connection with one end of the exhaust pipeline, and the other end of the exhaust pipeline extends into the reflux tank. The exhaust pipeline is close to the position of the backflow tank and is further provided with a check stop valve, and the top of the backflow tank is provided with an exhaust valve. The invention solves the problem that oil vapor is directly discharged to an indoor pump room when the oil pump generates air resistance and exhausts, and eliminates the potential safety hazard of an operation site.
Description
Technical Field
The invention belongs to the field of oil transportation, and particularly relates to an exhaust device of an oil unloading system and the oil unloading system.
Background
The oil discharge refers to that oil products in an oil tank truck and an underground oil tank are conveyed to an oil storage tank area through an oil conveying pipeline by an oil pump. In the oil unloading process, oil in the oil conveying pipeline can volatilize under the influence of temperature to generate oil vapor, and when the oil vapor is accumulated in the oil conveying pipeline too much, the air resistance phenomenon can occur. The air lock phenomenon may cause insufficient or interrupted oil supply of the oil pump, resulting in the failure of the oil pump to deliver the oil to the destination. Therefore, it is necessary to discharge the oil vapor in the oil delivery pipe through the exhaust device.
At present, an open type exhaust valve is usually arranged at the highest point of an oil inlet pipeline of an oil pump. When certain oil vapor exists in the oil pipeline, the oil vapor flows to an open type exhaust valve arranged at the highest point of the oil inlet pipeline because the density of the oil vapor is lower than that of the oil liquid. The oil vapor is vented through an open vent valve, while possibly a small amount of liquid oil is vented along with the oil vapor. Because the open type exhaust valve is usually arranged in a working site, namely an indoor pump room, the discharged oil vapor and liquid oil are also directly discharged in the working site, and potential safety hazards exist.
Disclosure of Invention
The embodiment of the invention provides an exhaust device of an oil unloading system and the oil unloading system, which aim to solve the safety problem that an open exhaust valve exhausts oil steam indoors in the oil unloading process. The technical scheme is as follows:
the embodiment of the invention provides an exhaust device of an oil unloading system, which comprises: the oil discharge system comprises an exhaust stop valve, a through sight glass, an exhaust pipeline and a reflux tank, wherein one end of the exhaust stop valve is in fluid connection with a high point of an oil inlet pipeline of the oil discharge system, and one end of the through sight glass is in fluid connection with the other end of the exhaust stop valve; the other end of direct sight glass with exhaust pipe's one end fluid connection, exhaust pipe's the other end stretches into inside the backward flow jar, exhaust pipe is close to backward flow jar department still installs the non return stop valve, the top of backward flow jar is equipped with discharge valve.
Optionally, the feed-through mirror comprises: the cross-shaped pipeline comprises a circulation pipe and a visual pipe which are vertically connected and communicated, two ends of the circulation pipe are respectively connected with the exhaust pipeline and the exhaust stop valve, and two ends of the visual pipe are respectively provided with the glass visual mirrors.
Optionally, the feed-through mirror further comprises an antistatic component mounted on the cross-shaped pipe.
Optionally, the exhaust device of the oil unloading system, the return tank includes a tank body and a manhole cover installed on the top of the tank body, and the exhaust pipeline penetrates through the manhole cover and extends into the tank body.
Optionally, the distance between one end of the exhaust pipeline extending into the return tank and the bottom of the return empty oil tank is 150-250 mm.
Optionally, the exhaust line is a seamless steel pipe.
Optionally, the exhaust valve is a fire retardant exhaust valve.
The embodiment of the invention also provides an oil unloading system, which comprises an oil unloading loop, wherein the oil unloading loop comprises an oil inlet pipeline, an oil unloading pump and an oil outlet pipeline, and the oil inlet pipeline, the oil unloading pump and the oil outlet pipeline are sequentially connected; the oil discharge system also comprises the exhaust device, and the exhaust stop valve in the exhaust device is connected with the high point of the oil inlet pipeline.
Optionally, a filter is installed at the highest point of the oil inlet pipeline, and the exhaust device is connected with the filter.
Optionally, the oil discharge system further comprises an oil inlet and outlet pipe connecting pipeline, one end of the oil inlet and outlet pipe connecting pipeline is connected with one end of the oil inlet pipe close to the oil inlet, the other end of the oil inlet and outlet pipe connecting pipeline is connected with one end of the oil outlet pipe close to the oil outlet, and a disconnecting stop valve is installed on the oil inlet and outlet pipe connecting pipeline.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least: the oil-gas mixture in the pipeline during oil unloading operation can be discharged to the reflux tank through the exhaust device, so that the phenomenon of air resistance of the oil pump is avoided. Meanwhile, the backflow tank is arranged outdoors, so that oil vapor can be effectively prevented from being directly discharged into an indoor pump room, and potential safety hazards of an operation site are eliminated.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an oil discharge system provided in an embodiment of the present invention;
FIG. 2 is a schematic view of a feed-through mirror according to an embodiment of the present invention;
FIG. 3 is a schematic view of a reflux drum provided by an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an oil discharge system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of an oil discharge system according to an embodiment of the present invention. As shown in fig. 1, the oil discharge system includes an oil discharge circuit 1. The oil discharge circuit 1 includes an oil inlet line 10, an oil pump 20, and an oil outlet line 30. The oil inlet pipeline 10, the oil pump 20 and the oil outlet pipeline 30 are connected in sequence.
Optionally, at least one shut-off valve is mounted on the oil feed line 10. For example, 3 in the embodiment shown in fig. 1, a first stop valve 13, a second stop valve 14, and a third stop valve 15. The first stop valve 13, the second stop valve 14 and the third stop valve 15 are respectively installed on three branches of an oil inlet of the oil inlet pipeline 10, and the first stop valve 13, the second stop valve 14 and the third stop valve 15 respectively control connection or disconnection of the branches.
Optionally, a filter 11 is further installed on the oil inlet pipeline 10, the filter 11 is installed at an inlet of the oil pump 20, and the filter 11 is used for preventing impurities in the liquid oil from entering the oil pump 20.
In this embodiment, a backup valve 12 is also installed on the oil feed line 10. A backup valve 12 is installed between an oil inlet of the oil feed line 10 and the filter 11, and the backup valve 12 is installed near the filter 11. The backup valve 12 is used to handle an emergency situation in an oil transportation operation.
Alternatively, the oil pump 20 may be a centrifugal pump.
Optionally, at least one shut-off valve is mounted on the flowline 30. For example, 2 in the embodiment shown in fig. 1, a fourth cut-off valve 31 and a fifth cut-off valve 32. The fourth stop valve 31 and the fifth stop valve 32 are respectively installed on two branches of the oil outlet pipeline 30, and the fourth stop valve 31 and the fifth stop valve 32 respectively control connection or disconnection of the branch where the fourth stop valve 31 and the fifth stop valve 32 are located.
The oil discharge system shown in fig. 1 further includes an air discharge device 40. The exhaust apparatus 40 is fluidly connected to a high point of the oil inlet line 10. The high point of the oil inlet pipeline refers to the part of the oil inlet pipeline 10 with a higher horizontal height, and can be the highest point of the oil inlet pipeline. In practice, the filter 11 is usually disposed at the highest point of the oil inlet pipeline, so in this embodiment, the exhaust device 40 can be connected with the oil inlet pipeline 10 through the filter 11. The fluid connection means that the pipelines are in a communication state and can be used for fluid to pass through.
In the present embodiment, the exhaust device 40 includes an exhaust cut-off valve 41 and a through-view mirror 42. One end of the exhaust cut-off valve 41 is fluidly connected to a high point of the oil feed line 10 of the oil discharge system for opening or closing the exhaust device 40. One end of the through mirror 42 is fluidly connected to the other end of the exhaust shutoff valve 41, and the through mirror 42 can observe the state of the fluid flowing through the through mirror 42.
Fig. 2 is a schematic view of a through view mirror provided in an embodiment of the present invention. As shown in fig. 2, the through mirror 42 illustratively includes a cross-shaped duct 421 and a glass mirror 422. The cross-shaped pipe 421 includes a flow tube 4211 and a sight tube 4212 which are vertically connected and communicated with each other. Both ends of the flow pipe 4211 are connected to the exhaust line 40 and the exhaust shutoff valve 41, respectively, and the flow pipe 4211 allows fluid to flow therethrough. The glass mirrors 422 are provided at both ends of the visual tube 4212, respectively, and the glass mirrors 422 are used to observe the state of the fluid in the flow tube 4211.
For example, in fig. 2, a connection flange 4213 and a connection flange 4214 are provided at both ends of a flow pipe 4211, respectively, one end of the flow pipe 4211 is connected to the exhaust shutoff valve 31 via the connection flange 4213, and the other end of the flow pipe 4211 is connected to the exhaust line 40 via the connection flange 4214. The circulation pipe 4211 is connected with the exhaust pipeline 43 and the exhaust stop valve 41 through the connecting flange, so that convenience in realization and reliable connection are realized.
As shown in fig. 2, the visual tube 4212 is provided at both ends thereof with a fixing flange 424 and bolts 425 matching with the fixing flange 424, respectively. Two fixing flanges 424 fix the glass mirrors 422 to both ends of the sight tube 4212, respectively.
Optionally, the through mirror 42 further includes an antistatic component 423 mounted on the cross pipe 421, and the antistatic component 423 can prevent the through mirror 42 from generating static electricity. Further, the static electricity preventing part 423 may be a copper wire clip, and the copper wire clip may be mounted on the bolt 425.
In order to stably mount the through mirror 42, a channel steel may be used to support the through mirror 42.
Referring again to fig. 1, exhaust 40 also includes an exhaust line 43 and a reflux drum 44. One end of the exhaust line 43 is fluidly connected to the other end of the feed-through mirror 42, and the other end of the exhaust line 43 extends into the interior of the reflux drum 44. Exhaust line 43 discharges fluid flowing from straight-through mirror 42 to return tank 44. The return tank 44 is used to store the fluid flowing out of the exhaust pipe 43.
Wherein, exhaust pipe 43 can be seamless steel pipe, and seamless steel pipe's diameter can be 25mm, can reach oil gas emission requirement, can save material cost again.
Optionally, a check stop valve 45 is installed in the exhaust line 43 near the return tank 44, and the check stop valve 45 prevents the oil vapor in the return tank from flowing back.
Fig. 3 is a schematic view of a reflux drum according to an embodiment of the present invention. As shown in fig. 3, the reflow tank 44 may include a tank body 441 and a manhole cover 442 installed at the top of the tank body 441, and the exhaust duct 43 extends into the tank body 441 through the manhole cover 442.
Illustratively, the manhole cover 442 is mounted on the top of the tank 441 by bolts. Alternatively, vent line 43 may be welded to manhole cover 442. Thus, the manhole cover 442 and the exhaust pipe 43 can be taken to other places for processing and then taken to the site for installation, and the operation of oil discharge is not affected by the fire during construction.
Optionally, the distance h between one end of the exhaust pipe 45 extending into the return tank 44 and the bottom of the return tank 44 is 150mm-250mm, so as to prevent the liquid oil product discharged together with the oil vapor from splashing into the tank to cause electrostatic hazard.
The reflux drum 44 also includes a vent valve 443 disposed at the top of the reflux drum 44. In this embodiment, vent valve 443 is positioned at the highest arc apex of manhole cover 442.
Optionally, the exhaust valve 443 may be a fire-retardant breather valve that can block external fire from passing into the return tank 44 and maintain pressure equilibrium within the return tank 44.
Optionally, the oil discharge system further comprises an oil inlet and outlet pipe connection 50. The oil inlet and outlet pipe connecting line 50 has one end connected to the inlet of the oil inlet pipe 10 and the other end connected to the outlet of the oil outlet pipe 30. The oil inlet and outlet pipe connection line 50 is provided with a disconnecting shutoff valve 51, and the disconnecting shutoff valve 51 is used for connecting or disconnecting the oil inlet line 10 and the oil outlet line 30.
The operation of the oil discharge system shown in fig. 1 will be described with reference to fig. 1.
During the oil discharge operation, the oil inlet line 10 is connected to a tank truck or an underground tank (not shown) through at least one of the first, second, and third cut-off valves 13, 14, and 15. When the oil tank truck is in operation, the stop valve connected with the oil tank truck or the underground oil tank is opened, and at least one of the fourth stop valve 31 and the fifth stop valve 32 on the oil outlet pipeline 30 is opened. The backup valve 12 on the oil feed line 10 is closed, and the disconnecting shutoff valve 51 on the inlet-outlet pipe connection line 50 is closed. The oil liquid is delivered to the oil pump 20 through the oil inlet pipeline 10, then to the oil outlet pipeline 30 through the oil pump 20, and then delivered to the destination through the oil outlet pipeline 30.
The oil liquid can volatilize under the influence of temperature and produce oil vapor, when oil vapor piles up too much in oil pipeline, the air lock phenomenon can appear in oil pump 20. The air lock phenomenon may cause the oil pump 20 to supply insufficient oil or to be interrupted, so that the oil pump 20 cannot deliver the oil quality to the destination. Therefore, when the air lock phenomenon occurs in the oil pump 20, the exhaust stop valve 41 and the check stop valve 45 in the exhaust device 40 need to be opened to perform the exhaust operation, and the oil vapor and a small amount of liquid oil flow into the return tank 44 through the exhaust stop valve 41, the through mirror 42 and the return line 43. Fluid flow within through mirror 42 can be observed through glass mirror 422 during venting. If there is oil phase oil flowing through the through-view mirror 42, which indicates that the gas in the pump body is exhausted, the exhaust stop valve 41 and the check stop valve 45 are closed, and the oil pump 20 can resume normal operation.
In addition, during non-oil-discharge operation, the first stop valve 13, the second stop valve 14 and the third stop valve 15 at the oil inlet in the oil inlet pipeline 10 are all closed, and the backup valve 12 on the oil inlet pipeline 10 is also closed. The fourth and fifth cut-off valves 31 and 32 at the oil outlet in the oil outlet line 30 are all closed. At this time, liquid oil is also present in the oil inlet pipe 10 and the oil outlet pipe 30. When the liquid oil in the oil discharge pipeline is in a high-temperature state, a large amount of oil vapor volatilized by the liquid oil causes the pressure in the oil discharge pipeline to rise, and the pressure building danger exists in the oil discharge pipeline, so the pressure relief operation is needed. At this time, the disconnecting cut-off valve 51 of the inlet/outlet pipe connection line 50 is opened to allow the inlet pipe 10 to be communicated with the outlet pipe 30. And the exhaust stop valve 41 and the check stop valve 43 in the return line 40 are opened to perform the exhaust operation, and the oil vapor and a small amount of liquid oil flow into the return tank 44 through the exhaust stop valve 41, the through sight glass 42 and the return line 43. The flow of gas within through mirror 42 can be observed through glass mirror 422 during venting. If liquid oil product flows through the through sight glass 42, which indicates that the gas in the oil pipeline is exhausted, the exhaust stop valve 41 and the check stop valve 45 can be closed, and the pressure in the oil pipeline can be recovered to be normal.
When the oil vapor and the liquid oil in the reflux tank 44 are reduced in temperature and contracted in volume to form negative pressure, the tank is prevented from being held back by supplementing air into the tank through the fire-retardant breather valve 54. When the oil temperature rises to form positive pressure, the mixed gas is discharged through the starting of the fire-retardant breather valve 54 to reduce the pressure in the reflux tank 50, so that the tank expansion is prevented.
Fig. 4 is a schematic structural diagram of an oil discharge system according to an embodiment of the present invention. The oil discharge system includes at least two sub oil discharge systems, for example, the oil discharge system in fig. 4 includes two sub oil discharge systems, a sub oil discharge system a and a sub oil discharge system b.
Each sub oil unloading system at least comprises an oil unloading loop and an exhaust device. For example, the oil discharge system b in fig. 4 includes two sub oil discharge circuits, the oil discharge circuit 2 and the oil discharge circuit 3. Two or more of the exhausts of the same sub-unloader system may share a return tank, e.g., exhaust 40a and exhaust 40b of FIG. 4 share a return tank 44.
The oil discharge circuit 1 in fig. 4 is the oil discharge circuit in the above embodiment, and the structures of the oil discharge circuit 2 and the oil discharge circuit 3 are respectively the same as those of the oil discharge circuit 1. The exhaust device 40 is the exhaust device 40 in the above embodiment. The exhaust apparatus 40a and the exhaust apparatus 40b in fig. 4 are the same as the exhaust apparatus 40 except that they share the same return tank 44. The manner of communication between the oil discharge circuit and the exhaust device in this embodiment is also the same as that of the oil discharge circuit and the exhaust device in the above embodiment.
During the oil unloading operation, each sub-oil unloading system unloads one oil product. In this embodiment, different sub-unloading systems can correspond to different oil products. For example, the sub-unloading system a in this embodiment unloads gasoline, and the sub-unloading system b unloads diesel. In other embodiments, different sub-oil discharge systems may correspond to the same oil product.
The working process of the sub oil discharge system a is the same as that of the oil discharge system in the above embodiment. The exhaust apparatus 40a and the exhaust apparatus 40b in the sub-oil discharge system b operate in the same manner as the exhaust apparatus 40 in the oil discharge system a. And thus a detailed description is omitted herein.
It should be noted that the pipelines in the embodiments of the present invention may be formed by connecting one or more pipelines. The connection between the pipelines can select various connection modes such as joints (including but not limited to straight joints, elbows and the like), direct welding and the like according to actual needs.
In the embodiment of the invention, the oil-gas mixture in the pipeline during oil unloading operation can be discharged to the reflux tank through the exhaust device, so that the air resistance phenomenon of the oil pump is avoided, and the oil-gas separator is particularly suitable for an oil unloading system adopting the oil pump without self-absorption capacity. Meanwhile, the backflow tank is arranged outdoors, so that oil vapor can be effectively prevented from being directly discharged into an indoor pump room, and potential safety hazards of an operation site are eliminated. In addition, whether the oil vapor in the oil conveying pipeline is completely discharged can be determined by whether the liquid oil flows through the through view mirror arranged on the exhaust device. In addition, the exhaust device provided by the embodiment of the invention has the advantages of simple structure, simplicity and convenience in installation, convenience in operation and easiness in popularization and implementation.
The through sight glass can be prevented from generating static electricity by the static electricity preventing component arranged on the through sight glass. The exhaust pipeline penetrates through the manhole cover to extend into the tank body, and the distance between one end of the backflow tank and the bottom of the emptying oil tank is 150-250 mm, so that the liquid oil products discharged together with oil vapor can be prevented from being splashed into the tank to generate electrostatic danger. The oil inlet pipe and the oil outlet pipe can be communicated through the oil inlet pipe and the oil outlet pipe through the oil inlet and outlet pipe connecting pipelines, and oil vapor generated in the oil inlet pipe and the oil outlet pipe can be discharged during non-oil-discharge operation, so that pressure relief operation is performed.
The invention is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the invention.
Claims (10)
1. An exhaust apparatus of an oil discharge system, the exhaust apparatus comprising: the oil discharge system comprises an exhaust stop valve, a through sight glass, an exhaust pipeline and a reflux tank, wherein one end of the exhaust stop valve is in fluid connection with a high point of an oil inlet pipeline of the oil discharge system, and one end of the through sight glass is in fluid connection with the other end of the exhaust stop valve; the other end of direct sight glass with exhaust pipe's one end fluid connection, exhaust pipe's the other end stretches into inside the backward flow jar, exhaust pipe is close to backward flow jar department still installs the non return stop valve, the top of backward flow jar is equipped with discharge valve.
2. The vent apparatus of an oil unloading system of claim 1, wherein the feed-through mirror comprises: the cross-shaped pipeline comprises a circulation pipe and a visual pipe which are vertically connected and communicated, two ends of the circulation pipe are respectively connected with the exhaust pipeline and the exhaust stop valve, and two ends of the visual pipe are respectively provided with the glass visual mirrors.
3. The vent apparatus of an oil drain system as defined in claim 2, wherein said feed-through mirror further comprises an anti-static component mounted on said cross-shaped pipe.
4. The vent apparatus of an oil unloading system of claim 1, wherein the return tank includes a tank body and a manhole cover mounted on top of the tank body, the vent pipe extending into the tank body through the manhole cover.
5. The air vent of oil-unloading system according to claim 4, characterized in that the distance between the end of the air vent pipe extending into the return tank and the bottom of the return empty oil tank is 150mm-250 mm.
6. The exhaust apparatus of an oil unloading system according to any one of claims 1 to 5, wherein the exhaust line is a seamless steel pipe.
7. An exhaust device for an oil unloading system as claimed in any one of claims 1 to 5, wherein the exhaust valve is a fire-retardant exhaust valve.
8. An oil unloading system comprises an oil unloading loop, wherein the oil unloading loop comprises an oil inlet pipeline, an oil unloading pump and an oil outlet pipeline, and the oil inlet pipeline, the oil unloading pump and the oil outlet pipeline are sequentially connected; it is characterized in that the preparation method is characterized in that,
the oil discharge system further comprising an exhaust apparatus as claimed in any one of claims 1 to 7; and the exhaust stop valve in the exhaust device is connected with the high point of the oil inlet pipeline.
9. The oil discharge system of claim 8, wherein the high point of the oil feed line is provided with a filter, and the exhaust device is connected to the filter.
10. The oil unloading system of claim 8, further comprising an oil inlet and outlet pipe connection line, one end of the oil inlet and outlet pipe connection line being connected to the oil inlet pipe and the other end of the oil inlet and outlet pipe connection line being connected to the oil outlet pipe, the oil inlet and outlet pipe connection line having a disconnection stop valve mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810928068.4A CN110835087A (en) | 2018-08-15 | 2018-08-15 | Oil discharge system exhaust apparatus and oil discharge system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810928068.4A CN110835087A (en) | 2018-08-15 | 2018-08-15 | Oil discharge system exhaust apparatus and oil discharge system |
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| CN110835087A true CN110835087A (en) | 2020-02-25 |
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| CN201810928068.4A Pending CN110835087A (en) | 2018-08-15 | 2018-08-15 | Oil discharge system exhaust apparatus and oil discharge system |
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Application publication date: 20200225 |