A system for port asphalt loading and unloading and a method thereof

Abstract

The present application relates to the technical field of port asphalt loading and unloading, and discloses a port asphalt loading and unloading system, which comprises an asphalt circulation extraction loop, an asphalt fume discharge treatment loop and a nitrogen output treatment loop; the asphalt circulation extraction loop is composed of an asphalt conveying pipeline, an asphalt discharge pipeline, a plurality of disc valves and a plurality of telescopic conveying pipelines; the asphalt fume discharge treatment loop is composed of the asphalt fume discharge pipeline, a water seal well and an industrial water pool which is communicated with the water seal well through a pipeline; and the nitrogen output treatment loop is composed of a nitrogen output pipeline, a nitrogen generator and a plurality of nitrogen extension pipes. The asphalt circulation extraction loop, the asphalt fume discharge treatment loop and the nitrogen output treatment loop in the present application can solve the technical problems that asphalt fume is generated during loading and unloading of asphalt in the prior art, and there is still some asphalt left in the conveying pipeline after the asphalt is unloaded, which may be solidified and cause pipeline blockage if the remaining asphalt is not discharged in time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of port asphalt loading and unloading, and in particular to a port asphalt loading and unloading system and a method thereof. BACKGROUND

[0002] The asphalt loading and unloading pry-mounted equipment is specially used for loading and unloading asphalt in the port. The asphalt loading and unloading pry-mounted equipment is provided with a bridge-type unloading rack, a pipeline for transporting asphalt is arranged on the bridge-type unloading rack, one end (asphalt inlet end) of the pipeline is connected with the asphalt freighter through a hose, the other end (asphalt outlet) of the pipeline is arranged on the upper bridge of the unloading rack, and the pipeline of the asphalt outlet is vertically arranged downward.

[0003] During operation, the asphalt loading vehicle drives to the lower side of the bridge of the unloading rack, the pipeline of the asphalt outlet on the unloading rack is aligned with the loading warehouse of the asphalt vehicle, and then the asphalt conveying pump is started to load the asphalt on the asphalt freighter into the loading warehouse of the vehicle through the pipeline of the asphalt outlet. Since different vehicles have different heights, in the prior art, the height is adjusted by arranging two movable iron sleeve pipes at the asphalt outlet to adapt to the different heights of the vehicles. The iron sleeve pipe is usually temporarily installed by the operation workers before the loading operation starts, and is connected with the fixed pipeline of the outlet by nylon ropes in a binding manner. This structure causes the following disadvantages in the asphalt loading and unloading process:

[0004] Firstly, the connection mode of the iron sleeve pipe has poor reliability, has the risk of falling off, and has great safety hazards. Since the asphalt is in a high-temperature liquid state, a large amount of leakage will occur once the sleeve pipe falls off, which may cause personnel scalding and environmental pollution accidents; secondly, the production efficiency is low, the sleeve pipe is difficult to disassemble and assemble, and during the operation process, the outer sleeve pipe needs to be manually pulled up or lowered, the operation mode is backward, and the height adjustment is not accurate.

[0005] In order to solve the above technical problems, the patent document (publication number CN208948839U) discloses an outlet flexible device of the asphalt loading and unloading pry-mounted equipment, which comprises a flexible sleeve pipe movably sleeved on the pipeline of the asphalt outlet, a steel wire rope drum connected with the flexible sleeve pipe through a steel wire rope, the steel wire rope drum drives rotation and realizes the winding and unwinding of the steel wire rope through a speed reduction transmission device connected with the steel wire rope drum, and a guide device is arranged on the outer circle of the flexible sleeve pipe for guiding the upward and downward movement of the flexible sleeve pipe.

[0006] However, the above technical scheme still has the following technical problems: 1. In the above scheme, the asphalt will migrate to the air in the form of smoke during unloading, forming asphalt smoke with pollution effect. The asphalt smoke is discharged with the asphalt, so more asphalt smoke will be adsorbed by the body of the worker, causing greater damage to the worker's body. 2. In the above scheme, after the unloading of the asphalt is completed, there is still some asphalt remaining in the conveying pipeline. If the remaining asphalt is not discharged in time, it may solidify and cause pipeline blockage, greatly affecting the asphalt filling efficiency of the next asphalt vehicle. SUMMARY

[0007] The present application aims to provide a port asphalt loading and unloading system to solve the technical problems of asphalt smoke generated during loading and unloading in the prior art, and the remaining asphalt in the conveying pipeline after unloading, which may solidify and cause pipeline blockage if not discharged in time.

[0008] To achieve the above purpose, the present application adopts the following technical scheme: a port asphalt loading and unloading system, comprising an asphalt circulation extraction loop, an asphalt smoke discharge treatment loop and a nitrogen output treatment loop;

[0009] The asphalt circulation extraction loop is composed of an asphalt conveying pipeline, an asphalt discharge pipeline, a plurality of disc valves and a plurality of telescopic conveying pipelines. The asphalt conveying pipeline comprises an asphalt conveying main pipe in communication with an asphalt self-pumping ship. A plurality of asphalt conveying branch pipes are arranged along the axial direction of the asphalt conveying main pipe at intervals. The end of each asphalt conveying branch pipe is in communication with the input end of the corresponding disc valve. The output end of the disc valve is in communication with the corresponding telescopic conveying pipeline. The end of the telescopic conveying pipeline is provided with a spout. The spout can be in communication with the cargo compartment of the asphalt vehicle or with the asphalt discharge pipeline.

[0010] The asphalt smoke discharge treatment loop is composed of an asphalt smoke discharge pipeline, a water seal well and an industrial water pool in communication with the water seal well through a pipeline. The asphalt smoke discharge pipeline comprises an asphalt smoke main pipe in communication with the water seal well. A plurality of asphalt smoke branch pipes are arranged along the axial direction of the asphalt smoke main pipe at intervals. The end of each asphalt smoke branch pipe is a smoke exhaust port. The smoke exhaust port is located above the spout. A sealing space is formed between the smoke exhaust port and the spout and the cargo compartment of the asphalt vehicle through the installation cover.

[0011] The nitrogen output processing loop consists of a nitrogen output pipe, a nitrogen generator, and multiple nitrogen extension pipes. The nitrogen output pipe includes a main nitrogen pipe connected to the nitrogen generator. Multiple nitrogen branch pipes are arranged at intervals along the axis of the main nitrogen pipe. Each nitrogen branch pipe is connected to a nitrogen purging connector at its end. A first nitrogen gate valve is provided on the nitrogen branch pipe near the nitrogen purging connector. One end of each nitrogen extension pipe is connected to an asphalt conveying branch pipe, and a second nitrogen gate valve is provided on the other end. The input end of the second nitrogen gate valve is connected to a nitrogen hose. The input end of the nitrogen hose is connected to a nitrogen purging interface connected to the nitrogen purging connector.

[0012] The asphalt circulation extraction loop, asphalt fume discharge treatment loop, and nitrogen output treatment loop in this invention can solve the technical problems in the prior art of asphalt fumes generated during loading and unloading, and the remaining asphalt in the conveying pipeline after unloading, which may solidify and cause pipeline blockage if the remaining asphalt is not discharged in time.

[0013] In the asphalt circulation extraction loop, an asphalt delivery main pipe connected to the asphalt self-pumping vessel is used. The asphalt delivery main pipe transports the asphalt carried by the asphalt self-pumping vessel to each asphalt delivery branch pipe. The transportation is started or stopped by controlling the opening and closing of the butterfly valve, thereby realizing the overall loading and unloading of asphalt. At the same time, after the asphalt is unloaded, the spout of the telescopic delivery pipe is connected to the asphalt discharge pipe, so that the asphalt remaining in the pipeline returns to the starting position through the asphalt discharge pipe, and can be used for the next asphalt vehicle loading operation.

[0014] In the asphalt fume exhaust treatment loop, a sealed space is formed between the exhaust port and the nozzle by an installation cover and the cargo compartment of the asphalt vehicle. Therefore, when the nozzle is inserted into the cargo compartment of the asphalt vehicle to unload asphalt, the asphalt fumes generated by the asphalt will float upward and concentrate in the sealed space. They will enter the asphalt fume branch pipe through the exhaust port and then gradually gather in the asphalt fume main pipe. Since the asphalt fume main pipe is connected to the water seal well, and the water seal well is connected to the industrial water tank, the industrial water tank introduces industrial water into the water seal well. The asphalt fume main pipe also introduces the asphalt fumes into the water seal well. The asphalt fumes condense into solids after encountering water, which can then treat the asphalt fumes. This solves the technical problem that the asphalt fumes generated during asphalt unloading will be absorbed by the workers' bodies, causing significant harm to their health.

[0015] Before the nitrogen output treatment loop is treated, the first nitrogen gate valve and the second nitrogen gate valve are closed, the nitrogen blowing interface on the nitrogen hose is communicated with the nitrogen blowing joint, the nitrogen output treatment loop is communicated with the bitumen circulating extraction loop, in use, the nitrogen output by the nitrogen generator is introduced into each nitrogen branch pipe, the nitrogen branch pipe conveys the nitrogen into the bitumen conveying branch pipe through the nitrogen hose and the nitrogen extension pipe, the bitumen in the bitumen conveying branch pipe and the bitumen conveying main pipe is blown to ensure that the pipeline is not blocked; when the operator finds the nitrogen leakage during on-site loading, the first nitrogen gate valve and the second nitrogen gate valve can be used for emergency shutdown to ensure the safety of the whole loading and unloading.

[0016] Further, the bitumen smoke main pipe is provided with a suction fan between the bitumen smoke main pipe and the water seal well, the input end of the suction fan is communicated with the output end of the bitumen smoke main pipe, the end of the bitumen smoke main pipe close to the suction fan is provided with an expansion joint, the output end of the suction fan is communicated with the water seal well through a pipeline, the pipeline of the output end of the suction fan is located in the liquid surface of the water seal well, the pipeline of the output end of the industrial water pool is located in the bottom of the water seal well, and a blow-off pipe for outward blow-off is arranged on the water seal well.

[0017] The scheme mainly lies in how to treat bitumen smoke, first, industrial water is poured into the water seal well through the output end of the industrial water pool, second, in use, the bitumen smoke in the bitumen smoke main pipe is introduced into the liquid surface of the water seal well through the expansion joint by the suction fan, the bitumen smoke is condensed into solid after meeting the industrial water, and the condensed solid is discharged through the blow-off pipe.

[0018] The expansion joint is used to compensate the additional stress caused by temperature difference and mechanical vibration, to compensate the thermal elongation of the pipeline, so as to reduce the stress of the bitumen smoke main pipe and the force acting on the suction fan.

[0019] Further, the telescopic conveying pipeline comprises an output pipe, a fixed pipe and a sleeve pipe which are sequentially arranged from top to bottom, the input end of the output pipe is communicated with the output end of the butterfly valve, the output end of the output pipe is fixedly connected with the input end of the fixed pipe, the output end of the fixed pipe is sleeved with the input end of the sleeve pipe and is slidably connected with the input end of the sleeve pipe, the output end of the sleeve pipe is communicated with the insertion nozzle, the inner diameter of the sleeve pipe is consistent with the inner diameter of the output pipe, and the inner diameter of the fixed pipe is smaller than the inner diameters of the sleeve pipe and the output pipe.

[0020] The output pipe connected with the output end of the butterfly valve is convenient for conveying the bitumen into the fixed pipe, and then the bitumen is injected into the loading compartment of the bitumen vehicle through the insertion nozzle of the sleeve pipe; wherein, the inner diameters of the output pipe and the fixed pipe of the present application are consistent, so that when the sleeve pipe slides up and down along the axial direction of the fixed pipe, the top end of the sleeve pipe abuts against the bottom end of the output pipe, thereby limiting the upward moving distance of the sleeve pipe.

[0021] In addition, the inner diameter of the fixed pipe is smaller than the inner diameter of the sleeve pipe and the output pipe, when the asphalt in the output pipe enters the fixed pipe, the flow rate of the asphalt is accelerated, thus the residence time of the asphalt at the position of the butterfly valve is shortened, and the butterfly valve is prevented from being blocked due to temperature reduction at the low point; when the asphalt in the fixed pipe enters the sleeve pipe, the flow rate of the asphalt is slowed down, thus enough time is provided for the operator to observe the asphalt loading condition in the loading compartment of the asphalt vehicle.

[0022] Further, the two sides of the sleeve pipe are respectively provided with a support lug extending in the radial direction, an installation hole is formed in the end of the support lug away from the support lug, a steel wire rope is bound in the installation hole, and the end of the steel wire rope is connected with a winch arranged above the telescopic conveying pipeline.

[0023] The winch is used to pull the steel wire rope, the steel wire rope pulls the support lug, and then the sleeve pipe is pulled to move upward along the axis of the fixed pipe, so that the length of the telescopic conveying pipeline is shortened; when the length of the telescopic conveying pipeline is lengthened, the winch releases the steel wire rope, and the sleeve pipe moves downward under the gravity of the sleeve pipe, so that the length of the telescopic conveying pipeline is lengthened, and the operation is simple and convenient.

[0024] Further, the longitudinal section of the mounting cover is in the shape of a bowl, the mounting cover is sleeved on the insertion nozzle, a smoke suction hole is formed in the mounting cover, and the smoke outlet of the asphalt smoke branch pipe penetrates through the smoke suction hole and extends into the mounting cover.

[0025] The mounting cover is arranged at the loading port of the loading compartment of the asphalt vehicle, a sealed space is formed between the mounting cover and the loading port of the loading compartment of the asphalt vehicle, when the insertion nozzle injects asphalt into the loading compartment of the asphalt vehicle, asphalt smoke generated by the asphalt enters the sealed space and enters the asphalt smoke branch pipe through the smoke outlet of the asphalt smoke branch pipe, so that the asphalt smoke is discharged.

[0026] Further, a notch is formed in the lower side of the support lug for clamping the asphalt smoke branch pipe. The notch of the present application is convenient for clamping the asphalt smoke branch pipe on the support lug, and the asphalt smoke branch pipe is limited.

[0027] A method for loading and unloading asphalt in a port area, comprising the following steps:

[0028] Step one, the loading port of the loading compartment of the asphalt vehicle is connected with the insertion nozzle of the asphalt conveying branch pipe through the mounting cover, each butterfly valve is started, and the asphalt carried from the pump window is poured into the loading compartment of the asphalt vehicle through each asphalt conveying branch pipe; during the conveying of the asphalt, asphalt smoke generated by the asphalt is collected in the mounting cover, and then the asphalt smoke is conveyed into the water seal well through the asphalt smoke branch pipe arranged on the mounting cover, so that the asphalt smoke is condensed into solid and discharged when meeting water;

[0029] Step two, after the completion of step one unloading asphalt, the asphalt circulating extraction loop remaining asphalt through the asphalt discharge pipeline back to the starting position; complete the asphalt discharge, close the butterfly valve, in the asphalt circulating extraction loop pipeline emptying treatment, through the nitrogen gas hose on the nitrogen gas purge interface and nitrogen gas branch pipe on the nitrogen gas purge joint communication, so that the nitrogen gas output treatment loop and the asphalt circulating extraction loop communication; through the nitrogen gas generated by the nitrogen gas introduced into each branch pipe, nitrogen gas branch pipe through the nitrogen gas hose and nitrogen gas extension pipe to the asphalt circulating extraction loop, the asphalt circulating extraction loop in the asphalt blowing;

[0030] Step three, after the completion of step two, the asphalt circulating extraction loop blowing treatment, close the first nitrogen gas valve and the second nitrogen gas valve on the nitrogen gas extension pipe.

[0031] Compared with the prior art, the present application has the following technical effects:

[0032] The first nitrogen gas valve and the second nitrogen gas valve are used for emergency shutdown, the nitrogen gas purge interface and the nitrogen gas purge joint are communicated, the line scanning operation is carried out on the unloading pipeline, so that the connection hose between the barge and the shore is safe when it is removed, and the nitrogen gas is used to blow the asphalt ship to empty the residual material in the pipeline

[0033] When each ship is unloaded, a detailed scheduling plan is needed to avoid too long time interval between two loading trucks, so that the asphalt in the pipeline is blocked due to heat dissipation and cooling. After each ship is unloaded, nitrogen gas is used to blow the pipeline to blow the asphalt in the pipeline, so as to ensure that it is not blocked. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of the asphalt loading and unloading system in the port area of the present application;

[0035] Figure 2 It is Figure 1 It is a local enlarged view of A1 in the present application;

[0036] Figure 3 It is a structural schematic diagram of the telescopic mechanism in the asphalt loading and unloading system in the port area of the present application;

[0037] Figure 4 It is a flow chart of the asphalt loading and unloading method in the port area of the present application. DETAILED DESCRIPTION

[0038] The following will be further described in detail through specific embodiments:

[0039] The reference signs in the attached drawings of the specification include: loading yard 1, asphalt fume main pipe 2, nitrogen main pipe 3, expansion joint 4, air suction fan 5, water seal well 6, asphalt conveying main pipe 7, asphalt fume branch pipe 8, nitrogen branch pipe 9, first nitrogen gate valve 10, second nitrogen gate valve 11, asphalt conveying branch pipe 12, asphalt self-pumping boat 13, nitrogen generating machine 14, sewage pipe 15, output pipe 16, fixed pipe 17, lug 18, mounting hole 19, mounting cover 20, smoke suction hole 21, disc valve 22, industrial water pool 23, sleeve pipe 24, nitrogen extension pipe 25.

[0040] In this embodiment, referring to Figure 1 As shown in the figure, a system for loading and unloading asphalt in a port area includes a loading yard 1 on the ground and an asphalt self-pumping boat 13 in the port area, and there are an asphalt circulating extraction loop, an asphalt fume discharge treatment loop and a nitrogen output treatment loop between the loading yard 1 and the asphalt self-pumping boat 13, and a plurality of asphalt vehicles can be parked below the bridge 1.

[0041] The petroleum asphalt (about 130℃) of the asphalt self-pumping boat 13 is pumped to the loading yard 1 of the asphalt highway to load the vehicles, and the loading speed is 60t / h.

[0042] The asphalt circulating extraction loop is composed of an asphalt conveying pipeline, an asphalt discharge pipeline, a plurality of disc valves 22 and a plurality of telescopic conveying pipelines, the asphalt conveying pipeline includes an asphalt conveying main pipe 7 in communication with the asphalt self-pumping boat 13, a plurality of asphalt conveying branch pipes 12 are arranged along the axial direction of the asphalt conveying main pipe 7 at intervals, the end of each asphalt conveying branch pipe 12 is in communication with the input end of the corresponding disc valve 22, the output end of the disc valve is in communication with the corresponding telescopic conveying pipeline, and a plug is arranged at the end of the telescopic conveying pipeline, and the plug can be in communication with the loading compartment of the asphalt vehicle or the asphalt discharge pipeline.

[0043] Specifically, since the water level of the Yangtze River changes with the seasons, the position of the asphalt self-pumping boat 13 connected to the asphalt conveying pipeline in the asphalt circulating extraction loop is adjusted with the water level, a pair of flanges is arranged every 9m, and the feeding position is adjusted by detaching the metal hose. The pipeline elevation below an altitude of 175m uses a stainless steel pipeline, and the pipeline elevation above 175m uses a carbon steel pipeline and is insulated.

[0044] The asphalt conveying main pipe 7 in communication with the asphalt self-pumping boat 13 is used in the asphalt circulating extraction loop, the asphalt conveying main pipe 7 transports the asphalt carried by the asphalt self-pumping boat 13 into each asphalt conveying branch pipe 12, and the transportation is opened or closed by controlling the opening and closing of the disc valve, so as to realize the loading and unloading of the whole asphalt; at the same time, after the asphalt is unloaded, the plug of the telescopic conveying pipeline is connected to the asphalt discharge pipeline, so that the remaining asphalt in the pipeline returns to the starting position through the asphalt discharge pipeline, and the next loading work of the asphalt vehicle can be carried out.

[0045] Specifically, referring toFigure 3 As shown, the telescopic conveying pipeline comprises the output pipe 16, the fixed pipe 17 and the sleeve pipe 24 arranged in sequence from top to bottom, the input end of the output pipe 16 is communicated with the output end of the butterfly valve, the output end of the output pipe 16 is fixedly connected with the input end of the fixed pipe 17, the output end of the fixed pipe 17 is sleeved with the input end of the sleeve pipe 24 and is slidably connected with each other, the output end of the sleeve pipe 24 is communicated with the insertion nozzle, the inner diameter of the sleeve pipe 24 is consistent with the inner diameter of the output pipe 16, and the inner diameter of the fixed pipe 17 is smaller than the inner diameters of the sleeve pipe 24 and the output pipe 16.

[0046] The output pipe 16 connected with the output end of the butterfly valve of the present application is convenient for conveying the asphalt into the fixed pipe 17, and then the asphalt is injected into the loading compartment of the asphalt vehicle through the insertion nozzle of the sleeve pipe 24 through the fixed pipe 17; wherein the inner diameters of the output pipe 16 and the fixed pipe 17 of the present application are consistent, so that when the sleeve pipe 24 slides up and down along the axial direction of the fixed pipe 17, the top end of the sleeve pipe 24 abuts against the bottom end of the output pipe 16, so as to limit the distance of the upward movement of the sleeve pipe 24.

[0047] In addition, the inner diameter of the fixed pipe 17 is smaller than the inner diameters of the sleeve pipe 24 and the output pipe 16, when the asphalt in the output pipe 16 enters the fixed pipe 17, the flow rate of the asphalt is accelerated, so as to shorten the residence time of the asphalt at the position of the butterfly valve, and avoid the blockage of the butterfly valve caused by the temperature reduction of the asphalt at the low point; when the asphalt in the fixed pipe 17 enters the sleeve pipe 24, the flow rate of the asphalt is slowed down, so as to give the operator enough time to observe the asphalt loading condition in the loading compartment of the asphalt vehicle.

[0048] As a preferred, the two sides of the sleeve pipe 24 are respectively provided with the ears 18 extending in the radial direction, the mounting holes 19 are formed on the end portions of the ears 18 away from each other, the steel wire ropes are bound in the mounting holes 19, and the ends of the steel wire ropes are connected with the winch arranged above the telescopic conveying pipeline.

[0049] The present application adopts the winch mode to pull the steel wire ropes, the steel wire ropes pull the ears 18, and then the sleeve pipe 24 is pulled to move upward along the axial direction of the fixed pipe 17, so as to shorten the length of the telescopic conveying pipeline; when the length of the telescopic conveying pipeline is lengthened, the steel wire ropes are released through the winch, the sleeve pipe 24 moves downward under the gravity of itself, so as to lengthen the length of the telescopic conveying pipeline, and the operation is simple and convenient.

[0050] As a preferred, the longitudinal section of the mounting cover 20 is in the shape of a bowl, the mounting cover 20 is sleeved on the insertion nozzle, the smoke suction holes 21 are formed on the mounting cover 20, and the smoke exhaust ports of the asphalt smoke branch pipe 8 penetrate through the smoke suction holes 21 and extend into the mounting cover 20.

[0051] The present application forms a sealed space between the installation cover 20 and the loading compartment inlet of the asphalt vehicle, when the nozzle injects asphalt into the loading compartment of the asphalt vehicle, the asphalt fume generated by the asphalt enters the sealed space and enters the asphalt fume branch pipe 8 through the smoke outlet of the asphalt fume branch pipe 8, so that the asphalt fume is discharged.

[0052] As preferred, the lower side of the lug 18 is provided with a notch for clamping the asphalt fume branch pipe 8. The notch of the present application is convenient for clamping the asphalt fume branch pipe 8 on the lug 18, and limiting the asphalt fume branch pipe 8.

[0053] Secondly, referring to Figure 1 , Figure 2 and Figure 4 , the asphalt fume discharge treatment loop is composed of an asphalt fume discharge pipeline, a water seal well 6 and an industrial water pool 23 connected with the water seal well 6 through a pipeline. The asphalt fume discharge pipeline includes an asphalt fume main pipe 2 connected with the water seal well 6, and a plurality of asphalt fume branch pipes 8 arranged at intervals along the axial direction of the asphalt fume main pipe 2. The end of each asphalt fume branch pipe 8 is a smoke outlet, which is located above the nozzle. A sealed space is formed between the smoke outlet and the nozzle by the installation cover 20 and the loading compartment of the asphalt vehicle.

[0054] In the asphalt fume discharge treatment loop, a sealed space is formed between the smoke outlet and the nozzle by the installation cover 20 and the loading compartment of the asphalt vehicle. Therefore, when the nozzle is inserted into the loading compartment of the asphalt vehicle to unload the asphalt, the asphalt fume generated by the asphalt will float upward and concentrate in the sealed space, enter the asphalt fume branch pipe 8 through the smoke outlet, and then gradually gather in the asphalt fume main pipe 2. Since the asphalt fume main pipe 2 is connected with the water seal well 6, and the water seal well 6 is connected with the industrial water pool 23, the industrial water pool 23 introduces industrial water into the water seal well 6, and the asphalt fume main pipe 2 also introduces asphalt fume into the water seal well 6. The asphalt fume will condense into solid after encountering water, thereby solving the technical problem that the asphalt fume generated during unloading will be adsorbed by the body of the worker, causing greater damage to the worker's body.

[0055] As preferred, an air suction fan 5 is arranged between the asphalt fume main pipe 2 and the water seal well 6. The input end of the air suction fan 5 is connected with the output end of the asphalt fume main pipe 2. An expansion joint 4 is arranged on the end of the asphalt fume main pipe 2 close to the air suction fan 5. The output end of the air suction fan 5 is connected with the water seal well 6 through a pipeline. The pipeline of the output end of the air suction fan 5 is located in the liquid surface of the water seal well 6. The pipeline of the output end of the industrial water pool 23 is located in the bottom of the water seal well 6. A sewage discharge pipe 15 is arranged on the water seal well 6 to discharge sewage outward.

[0056] The scheme mainly lies in how to deal with asphalt fume. First, industrial water is poured into the water sealed well 6 through the output end of the industrial water pool 23. Second, when in use, the asphalt fume in the asphalt fume main pipe 2 is introduced into the liquid surface of the water sealed well 6 through the expansion joint 4 by the air suction fan 5. The asphalt fume is condensed into solid after meeting the industrial water, and the condensed solid is discharged through the blowdown pipe 15.

[0057] The expansion joint 4 is used to compensate the additional stress caused by temperature difference and mechanical vibration, to compensate the thermal elongation of the pipeline, so as to reduce the stress of the asphalt fume main pipe 2 and the force acting on the air suction fan 5.

[0058] As shown in Figure 4 As shown in the drawings, the nitrogen output treatment loop is composed of the nitrogen output pipe 16, the nitrogen generator 14 and the plurality of nitrogen extension pipes 25. The nitrogen output pipe 16 includes the nitrogen main pipe 3 in communication with the nitrogen generator 14. A plurality of nitrogen branch pipes 9 are arranged along the axial direction of the nitrogen main pipe 3 at intervals. The end of each nitrogen branch pipe 9 is connected with a nitrogen purge connector. A first nitrogen gate valve 10 is arranged on the nitrogen branch pipe 9 close to the nitrogen purge connector. One end of each nitrogen extension pipe 25 is in communication with the asphalt conveying branch pipe 12, and the other end is provided with a second nitrogen gate valve 11. The input end of the second nitrogen gate valve 11 is in communication with a nitrogen hose. The input end of the nitrogen hose is connected with a nitrogen purge interface in communication with the nitrogen purge connector.

[0059] Before the nitrogen output treatment loop is treated, the first nitrogen gate valve 10 and the second nitrogen gate valve 11 are closed, the nitrogen purge interface on the nitrogen hose is connected with the nitrogen purge connector, so that the nitrogen output treatment loop is in communication with the asphalt circulation extraction loop. In use, the nitrogen output by the nitrogen generator 14 is introduced into each nitrogen branch pipe 9. The nitrogen branch pipe 9 conveys the nitrogen to the asphalt conveying branch pipe 12 through the nitrogen hose and the nitrogen extension pipe 25, so as to purge the asphalt in the asphalt conveying branch pipe 12 and the asphalt conveying main pipe 7, to ensure that the pipeline is not blocked. When the operator finds nitrogen leakage during loading on site, the first nitrogen gate valve 10 and the second nitrogen gate valve 11 can be used for emergency shutdown, to ensure the safety of the whole loading and unloading.

[0060] A method for loading and unloading asphalt in a port area, comprising the following steps:

[0061] Step one, the loading port of the cargo compartment of the asphalt vehicle is connected with the spout of the asphalt conveying branch pipe 12 through the mounting cover 20. Each butterfly valve is started. The asphalt carried by the pump window is poured into the cargo compartment of the asphalt vehicle through each asphalt conveying branch pipe 12. During the conveying of the asphalt, the asphalt fume generated by the asphalt is collected in the mounting cover 20, and then conveyed to the water sealed well 6 through the asphalt fume branch pipe 8 arranged on the mounting cover 20, so that the asphalt fume is condensed into solid after meeting water and discharged.

[0062] Step two, after the completion of step one, unload the asphalt, the asphalt circulating extraction loop remaining asphalt through the asphalt discharge pipeline back to the starting position; complete the asphalt discharge, close the butterfly valve, pipeline emptying treatment in the asphalt circulating extraction loop, through the nitrogen gas hose on the nitrogen gas purge interface and nitrogen gas branch pipe 9 on the nitrogen gas purge joint communication, so that the nitrogen gas output processing loop and asphalt circulating extraction loop communication; through the nitrogen gas generating machine 14 output of nitrogen gas is introduced into each nitrogen gas branch pipe 9, nitrogen gas branch pipe 9 will be nitrogen gas through the nitrogen gas hose and nitrogen gas extension pipe 25 is transported to the asphalt circulating extraction loop, the asphalt circulating extraction loop in the asphalt blowing;

[0063] Step three, after the completion of step two, the asphalt circulating extraction loop blowing treatment, close the first nitrogen gas shutoff valve 10 on the nitrogen gas branch pipe 9 and the second nitrogen gas shutoff valve 11 on the nitrogen gas extension pipe 25.

[0064] The above is only the embodiment of the present application, the specific technical solutions and / or characteristics of the scheme known in the art are not described here. It should be noted that for those skilled in the art, without departing from the technical scheme of the present application, a number of deformation and improvement can also be made, which should be considered as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope of the present application should be subject to the content of its claims, the specific implementation mode and other records in the specification can be used to explain the content of the claims.

Claims

1. A port area asphalt loading and unloading system, characterized in that, This includes an asphalt circulation extraction loop, an asphalt fume emission treatment loop, and a nitrogen output treatment loop; The asphalt circulation extraction loop consists of an asphalt conveying pipeline, an asphalt discharge pipeline, multiple butterfly valves, and multiple telescopic conveying pipelines. The asphalt conveying pipeline includes a main asphalt conveying pipe connected to the asphalt self-pumping vessel. Multiple asphalt conveying branch pipes are arranged at intervals along the axis of the main asphalt conveying pipe. The end of each asphalt conveying branch pipe is connected to the input end of a corresponding butterfly valve. The output end of the butterfly valve is connected to the corresponding telescopic conveying pipeline. The end of the telescopic conveying pipeline is provided with a spout, which can be connected to the cargo compartment of the asphalt vehicle or to the asphalt discharge pipeline. The asphalt fume discharge treatment loop consists of an asphalt fume discharge pipe, a water seal well, and an industrial water tank connected to the water seal well via a pipe. The asphalt fume discharge pipe includes a main asphalt fume pipe connected to the water seal well. Multiple asphalt fume branch pipes are arranged at intervals along the axis of the main asphalt fume pipe. The end of each asphalt fume branch pipe is a smoke exhaust port. The smoke exhaust port is located above the nozzle. A sealed space is formed between the smoke exhaust port and the nozzle and the cargo compartment of the asphalt vehicle through an installation cover. The nitrogen output processing loop consists of a nitrogen output pipeline, a nitrogen generator, and multiple nitrogen extension pipes. The nitrogen output pipeline includes a main nitrogen pipe connected to the nitrogen generator. Multiple nitrogen branch pipes are arranged at intervals along the axis of the main nitrogen pipe. Each nitrogen branch pipe is connected to a nitrogen purging connector at its end. A first nitrogen gate valve is provided on the nitrogen branch pipe near the nitrogen purging connector. One end of each nitrogen extension pipe is connected to an asphalt conveying branch pipe, and a second nitrogen gate valve is provided on the other end. The input end of the second nitrogen gate valve is connected to a nitrogen hose. The input end of the nitrogen hose is connected to a nitrogen purging interface connected to the nitrogen purging connector. A suction fan is installed between the main asphalt fume pipe and the water seal well. The input end of the suction fan is connected to the output end of the main asphalt fume pipe. An expansion joint is installed on the end of the main asphalt fume pipe near the suction fan. The output end of the suction fan is connected to the water seal well through a pipe. The pipe at the output end of the suction fan is located within the liquid surface of the water seal well. The pipe at the output end of the industrial water tank is located inside the bottom of the water seal well. The asphalt fume condenses into a solid upon contact with industrial water. A sewage discharge pipe is installed on the water seal well to discharge sewage outwards.

2. The asphalt loading and unloading system for port areas according to claim 1, characterized in that: The telescopic conveying pipeline includes an output pipe, a fixed pipe, and a sleeve arranged sequentially from top to bottom. The input end of the output pipe is connected to the output end of the butterfly valve. The output end of the output pipe is fixedly connected to the input end of the fixed pipe. The output end of the fixed pipe is sleeved with the input end of the sleeve and slidably connected to each other. The output end of the sleeve is connected to the nozzle. The inner diameter of the sleeve is the same as the inner diameter of the output pipe. The inner diameter of the fixed pipe is smaller than the inner diameters of the sleeve and the output pipe.

3. A port area asphalt loading and unloading system according to claim 2, characterized in that: The sleeve is provided with lugs extending radially on both sides. The end of the lug away from the lug is provided with a mounting hole. A steel wire rope is bound in the mounting hole. The end of the steel wire rope is connected to a winch located above the telescopic conveying pipe.

4. A port area asphalt loading and unloading system according to claim 1, characterized in that: The longitudinal section of the mounting cover is bowl-shaped. The mounting cover is fitted onto the nozzle. The mounting cover has a smoke extraction hole. The exhaust port of the asphalt smoke branch pipe passes through the smoke extraction hole and extends into the mounting cover.

5. A port area asphalt loading and unloading system according to claim 3, characterized in that: The lower side of the support lug has a slot for clamping the asphalt fume branch pipe.

6. A method for loading and unloading asphalt in a port area, used in the asphalt loading and unloading system for a port area according to any one of claims 1-5, characterized in that: Includes the following steps: Step 1: Connect the inlet of the asphalt truck's cargo compartment to the inlet of the asphalt delivery branch pipe through the installation cover. Start each butterfly valve to pump the asphalt from the pump window into the cargo compartment of the asphalt truck through each asphalt delivery branch pipe. During the asphalt transportation process, the asphalt fumes generated by the asphalt will collect in the installation cover and then be transported to the water seal well through the asphalt fume branch pipe set on the installation cover. This will cause the asphalt fumes to condense into solids upon contact with water and be discharged. Step 2: After the asphalt is unloaded in Step 1, the remaining asphalt in the asphalt circulation extraction loop is returned to the starting position through the asphalt discharge pipe. After asphalt discharge is completed, all butterfly valves are closed, and the pipeline in the asphalt circulation extraction loop is emptied. The nitrogen purging interface on the nitrogen hose is connected to the nitrogen purging connector on the nitrogen branch pipe, so that the nitrogen output processing loop is connected to the asphalt circulation extraction loop. Nitrogen output from the nitrogen generator is introduced into each nitrogen branch pipe, and the nitrogen branch pipe delivers nitrogen through the nitrogen hose and nitrogen extension pipe to the asphalt circulation extraction loop to purge the asphalt in the asphalt circulation extraction loop. Step 3: After the asphalt circulation extraction loop is purged in Step 2, close the first nitrogen gate valve on the nitrogen branch pipe and the second nitrogen gate valve on the nitrogen extension pipe.

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