A closed type oil product online blending device

Abstract

The invention belongs to the technical field of oil product blending, and specifically relates to a closed type online oil product blending device, comprising a gas / kerosene regulating and conveying pipeline, an antistatic agent regulating and conveying pipeline, an ejector and a pipeline mixer. The antistatic agent flows along the antistatic agent regulating and conveying pipeline through an antistatic agent cut-off valve, a branch cut-off valve A, a filter A, a metering pump A, an antistatic agent inlet flange and a check valve B into the connecting ejector. After mixing, the mixed liquid enters the pipeline mixer through a mixed liquid outlet of the ejector through a pipeline, and finally is led out from the discharge end of the pipeline mixer and enters the gas / kerosene delivery pipeline through an atomizing nozzle. The oil product is diluted online, and timely adjustment can be made according to the amount of the mother liquid pipeline. The solenoid valve is used to interlock the starting and stopping of the working state of the online blending and dilution device. Through interlocking control with the metering pump A, the solenoid valve is started by the pump interlocking to start the work, and the solenoid valve is stopped by the pump interlocking to stop the work, without increasing the equipment cost, saving investment and floor space.

Description

Technical Field

[0001] The invention belongs to the technical field of oil blending, and in particular relates to a closed type online oil blending device. Background Art

[0002] With the upgrading of the quality of finished gasoline / diesel, the control of sulfur content in oil products is becoming more and more stringent. Gasoline / diesel hydrofining solves the problem of sulfur content in oil products, while also removing natural polar substances in oil products, resulting in poor electrical conductivity of oil products, making it difficult to release the static charge generated by transportation friction. Static charge accumulates in large quantities, which can easily cause static electricity fires. Adding antistatic agents to light oil products and gasoline / diesel is a practical method.

[0003] The metering pump can meet the various strict process requirements of antistatic agent filling, but the filling amount of antistatic agent is about 0.8mg / L. If such a small filling amount is directly injected into the gasoline / kerosene mother liquor pipeline, it will not be fully mixed. At present, there are two ways to solve the effective mixing of antistatic agent filling:

[0004] Method 1: Draw part of the stock liquid and antistatic agent from the gasoline / kerosene mother liquid pipeline into the same storage tank in proportion, prepare the antistatic agent solution, and then pump it into the mother liquid pipeline through a metering pump; the disadvantage is that the adjustment speed is slow, and timely adjustment cannot be made according to the amount of the mother liquid pipeline. The antistatic agent solution of the same concentration in the tank can only be re-proportioned after it is pumped out;

[0005] Method 2: The raw liquid is drawn from the gasoline / kerosene mother liquid pipeline into the mother liquid storage tank, and the antistatic agent is drawn into the antistatic agent storage tank. Then, each is injected in proportion through a metering pump, mixed through a pipeline mixer and then enters the mother liquid pipeline to achieve "ready-to-use and ready-to-mix". However, the cost will increase due to the addition of a mother liquid storage tank and a metering pump. Summary of the invention

[0006] In order to solve the problems in the background technology, the present invention discloses a closed online oil blending device, which dilutes the oil online to ensure the filling accuracy, does not increase the equipment cost, and saves investment and floor space.

[0007] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0008] A closed type oil product online blending device, comprising a steam / kerosene mother liquid inlet flange, a pressure reducing valve, a solenoid valve, an oil circuit regulating valve, a flow meter, a check valve A, an ejector, a check valve B, an antistatic agent inlet flange, a pipeline mixer, an antistatic agent blending liquid outlet flange, a steam / kerosene regulating delivery pipeline and an antistatic agent regulating delivery pipeline, the ejector is provided with an oil inlet, a drug inlet and a mixed liquid outlet, a steam / kerosene mother liquid inlet flange is provided at the inlet end of the steam / kerosene regulating delivery pipeline, the steam / kerosene mother liquid inlet flange is used to be connected to the steam / kerosene delivery pipeline, and the outlet end of the steam / kerosene regulating delivery pipeline is connected to the ejector The oil inlet of the ejector is connected, and a pressure reducing valve, a solenoid valve, an oil circuit regulating valve, a flow meter and a check valve A are sequentially arranged on the gasoline / kerosene regulating and conveying pipeline along the oil conveying direction; an antistatic agent inlet flange is arranged at the inlet end of the antistatic agent regulating and conveying pipeline, and the antistatic agent inlet flange is used to be connected to the antistatic agent storage tank; the outlet end of the antistatic agent regulating and conveying pipeline is connected to the drug inlet of the ejector, and a check valve B is arranged on the antistatic agent regulating and conveying pipeline; the mixed liquid outlet of the ejector is connected to the feed end of the pipeline mixer through a pipeline, and the discharge end of the pipeline mixer is connected to the antistatic agent blending liquid outlet flange through a pipeline.

[0009] Furthermore, a pressure gauge is provided between the pressure reducing valve and the solenoid valve or between the solenoid valve and the oil circuit regulating valve.

[0010] Furthermore, the enclosed online oil blending device also includes an explosion-proof sealed box and a fixed back plate fixed in the explosion-proof sealed box, the pressure reducing valve, pressure gauge, solenoid valve, oil circuit regulating valve, flow meter, check valve A, ejector, check valve B and pipeline mixer are respectively fixed on the fixed back plate, the inlet end of the steam / kerosene regulating and conveying pipeline passes through the explosion-proof sealed box and is connected to the steam / kerosene mother liquid inlet flange, the inlet end of the antistatic agent regulating and conveying pipeline passes through the explosion-proof sealed box and is connected to the antistatic agent inlet flange, and the discharge end of the pipeline mixer is connected to the antistatic agent blending liquid outlet flange through a pipeline extending outward through the explosion-proof sealed box.

[0011] Furthermore, the enclosed online oil product blending device also includes an oil circuit cut-off valve, an antistatic agent cut-off valve, a branch cut-off valve A, a filter A, a metering pump A and a programmable controller PLC. The oil circuit cut-off valve is arranged on the connecting pipeline between the steam / kerosene mother liquid inlet flange and the steam / kerosene delivery pipeline. The antistatic agent cut-off valve, the branch cut-off valve A, the filter A and the metering pump A are arranged in sequence along the antistatic agent outlet direction on the connecting pipeline between the antistatic agent inlet flange and the antistatic agent storage tank. One end of the antistatic agent blending liquid outlet flange is connected to the discharge end of the pipeline mixer through a pipeline, and the other end is connected to the steam / kerosene delivery pipeline through a blending liquid pipeline. An atomizing nozzle is arranged at the discharge end of the blending liquid pipeline. The output ends of the pressure gauge, the flow meter and the metering pump A are respectively connected to the input end of the programmable controller PLC through lines or wireless signals, and the output end of the programmable controller PLC is respectively connected to the pressure reducing valve, the solenoid valve, the oil circuit cut-off valve, the antistatic agent cut-off valve and the branch cut-off valve A through lines or wireless signals.

[0012] Furthermore, the material of the fixed back plate is 304 stainless steel.

[0013] Furthermore, the explosion-proof sealed box is made of 304 stainless steel.

[0014] Further, the solenoid valve is a low power consumption 2-position 2-way type explosion-proof solenoid valve.

[0015] Furthermore, the flow meter is a two-wire metal rotor flow meter.

[0016] Furthermore, the oil circuit regulating valve is a manual gate valve or an intelligent electric regulating valve.

[0017] Further, the ejector is a venturi tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The enclosed online oil product blending device of the present invention comprises a gas / kerosene regulating and conveying pipeline, an antistatic agent regulating and conveying pipeline, an ejector and a pipeline mixer. The outlet end of the gas / kerosene regulating and conveying pipeline is connected to the oil inlet of the ejector. A pressure reducing valve, a solenoid valve, an oil circuit regulating valve, a flow meter and a check valve A are sequentially arranged on the gas / kerosene regulating and conveying pipeline along the oil conveying direction. The antistatic agent flows along the antistatic agent regulating and conveying pipeline through the antistatic agent cut-off valve, the branch cut-off valve A, the filter A, the metering pump A, the antistatic agent inlet flange and the check valve B into the connecting ejector. After mixing, the mixed liquid enters the pipeline mixer through the mixed liquid outlet of the ejector through the pipeline, and finally flows from the pipeline mixer to the pipeline mixer. The discharge end of the combiner is guided out through an atomizing nozzle into a gasoline / kerosene delivery pipeline. The oil is diluted online and can be adjusted in time according to the amount of the mother liquid pipeline. The solenoid valve is used to interlock the start and stop of the working state of the online blending and dilution device. Through interlock control with the metering pump A, the pump start interlock opens the solenoid valve and the pump stop interlock stops the solenoid valve. The control accuracy and flexibility can be guaranteed without increasing the equipment cost, saving investment and floor space. The components in the present invention are integrally mounted on a fixed backplane, which is convenient for overall replacement and maintenance of the equipment. The explosion-proof sealed box isolates the solenoid valve, flow meter and other live components outside the explosion-proof environment, so that the oil online blending device can adapt to outdoor work. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the installation position of the present invention;

[0022] In the above figure: 1-steam / kerosene mother liquid inlet flange; 2-pressure reducing valve; 3-pressure gauge; 4-solenoid valve; 5-oil circuit regulating valve; 6-flow meter; 7-check valve A; 8-ejector; 9-check valve B; 10-antistatic agent inlet flange; 11-pipeline mixer; 12-antistatic agent blending liquid outlet flange; 13-fixed back plate; 14-explosion-proof closed box; 15-atomizing nozzle; 16-oil circuit cut-off valve; 17-antistatic agent cut-off valve; 18-branch cut-off valve A; 19-filter A; 20-metering pump A; 21-branch cut-off valve B; 22-filter B; 23-metering pump B. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Combined with Figure 1and attached Figure 2 , a closed type online oil blending device of the present invention is described in detail, including a steam / kerosene mother liquid inlet flange 1, a pressure reducing valve 2, a solenoid valve 4, an oil circuit regulating valve 5, a flow meter 6, a check valve A7, an ejector 8, a check valve B9, an antistatic agent inlet flange 10, a pipeline mixer 11, an antistatic agent blending liquid outlet flange 12, a steam / kerosene regulating and conveying pipeline and an antistatic agent regulating and conveying pipeline, the ejector 8 is provided with an oil inlet, a drug inlet and a mixed liquid outlet, the ejector 8 provides power for the sucked antistatic agent, accelerates the mixing of the antistatic agent and the steam / kerosene in the latter half, a steam / kerosene mother liquid inlet flange 1 is provided at the inlet end of the steam / kerosene regulating and conveying pipeline, the steam / kerosene mother liquid inlet flange 1 is used to be connected to the steam / kerosene conveying pipeline, the outlet end of the steam / kerosene regulating and conveying pipeline is connected to the oil inlet of the ejector 8, and the steam / kerosene regulating and conveying pipeline is sequentially connected along the oil conveying direction. A pressure reducing valve 2, a solenoid valve 4, an oil circuit regulating valve 5, a flow meter 6 and a check valve A7 are provided. The check valve A7 and the check valve B9 are respectively used to prevent the liquid in the pipeline from flowing back. The pressure reducing valve 2 is used to adjust the pipeline inlet pressure at the inlet of the gasoline / kerosene regulating and conveying pipeline so that the outlet pressure is automatically kept stable. An antistatic agent inlet flange 10 is provided at the inlet end of the antistatic agent regulating and conveying pipeline. The antistatic agent inlet flange 10 is used to be connected to the antistatic agent storage tank. The outlet end of the antistatic agent regulating and conveying pipeline is connected to the drug inlet of the ejector 8. A check valve B9 is provided on the antistatic agent regulating and conveying pipeline. The mixed liquid outlet of the ejector 8 is connected to the feed end of the pipeline mixer 11 through a pipeline. The discharge end of the pipeline mixer 11 is connected to the antistatic agent blending liquid outlet flange 12 through a pipeline. The pipeline mixer 11 uses a spiral mechanism to fully blend the antistatic agent and gasoline / kerosene before ejection.

[0025] As an optional design, a pressure gauge 3 is preferably provided between the pressure reducing valve 2 and the solenoid valve 4 or between the solenoid valve 4 and the oil circuit regulating valve 5. The pressure gauge 3 is used to detect the working pressure of the gasoline / kerosene regulating delivery pipeline.

[0026] As an optional design, the preferred closed oil product online blending device also includes an explosion-proof sealed box 14 and a fixed back plate 13 fixed in the explosion-proof sealed box 14, a pressure reducing valve 2, a pressure gauge 3, a solenoid valve 4, an oil circuit regulating valve 5, a flow meter 6, a check valve A7, an ejector 8, a check valve B9 and a pipeline mixer 11 are respectively fixed on the fixed back plate 13, the inlet end of the steam / kerosene regulating and conveying pipeline passes through the explosion-proof sealed box 14 and is connected to the steam / kerosene mother liquid inlet flange 1, the inlet end of the antistatic agent regulating and conveying pipeline passes through the explosion-proof sealed box 14 and is connected to the antistatic agent inlet flange 10, and the pipeline mixer 11 The discharge end is connected to the antistatic agent blending liquid outlet flange 12 through a pipeline extending outward through an explosion-proof closed box 14. The explosion-proof closed box 14 is an explosion-proof closed box. All online blending and dilution components are installed on a fixed back plate 13 in the box. Solenoid valves, flow meters and other electrical equipment are connected to the outside through the explosion-proof flange of the box. The inlet and outlet agent pipelines are connected to the outside through flanges arranged on the box to adapt to the setting of the safety environment of the explosion-proof area, so that the closed oil product online blending device of the present invention can adapt to the working conditions of the outdoor explosion-proof area, and is also suitable for harsh working environments such as toxic, harmful, flammable and explosive.

[0027] As an optional design, the enclosed oil product online blending device preferably also includes an oil circuit cut-off valve 16, an antistatic agent cut-off valve 17, a branch cut-off valve A18, a filter A19, a metering pump A20, an atomizing nozzle 15 and a programmable controller PLC. The oil circuit cut-off valve 16 is arranged on the connecting pipeline between the steam / kerosene mother liquid inlet flange 1 and the steam / kerosene delivery pipeline, and the antistatic agent cut-off valve 17, the branch cut-off valve A18, the filter A19 and the metering pump A20 are arranged in sequence along the antistatic agent outlet direction on the connecting pipeline between the antistatic agent inlet flange 10 and the antistatic agent storage tank. 20, one end of the antistatic agent blending liquid outlet flange 12 is connected to the discharge end of the pipeline mixer 11 through a pipeline, and the other end is connected to the gasoline / kerosene delivery pipeline through a blending liquid pipeline. An atomizing nozzle 15 is provided at the discharge end of the blending liquid pipeline. The output ends of the pressure gauge 3, the flow meter 6, and the metering pump A20 are respectively connected to the input end of the programmable controller PLC through lines or wireless signals, and the output end of the programmable controller PLC is respectively connected to the pressure reducing valve 2, the solenoid valve 4, the oil circuit cut-off valve 16, the antistatic agent cut-off valve 17 and the branch cut-off valve A18 through lines or wireless signals.

[0028] As an optional design, the material of the fixed back plate 13 is preferably 304 stainless steel.

[0029] As an optional design, the explosion-proof sealed box 14 is preferably made of 304 stainless steel.

[0030] As an optional design, the solenoid valve 4 is preferably a low-power 2-position 2-way explosion-proof solenoid valve, which is used to interlock the start and stop of the working state of the online blending and dilution device. Through interlock control with the metering pump A20, the pump start interlock opens the solenoid valve and the pump stop interlock stops the solenoid valve, and the control accuracy and flexibility can be guaranteed.

[0031] As an optional design, the preferred flow meter 6 is a two-wire metal rotor flow meter 6, which can visualize the flow of the gasoline / kerosene mother liquor and facilitate timely proportional adjustment. The flow meter 6 is explosion-proof. In actual work, it is selected according to the explosion-hazardous area of ​​the electrical equipment to meet different explosion-proof level requirements. The on-site instantaneous / cumulative flow display can be selected, and the output signal: 4 ~ 20mA can be transmitted to the programmable controller PLC for display, which is convenient for timely grasping the current flow of the gasoline / kerosene mother liquor and providing a basis for proportional adjustment.

[0032] As an optional design, the oil circuit regulating valve 5 is preferably a manual gate valve or an intelligent electric regulating valve. The oil circuit regulating valve 5 is a manual gate valve, and the current pipeline dilution flow is manually adjusted as needed; the oil circuit regulating valve 5 is an intelligent electric regulating valve, which adjusts the pipeline flow by receiving the remote signal of the programmable controller PLC.

[0033] As an optional design, the ejector 8 is preferably a Venturi tube.

[0034] The working process of the present invention is as follows:

[0035] After the mother liquid of the steam / kerosene in the steam / kerosene regulating and conveying pipeline is discharged, it flows through the oil circuit cut-off valve 16, the mother liquid inlet flange 1 of the steam / kerosene, the pressure reducing valve 2, the pressure gauge 3, the solenoid valve 4, the oil circuit regulating valve 5, the flow meter 6, the check valve A7 in sequence along the steam / kerosene regulating and conveying pipeline and then enters the ejector 8. After the antistatic agent is discharged from the antistatic agent storage tank, it flows through the antistatic agent cut-off valve 17, the branch cut-off valve A18, the filter A19, the metering pump A20, the antistatic agent inlet flange 10 and the check valve B9 in sequence along the antistatic agent regulating and conveying pipeline and enters the connecting ejector 8. After the steam / kerosene and the antistatic agent are discharged from the mixed liquid outlet of the ejector 8, they enter the pipeline mixer 11 for mixing. The mixed blended liquid is discharged from the antistatic agent blended liquid outlet flange 12 along the blended liquid pipeline and is evenly sprayed to the steam / kerosene through the atomizing nozzle 15. In the gas / kerosene of the kerosene delivery pipeline, the electromagnetic valve 4 is interlocked with the metering pump A20 of the antistatic agent dosing system to start and stop, so as to realize automatic online control. The flow meter 6 displays the instantaneous flow of the current gas / kerosene mother liquid, and adjusts it through the oil circuit regulating valve 5 according to the working flow and blending ratio of the metering pump A20. The gas / kerosene mother liquid passes through the ejector 8 and the pipeline mixer 11, so that the gas / kerosene and the antistatic agent are blended more evenly when discharged. The pressure reducing valve 2 and the pressure gauge 3 cooperate to control the system pressure of the blending device. The check valve A7 and the check valve B9 play a role in preventing the backflow of the two media. The components are integrally installed on the fixed back plate 13, which is convenient for the overall replacement and maintenance of the equipment. The explosion-proof closed box 14 isolates the live components such as the electromagnetic valve 4 and the flow meter 6 outside the explosion-proof environment, and enables the online oil blending device to adapt to outdoor work.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A closed type oil product online blending device, characterized by: It includes a steam / kerosene mother liquid inlet flange, a pressure reducing valve, a solenoid valve, an oil circuit regulating valve, a flow meter, a check valve A, an ejector, a check valve B, an antistatic agent inlet flange, a pipeline mixer, an antistatic agent blending liquid outlet flange, a steam / kerosene regulating delivery pipeline and an antistatic agent regulating delivery pipeline. The ejector is provided with an oil inlet, a drug inlet and a mixed liquid outlet. A steam / kerosene mother liquid inlet flange is provided at the inlet end of the steam / kerosene regulating delivery pipeline. The steam / kerosene mother liquid inlet flange is used to be connected to the steam / kerosene delivery pipeline. An oil circuit cut-off valve is arranged on the connecting pipeline between the kerosene mother liquid inlet flange and the steam / kerosene delivery pipeline. The outlet end of the steam / kerosene regulating delivery pipeline is connected to the oil inlet of the ejector. A pressure reducing valve, a solenoid valve, an oil circuit regulating valve, a flow meter and a check valve A are arranged in sequence along the oil delivery direction on the steam / kerosene regulating delivery pipeline. A pressure gauge is arranged between the pressure reducing valve and the solenoid valve or between the solenoid valve and the oil circuit regulating valve. An antistatic agent inlet flange is arranged at the inlet end of the antistatic agent regulating delivery pipeline. The antistatic agent inlet flange is used for The invention is connected to the antistatic agent storage tank, and an antistatic agent cut-off valve, a branch cut-off valve A, a filter A and a metering pump A are sequentially arranged on the connecting pipeline between the antistatic agent inlet flange and the antistatic agent storage tank along the antistatic agent outlet direction. The outlet end of the antistatic agent regulating and conveying pipeline is connected to the drug inlet of the ejector, and a check valve B is arranged on the antistatic agent regulating and conveying pipeline. The mixed liquid outlet of the ejector is connected to the feed end of the pipeline mixer through a pipeline, and the discharge end of the pipeline mixer is connected to the antistatic agent blending liquid outlet flange through a pipeline. One end of the antistatic agent blending liquid outlet flange is connected to the discharge end of the pipeline mixer through a pipeline, and the other end is connected to the gasoline / kerosene delivery pipeline through a blending liquid pipeline. An atomizing nozzle is arranged at the discharge end of the blending liquid pipeline. The output ends of the pressure gauge, the flow meter and the metering pump A are respectively connected to the input end of the programmable controller PLC through lines or wireless signals, and the output end of the programmable controller PLC is respectively connected to the pressure reducing valve, the solenoid valve, the oil circuit cut-off valve, the antistatic agent cut-off valve and the branch cut-off valve A through lines or wireless signals.

2. According to claim 1, a closed type oil product online blending device is characterized by: It also includes an explosion-proof sealed box and a fixed back plate fixed in the explosion-proof sealed box, a pressure reducing valve, a pressure gauge, a solenoid valve, an oil circuit regulating valve, a flow meter, a check valve A, an ejector, a check valve B and a pipeline mixer are respectively fixed on the fixed back plate, an inlet end of a steam / kerosene regulating and conveying pipeline passes through the explosion-proof sealed box and is connected to a steam / kerosene mother liquid inlet flange, an inlet end of an antistatic agent regulating and conveying pipeline passes through the explosion-proof sealed box and is connected to an antistatic agent inlet flange, and a discharge end of the pipeline mixer is connected to an antistatic agent blending liquid outlet flange through a pipeline extending outward through the explosion-proof sealed box.

3. According to claim 2, a closed type oil product online blending device is characterized by: The material of the fixed back plate is 304 stainless steel.

4. According to claim 2, a closed type oil product online blending device is characterized by: The explosion-proof sealed box is made of 304 stainless steel.

5. The closed type online oil blending device according to claim 2 is characterized in that: The solenoid valve is a low power consumption 2-position 2-way explosion-proof solenoid valve.

6. The closed type online oil blending device according to claim 2 is characterized by: The flow meter is a two-wire metal rotor flow meter.

7. The closed type online oil blending device according to claim 2 is characterized by: The oil circuit regulating valve is a manual gate valve or an intelligent electric regulating valve.

8. The closed type online oil blending device according to claim 2 is characterized by: The ejector is a venturi tube.

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