Grease nitrogen dissolving mechanism and oil pipeline

Abstract

The utility model belongs to the technical field of gas and liquid mixing devices. The grease nitrogen dissolving mechanism comprises a gas inlet pipeline used for providing nitrogen; the gas outlet assembly is arranged at the gas outlet end of the gas inlet pipeline and used for discharging the nitrogen conveyed by the gas inlet pipeline into grease of the oil conveying pipeline. And the oil pipeline is internally provided with the grease nitrogen dissolving mechanism. The utility model solves the technical problems of high power consumption and high cost caused by forced mixing of grease and nitrogen when a gas dissolving pump is mounted on the existing oil pipeline.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas and liquid mixing devices, and in particular relates to a grease nitrogen dissolving mechanism and an oil pipeline using the grease nitrogen dissolving mechanism. Background Art

[0002] my country is the country with the largest consumption of oil and fat in the world. The production process of oil and fat was initially introduced from foreign manufacturers. After absorbing and innovating on this basis, it can now basically be replaced domestically. The improvement and iteration of the oil and fat production process has increasingly higher requirements for energy saving such as gas consumption and power consumption. The quality requirements of oil products must also meet the various oil and fat uses in various industries downstream. Oil and fat are organic compounds. If they are exposed to the air for a long time, they will be oxidized by the oxygen in the air, which will lead to oxidation and rancidity of the oil and fat, produce an uncomfortable odor, and reduce the oil quality. At present, oil and fat factories mainly use large oil tanks for storage. In order to reduce the oxidation of oil and fat, nitrogen is filled in the upper part of the oil tank to replace the air, so as to achieve the purpose of isolating oxygen. In order to minimize the contact between oil and oxygen, a nitrogen filling device is pre-set on the pipeline from the refining workshop to the storage tank to allow the oil and nitrogen to be fully mixed. There is always a layer of nitrogen on the interface of the oil for protection; at the same time, the oxygen content in the oil is reduced accordingly due to the filling of nitrogen, which provides double protection for the oil and fat. It can extend the storage time of oil and fat and keep the quality of refined oil from decreasing.

[0003] The oxygen concentration in the oil storage container and the oil is linearly correlated with the oxidation rate of the oil. The use of inert gas protection measures to control the oxygen concentration of the oil in the oil tank at 1% to 2% can reduce the oxidation of the oil to a relatively weak level. The gas-controlled nitrogen storage technology is to fill nitrogen into the oil tank to discharge the oxygen contained in the storage tank and the oil, thereby achieving the effect of inhibiting the oxidation of the oil and ensuring the long-term storage of the oil.

[0004] There is a certain distance between the oil refining production workshop and the oil storage tank. When the oil is transported through a pipeline, there will be air in the pipeline. Moreover, the oil has just been pumped into the oil tank and the air in the tank has not been replaced yet. Therefore, the oil still has the opportunity to contact a large amount of air. Therefore, nitrogen is pre-filled in the pipeline leading to the oil storage tank for mixing. The nitrogen is isolated from the air at the location where the mixed oil flows, which can protect the oil from oxidation to the maximum extent. Some processes are equipped with an air dissolving pump on the pipeline to force the oil and nitrogen to mix; it consumes power and the investment cost also increases accordingly. Utility Model Content

[0005] The first purpose of the utility model is to provide a grease nitrogen dissolving mechanism, which solves the technical problems of installing an air dissolving pump on the existing oil pipeline, forcing the grease and nitrogen to mix, consuming large power and high cost.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme, the grease nitrogen dissolving mechanism is characterized in that it includes:

[0007] an air intake pipe for supplying nitrogen;

[0008] The air outlet component is arranged at the air outlet end of the air inlet pipeline and is used to discharge the nitrogen transported by the air inlet pipeline into the grease in the oil pipeline.

[0009] The utility model has a simple structure for the grease-dissolving nitrogen mechanism, does not require power consumption, and reduces investment and operating costs; pipeline nitrogen is sprayed out from the vent holes of the gas outlet component under a certain pressure, has a small diameter and a large number, and sprays a dense airflow in the grease, intensifies the flow of the fluid, and has a good mixing effect of nitrogen and grease.

[0010] In order to solve the technical problem of how to realize the air outlet component, the utility model adopts the following technical solution, and the air outlet component includes:

[0011] An air distribution cone is arranged at the air outlet end of the air inlet pipe, and first air holes are evenly distributed on the air distribution cone;

[0012] The gas distribution plate is arranged at the gas outlet end of the gas distribution cone, and the second vent holes are evenly distributed on the gas distribution plate.

[0013] In order to solve the technical problem of how to realize the air intake pipeline, the utility model adopts the following technical solution. The air intake pipeline includes an air intake main pipe and an air intake elbow arranged at the air outlet end of the air intake main pipe.

[0014] In order to solve the technical problem that the impact of the fluid on the air separation cone causes the air intake pipe to vibrate and make abnormal noise, the utility model adopts the following technical solution: reinforcing ribs are arranged on the air intake pipe to prevent the impact of the fluid on the air separation cone from causing the air intake pipe to vibrate and make abnormal noise. The utility model welds reinforcing ribs on the air intake pipe, and the reinforcing ribs are arranged along the length direction of the air intake pipe to prevent the impact of the fluid on the air separation cone from causing the air intake pipe to vibrate and make abnormal noise.

[0015] In order to solve the technical problem that the coaxial arrangement of the gas distribution cone and the intake pipe leads to unsatisfactory nitrogen filling effect, the utility model adopts the following technical solution: the central axis of the gas distribution cone is arranged perpendicularly to the central axis of the intake pipe, so that the grease nitrogen dissolving mechanism is installed at the center of the oil pipeline, and the nitrogen distribution in the cross section of the oil pipeline is uniform.

[0016] In order to solve the technical problem of inconvenient discharge of liquid in the gas separation plate, the utility model adopts the following technical solution: self-cleaning half holes are evenly arranged on the circumferential edge of the gas separation plate to discharge the liquid in the gas separation plate. The edge of the gas separation plate is provided with self-cleaning small holes, and the liquid in the internal corners can be sprayed out through the holes without residue.

[0017] In order to solve the technical problem of inconvenient assembly and disassembly of the gas distribution cone and the gas distribution plate, the utility model adopts the following technical solution: the gas distribution plate is threadedly connected to the gas distribution cone.

[0018] In order to further solve the technical problem of inconvenient assembly and disassembly of the air distribution cone and the air distribution plate, the utility model adopts the following technical solution, wherein the air distribution cone and the air distribution plate are connected by a screw-tightening pipe assembly.

[0019] In order to solve the technical problem of inconvenient cleaning inside the gas outlet assembly, the utility model adopts the following technical solution: the tightening pipe assembly includes a matching inner cone threaded pipe and an outer cone threaded pipe, and the inner cone threaded pipe and the outer cone threaded pipe are correspondingly arranged on the gas distribution cone or the gas distribution plate. The gas distribution cone and the gas distribution plate are connected by a tapered thread, which can be easily disassembled for internal cleaning.

[0020] In order to solve the technical problem of inconvenient assembly and disassembly of the gas distribution plate and the gas distribution cone, the utility model adopts the following technical solution: a handle is provided on the gas distribution plate for tightening or loosening the gas distribution plate on the gas distribution cone. The utility model can separate the gas distribution plate and the gas distribution cone through the handle on the gas distribution plate, which is convenient for cleaning internal blockages.

[0021] In order to solve the technical problem that the nitrogen content in the grease is insufficient and oxidized due to the number of vent holes, the utility model adopts the following technical solution: the first vent holes are arranged in a plurality of concentric circles along the central axis of the air dividing cone;

[0022] The second vent holes are arranged in a concentric circle with the center of the gas distribution plate as the center;

[0023] The diameters of the first vent hole and the second vent hole are both 0.5-1 mm, and the total ventilation area of ​​the first vent hole and the second vent hole is equal to the cross-sectional area of ​​the air intake pipe. The utility model adopts the first and second vent holes arranged in concentric circles, which can achieve better mixing and nitrogen dissolving effects.

[0024] The second object of the utility model is to provide an oil pipeline, in which any of the above-mentioned grease nitrogen dissolving mechanisms is arranged.

[0025] In order to solve the technical problem of how to fix the grease nitrogen dissolving mechanism on the oil pipeline, the utility model adopts the following technical solution: a mounting pipe is vertically arranged on the oil pipeline, a matching flange and a flange cover are arranged on the mounting pipe, and the air intake pipe of the grease nitrogen dissolving mechanism is arranged on the flange cover. The utility model welds the air intake pipe to the flange cover, and the flange cover and the flange are fixed by fasteners, which can be removed during factory maintenance.

[0026] In order to solve the technical problem of unsatisfactory mixing effect of nitrogen and grease, the utility model adopts the following technical solution: the air intake pipe of the grease dissolving nitrogen mechanism is eccentrically arranged on the flange cover; the air intake pipe is arranged vertically to the flange cover. The air intake pipe of the utility model is arranged at the eccentric position of the flange cover, and the flow cross section is enlarged at the welding position of the oil pipeline and the installation pipe, and the air flow sprayed from the small hole is fully combined with the grease at this place, and the mixing effect is good.

[0027] In order to solve the technical problem of uneven nitrogen distribution in the cross section of the oil pipeline, the utility model adopts the following technical solution: the central axis of the gas distribution cone of the grease nitrogen dissolving mechanism is coaxially arranged with the central axis of the horizontal pipe of the mounting pipe, thereby ensuring uniform nitrogen distribution in the cross section of the oil pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the grease nitrogen dissolving mechanism of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the gas distribution plate of the grease nitrogen dissolving mechanism of the utility model;

[0030] Figure 3 It is a structural schematic diagram of the gas distribution cone of the grease nitrogen dissolving mechanism of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the oil pipeline of the utility model;

[0032] In the figure: 10 grease nitrogen dissolving mechanism;

[0033] 100 air intake pipe; 101 air intake main pipe; 102 air intake elbow; 103 reinforcing rib;

[0034] 200 air cone; 201 first vent hole;

[0035] 300 air plate; 301 second air hole; 302 self-cleaning half hole; 303 handle;

[0036] 400 screw-on pipe assembly; 401 external cone threaded pipe; 420 internal cone threaded pipe;

[0037] 500 oil pipeline; 501 first flange;

[0038] 600: mounting pipe; 601: second flange; 602: flange cover. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] Example 1

[0041] like Figure 1-3As shown, the grease nitrogen dissolving mechanism 10 includes an air inlet pipe 100 and an air outlet component.

[0042] The air intake pipe 100 is used to provide nitrogen. In one embodiment, the air intake pipe 100 includes an air intake main pipe 101. In one embodiment, an air intake elbow 102 is installed at the outlet end of the air intake main pipe 101. The air intake elbow is a 90° elbow.

[0043] In one embodiment, in order to prevent the impact of the fluid on the air distribution cone from causing vibration and abnormal noise in the air intake pipe, a reinforcing rib 103 is welded on the air intake pipe 101 .

[0044] The gas outlet assembly is used to discharge the nitrogen delivered by the air inlet pipeline into the grease in the oil pipeline. The gas outlet assembly is installed at the gas outlet end of the air inlet pipeline. Specifically, the gas outlet assembly is installed at the gas outlet end of the air inlet elbow 102.

[0045] In one embodiment, the gas outlet assembly includes a gas distribution cone 200 and a gas distribution plate 300 .

[0046] The air distribution cone 200 is installed at the air outlet end of the air inlet pipe 100. Specifically, the first air holes 201 are evenly distributed on the air distribution cone 200. The diameter of the first air holes 201 is 0.5-1 mm, and the total ventilation area of ​​the first air holes 201 is equal to the inner cross-sectional area of ​​the air inlet pipe 100. The utility model uses first air holes with a diameter of 0.5 mm, and after debugging tests, it can achieve better mixing and nitrogen dissolving effects. Specifically, N circles of concentric circles of first air holes are set as needed on the air distribution cone 200, the concentric circles are equally spaced, and the small holes on each concentric circle are evenly distributed. In one embodiment, the first air holes are arranged in several layers of concentric circles along the central axis of the air distribution cone.

[0047] In one embodiment, the central axis of the air dividing cone 200 is arranged perpendicular to the central axis of the air intake main pipe 101 .

[0048] The gas distribution plate 300 is installed at the outlet end of the gas distribution cone 200, and the gas distribution plate 300 is processed with second ventilation holes 301. Specifically, the second ventilation holes 301 are evenly distributed on the gas distribution plate 300. The second ventilation holes 301 are arranged in concentric circles with the center of the gas distribution plate as the center. The utility model sets the gas distribution cone 200 and the gas distribution plate 300 at the nitrogen distribution position, and drills ventilation holes with a diameter of 0.5 to 1 mm thereon, and the total number is converted according to the ventilation area and the cross-sectional area inside the intake pipe. The gas distribution plate 300 is provided with N circles of concentric circles of second ventilation holes 301 as needed, and the concentric circles are equally spaced, and the second ventilation holes 301 are evenly distributed on each concentric circle.

[0049] In one embodiment, in order to discharge the liquid in the gas separation cone, self-cleaning half holes 302 are evenly arranged on the circumferential edge of the gas separation disk 300. The utility model arranges self-cleaning holes 302 on the edge of the gas separation disk. The self-cleaning holes 302 are preferably 8 semicircular holes with a radius of 0.5 mm, and the 8 semicircular holes are evenly distributed on the edge of the gas separation disk. The self-cleaning holes 302 can facilitate the discharge of liquid inside the cone of the gas separation cone, and have a self-cleaning function.

[0050] In one embodiment, in order to facilitate the disassembly and assembly of the gas distribution plate, the gas distribution plate 300 is threadedly connected to the gas distribution cone 200. Specifically, in one embodiment, the gas distribution cone 200 and the gas distribution plate 300 are connected by a tightening tube assembly 400. Specifically, the tightening tube assembly 400 includes a matching inner cone threaded tube 402 and an outer cone threaded tube 401, and the inner cone threaded tube 402 and the outer cone threaded tube 402 are correspondingly arranged on the gas distribution cone 200 or the gas distribution plate 300. When the outer threaded tube 401 is welded to the gas distribution cone 200, the inner threaded tube 402 is welded to the gas distribution plate 300. When the outer threaded tube 401 is welded to the gas distribution plate 300, the inner threaded tube 402 is welded to the gas distribution cone 200. The outer cone threaded tube 401 is welded to the gas distribution cone 200, and the outer cone thread is processed; the inner cone threaded tube 402 is welded to the part number 10, and the inner cone thread is processed. The outer tapered threaded tube 401 and the inner tapered threaded tube 402 are matched by tapered threads.

[0051] The screw-on tube assembly 400 includes two short tubes: the utility model is advantageous in that the gas distribution cone and the gas distribution plate are connected via the screw-on tube assembly 400, and the screw-on tube assembly 400 is connected via a tapered thread.

[0052] In one embodiment, in order to facilitate the disassembly and assembly of the gas distribution plate, a handle 303 is provided on the gas distribution plate 300 for tightening or loosening the gas distribution plate on the gas distribution cone. Specifically, a handle 303 is welded at the center position of the outer side of the gas distribution plate 300, and the handle 303 can be realized by welding square steel on the gas distribution plate, and the square steel can be used to disassemble and assemble the gas distribution plate.

[0053] Example 2

[0054] like Figure 4 As shown, the utility model sets two first flanges 501 at both ends of the oil pipeline 500 to facilitate installation with the oil pipeline. The oil pipeline 500 is set with any grease nitrogen dissolving mechanism 10 of embodiment 1.

[0055] In one embodiment, a mounting pipe 600 is vertically arranged on the oil pipeline 500, and a matching second flange 601 and a flange cover 602 are arranged on the mounting pipe 600. The air intake pipe 100 of the grease nitrogen dissolving mechanism 10 is welded to the flange cover 602. The utility model welds the air intake pipe to the flange cover, and the flange cover and the flange are fixed by fasteners, which can be removed during factory maintenance.

[0056] In one embodiment, in order to improve the mixing effect of nitrogen and grease, the air intake pipe 100 of the grease dissolving nitrogen mechanism 10 is eccentrically arranged on the flange cover 602. Preferably, the air intake pipe 100 is arranged vertically to the flange cover 602. The air intake pipe of the utility model is arranged at an eccentric position of the flange cover 602, and the flow cross section is enlarged at the welding position of the oil pipeline and the installation pipe, and the air flow ejected from the small hole is fully combined with the grease at this place, and the mixing effect is good.

[0057] In one embodiment, the central axis of the gas distribution cone 200 of the grease nitrogen dissolving mechanism 10 is coaxially arranged with the central axis of the oil pipeline 500. The utility model installs the grease nitrogen dissolving mechanism 100 at the center of the oil pipeline 500, and the nitrogen in the cross section of the oil pipeline 500 is evenly distributed.

[0058] Working process of the grease nitrogen dissolving mechanism in the oil pipeline:

[0059] Vegetable oil is degummed, deacidified, decolorized, deodorized and other processes in the oil refining workshop to obtain qualified oil products. Under high temperature and low pressure, the oxygen content in the oil is very low. In order to maintain this low oxygen state, nitrogen is added in advance to the pipeline of the oil leaving the refining workshop for protection to reduce the degree of oxidation and rancidity of the oil;

[0060] Vegetable oil enters from the first flange 501 of the oil pipeline 500 and flows out from the flange at the other end; nitrogen enters the interior through the air intake pipe 100 under a certain pressure, and reaches the gas distribution cone 200 and the gas distribution plate 300 for distribution. The vegetable oil flows through the gas distribution cone 200 to mix with the nitrogen, and the cone cross section changes from small to large, which changes the flow direction of the fluid and intensifies the turbulence of the fluid; a certain number of second vents 301 are set on the surface of the gas distribution plate 300, and the fluid generates vortices at the position where the nitrogen is ejected, and the fluid is fully mixed for the second time. Nitrogen is fully dissolved in the vegetable oil, so that the oil reaches a saturated state. At the position of the pipeline where the vegetable oil flows through later, nitrogen can be precipitated to isolate oxygen on the surface of the oil for protection. The utility model uses nitrogen to isolate oxygen in the air and delays and reduces the degree of oxidation and rancidity of the oil.

[0061] The above-mentioned implementation mode is only for illustrating the technical features and concepts of the utility model, and its purpose is to enable technicians familiar with this technology in the field to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit and implementation mode of the utility model should be included in the protection scope of the utility model.

Claims

1. A grease nitrogen dissolving mechanism, characterized in that it comprises: an air intake pipe for supplying nitrogen; The gas outlet assembly is arranged at the gas outlet end of the gas inlet pipeline and is used to discharge the nitrogen transported by the gas inlet pipeline into the grease in the oil pipeline; the gas outlet assembly includes: An air distribution cone is arranged at the air outlet end of the air inlet pipe, and first air holes are evenly distributed on the air distribution cone; A gas distribution plate is arranged at the gas outlet end of the gas distribution cone, and second vent holes are evenly distributed on the gas distribution plate; The air intake pipeline comprises an air intake main pipe and an air intake elbow pipe arranged at the air outlet end of the air intake main pipe.

2. The grease nitrogen dissolving mechanism according to claim 1, characterized in that: The air intake pipe is provided with reinforcing ribs to prevent the air intake pipe from vibrating and making abnormal noises due to the impact of the fluid on the air outlet assembly.

3. The grease nitrogen dissolving mechanism according to claim 1, characterized in that: The central axis of the air distribution cone is arranged perpendicular to the central axis of the air intake main pipe.

4. The grease nitrogen dissolving mechanism according to claim 1, characterized in that: Self-cleaning half holes are evenly distributed on the circumferential edge of the gas distribution plate to discharge the liquid in the gas distribution cone.

5. The grease nitrogen dissolving mechanism according to claim 1, characterized in that: The gas distribution plate is threadedly connected to the gas distribution cone.

6. The grease nitrogen dissolving mechanism according to claim 5, characterized in that: The gas distribution cone and the gas distribution plate are connected by a tightening tube assembly, and the tightening tube assembly includes a matching inner cone threaded tube and an outer cone threaded tube, and the inner cone threaded tube and the outer cone threaded tube are respectively correspondingly arranged on the gas distribution cone or the gas distribution plate.

7. The grease nitrogen dissolving mechanism according to claim 1, characterized in that: A handle is provided on the gas distribution disk for tightening or loosening the gas distribution disk on the gas distribution cone.

8. The grease nitrogen dissolving mechanism according to claim 1, characterized in that: The first vent holes are arranged in a plurality of concentric circles along the central axis of the gas dividing cone; The second vent holes are arranged in a concentric circle with the center of the gas distribution plate as the center; The diameters of the first vent hole and the second vent hole are both 0.5-1 mm, and the total ventilation area of ​​the first vent hole and the second vent hole is equal to the inner cross-sectional area of ​​the intake pipe.

9. Oil pipeline, characterized by: The oil pipeline is provided with the oil nitrogen dissolving mechanism as described in any one of claims 1 to 8.

10. The oil pipeline according to claim 9, characterized in that: A mounting pipe is vertically arranged on the oil pipeline, a matching flange and a flange cover are arranged on the mounting pipe, and an air inlet pipe of the grease nitrogen dissolving mechanism is arranged on the flange cover.

11. The oil pipeline according to claim 10, characterized in that: The air inlet pipeline of the grease nitrogen dissolving mechanism is eccentrically arranged on the flange cover; the air inlet pipeline is arranged vertically to the flange cover.

12. The oil pipeline according to claim 9, characterized in that: The central axis of the gas separation cone of the grease nitrogen dissolving mechanism is coaxially arranged with the central axis of the oil pipeline.

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