Diesel additive mixing pipeline structure
By installing a pipeline mixer with a spiral plate and guide block on the diesel delivery pipe, the problem of uneven mixing of diesel additives and refined diesel has been solved, thereby improving product stability and production efficiency.
Patent Information
- Application Number
- CN202422849116.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Uneven mixing of diesel additives and refined diesel fuel leads to product instability, fluctuating test data, increased testing frequency and costs, and high energy consumption and low production efficiency.
A pipeline mixer is installed on the refined diesel delivery pipeline. The mixer contains multiple spiral plates with adjacent spiral plates twisting in opposite directions. Combined with guide blocks and perforated plates, the refined diesel and additives are fully mixed through the cutting action of the spiral plates and the guiding action of the guide blocks.
It improves the mixing uniformity of diesel additives and refined diesel, stabilizes product quality, reduces testing frequency and cost, lowers energy consumption, and improves production efficiency.
Smart Images
Figure CN223524979U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to diesel pipeline liquid material mixing technical field, specifically is a diesel additive mixing pipeline structure. BACKGROUND
[0002] The main product of the diesel hydrogenation modification device of petrochemical enterprises is the national six diesel, due to the limitation of raw materials and process, the condensation point, the grinding mark and the static value of the refined diesel produced cannot reach the national six requirements, and it is necessary to add the pour point depressant, the anti-wear agent and the antistatic agent in the diesel to ensure that the diesel is qualified. In the system operation process, the following problems exist: 1. the diesel additive filling point is DN20 pipeline, which is connected vertically into the refined diesel delivery pipeline, due to the larger viscosity of diesel, the diesel additive cannot be uniformly mixed with the refined diesel in the pipeline, which causes inaccurate test data and unstable product indexes out of the device; 2. the diesel additive and diesel are not stably mixed, the test data fluctuates, the additive injection amount fluctuates, and the product cost increases; 3. due to the uneven mixing of diesel additive and diesel, frequent sampling and test analysis are caused, which increases the test cost and labor cost. The uneven mixing of diesel and additive causes product data fluctuation out of the device, long tank area blending time, high energy consumption and low production efficiency. SUMMARY
[0003] The utility model discloses to solve the problem that the refined diesel and additive are not fully mixed, product instability and frequent test, and provide a diesel additive mixing pipeline structure for fully mixing the refined diesel and additive in the conveying process.
[0004] To solve the above technical problems, the utility model discloses a refined diesel delivery pipe, be connected with at least one diesel additive delivery pipe for injecting diesel additive into refined diesel on the refined diesel delivery pipe, characterized by: the refined diesel delivery pipe is equipped with a pipeline mixer for mixing refined diesel and diesel additive, the pipeline mixer includes a mixing pipe section, a plurality of twisted spiral plates are arranged in the mixing pipe section, the twisting directions of two adjacent spiral plates are opposite, a plurality of spiral plates are sequentially arranged along the axis of the mixing pipe section, and a guide block for guiding the flow direction of refined diesel to the front end of the spiral plate is arranged in the pipeline mixer.
[0005] After the above structure, the refined diesel oil is conveyed, the diesel oil additive is injected into the refined diesel oil delivery pipe through the diesel oil additive delivery pipe, the mixed liquid of the refined diesel oil and the diesel oil additive enters the pipeline mixer together, and then is continuously conveyed after being fully mixed and uniformly distributed in the pipeline mixer. The mixed liquid is mainly mixed in the mixing pipe section, a plurality of spiral plates are arranged in the mixing pipe section, the spiral plates are arranged in the axial position of the mixing pipe section, that is, in the center position of the mixing pipe section, when the mixed liquid flows through the spiral plates, the spiral plates cut and guide the flow, the adjacent two spiral plates are twisted in opposite directions, when the mixed liquid flows through the next spiral plate, the next spiral plate cuts and guides the flow in the opposite direction, and the mixed liquid is fully mixed after alternating left and right rotation for several times; the refined diesel oil is conveyed from front to back, the pipeline mixer is provided with a guide block, the guide block guides the flow direction of the refined diesel oil to the front end of the spiral plate, that is, the guide block is arranged in front of the front end of the spiral plate, the mixed liquid flows through the spiral plate after passing through the guide block, and the flow direction of the mixed liquid is towards the spiral plate after passing through the guide block, that is, the flow direction is towards the center axis of the mixing pipe section, so that the mixed liquid "hits" the front end of the spiral plate, the cutting and collision force of the front end of the spiral plate on the mixed liquid is enhanced, and the mixing effect is improved.
[0006] The twist angle of a single spiral plate is 180° or 270°.
[0007] The adjacent two spiral plates are connected between the end portions close to each other.
[0008] The diameter of the mixing pipe section is greater than that of the refined diesel oil delivery pipe, the front and rear ends of the mixing pipe section are respectively connected with the gradually expanding section and the gradually reducing section connected with the refined diesel oil delivery pipe, and the guide block is located in the gradually expanding section.
[0009] The guide block is arranged on the axis of the gradually expanding section, and the cross-sectional area of the guide block gradually increases and then gradually decreases along the flow direction of the refined diesel oil.
[0010] The gradually reducing section is provided with a perforated plate perpendicular to the flow direction of the refined diesel oil, and a plurality of holes are uniformly distributed on the perforated plate.
[0011] The mixing pipe section is detachably connected with the gradually expanding section and the gradually reducing section, and the gradually expanding section and the gradually reducing section are detachably connected with the refined diesel oil delivery pipe.
[0012] The refined diesel oil delivery pipe is provided with a bypass pipeline arranged in parallel with the pipeline mixer.
[0013] The utility model discloses a pipeline mixer is set up on the refined diesel oil outer delivery pipe, and the mixed liquid of refined diesel oil and diesel oil auxiliary agent is mixed fully and uniformly, the pipeline mixer is equipped with guide block, a plurality of spiral plates, perforated plate who sets gradually along the diesel oil flowing direction, and the guide block guides the flowing direction of mixed liquid material to the spiral plate of front end, enhances the collision cutting strength of spiral plate of front end to mixed liquid material, improves mixing effect, the twist direction of adjacent two spiral plates is opposite, and the mixed liquid material is alternately rotated and mixed when flowing through spiral plate, makes refined diesel oil and diesel oil auxiliary agent get fully mixed, and the perforated plate plays the role of changing flowing direction, liquid material uniform flow and mixing to mixed liquid material, and the detachable connection mode is used between the pipeline mixer and refined diesel oil outer delivery pipe and between the pipeline mixer, and the installation, overhaul and replacement of pipeline and parts are convenient. Refined diesel oil and diesel oil auxiliary agent are mixed fully and uniformly after the pipeline structure of the utility model, improve the stability of product quality, and reduce the frequency of sampling test. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the structural schematic diagram of the utility model;
[0015] Figure 2 It is the internal structure schematic diagram of the pipeline mixer, and the twist angle of single spiral plate in the drawing is 180 DEG;
[0016] Figure 3 It is Figure 2 The schematic diagram of the pipeline mixer of each component in the drawing is separated;
[0017] Figure 4 (a), (b) are respectively A-A, B-B cross section schematic diagram of Figure 3
[0018] Figure 5 It is another internal structure schematic diagram of the pipeline mixer, and the twist angle of single spiral plate in the drawing is 270 DEG;
[0019] Figure 6 It is the schematic diagram of the pipeline mixer of each component in the drawing is separated; Figure 5
[0020] In the drawing: 1, refined diesel oil outer delivery pipe;11, pour point depressant pipe;12, anti-wear agent pipe;13, antistatic agent pipe;14, bypass pipeline;2, pipeline mixer;21, gradually expanding section;211, first reducing joint;212, guide block;22, mixing pipe section;221, straight pipe shell;222, spiral plate;23, gradually contracting section;231, second reducing joint;232, perforated plate. DETAILED DESCRIPTION
[0021] Refer to Figures 1-6 The utility model relates to a diesel oil additive mixing pipeline structure, which comprises a refined diesel oil delivery pipe 1 for delivering refined diesel oil, at least one diesel oil additive delivery pipe connected to the refined diesel oil delivery pipe 1, and diesel oil additives injected into the refined diesel oil through the diesel oil additive delivery pipe, Figure 1 The diesel oil additive delivery pipe comprises a pour point depressant pipe 11, an anti-wear agent pipe 12 and an antistatic agent pipe 13, and the pour point depressant, the anti-wear agent and the antistatic agent are injected into the refined diesel oil delivery pipe 1 through the pour point depressant pipe 11, the anti-wear agent pipe 12 and the antistatic agent pipe 13 respectively, a pipeline mixer 2 is arranged on the refined diesel oil delivery pipe 1, the pipeline mixer 2 fully mixes and uniformly distributes the refined diesel oil and various additives, the pipeline mixer 2 is arranged behind the diesel oil additive delivery pipe, the refined diesel oil flows from front to back, and the front and back positions are defined according to the flow direction of the refined diesel oil. The refined diesel oil delivery pipe 1 is also provided with a bypass pipeline 14 arranged in parallel with the pipeline mixer 2, and the bypass pipeline 14 is provided with a control valve.
[0022] Referring to Figures 1-6 The pipeline mixer 2 comprises a mixing pipe section 22, which is composed of a straight pipe shell 221 and a plurality of twisted spiral plates 222 arranged in the straight pipe shell 221, the spiral plates 222 cut and stir the mixture of the refined diesel oil and the diesel oil additives, the twisting directions of two adjacent spiral plates 222 are opposite, that is, one spiral plate 222 twists to the left and the adjacent spiral plate 222 twists to the right, and the plurality of spiral plates 222 are arranged along the axis of the mixing pipe section 22, that is, the spiral plates 222 are arranged on the central axis of the mixing pipe section 22 in sequence, as shown in Figs. Figure 2 、 3 , 5 and 6, the adjacent spiral plates 222 are connected between the close end portions, the plurality of spiral plates 222 are connected as a whole, and of course, the spiral plates 222 can also be arranged separately with a gap, the mixture of the refined diesel oil and the diesel oil additives is mainly mixed in the mixing pipe section 22, the mixture alternately rotates left and right when flowing through the spiral plates 222, so as to uniformly mix the mixture, and a single spiral plate 222 is a stirring unit, Figure 2 、 3 The twisting angle of the single spiral plate 222 in the stirring unit is 180°, Figure 5 、 6The torsion angle of the single helical plate 222 in the mixing pipe section 22 is 270°. The pipe diameter of the mixing pipe section 22 is larger than that of the refined diesel oil delivery pipe 1, and the pipe mixer 2 has a larger resistance to the mixed liquid, so the pipe diameter of the mixing pipe section 22 is increased to reduce the resistance to the mixed liquid. The front and rear ends of the mixing pipe section 22 are connected with the refined diesel oil delivery pipe 1 through the gradually expanding section 21 and the gradually reducing section 23 respectively. The gradually expanding section 21 comprises a first reducing joint 211, the small end of the gradually expanding section 21 is connected with the refined diesel oil delivery pipe 1, and the large end is connected with the liquid inlet end of the straight pipe shell 221. The gradually reducing section 23 comprises a second reducing joint 231, the small end of the gradually reducing section 23 is connected with the refined diesel oil delivery pipe 1, and the large end is connected with the liquid outlet end of the straight pipe shell 221. In order to facilitate the installation, maintenance and replacement of the pipe and components, the mixing pipe section 22 is detachably connected with the gradually expanding section 21 and the gradually reducing section 23, and the gradually expanding section 21 and the gradually reducing section 23 are detachably connected with the refined diesel oil delivery pipe 1. Specifically, the flange connection method is adopted. In order to facilitate the flange connection, the two ends of the reducing joint are connected with short pipes, which belongs to the conventional design in the field. Figure 2 、 5 As shown in Figs. 5, 6 and 7, the gradually expanding section 21 is provided with a guide block 212. The guide block 212 can guide the flow direction of the refined diesel oil to the front end of the helical plate 222. The guide block 212 is arranged close to the front end of the helical plate 222. The guide block 212 and the helical plate 222 are fixedly installed in the pipe mixer 2 through connecting ribs or sheets, which are not shown in the figure. Specifically, the guide block 212 is arranged on the axis of the gradually expanding section 21, i.e. the guide block 212 is located in the center of the cross section of the gradually expanding section 21. The cross section of the guide block 212 gradually increases and then gradually decreases along the flow direction of the refined diesel oil. The flow area of the guide block 212 gradually decreases and then gradually increases. Figure 2 、 3 As shown in Figs. 5, 6 and 7, the side profile of the guide block 212 is a smooth closed curved surface. The cross section of the guide block 212 is preferably circular. The maximum cross section area of the guide block 212 accounts for 30-40% of the cross section area of the pipe section where the guide block 212 is arranged. When the mixed liquid contacts the front end of the guide block 212 and flows to the periphery with a large flow rate, it is not easy to be deposited and blocked. When the mixed liquid passes through the maximum cross section of the guide block 212 and flows to the center of the pipe, the helical plate 222 is arranged on the axis of the mixing pipe section 22. The mixed liquid is guided by the guide block 212 and "hits" the front end of the helical plate 222, thereby enhancing the collision and cutting force of the front end of the helical plate 222 on the mixed liquid, improving the mixing effect, and appropriately reducing the number or length of the helical plate 222, thereby reducing the length of the mixing pipe section 22 and the overall length of the pipe mixer 2, and saving the installation space. Figure 2 、 5As shown, the tapered section 23 is provided with a perforated plate 232 perpendicular to the flow direction of refined diesel, the perforated plate 232 is provided with a plurality of holes, the holes on the perforated plate 232 are uniformly distributed, the flow direction of the mixed liquid changes when passing through the perforated plate 232, so that the mixed liquid uniformly flows out, and also plays a certain mixing role.
[0023] It should be noted that: the actual pipeline is also provided with detection meters, valves and other accessories, such as the control valve provided on the refined diesel delivery pipe 1 at both ends of the pipeline mixer 2, which belongs to the conventional setting in the field, and is not shown in the drawings or text.
[0024] Working principle: the pour point depressant, the anti-wear agent and the anti-static agent are respectively injected into the refined diesel delivery pipe 1 through the pour point depressant pipe 11, the anti-wear agent pipe 12 and the anti-static agent pipe 13, and the diesel additive enters the pipeline mixer 2 with the diesel additive. Due to the gradually increasing and then gradually decreasing cross-sectional area of the guide block 212, the corresponding flow area gradually decreases and then gradually increases. When the mixed liquid of refined diesel and diesel additive flows to the front end of the guide block 212, the mixed liquid flows to the periphery under the guide effect of the guide block 212, and the flow rate increases, so that deposition and blockage are not easy to occur. When the mixed liquid passes through the maximum cross-sectional area of the guide block 212, it flows to the center of the pipeline. The spiral plate 222 is arranged on the axis of the mixing pipe section 22. After being guided by the guide block 212, the mixed liquid "hits" the front-end spiral plate 222. Compared with the mixed liquid directly flowing through the spiral plate 222, the collision and cutting force of the front-end spiral plate 222 on the mixed liquid increases, which improves the mixing effect, reduces the number or length of the rear spiral plate 222, and further reduces the overall length and installation space of the pipeline mixer 2. The mixed liquid continues to flow backward under the cutting and guiding effect of the spiral plate 222, and the mixed liquid presents spiral flow backward. Since the twisting directions of the spiral plates 222 are opposite, the rotation direction of the mixed liquid changes every time it passes through a spiral plate 222. After alternating left and right rotation for several times, the mixed liquid is uniformly mixed. The mixed liquid uniformly flows out from the perforated plate 232 after passing through the spiral plate 222, and the perforated plate 232 has a certain mixing effect on the mixed liquid, which ensures that the refined diesel and the diesel additive are fully mixed and uniformly distributed.
[0025] The utility model discloses a diesel oil auxiliary agent mixed pipeline structure, the mixed liquid of refined diesel oil and diesel oil auxiliary agent enters pipeline mixer, be equipped with a plurality of spiral plate in pipeline mixer, and the mixed liquid generates whirl flow under the cutting effect of spiral plate, and the twist direction of adjacent spiral plate is opposite, and the mixed liquid produces reverse whirl flow flow, and the mixed liquid mixes evenly after left and right rotation of multiple alternation, and the front of spiral plate is equipped with guide block, and the flow direction of mixed liquid is guided to the spiral plate of front end by guide block, and the collision cutting strength of front end spiral plate to mixed liquid is increased, and the mixed effect is improved, can reduce the quantity or length of spiral plate, and the overall length and installation space of pipeline mixer are reduced, and the mixed liquid of refined diesel oil and diesel oil auxiliary agent mixes evenly after pipeline mixer, and the stability of product is improved, and the frequency of sampling assay is reduced, and the assay cost is reduced.
Claims
1. A diesel additive mixing line structure comprising a refined diesel delivery pipe (1) to which at least one diesel additive delivery pipe for injecting a diesel additive into refined diesel is connected, characterized in that: The refined diesel oil delivery pipe (1) is provided with a pipeline mixer (2) for mixing refined diesel oil with diesel oil additives, the pipeline mixer (2) comprises a mixing pipe section (22), a plurality of twisted spiral plates (222) are arranged in the mixing pipe section (22), the twisting directions of two adjacent spiral plates (222) are opposite, and the plurality of spiral plates (222) are sequentially arranged along the axis of the mixing pipe section (22), and the pipeline mixer (2) is provided with a guide block (212) for guiding the flow direction of the refined diesel oil to the front end of the spiral plate (222).
2. The diesel agent mixing line structure according to claim 1, characterized by: The twisting angle of each spiral plate (222) is 180° or 270°.
3. The diesel agent mixing conduit structure according to claim 1, characterized by: The two adjacent spiral plates (222) are connected between the close end portions.
4. The diesel agent mixing conduit structure according to claim 1, characterized by: The pipe diameter of the mixing pipe section (22) is greater than that of the refined diesel oil delivery pipe (1), the front and rear ends of the mixing pipe section (22) are respectively connected with the gradually expanding section (21) and the gradually reducing section (23) connected with the refined diesel oil delivery pipe (1), and the guide block (212) is located in the gradually expanding section (21).
5. The diesel agent mixing conduit structure according to claim 4, characterized by: The guide block (212) is arranged on the axis of the gradually expanding section (21), and the cross-sectional area of the guide block (212) gradually increases and then gradually decreases along the flow direction of the refined diesel oil.
6. The diesel agent mixing conduit structure according to claim 5, characterized by: The gradually reducing section (23) is provided with a perforated plate (232) perpendicular to the flow direction of the refined diesel oil, and a plurality of holes are uniformly arranged on the perforated plate (232).
7. The diesel agent mixing conduit structure according to claim 4, characterized by: The mixing pipe section (22), the gradually expanding section (21) and the gradually reducing section (23) are detachably connected, and the gradually expanding section (21) and the gradually reducing section (23) are detachably connected with the refined diesel oil delivery pipe (1).
8. The diesel agent mixing conduit structure according to claim 1, characterized by: The refined diesel oil delivery pipe (1) is provided with a bypass pipeline (14) arranged in parallel with the pipeline mixer (2).