A pump inlet line filter for producing fischer-tropsch refined wax

Abstract

The utility model relates to pump inlet filter technical field especially relates to a kind of pump inlet pipeline filter for producing fischer-tropsch refined wax, including pump inlet pipe and filter mechanism, the rear end of pump inlet pipe is equipped with filter mechanism, the filter mechanism includes seamless steel pipe, the outer ring of the seamless steel pipe is equipped with reducing tee, the inner side surface of the seamless steel pipe is equipped with basket strainer, first, seamless steel pipe and reducing tee, flange are welded as integral filter unit, then directly with pump inlet pipeline, material source pipeline welding butt joint, without additional cutting or reserving installation position on original pipeline, integral installation can be completed using bolt connection blind flange, welding integrated structure reduces the number of interface, reduces the risk of leakage, simultaneously because all components are pipeline general piece, installation personnel can rely on existing pipeline construction experience to complete operation, without additional training, substantially improve installation efficiency and reduce construction cost.

Description

Technical Field

[0001] This utility model relates to the field of pump inlet filter technology, and in particular to a pump inlet line filter for producing Fischer-Tropsch refined wax. Background Technology

[0002] In the production process of Fischer-Tropsch refined wax, the pump, as the core material conveying equipment, needs to achieve clean delivery of wax through the inlet pipeline filter. The pump inlet filter uses screening or adsorption. The filter needs to be connected in series between the material source pipeline and the pump inlet pipe. The material enters the seamless steel pipe after entering the reducing tee from the material source pipeline. The material passes through the basket filter to intercept mechanical impurities such as catalyst particles and pipe debris. The filtered clean wax enters the pump body through the pump inlet pipe.

[0003] Traditional filters require the separate purchase of specialized equipment and compatible components, resulting in a wide variety of products, high costs, and the possibility of filtration continuity being affected by mismatched specifications. Furthermore, installation requires cutting existing pipelines, reserving installation positions, and has multiple interfaces that are prone to leakage. Additional training is also required, leading to low installation efficiency and high construction costs.

[0004] To address the aforementioned issues, a search revealed a circulating water pump pipeline filter disclosed in patent publication number CN213699015U. The patent describes a filter that "filters the liquid within the pipeline by setting a filter cone; facilitates the installation of the filter cone within the pipeline by setting a middle flange; and enhances the strength of the filter cone by setting reinforcing ribs and reinforcing rings, exhibiting high efficiency, stability, and ease of disassembly." However, this filter relies on the middle flange for installation, and during long-term use, it is susceptible to leakage risks due to material impacts and pipeline vibrations.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a pump inlet pipeline filter for the production of Fischer-Tropsch refined wax, in order to solve the problems mentioned in the background art that traditional filters require separate purchase of special equipment and matching parts, have a wide variety of types, high costs, and are prone to affecting the continuity of filtration due to specification mismatch. They also require cutting the original pipeline, reserving installation positions, and have many interfaces that are prone to leakage, as well as requiring additional training, resulting in low installation efficiency and high construction costs.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pump inlet line filter for producing Fischer-Tropsch refined wax, comprising a pump inlet pipe and a filtering mechanism.

[0008] A filter mechanism is installed at the rear end of the pump inlet pipe;

[0009] The filtration mechanism includes a seamless steel pipe, with a reducing tee fitted around the outer ring of the seamless steel pipe, a basket filter screen installed on the inner surface of the seamless steel pipe, a flange installed at the rear end of the reducing tee, a blind flange installed at the rear end of the flange, an inlet at the rear end of the pump inlet pipe, and a material source pipe installed at the upper end of the reducing tee.

[0010] Preferably, the dimensions of the seamless steel pipe are: The dimensions of the reducing tee are: The seamless steel pipe is fixed to the reducing tee by welding, and the reducing tee is fixed to the flange by welding.

[0011] Preferably, the flange is a DN100 / PN16 flange, the blind flange is a DN100 / PN16 blind flange, and the flange and the blind flange are connected by bolts.

[0012] Preferably, the front end of the flange is provided with a limiting groove, the outer ring of the reducing tee is fitted with an insulation sleeve, and the flange and the insulation sleeve are limited and snapped together by the limiting groove.

[0013] Preferably, a limiting ring is installed at the front end of the basket filter screen, and the outer ring of the limiting ring is provided with external threads. The seamless steel pipe is connected to the basket filter screen through the limiting ring.

[0014] Preferably, a wax scraper is installed at the rear end of the basket filter screen. The wax scraper is annular and its outer circumferential surface is in close contact with the inner wall of the seamless steel pipe.

[0015] Preferably, the seamless steel pipe has an installation groove at its front end, a check block at its front end, a fixing rod fixedly installed at the upper end of the seamless steel pipe, and a rotating ring fixedly installed at the upper end of the check block. The fixing rod and the rotating ring form a rotating structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The filter chamber is made of seamless steel pipe, and the built-in basket filter screen realizes the core filtration function. The reducing tee connects the material source pipeline to the filter chamber. The flange and blind flange form a sealing and protection structure. All components of the entire filtration system are general standard parts for pipeline engineering. There is no need to purchase special filter equipment separately. This reduces the types and costs in the procurement process and avoids the compatibility problem caused by the mismatch between special equipment and pipeline specifications. It solves the cumbersome and extra expenses of separate procurement.

[0018] 2. First, weld the seamless steel pipe with reducing tees and flanges to form an integrated filter unit. Then, weld it directly to the pump inlet pipe and material source pipe. There is no need to cut or reserve installation positions on the original pipeline. The whole installation can be completed by bolting the blind flange. The welded integrated structure reduces the number of interfaces and reduces the risk of leakage. At the same time, since all components are common pipe parts, the installers can complete the operation based on their existing pipeline construction experience without additional training, which greatly improves the installation efficiency and reduces the construction cost. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the interaction between the reducing tee and the material source pipeline of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the basket filter and the limiting ring of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the seamless steel pipe and the check block that cooperate with each other in this utility model.

[0023] In the diagram: 1. Pump inlet pipe; 2. Filter mechanism; 201. Seamless steel pipe; 202. Reducing tee; 203. Basket filter screen; 204. Flange; 205. Blind flange; 206. Inlet; 207. Material source pipeline; 3. Insulation sleeve; 4. Limiting ring; 5. Wax scraper; 6. Mounting groove; 7. Check block; 8. Fixing rod; 9. Rotating ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 This utility model provides a technical solution: a pump inlet line filter for producing Fischer-Tropsch refined wax, comprising a pump inlet pipe 1 and a filter mechanism 2.

[0026] A filter mechanism 2 is installed at the rear end of the pump inlet pipe 1;

[0027] The filter mechanism 2 includes a seamless steel pipe 201, with a reducing tee 202 fitted around the outer ring of the seamless steel pipe 201. A basket filter screen 203 is installed on the inner surface of the seamless steel pipe 201. A flange 204 is installed at the rear end of the reducing tee 202, and a blind flange 205 is installed at the rear end of the flange 204. An inlet 206 is provided at the rear end of the pump inlet pipe 1. A material source pipe 207 is provided at the upper end of the reducing tee 202. When the user uses the filter mechanism 2, Fischer-Tropsch refined wax flows into the reducing tee 202 from the material source pipe 207, and after being guided, it enters the interior of the seamless steel pipe 201. The basket filter screen 203 accurately intercepts mechanical impurities such as catalyst particles and pipe debris in the wax. The filtered clean wax enters the pump inlet pipe 1 through the inlet 206 and is transported to the pump body.

[0028] Furthermore, the dimensions of seamless steel pipe 201 are as follows: The dimensions of reducing tee 202 are as follows: Seamless steel pipe 201 is fixed to reducing tee 202 by welding, and reducing tee 202 is fixed to flange 204 by welding. Through the setting of reducing tee 202, its tee structure can guide the flow of Fischer-Tropsch refined wax, guide the material to flow smoothly into the filter chamber, avoid material turbulence and stagnation caused by sudden changes in pipe diameter, and reduce the risk of low-temperature waxing and impurity deposition.

[0029] Furthermore, flange 204 is set as a DN100 / PN16 flange, and blind flange 205 is set as a DN100 / PN16 blind flange. Flange 204 and blind flange 205 are connected by bolts. With the setting of blind flange 205, the filter chamber can be quickly opened without disassembling the entire welded pipeline, making it convenient for users to take out the basket filter screen 203 to clean impurities or replace parts, greatly reducing maintenance difficulty and downtime.

[0030] Furthermore, a limiting groove is provided at the front end of flange 204, and an insulation sleeve 3 is provided on the outer ring of reducing tee 202. Flange 204 and insulation sleeve 3 are limited and snapped together by the limiting groove. The setting of insulation sleeve 3 can effectively reduce the heat loss of Fischer-Tropsch refined wax during the transportation process, maintain the wax material in the pipeline at a suitable flow temperature, and prevent the wax material from solidifying and adhering to the pipe wall or the surface of basket filter 203 due to low temperature, thereby preventing the flow channel from being blocked.

[0031] Furthermore, a limiting ring 4 is installed at the front end of the basket filter 203. The outer ring of the limiting ring 4 is provided with external threads. The seamless steel pipe 201 is connected to the basket filter 203 through the limiting ring 4. Through the setting of the limiting ring 4, the threaded connection structure allows the basket filter 203 to be disassembled and installed without complicated tools. After the user opens the blind flange 205, he only needs to rotate the limiting ring 4 to quickly take out or install the filter.

[0032] Furthermore, a scraper 5 is installed at the rear end of the basket filter 203. The scraper 5 is ring-shaped, and its outer circumference is tightly fitted to the inner wall of the seamless steel pipe 201. With the scraper 5, when the user removes the basket filter 203, the scraper 5 will move with the filter to perform secondary cleaning of the pipe wall, eliminating the need for additional scraping steps and greatly reducing the maintenance process.

[0033] Furthermore, the seamless steel pipe 201 has an installation groove 6 at its front end, and a check block 7 at its front end. A fixing rod 8 is fixedly installed at the upper end of the seamless steel pipe 201, and a rotating ring 9 is fixedly installed at the upper end of the check block 7. The fixing rod 8 and the rotating ring 9 form a rotating structure. With the setting of the check block 7, it can automatically open with the thrust of the filtered wax material when the pump is running, ensuring that the clean wax material flows smoothly into the pump inlet pipe 1. When the pump stops, the check block 7 resets and closes under its own weight, tightly fitting the front end of the installation groove 6, effectively blocking the wax material backflow channel.

[0034] Working principle: The pump inlet pipe 1 is connected to the filter mechanism 2. The Fischer-Tropsch refined wax, transported by the material source pipe 207, first flows into the reducing tee 202. Through its tee structure, it is directed to the seamless steel pipe 201. The reducing tee 202, seamless steel pipe 201, and flange 204 are welded together to form an integral filter chamber. After the wax enters the seamless steel pipe 201, it is intercepted by the basket filter 203, which traps catalyst particles, pipe debris, and other mechanical impurities. The basket filter 203 is fixed to the inner wall of the seamless steel pipe 201 by a front-end limiting ring 4. The insulation sleeve 3 is fitted around the outer ring of the reducing tee 202 and is secured by the limiting groove at the front end of the flange 204, reducing wax buildup. To prevent heat loss and low-temperature wax formation, the filtered clean wax pushes the check block 7, causing it to rotate around the fixed rod 8 via the rotating ring 9 and open. The wax flows into the pump inlet pipe 1 through the inlet 206 and is delivered to the pump body. The mounting groove 6 provides a closed positioning for the check block 7. When the pump stops, the check block 7 resets and closes under its own weight to prevent the wax from flowing back. When maintenance is required, the connecting bolts between the flange 204 and the blind flange 205 are removed. After opening the blind flange 205, the limit ring 4 is rotated to remove the basket filter screen 203. At this time, the wax scraper 5 at the rear end of the basket filter screen 203 moves synchronously with the filter screen to scrape off the residual wax layer and impurities on the pipe wall for a second time. After cleaning or replacement, the operation is reversed to complete the reset.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pump inlet line filter for producing Fischer-Tropsch refined wax, comprising a pump inlet pipe (1) and a filter mechanism (2), characterized in that: A filter mechanism (2) is installed at the rear end of the pump inlet pipe (1); The filtration mechanism (2) includes a seamless steel pipe (201), a reducing tee (202) is fitted around the outer ring of the seamless steel pipe (201), a basket filter screen (203) is installed on the inner surface of the seamless steel pipe (201), a flange (204) is installed at the rear end of the reducing tee (202), a blind flange (205) is installed at the rear end of the flange (204), an inlet (206) is provided at the rear end of the pump inlet pipe (1), and a material source pipe (207) is provided at the upper end of the reducing tee (202).

2. A pump inlet line filter for producing Fischer-Tropsch refined wax according to claim 1, characterized in that: The seamless steel pipe (201) and the reducing tee (202) are fixed together by welding, and the reducing tee (202) and the flange (204) are fixed together by welding.

3. A pump inlet line filter for producing Fischer-Tropsch refined wax according to claim 1, characterized in that: The flange (204) and the blind flange (205) are connected by bolts.

4. A pump inlet line filter for producing Fischer-Tropsch refined wax according to claim 1, characterized in that: The flange (204) has a limiting groove at its front end, and the outer ring of the reducing tee (202) is fitted with a heat insulation sleeve (3). The flange (204) and the heat insulation sleeve (3) are connected by the limiting groove.

5. A pump inlet line filter for producing Fischer-Tropsch refined wax according to claim 1, characterized in that: The basket filter (203) is equipped with a limiting ring (4) at its front end. The outer ring of the limiting ring (4) is provided with external threads. The seamless steel pipe (201) is connected to the basket filter (203) through the limiting ring (4).

6. A pump inlet line filter for producing Fischer-Tropsch refined wax according to claim 1, characterized in that: The basket filter (203) is equipped with a wax scraper (5) at its rear end. The wax scraper (5) is annular and its outer circumferential surface is tightly fitted to the inner wall of the seamless steel pipe (201).

7. A pump inlet line filter for producing Fischer-Tropsch refined wax according to claim 1, characterized in that: The seamless steel pipe (201) has an installation groove (6) at its front end, a check block (7) at its front end, a fixing rod (8) fixedly installed at the upper end of the seamless steel pipe (201), and a rotating ring (9) fixedly installed at the upper end of the check block (7). The fixing rod (8) and the rotating ring (9) form a rotating structure.

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