A device for preventing pipeline blockage of a system for reducing the amount of oil sludge in a tank

Abstract

The utility model belongs to the oil and gas field oily sludge treatment field, specifically relates to a kind of prevent prying and install pipeline blockage device of tank cleaning oil sludge reduction system, including incoming material filtering mechanism and pipeline filtering mechanism, the outlet of the incoming material filtering mechanism is connected with the inlet of pipeline filtering mechanism by oil sludge pipeline, the outlet of the pipeline filtering mechanism is connected with the inlet of prying and install tank cleaning oil sludge reduction system by oil sludge pipeline;The incoming material filtering mechanism includes tank cleaning oil sludge incoming material tank and grating plate, the side wall of the tank cleaning oil sludge incoming material tank is located above grating plate and is provided with aperture, the aperture is provided with the baffle that is compatible with its structure and can be opened and closed with tank cleaning oil sludge incoming material tank.The device has the characteristics of high efficiency, small floor area and low cost.Especially suitable for space limited scene, reduce cost while improving processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of oily sludge treatment in oil and gas fields, specifically to a device for preventing pipe blockage in a skid-mounted cleaning tank sludge reduction system. Background Technology

[0002] Currently, the technology for reducing oily sludge in tank cleaning is mainly divided into two treatment modes: "station-based" and "skid-mounted". The skid-mounted treatment mode refers to the use of modular, skid-mounted reduction system equipment to reduce the volume of oily sludge. Skid-mounted tank cleaning oily sludge reduction system is suitable for scenarios with multiple oily sludge treatment sites and large spans in oil and gas fields due to its small footprint, flexible implementation, and ease of installation, disassembly and relocation.

[0003] Oily sludge has a complex composition, often containing construction waste and contaminants. During the operation of a volume reduction system, it can clog pipes, significantly impacting the efficiency of the reduction process. Current technologies primarily prevent pipe clogging by adding an oily sludge pretreatment system at the front end of the system. This involves using vibrating screens and bar screens to remove impurities. However, the vibrating screen / bar screen area and the mechanical feeding area require 200-300 square meters of space. 2 If the existing abandoned well site area cannot meet the land requirements of the pretreatment system, additional land will need to be acquired, incurring land acquisition costs. Furthermore, the operation of the vibrating screen and bar screen requires an underground concrete anti-seepage pool, resulting in high civil engineering costs. For skid-mounted sludge reduction systems, this results in a large system footprint and high costs, making them unsuitable for "skid-mounted" sludge reduction systems.

[0004] In view of this, the present utility model is proposed. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for preventing pipe blockage in a skid-mounted sludge reduction system.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A device for preventing pipe blockage in a skid-mounted sludge reduction system includes an inlet filter mechanism and a pipe filter mechanism. The outlet of the inlet filter mechanism is connected to the inlet of the pipe filter mechanism via a sludge pipeline, and the outlet of the pipe filter mechanism is connected to the inlet of the skid-mounted sludge reduction system via a sludge pipeline.

[0008] The incoming material filtration mechanism includes a cleaning tank for oil sludge and a grating plate. The grating plate is located inside the cleaning tank for oil sludge, 300mm away from the top of the cleaning tank for oil sludge. The side wall of the cleaning tank for oil sludge, above the grating plate, has an opening. A baffle that is adapted to the structure of the opening and can be opened and closed with the cleaning tank for oil sludge is provided at the opening.

[0009] Furthermore, the incoming material filtration mechanism also includes a debris collection trough, which is located outside the baffle and is fixedly connected to the cleaning tank oil sludge incoming material tank.

[0010] Furthermore, the grating plate is inclined inside the sludge inlet tank to form a slope of 10%, which allows the filtered debris to roll down the slope into the debris collection trough.

[0011] Furthermore, the pipeline filtration mechanism includes two filtration components arranged in parallel. The inlets of both filtration components are connected to the outlet of the incoming material filtration mechanism through sludge pipelines, and the outlets of both components are connected to the inlet of the skid-mounted cleaning tank sludge reduction system through sludge pipelines.

[0012] Furthermore, the pipeline filtration mechanism is characterized by including a controller, an electric ball valve on the sludge pipeline connected to the inlet of each of the two filter components, and a flow sensor on the sludge pipeline connected to the outlet of each of the two filter components, wherein the electric ball valve and the flow sensor are respectively connected to the controller.

[0013] Furthermore, the filter assembly includes a housing, a filter grid basket, and a drain outlet. The inlet and outlet are connected to the outer wall of the housing, communicate with the housing, and are symmetrically arranged. The filter grid basket is installed at the center inside the housing, and the drain outlet is located at the bottom of the housing and communicates with the housing.

[0014] Furthermore, the filter grid basket is a cylinder with a hollow structure and a cross-section at the top. The foot of the cross-section is close to the feed inlet and 50mm-100mm lower than the feed inlet, while the top of the cross-section is close to the discharge outlet and 50mm-100mm higher than the feed inlet.

[0015] Furthermore, the filter assembly also includes an upper cover and a ring, the bottom of which is connected to the top of the housing, and a sealing ring and an upper cover are sequentially arranged on the top. The upper cover and the ring are connected by bolts.

[0016] The inner diameter of the ring is larger than the diameter of the filter grid basket.

[0017] Furthermore, the filter assembly also includes a support rod, and symmetrical pads are fixedly connected to the inner wall of the ring. The two ends of the support rod are placed on the corresponding pads. One end of the fixing strap is connected to each pad, and the other end of the fixing strap is detachably connected to the pad by a buckle, which is used to realize the removal or fixing of the support rod on the pad.

[0018] Furthermore, the filter assembly also includes a handle, which is a U-shaped structure. The bottom of the U-shaped structure is connected to a support rod, and the top is detachably connected to both sides of the filter grid basket.

[0019] Compared with existing technologies, the technical solution provided by this utility model adopts a multi-stage filtration anti-clogging mechanism. The incoming material filtration mechanism intercepts large pieces of construction waste and plastic fragments, and the 10% slope design allows the debris to automatically slide into the side debris collection trough. The pipeline filtration mechanism further intercepts small-diameter debris, forming a "coarse filtration + fine filtration" dual-stage barrier to prevent pipeline blockage from the source. The pipeline filtration mechanism adopts a dual-component parallel connection with automatic switching. The flow sensor monitors the outgoing flow rate, and the controller automatically closes the electric ball valve of the blocking component and opens the backup component, realizing non-stop switching and ensuring continuous operation of the volume reduction system. The pipeline filtration mechanism is directly integrated into the sludge pipeline, occupying a small area, meeting the space constraints of skid-mounted systems, and at the same time combining reliability, efficiency and economy. Attached Figure Description

[0020] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the device for preventing pipe blockage in the skid-mounted sludge reduction system of the present invention.

[0023] Figure 2 This is a schematic diagram of the filter assembly of this utility model;

[0024] Figure 3 This is a partial schematic diagram of the filter assembly of this utility model;

[0025] Figure 4 This is a schematic diagram showing the connection between the support rod and the ring of this utility model;

[0026] Figure 5 This is a schematic diagram of the connection between the latch and the pad of this utility model.

[0027] Wherein: 1 is the incoming material filtration mechanism; 2 is the pipeline filtration mechanism; 3 is the skid-mounted sludge reduction system; 11 is the sludge incoming material tank; 12 is the grating plate; 13 is the baffle; 14 is the debris collection trough; 15 is the baffle lock; 21 is the filter assembly; 22 is the controller; 23 is the electric ball valve; 24 is the flow sensor; 211 is the inlet; 212 is the outlet; 213 is the housing; 214 is the filter grating basket; 215 is the drain outlet; 216 is the top cover; 217 is the ring; 218 is the support rod; 219 is the sealing ring; 210 is the handle; 2141 is the disc lock; 2171 is the pad; 2181 is the fixing strap; 2182 is the lock. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses consistent with some aspects of this invention as detailed in the appended claims.

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] See Figures 1-5 This utility model provides a device for preventing pipe blockage in a skid-mounted sludge reduction system. The device includes an inlet filter mechanism 1 and a pipe filter mechanism 2. The outlet of the inlet filter mechanism 1 is connected to the inlet of the pipe filter mechanism 2 via a sludge pipe. The outlet of the pipe filter mechanism 2 is connected to the inlet of the skid-mounted sludge reduction system 3 via a sludge pipeline. The inlet filter mechanism 1 includes a sludge inlet tank 11 and a grating plate 12. The grating plate 12 is connected inside the sludge inlet tank 11 to intercept and remove large pieces of construction waste and sludge contaminants (plastic sheet fragments, geomembrane fragments, oil-absorbing felt fragments) from the sludge inlet tank. It is located 300mm from the top of the sludge inlet tank 11. An opening is provided on the side wall of the sludge inlet tank 11 above the grating plate 12 (the opening is on the side furthest from the outlet of the inlet filter mechanism 1, such as...). Figure 1 The notch is provided with a baffle 13 that is adapted to its structure and can be opened and closed with the sludge receiving tank 11.

[0031] like Figure 1As shown, the incoming material filtering mechanism 1 also includes a debris collection trough 14, which is located outside the baffle 13 and is fixedly connected to the cleaning tank sludge incoming material tank 11. The length of the debris collection trough 14 is the same as the width of the cleaning tank sludge incoming material tank 11.

[0032] Furthermore, the baffle 13 is connected to the side wall of the sludge inlet tank 11 via a baffle latch 15, which is used to open and close the baffle 13. When the baffle latch 15 is in the open state, the intercepted debris can enter the debris collection trough 14 at the bottom. The baffle latch 15 adopts a common truck side panel latch, and its opening and closing principle is the same as that of a truck side panel. Specifically, the bottom of the baffle 13 is hinged to the sludge inlet tank 11, and the hook of the side panel latch is fixedly connected to the upper part of the baffle 13. A side panel latch that can be connected to the hook is fixedly connected to the sludge inlet tank 11. The opening and closing of the baffle 13 is achieved through the cooperation of the hook and the side panel latch. The above-mentioned openable structure is prior art and is not shown in the figure.

[0033] In this embodiment, the grating plate 12 is inclined inside the sludge receiving tank 11 to form a slope. Specifically, the grating plate 12 is inclined toward the debris collection trough 14, so that the filtered debris can roll down the slope toward the debris collection trough 14, with a slope of 10%. The grating plate 12 uses commercially available steel wire, such as 4mm anti-corrosion steel wire, with a smooth surface and a mesh size of 5mm*5mm.

[0034] like Figure 1 As shown, the pipeline filtration mechanism 2 includes two filter components 21 arranged in parallel. The inlets 211 of the two filter components 21 are connected to the outlet of the incoming material filtration mechanism 1 through the sludge pipeline, and the outlets 212 are connected to the inlet of the skid-mounted cleaning tank sludge reduction system 3 through the sludge pipeline.

[0035] Furthermore, the pipeline filtration mechanism 2 also includes a controller 22. Electric ball valves 23 are installed on the sludge pipelines connected to the inlets 211 of the two filter components 21, and flow sensors 24 are installed on the sludge pipelines connected to the outlets 212 of the two filter components 21. The electric ball valves 23 and flow sensors 24 are respectively connected to the controller 22. The controller 22 can be a PLC controller. The electric ball valves 23 are DN200 nominal diameter, 1.6 MPa pressure electric ball valves with stainless steel ball cores, connected to the pipeline via flanges. The flow sensors 24 are clamp-type flow sensors; no pipeline modification is required, the sensor can be directly installed on the pipeline and fixed with clamps.

[0036] Specifically, when the pipeline filtration mechanism 2 is running, one of the filter components 21 is started first. As the filter material in the filter component 21 continues to accumulate, the material flow rate through the outlet 212 will decrease. When the flow rate at the outlet 212 is lower than 60% of the feed flow rate at the inlet 211, the flow sensor 24 transmits a signal to the PLC control system. The PLC control system controls the closing of the electric ball valve 23 on the sludge pipeline of the filter component 21 and opens the electric ball valve 23 on the sludge pipeline of the other filter component 21. The efficient operation of the machine is ensured by the two filtration devices.

[0037] like Figure 2 As shown, the filter assembly 21 includes a housing 213, a filter grid basket 214, and a drain outlet 215. The filter grid basket 214 uses commercially available steel wire, such as 2mm anti-corrosion corrugated steel wire with a rough surface. The mesh size of the filter grid basket 214 is 2mm*2mm, used to intercept and remove small-diameter construction waste and small debris in the reduction system 3. The filter grid basket 214 is installed in the center of the housing 213. The inlet 211 and outlet 212 are connected to the outer wall of the housing 213, communicate with the housing 213, and are symmetrically arranged. The drain outlet 215 is installed at the bottom of the housing 213, communicates with the housing 213, and is used to discharge sediment and other debris deposited at the bottom of the housing 213.

[0038] like Figure 2 As shown, the shell 213 is made of cast iron with corrosion resistance. The shell 213 is a hollow cylindrical structure with an open top and a rounded bottom to facilitate the deposition and discharge of sediment and other debris. During installation, the shell 213 is flush with the ground. The filter grid basket 214 is a hollow cylinder with a sloping top. The foot of the sloping surface is close to the inlet 211 and 50mm-100mm below it, while the top of the sloping surface is close to the outlet 212 and 50mm-100mm above it.

[0039] like Figure 2 As shown, the filter assembly 21 also includes an upper cover 216 and a ring 217. The ring 217 is welded to the top of the housing 213. A sealing ring 219 and the upper cover 216 are sequentially arranged on the top of the ring 217. The upper cover 216 and the ring 217 are connected by bolts. The function of the sealing ring 219 is to prevent air leakage and material spraying during operation. The inner diameter of the ring 217 is larger than the diameter of the filter grid basket 214.

[0040] like Figure 4 and Figure 5As shown, the filter assembly 21 also includes a support rod 218, which is made of 304 stainless steel and has a diameter of 10mm. Symmetrical pads 2171 are fixedly connected to the inner wall of the ring 217. One end of a fixing strap 2181 is connected to each pad 2171, and the other end of the fixing strap 2181 is detachably connected to the pad 2171 via a buckle 2182. This allows for the removal or fixing of the support rod 218 on the pad 2171. The buckle 2182 is fixedly connected to the pad 2171.

[0041] Furthermore, the pad 2171 is made of 304 stainless steel, with a thickness of 20mm, a width of 30mm, and a length of 50mm. It is welded to the inner edge of the ring 217. The fixing band 2181 is made of 304 stainless steel, with a thickness of 0.5mm and a width of 30mm. An opening adapted to the lock tongue structure is provided at the end of the fixing band 2181 that connects to the latch 2182. A protective gasket is added to the edge of the opening to prevent excessive friction between the opening of the fixing band 2181 and the latch 2182, which could cause damage and result in an excessively large opening at the end of the fixing band 2181. The latch is a common duckbill latch. When in use, the duckbill is opened to expose the lock tongue, the opening of the fixing band 2181 is inserted into the lock tongue, the duckbill is closed, and the fixing band 2181 is fixed. After installation, the apex of the support rod 218 is not higher than the top of the ring 217 to prevent insufficient sealing of the sealing ring 219 on the ring 217 during operation.

[0042] like Figure 3 As shown, the filter assembly 21 also includes a handle 210 for fixing the filter grid basket 214. The handle 210 has a U-shaped structure. The bottom of the U-shaped structure is fixedly connected to the support rod 218, and the top is detachably connected to both sides of the filter grid basket 214. Threaded butterfly bolts 2142 are provided at both ends of the top of the U-shaped structure, passing through the filter grid basket 214 and screwed into the threaded holes.

[0043] During installation, first, fix the top of the U-shaped structure to the filter basket 214 with butterfly bolts 2142. Then, close the latches 2182 on the pad 2171 to fix the support plate 218. Next, connect the top cover 216 to the ring 217 with bolts. When the filter basket 214 needs to be cleaned and replaced after intercepting debris, open the top cover 216, open the latches 2182 on the pad 2171 of the ring 217, and loosen the fixing straps 2181. At this time, the support rod 218 can be moved, and the filter basket 214 can be lifted out of the housing 213 for cleaning.

[0044] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0045] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A device for preventing pipe blockage in a skid-mounted sludge reduction system, characterized in that, It includes an incoming material filtration mechanism (1) and a pipeline filtration mechanism (2). The outlet of the incoming material filtration mechanism (1) is connected to the inlet of the pipeline filtration mechanism (2) through an oil sludge pipeline. The outlet of the pipeline filtration mechanism (2) is connected to the inlet of the skid-mounted cleaning tank oil sludge reduction system (3) through an oil sludge pipeline. The incoming material filtration mechanism (1) includes a cleaning tank sludge inlet tank (11) and a grid plate (12). The grid plate (12) is located inside the cleaning tank sludge inlet tank (11) and is 300mm away from the top of the cleaning tank sludge inlet tank (11). The side wall of the cleaning tank sludge inlet tank (11) is provided with an opening above the grid plate (12). A baffle (13) that is adapted to its structure and can be opened and closed with the cleaning tank sludge inlet tank (11) is provided at the opening.

2. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 1, characterized in that, The incoming material filtration mechanism (1) also includes a debris collection trough (14), which is located outside the baffle (13) and is fixedly connected to the cleaning tank oil sludge incoming material tank (11).

3. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 2, characterized in that, The grating plate (12) is inclined inside the sludge receiving tank (11) to form a slope with a slope of 10%, so that the filtered debris can roll down the slope to the debris collection trough (14).

4. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 1, characterized in that, The pipeline filtration mechanism (2) includes two filter components (21) arranged in parallel. The inlet (211) of the two filter components (21) is connected to the outlet of the incoming material filtration mechanism (1) through the sludge pipeline, and the outlet (212) is connected to the inlet of the skid-mounted cleaning tank sludge reduction system (3) through the sludge pipeline.

5. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 4, characterized in that, The pipeline filtration mechanism (2) also includes a controller (22). An electric ball valve (23) is provided on the sludge pipeline connected to the inlet (211) of the two filter components (21). A flow sensor (24) is provided on the sludge pipeline connected to the outlet (212) of the two filter components (21). The electric ball valve (23) and the flow sensor (24) are respectively connected to the controller (22).

6. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 4, characterized in that, The filter assembly (21) includes a housing (213), a filter grid basket (214), and a drain outlet (215). The feed inlet (211) and the discharge outlet (212) are connected to the outer wall of the housing (213), communicate with the housing (213), and are symmetrically arranged. The filter grid basket (214) is installed at the center inside the housing (213), and the drain outlet (215) is located at the bottom of the housing (213) and communicates with the housing (213).

7. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 6, characterized in that, The filter grid basket (214) is a cylinder with a hollow structure and a cross-section at the top. The foot of the cross-section is close to the feed inlet (211) and 50mm-100mm lower than the feed inlet (211), and the top of the cross-section is close to the discharge outlet (212) and 50mm-100mm higher than the feed inlet (211).

8. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 6, characterized in that, The filter assembly (21) also includes an upper cover (216) and a ring (217). The bottom of the ring (217) is connected to the top of the housing (213). A sealing ring (219) and the upper cover (216) are arranged in sequence on the top. The upper cover (216) and the ring (217) are connected by bolts. The inner diameter of the ring (217) is larger than the diameter of the filter grid basket (214).

9. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 8, characterized in that, The filter assembly (21) also includes a support rod (218). The inner wall of the ring (217) is fixedly connected with symmetrical pads (2171). The two ends of the support rod (218) are placed on the corresponding pads (2171). Each pad (2171) is connected to one end of a fixing strap (2181). The other end of the fixing strap (2181) is detachably connected to the pad (2171) through a buckle (2182) to realize the removal or fixing of the support rod (218) on the pad (2171).

10. The device for preventing pipe blockage in the skid-mounted sludge reduction system according to claim 9, characterized in that, The filter assembly (21) also includes a handle (210), which is a U-shaped structure. The bottom of the U-shaped structure is connected to the support rod (218), and the top is detachably connected to both sides of the filter grid basket (214).

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