Water removal filter

Abstract

The invention relates to a water removal filter, relates to the technical field of petroleum product sample treatment equipment, and is used for solving the problem that an existing oil-water separation device is poor in water removal effect. The water removal filter comprises a shell and a filter element, wherein the filter element is made of # imgabs0 # high-function plastic with water resistance and a filtering function. Compared with the prior art, the filter element is made of # imgabs 1 # high-function plastic, so that the filter element has a filtering function and water resistance, the problem that an existing water removal device is poor in water removal effect is solved, the reliability of an instrument is improved, the service cycle of instrument consumables is prolonged, the use cost is saved, and the maintenance workload can be reduced. The filter adopts a three-way structure design, the filter is provided with an inlet for a sample to enter and two sample outlets, one outlet is a quick outlet and is designed into a straight-through structure, and the self-cleaning function is realized while the flowing of the sample is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum product sample processing equipment, in particular to a water removal filter. Background Art

[0002] The diesel hydrotreating unit uses an online analyzer for online analysis, and the sample needs to be dehydrated and impurities removed before entering the online analyzer. The existing solution is to remove impurities through a filter and remove water through an oil-water separator; the problem is that the impurities after filtration are retained in the filtration system, thereby affecting the filtration speed or even blocking it; and the existing oil-water separator has a poor dehydration effect, which affects the reliability of the instrument, reduces the service life of the instrument consumables, and increases the use cost and maintenance workload. Summary of the invention

[0003] The invention provides a water removal filter for solving the problem of poor water removal effect of the existing oil-water separation device.

[0004] The invention provides a water removal filter, comprising a shell and a filter element. The filter element is installed in the shell and is made of high-functional plastic with water resistance and filtering function.

[0005] In one embodiment, the high-performance plastic is produced by Saint-Gobain 641 high-performance plastic.

[0006] In one embodiment, the shell has an installation cavity and an inlet, a quick outlet and a filtrate outlet connected to the installation cavity; the filter element has a first chamber, and both ends of the first chamber are respectively connected to the inlet and the quick outlet; a second chamber is formed between the filter element and the shell, and the second chamber is connected to the filtrate outlet.

[0007] In one embodiment, the first chamber is a columnar chamber, and two ends of the columnar chamber are respectively connected to the inlet and the quick outlet.

[0008] In one embodiment, the surface roughness of the inner wall of the first chamber is no greater than 3.2 μm.

[0009] In one embodiment, the shell includes a tube body, the filtrate outlet is arranged on the side wall of the tube body, one end of the tube body is threadedly connected to an upper pressure cover, and the other end is threadedly connected to a clamping nut and a lower pressure cover, the upper pressure cover is provided with the inlet, and the lower pressure cover is provided with the quick outlet; the filter element is clamped and fixed in the tube body by the upper pressure cover and the clamping nut.

[0010] In one embodiment, the upper pressure cover and the filter element are sealed by a sealing gasket and a sealing washer; the clamping nut and the filter element are sealed by a sealing gasket, and the clamping nut and the lower pressure cover are sealed by a sealing gasket.

[0011] In one embodiment, the shell includes a shell body and an end cover; the inlet is arranged at one end of the shell body, the mounting cavity is arranged in the shell body, the connection between the inlet and the mounting cavity forms a step surface, and one end of the filter element abuts against the step surface; the end cover is fixedly installed at the other end of the shell body, and the quick outlet is arranged on the end cover; a threaded clamping gasket is arranged between the filter element and the end cover, and the outer wall of the threaded clamping gasket is threadedly connected to the inner wall of the mounting cavity and clamps the other end of the filter element.

[0012] In one embodiment, the step surface and the filter element, the threaded compression gasket and the filter element, and the end cover and the main body are sealed by sealing gaskets.

[0013] In one embodiment, the sealing gasket is a tetrafluoroethylene gasket.

[0014] Compared with the prior art, the invention has the advantage that the filter element adopts the Saint-Gobain filter produced by the company with water resistance and filtering function. Made of 641 high-function plastic, it ensures that in addition to the filtering function, it also has water resistance, solves the problem of poor water removal effect of existing water removal devices, greatly improves the reliability of the instrument, increases the service life of instrument consumables, reduces the frequency of consumable replacement, saves use costs, and reduces maintenance workload. The filter adopts a three-way structure design. The filter has an inlet for sample entry and two sample outlets. One of the outlets is a fast outlet, designed as a straight-through structure, which ensures the flow of samples while realizing the self-cleaning function. The other outlet is the filtrate outlet of the sample after filtering and dehydration. The sample that needs to enter the analyzer (such as Fourier transform near-infrared analyzer) flows out from this filtrate outlet. The water removal filter can be used not only for oil-water separation, but also for gas-water separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0016] Figure 1 is a schematic structural diagram of a water removal filter in one embodiment of the present invention;

[0017] Figure 2 It is an exploded view of a water removal filter in another embodiment of the present invention.

[0018] Reference numerals:

[0019] 1. Shell; 2. Filter element; 3. Inlet; 4. Quick outlet; 5. Filtrate outlet; 6. First chamber; 7. Second chamber; 8. Tube body; 9. Upper pressure cover; 10. Lower pressure cover; 11. Compression nut; 12. Sealing gasket; 13. Sealing gasket; 14. Shell body; 15. Threaded compression gasket; 16. End cover; 17. Teflon gasket. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] like Figure 1 , Figure 2 As shown, the present invention provides a water removal filter including a housing 1 and a filter element 2, the filter element 2 is installed in the housing 1, and the filter element 2 is made of the brand of Saint-Gobain Made of 641 high-performance plastic, 641 is an FDA-certified material (file number: MAF-228), which has filtering function and water barrier properties. The performance parameters of 641 are shown in Table 1. The filter element 2 can be used not only for oil-water separation, but also for gas-water separation.

[0022] In order to make the filter have a self-cleaning function, the filter adopts a three-way structure design. The housing 1 has an installation cavity and an inlet 3 connected to the installation cavity, and two outlets, namely a quick outlet 4 and a filtrate outlet 5. The filter element 2 has a first chamber 6, and the two ends of the first chamber 6 are respectively connected to the inlet 3 and the quick outlet 4. A second chamber 7 is formed between the filter element 2 and the housing 1, and the second chamber 7 is connected to the filtrate outlet 5. The quick outlet 4 is connected to the inlet 3 through the first chamber 6, which ensures the flow of the fluid while realizing the self-cleaning function of the filter. The filtrate outlet 5 is the outlet of the fluid after filtering and removing water from the filter element 2. When used in conjunction with an online analyzer, the sample entering the analyzer flows out from the filtrate outlet 5. Further preferably, the filter element 2 adopts a straight-cylindrical filter element 2, and the straight-cylindrical filter element 2 has a columnar first chamber 6. The straight-cylindrical filter element 2 has a small resistance, which is conducive to the flow of fluid and improves the self-cleaning effect. The smoothness of the inner wall of the first chamber 6 of the filter element 2 will affect the adhesion of particles on the inner wall. Preferably, the surface roughness of the inner wall of the first chamber 6 is not higher than 3.2 μm. This can effectively ensure that the filtered particles will not adhere to the inner wall of the first chamber 6 of the filter element 2, and the particles can be easily carried away by the flowing sample, thereby ensuring the reliability of the self-cleaning of the filter.

[0023] Table 1: Performance parameters of 641

[0024]

[0025] The data in brackets in Table 1 are metric data.

[0026] In some embodiments, Figure 1 As shown, the housing 1 includes a housing body 14 , a threaded compression gasket 15 and an end cover 16 .

[0027] The inlet 3 is arranged at one end of the shell body 14, and the installation cavity is arranged in the shell body 14. The diameter of the installation cavity is larger than the diameter of the inlet 3, and a step surface is formed at the connection between the inlet 3 and the installation cavity. The filtrate outlet 5 is arranged on the side wall of the shell body 14, and the filtrate outlet 5 is connected with the installation cavity. At the other end of the shell body 14, the inner wall of the installation cavity is provided with an internal thread, and the outer wall of the shell body 14 is provided with an external thread.

[0028] A through hole is provided on the threaded compression gasket 15, and an external thread matching the internal thread of the shell body 14 is provided on the outer wall of the threaded compression gasket 15. The threaded compression gasket 15 is installed in the installation cavity, and the outer wall of the threaded compression gasket 15 is connected to the inner wall of the installation cavity by threads. A stepped through hole is provided on the end cap 16, and the small hole section of the stepped through hole is the quick outlet of the filter, and the inner wall of the large hole section of the stepped through hole is provided with an internal thread matching the external thread on the outer wall of the shell body 14. The end cap 16 covers the other end of the shell body 14, and the inner wall of the end cap 16 is connected to the outer wall of the shell 1 by threads.

[0029] The filter element 2 adopts a straight-cylindrical filter element 2, which has a cylindrical first chamber 6, and the first chamber 6 has two upper and lower ports. The filter element 2 is arranged in the installation cavity, and a gap is left between the filter element 2 and the side wall of the tube body 8 to form a second chamber 7, and the filtrate outlet 5 is directly connected to the second chamber 7. One end of the filter element 2 abuts against the step surface in the shell body 14, and the inlet 3 on the shell body 14 is connected to the first chamber 6 of the filter element 2 through the upper port. The other end of the filter element 2 is pressed and fixed in the installation cavity by a threaded compression gasket 15, and the through hole on the threaded compression gasket 15 is connected to the first chamber 6 of the filter element 2 through the lower port, and the small hole section of the stepped through hole on the end cover 16 is connected to the first chamber 6 through the through hole on the threaded compression gasket 15, and the small hole section is the quick outlet 4 of the filter. In order to facilitate connection with external pipelines, the inlet 3, quick outlet 4 and filtrate outlet 5 of the filter are all provided with internal threads.

[0030] In order to improve the sealing performance of the filter, the step surface of the housing body 14 and the filter element 2, the threaded compression gasket 15 and the filter element 2, and the end cover 16 and the housing body 14 are all sealed by sealing members. The sealing member is a sealing gasket, and the sealing gasket is preferably a tetrafluoroethylene gasket 17.

[0031] In other embodiments, Figure 2 As shown, the housing 1 includes a tube body 8, an upper gland 9, a lower gland 10 and a locking nut 11.

[0032] The tube body 8 is a straight tube, and the cylindrical cavity running through the upper and lower ends of the straight tube is the installation cavity; the inner walls of both ends of the straight tube are provided with internal threads. The filtrate outlet 5 is provided on the side wall of the tube body 8, and the filtrate outlet 5 is connected to the installation cavity.

[0033] The outer sides of the upper gland 9, the lower gland 10 and the clamping nut 11 are all provided with external threads, and the middle parts of the upper gland 9, the lower gland 10 and the clamping nut 11 are all provided with through holes penetrating the upper and lower ends thereof. The upper gland 9 is connected to one end of the tube body 8 by threads, and the clamping nut 11 and the lower gland 10 are connected to the other end of the tube body 8 by threads, and the upper gland 9 and the lower gland 10 are respectively located on both sides of the clamping nut 11.

[0034] The filter element 2 adopts a straight-cylindrical filter element 2, which has a cylindrical first chamber 6. The first chamber 6 has two upper and lower ports. The two ends of the filter element 2 are respectively fixed in the installation cavity of the tube body 8 by the upper gland 9 and the clamping nut 11. A gap is left between the filter element 2 and the side wall of the tube body 8 to form a second chamber 7, and the filtrate outlet 5 is directly connected to the second chamber 7. The through hole on the upper gland 9 is connected to the first chamber 6 of the filter element 2 through the upper port, and the through hole is the inlet 3 of the filter; the through hole on the clamping nut 11 is connected to the first chamber 6 of the filter element 2 through the lower port, and the through hole on the lower gland 10 is connected to the first chamber 6 through the through hole on the clamping nut 11, and the through hole on the lower gland 10 is the quick outlet 4 of the filter. The inlet 3, quick outlet 4 and filtrate outlet 5 of the filter are all provided with internal threads to facilitate connection with external pipelines.

[0035] In order to improve the sealing performance of the filter, the upper gland 9 and the filter element 2, the clamping nut 11 and the filter element 2, and the clamping nut 11 and the lower gland 10 are sealed by sealing members. Specifically, the upper gland 9 and the filter element 2 are sealed by a sealing gasket 12 and a sealing gasket 13; the clamping nut 11 and the filter element 2 are sealed by a sealing gasket 12, and the clamping nut 11 and the lower gland 10 are sealed by a sealing gasket 13.

[0036] The water removal filter of the present invention can be used for oil-water separation and gas-water separation.

[0037] For example, the water removal filter of the present invention performs water removal filtration on refined diesel, and detects the water content of refined diesel before and after filtration. The water content is determined by the SH / T0246-1992 (2004) method for determining the water content in light petroleum products. The water content of the oil product before the filter is 152.5 mg / kg (ppmw), and the water content of the oil product after the filter is 104.7 mg / kg (ppmw), and the water content is significantly reduced. It can be seen that the water removal filter of the present invention can effectively remove water from the oil product, and the water removal effect is good. Before the oil sample enters the online instrument, it is first passed through the water removal filter to remove impurities and water, which can effectively increase the service life of the instrument consumables, reduce the frequency of consumables replacement, save use costs, and reduce maintenance workload.

[0038] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A water removal filter, characterized in that: The utility model comprises a shell and a filter element. The filter element is installed in the shell and is made of high-functional plastic with water resistance and filtering function.

2. The water removal filter according to claim 1, characterized in that: The high-performance plastic is produced by Saint-Gobain 641 high-performance plastic.

3. The water removal filter according to claim 1 or 2, characterized in that: The shell has an installation cavity and an inlet, a quick outlet and a filtrate outlet connected to the installation cavity; the filter element has a first chamber, and the two ends of the first chamber are respectively connected to the inlet and the quick outlet; a second chamber is formed between the filter element and the shell, and the second chamber is connected to the filtrate outlet.

4. The water removal filter according to claim 3, characterized in that: The first chamber is a columnar chamber, and two ends of the columnar chamber are respectively connected to the inlet and the quick outlet.

5. The water removal filter according to claim 3, characterized in that: The surface roughness of the inner wall of the first chamber is not higher than 3.2 μm.

6. The water removal filter according to claim 3, characterized in that: The shell includes a tube body, the filtrate outlet is arranged on the side wall of the tube body, one end of the tube body is connected to an upper pressure cover by a thread, and the other end is connected to a clamping nut and a lower pressure cover by a thread, the upper pressure cover is provided with the inlet, and the lower pressure cover is provided with the quick outlet; the filter element is clamped and fixed in the tube body by the upper pressure cover and the clamping nut.

7. The water removal filter according to claim 6, characterized in that: The upper pressure cover and the filter element are sealed by a sealing gasket and a sealing washer; the clamping nut and the filter element are sealed by a sealing gasket, and the clamping nut and the lower pressure cover are sealed by a sealing gasket.

8. The water removal filter according to claim 3, characterized in that: The shell includes a shell body and an end cover; the inlet is arranged at one end of the shell body, the installation cavity is arranged in the shell body, the connection between the inlet and the installation cavity forms a step surface, and one end of the filter element abuts against the step surface; the end cover is fixedly installed at the other end of the shell body, and the quick outlet is arranged on the end cover; a threaded clamping gasket is arranged between the filter element and the end cover, and the outer wall of the threaded clamping gasket is threadedly connected to the inner wall of the installation cavity and clamps the other end of the filter element.

9. The water removal filter according to claim 8, characterized in that: The step surface and the filter element, the threaded compression gasket and the filter element, and the end cover and the main body are all sealed by sealing gaskets.

10. The water removal filter according to claim 9, characterized in that: The sealing gasket is a tetrafluoroethylene gasket.

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