Fine filter used in high-temperature and ultrahigh-pressure closed environment

Abstract

The utility model belongs to the field of ultrahigh-pressure environment filtration, and particularly discloses a fine filter used in a high-temperature and ultrahigh-pressure closed environment, which comprises a shell, a connecting flange and a filter element, a liquid passing cavity is formed in the shell, a connecting pipe is arranged at the front end of the liquid passing cavity, a first threaded groove is formed in the inner side of the rear end of the shell on the periphery of the liquid passing cavity, the front end of the connecting flange is in threaded connection with the first threaded groove, and a second inclined groove is formed in the surface of the rear end of the shell on the periphery of the connecting flange. The connecting flange and the shell are subjected to laser welding; the shell and the filter element are connected together through the connecting flange, the compressive strength of the device is greatly improved through a double-connection fixing mode of laser welding after threaded connection, various different liquid flowing media can be filtered in a high-temperature and ultrahigh-pressure closed environment, and the purpose of effectively protecting downstream equipment and end equipment is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of ultrahigh pressure environment filtration, more particularly to a kind of fine filter used in high temperature and ultrahigh pressure closed environment. BACKGROUND

[0002] Fine filter is the equipment for filtering small particles and impurities in liquid or gas, usually used in industry, laboratory or other occasions requiring high purity fluid;

[0003] The mainstream product in market is the filtering product under normal temperature and pressure or low pressure environment, usually only simple screw thread connection mode is used, and the pressure resistance is insufficient, cannot be applied in high temperature ultrahigh pressure place and environment with fine filtering requirement, for example: the high-pressure common rail diesel engine in long-term work, high-pressure oil pump will produce impurities in work, and the generated impurities cannot be filtered, which will cause the blockage of downstream rail pipe and precision fuel nozzle, thereby causing engine damage;

[0004] Therefore, in order to solve the filtering demand in high temperature ultrahigh pressure environment, effectively protect the end precision equipment to avoid major loss and develop this fine filter. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of fine filter used in high temperature and ultrahigh pressure closed environment, to solve the problem that traditional fine filter cannot meet the filtering demand in high temperature ultrahigh pressure environment raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A kind of fine filter used in high temperature and ultrahigh pressure closed environment, including shell, connecting flange and filter core;The inside of the shell is provided with liquid passage, the front end of the liquid passage is provided with connecting pipe, the inside of the rear end of the shell periphery of the liquid passage is provided with thread groove one, the front end of the connecting flange is threadedly connected with thread groove one, the rear end surface of the shell periphery of the connecting flange is provided with inclined groove two, for laser welding of connecting flange and shell, the inside of the connecting flange is provided with liquid outlet chamber, the front end of the connecting flange periphery of the liquid outlet chamber is provided with thread groove two, the filter core is located in liquid passage, the rear end of the filter core is provided with liquid outlet nozzle, and the liquid outlet nozzle is threadedly connected with thread groove two.

[0008] Preferably, the filter core is made of spherical powder high-temperature sintering, and the connecting flange is provided in T shape with thick front end and thin rear end.

[0009] Preferably, the inner diameter of the liquid outlet chamber is consistent with the inner diameter of the liquid outlet nozzle and the connecting pipe, and the outer diameter of the rear end of the connecting flange is adapted to the liquid passage.

[0010] Preferably, the connecting flange rear end outer surface and the connecting pipe are provided with connecting threads, which are used for the threaded connection of the connecting flange and the shell with external pipelines, and the outer surfaces of the two ends of the shell are provided with inclined grooves one, which are used for the laser welding of the shell with external pipelines.

[0011] Preferably, the liquid outlet cavity is provided with a protective filter screen.

[0012] Preferably, the shell is provided in an elliptical shape, and the two side surfaces of the shell are provided with auxiliary planes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a filter device, which comprises a shell and a filter core capable of normal filtering work in a high-temperature and super-high-pressure environment, and the shell and the filter core are connected together through a connecting flange. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to the drawings without paying creative labor.

[0016] Figure 1 It is the whole structure schematic diagram of the utility model;

[0017] Figure 2 It is the internal structure schematic diagram of the utility model;

[0018] Figure 3 It is the internal structure schematic diagram of the utility model in the unfolded state.

[0019] In the drawing: 1, shell;2, connecting flange;201, protective filter screen;3, connecting pipe;4, inclined groove one;5, auxiliary plane;6, filter core;7, inclined groove two;8, liquid outlet nozzle;9, thread groove one;10, liquid passage cavity;11, liquid outlet cavity;12, thread groove two. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model will be described in detail in combination with the drawings of the specification.

[0021] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other embodiments that can not be described in detail herein, and the present application is not limited to the embodiments described herein. Indeed, the present application can be practiced according to other embodiments that can not be described in detail herein.

[0022] Secondly, the "one embodiment" or "embodiment" referred to herein can include specific features, structures or characteristics contained in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0023] As shown in the accompanying drawings Figure 1 , 2 and the accompanying drawings Figure 3 :

[0024] Embodiment one: the embodiment provides a kind of high temperature and superhigh pressure closed environment used fine filter, including shell 1, connecting flange 2 and filter core 6;The inside of shell 1 is provided with liquid passage cavity 10, the front end of liquid passage cavity 10 is provided with connecting pipe 3, the rear end inside of the shell 1 of the periphery of liquid passage cavity 10 is provided with thread groove one 9, the front end of connecting flange 2 is threadedly connected with thread groove one 9, the rear end surface of the shell 1 of the periphery of connecting flange 2 is provided with inclined groove two 7, for connecting flange 2 and shell 1 laser welding, connecting flange 2 is provided with liquid outlet chamber 11, the front end of the periphery of connecting flange 2 of liquid outlet chamber 11 is provided with thread groove two 12, filter core 6 is located in liquid passage cavity 10, the rear end of filter core 6 is provided with liquid outlet nozzle 8, liquid outlet nozzle 8 is threadedly connected with thread groove two 12.

[0025] The application is composed of shell 1 and filter core 6 that can normally filter under high temperature and superhigh pressure environment, connecting flange 2 is used to connect shell 1 and filter core 6 together, can filter various different liquid flowing medium in high temperature and superhigh pressure closed environment, connecting pipe 3 and connecting flange 2 are used to connect the device in the middle of high pressure pump and track pipe, impurities generated by high pressure pump are intercepted, the purpose of effectively protecting downstream equipment and end equipment is achieved;

[0026] When installing and using, connecting flange 2 and filter core 6 are threadedly connected together through thread groove two 12 and liquid outlet nozzle 8, then connecting flange 2 and shell 1 are threadedly connected together through thread groove one 9, the contact area and friction resistance of shell 1 and connecting flange 2 are greatly increased through thread groove one 9, then shell 1 and connecting flange 2 are laser welded through inclined groove two 7, completely fixed, the compression strength of the device is improved, the situation that the device is damaged due to high pressure impact force of medium is avoided, the use in high temperature and superhigh pressure environment is met.

[0027] Specifically, the filter core 6 is made of spherical powder high-temperature sintering, and the connecting flange 2 is provided in a T shape with a thick front end and a thin rear end.

[0028] The shell 1 is made of stainless steel, and the spherical powder is made of stainless steel spherical powder.

[0029] The filter core 6 is made of stainless steel spherical powder high-temperature sintering, has high filtration precision, stable porosity, and will not change the pore size with pressure change, so that it can work normally in a high-temperature and high-pressure sealed environment, effectively remove suspended solids and particles, and has good purification effect; and because it is completely composed of spherical powder, has high porosity, uniform and smooth pore size, small initial resistance, easy to blowback regeneration, and long service life; at the same time, has high mechanical strength, good rigidity and plasticity, can be directly welded, bonded or other mechanical processing methods to be fixed on the connecting flange 2, simple to install and use, and convenient to maintain.

[0030] Specifically, the inner diameter of the liquid outlet cavity 11 is consistent with the inner diameters of the liquid outlet nozzle 8 and the connecting pipe 3, and the outer diameter of the rear end of the connecting flange 2 is adapted to the through liquid cavity 10.

[0031] By adapting the outer diameter of the rear end of the connecting flange 2 to the through liquid cavity 10, the inner diameter of the external pipeline connected with the connecting flange 2 is also adapted to the through liquid cavity 10, and the inner diameter of the liquid outlet cavity 11 is consistent with the inner diameters of the liquid outlet nozzle 8 and the connecting pipe 3, to ensure smooth flow of the fluid at the connection, avoid flow resistance and turbulence caused by inconsistent inner diameters; this helps to reduce pressure loss, improve the efficiency of medium transportation, reduce vortex and turbulence at the connection and stress concentration, reduce energy loss, ensure the sealing performance of the device, prolong the service life of the pipeline and the flange, and reduce the risk of damage caused by stress concentration.

[0032] As shown in Figs. 1 and 2, the shell 1 is connected with the connecting flange 2 through the connecting pipe 3, and the connecting flange 2 is connected with the external pipeline through the connecting pipe 3. Figure 1 As shown in Figs. 3 and 4, the shell 1 is connected with the connecting flange 2 through the connecting pipe 3, and the connecting flange 2 is connected with the external pipeline through the connecting pipe 3. Figure 3 As shown in Figs. 5 and 6, the shell 1 is connected with the connecting flange 2 through the connecting pipe 3, and the connecting flange 2 is connected with the external pipeline through the connecting pipe 3.

[0033] Embodiment Two: This embodiment is basically the same as the previous embodiment, except that the rear end surface of the connecting flange 2 and the connecting pipe 3 are both provided with connecting threads for thread connection of the connecting flange 2 and the shell 1 with the external pipeline, and the outer surfaces of both ends of the shell 1 are provided with inclined grooves one 4 for laser welding of the shell 1 and the external pipeline.

[0034] The shell 1 is connected with the external pipeline through the connecting threads on the connecting pipe 3, and the shell 1 is connected with the connecting flange 2 through the connecting threads on the connecting flange 2, and then connected with the external pipeline at the other end through the connecting threads on the connecting flange 2. After preliminary connection, the shell 1 and the external pipeline are laser welded together through the inclined grooves one 4, completely fixed, and the pressure resistance of the device is improved.

[0035] Specifically, a protective filter screen 201 is arranged in the liquid outlet cavity 11.

[0036] The protective filter screen 201 is used to protect the filter element 6, so as to avoid the situation that the filter element 6 is damaged by the articles entering the filter element 6 through the liquid outlet cavity 11.

[0037] Specifically, the shell 1 is arranged in an oval shape, and the two side surfaces of the shell 1 are provided with auxiliary planes 5.

[0038] By arranging the auxiliary planes 5 on the shell 1, it is convenient for the workers to use a wrench to clamp the shell 1 to install the device.

[0039] Importantly, it should be noted that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.

[0040] In addition, for the purpose of providing a concise description of exemplary embodiments, all features can not have been described (i.e., those contributing to the

[0041] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A fine filter for use in a high-temperature and super-high-pressure closed environment, characterized by: The filter includes a shell (1), a connecting flange (2) and a filter core (6); The inside of the shell (1) is provided with a liquid passing cavity (10), the front end of the liquid passing cavity (10) is provided with a connecting pipe (3), the rear end inside of the shell (1) at the periphery of the liquid passing cavity (10) is provided with a thread groove one (9), the front end of the connecting flange (2) is threadedly connected with the thread groove one (9), the rear end surface of the shell (1) at the periphery of the connecting flange (2) is provided with an inclined groove two (7) for laser welding of the connecting flange (2) and the shell (1), the connecting flange (2) is internally provided with a liquid outlet cavity (11), the front end of the connecting flange (2) at the periphery of the liquid outlet cavity (11) is provided with a thread groove two (12), the filter core (6) is located in the liquid passing cavity (10), the rear end of the filter core (6) is provided with a liquid outlet nozzle (8), the liquid outlet nozzle (8) is threadedly connected with the thread groove two (12).

2. The filter according to claim 1, wherein: The filter core (6) is made of spherical powder high-temperature sintering, and the connecting flange (2) is provided in a T shape with a thick front end and a thin rear end.

3. The filter according to claim 1, wherein: The inner diameter of the liquid outlet cavity (11) is consistent with the inner diameters of the liquid outlet nozzle (8) and the connecting pipe (3), and the outer diameter of the rear end of the connecting flange (2) is adapted to the liquid passing cavity (10).

4. The filter according to claim 1, wherein: The rear end outer surface of the connecting flange (2) and the connecting pipe (3) are both provided with connecting threads for threadedly connecting the connecting flange (2) and the shell (1) with external pipelines, and the outer surfaces of both ends of the shell (1) are provided with inclined grooves one (4) for laser welding of the shell (1) and external pipelines.

5. The filter according to claim 1, wherein: The liquid outlet cavity (11) is internally provided with a protective filter screen (201).

6. The filter according to claim 1, wherein: The shell (1) is provided in an oval shape, and the two side surfaces of the shell (1) are provided with auxiliary planes (5).

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