Horizontal gas filter with vertical heating function

Abstract

The utility model discloses a horizontal gas filter with vertical heating function, the shell is equal cross section pressure vessel along horizontal direction extension, one end has the half ellipsoidal head, the lateral wall of shell middle part is equipped with the air inlet that protrudes outward, is equipped with the air outlet at the head, the lateral wall of shell is located air inlet and air outlet and is equipped with heating device installation mouth, the length direction of air inlet and heating device installation mouth all is perpendicular with the length direction of shell, the position of shell in is equipped with filter assembly corresponding air inlet, heating device installation mouth sets up heating device, heating device includes the anti -explosion heating pipe that is gathered by the metal tubular electric heating element of many U -shaped or straight stick shape, and sets up the wiring cavity and anti -explosion junction box in the one end of anti -explosion heating pipe, the one end of anti -explosion heating pipe is inserted heating device installation mouth to the inner wall of close -fitting shell away from wiring cavity and anti -explosion junction box. The utility model realizes the compact, efficient and reliable cooperation of filtering and heating function in single equipment.

Description

Technical Field

[0001] This utility model relates to the field of gas filter technology, and in particular to a horizontal gas filter with vertical heating function. Background Technology

[0002] In the gas supply sector, gas typically needs to be filtered to remove impurities before being heated according to process requirements. Currently, the mainstream technology uses a separate "filter + heater" system. The filter is usually a separate horizontal housing with an internal filter element; impurities are separated as the gas passes through the filter. The heater is a separate device, often electrically heated, and connected to the filter via external piping.

[0003] This separate design has significant drawbacks: First, the two independent devices occupy a large space, requiring numerous pipes and valves for installation, leading to system complexity, high costs, and increased potential leak points. Second, the flow of gas through the connecting pipes causes heat loss, reducing overall energy efficiency. The root cause of these problems lies in the separation of the filtration and heating modules, without effective integration.

[0004] In existing technologies, the gas filter and heater are separate units, which presents the following prominent problems:

[0005] 1. The equipment layout is scattered, occupies a large space, has complex pipeline connections, and has high installation and maintenance costs;

[0006] Second, the heat loss is severe when gas is transported between independent equipment rooms, resulting in low overall energy efficiency;

[0007] Third, the increased number of external interfaces increases the risk of gas leaks.

[0008] Therefore, how to integrate the vertical heating device into the horizontal filter housing to solve the comprehensive problems of large equipment space occupation, low thermal efficiency, high leakage risk and high system cost, and to achieve compact, efficient and reliable synergy of filtration and heating functions in a single device has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0009] In view of the above-mentioned defects of the prior art, the present invention provides a horizontal gas filter with vertical heating function. The purpose is to integrate the vertical heating device into the housing of the horizontal filter, thereby solving the comprehensive problems of large equipment space occupation, low thermal efficiency, high leakage risk and high system cost, and realizing the compact, efficient and reliable synergy of filtration and heating functions in a single device.

[0010] To achieve the above objectives, this utility model discloses a horizontal gas filter with vertical heating function, including a housing and a heating device;

[0011] The shell is a pressure vessel with a constant cross-section that extends horizontally, and one end has a semi-ellipsoidal head.

[0012] An air inlet is provided on the side wall in the middle of the housing, and an air outlet is provided on the end cap;

[0013] The housing has heating device mounting ports on the side walls of the air inlet and the air outlet;

[0014] The length directions of the air inlet and the heating device mounting port are both perpendicular to the length direction of the housing.

[0015] A filter assembly is provided inside the housing at the position corresponding to the air inlet;

[0016] The heating device is installed at the heating device mounting port;

[0017] The heating device includes an explosion-proof heating tube composed of multiple U-shaped or straight rod-shaped metal tubular electric heating elements bundled together, and a wiring cavity and an explosion-proof junction box disposed at one end of the explosion-proof heating tube.

[0018] The end of the explosion-proof heating tube away from the wiring cavity and the explosion-proof junction box is inserted into the heating device mounting port until it is tightly attached to the inner wall of the housing;

[0019] The wiring cavity and the explosion-proof junction box integrate a power supply and control device, and the part connected to the explosion-proof heating tube connects the lead wire of the explosion-proof heating tube to an external power cable.

[0020] Preferably, the air inlet, the air outlet, and the heating device mounting port are all provided with flanges, which are respectively connected to and fixed to the air inlet pipe, the air outlet pipe, and the heating device.

[0021] Preferably, the end of the housing away from the end cap is an open structure;

[0022] Furthermore, the inner diameter of the opening structure is larger than the inner diameter of the rest of the cavity in the housing;

[0023] The opening structure is equipped with a removable blind plate.

[0024] Preferably, the filter assembly is a cylindrical filter element, including a filter element skeleton made of stainless steel perforated tube, and a polyester fiber or glass fiber filter felt wrapped around the filter element skeleton. The filter element support, which is fixed to the filter element skeleton and extends from the polyester fiber or glass fiber filter felt, is fixed inside the housing at the position corresponding to the air inlet.

[0025] Preferably, the explosion-proof heating tube is fixed inside a heating tube fixing flange, and is fixed to the heating device mounting port through the heating tube fixing flange.

[0026] Preferably, inside the housing, a fixed baffle with a flow channel for gas combustion is provided between the heating device and the gas outlet as a flow guiding structure.

[0027] The beneficial effects of this utility model are:

[0028] This invention breaks through the limitations of separate filtration and heating in traditional gas treatment systems, achieving integrated gas filtration and heating functions within a single horizontal housing. This is specifically reflected in the following three aspects:

[0029] 1. Spatial layout and structural integration;

[0030] This invention adopts an integrated structure combining a vertically inserted heating device with a horizontally arranged filter chamber. The heating device (especially its core heating component) is vertically inserted into the top of the horizontal filter housing, allowing the heating element to be directly immersed in the filtered gas flow channel. This layout achieves a high degree of physical integration between two independent functional modules, sharing a single pressure-bearing housing, a set of connection openings, and a set of gas path interfaces. Compared to the traditional separate design of "filter + external heater + connecting pipeline," this solution completely eliminates intermediate connecting pipes, additional support structures, and a separate heater housing, fundamentally simplifying and compacting the equipment structure.

[0031] 2. Thermal energy utilization and flow field optimization;

[0032] This invention achieves active guidance and optimization of the gas flow field through a built-in "fixed baffle." This baffle, arranged around the heating element, forms a meandering or deflecting channel. Its function is to forcibly guide the filtered gas to flow around the heating tube along a specific path, effectively extending the residence time of the gas in the high-temperature region and preventing the gas from "short-circuiting." This design solves the technical problems of uneven heating, localized overheating, or low heat exchange efficiency that may occur after integration, ensuring uniform and efficient heating. This makes the integrated design perform no worse than, and even better than, a split-type system.

[0033] 3. Functional coordination and system reliability;

[0034] This invention achieves a new functional synergy model: the filtered clean gas directly enters the heating stage, avoiding secondary pollution and heat loss during transportation. Simultaneously, the heating process is completed within the sealed filter housing, reducing potential leakage points caused by multiple flanges and joints, and improving the sealing safety and operational reliability of the entire gas supply system. Furthermore, the integrated design requires only one installation foundation and one maintenance access point, significantly reducing installation complexity, material costs, and long-term operation and maintenance costs.

[0035] In summary, this utility model provides a novel gas treatment device that is compact, has high thermal efficiency, is safe and economical, and is easy to maintain by organically combining three major design features: "vertical plug-in heating", "built-in flow field guidance" and "common shell integration". It effectively solves the technical problems inherent in split-type equipment, such as large footprint, high energy consumption, complex connection and high cost.

[0036] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model. Attached Figure Description

[0037] Figure 1 A schematic diagram of an embodiment of the present invention is shown.

[0038] Figure 2 An embodiment of the present invention is shown. Figure 1 Schematic diagram of the cross-sectional structure along the AA direction Detailed Implementation

[0039] Example: Figure 1 and Figure 2 As shown, a horizontal gas filter with vertical heating function includes a housing 1 and a heating device 3;

[0040] The shell 1 is a pressure vessel with a uniform cross-section that extends horizontally, and has a semi-ellipsoidal head at one end;

[0041] An air inlet 6 is provided on the side wall in the middle of the housing 1, and an air outlet 7 is provided on the end cap;

[0042] The housing 1 has a heating device mounting port 11 on the side wall of the air inlet 6 and the air outlet 7;

[0043] The length directions of the air inlet 6 and the heating device mounting port 11 are both perpendicular to the length direction of the housing 1.

[0044] A filter assembly 2 is provided inside the housing 1 at the position corresponding to the air inlet 6;

[0045] Heating device 3 is installed at heating device mounting port 11;

[0046] The heating device 3 includes an explosion-proof heating tube 5 composed of multiple U-shaped or straight rod-shaped metal tubular electric heating elements bundled together, and a wiring cavity and an explosion-proof junction box 9 disposed at one end of the explosion-proof heating tube 5.

[0047] The end of the explosion-proof heating tube 5 away from the wiring cavity and the explosion-proof junction box 9 is inserted into the heating device mounting port 11 until it is in close contact with the inner wall of the housing 1;

[0048] The wiring cavity and the explosion-proof junction box 9 integrate power supply and control devices, and the part connected to the explosion-proof heating tube 5 connects the lead wire of the explosion-proof heating tube 5 to the external power cable.

[0049] In this utility model, the air inlet 6, the filter assembly 2, the explosion-proof heating tube 5, and the air outlet 7 are arranged sequentially along the length of the shell 1.

[0050] The housing 1 is the main pressure-bearing structure. The filter assembly 2 and heating device 3 are inserted into the housing 1. This invention is a static device, and its usage and gas flow direction are as follows:

[0051] Filtration stage: The gas to be treated, such as natural gas from the pipeline, enters the housing 1 through the inlet 6. The gas first flows through the filter element 2. Under the action of pressure difference, solid particles and droplets in the gas are intercepted on the outer surface of the filter element. The clean gas passes through the filter element and enters the downstream cavity.

[0052] Heating and flow guiding stage: Clean gas enters the cavity of housing 1 containing heating device 3. During this process, the gas comes into full and uniform contact with the vertically inserted explosion-proof heating tube 5 and exchanges heat. The design of fixed baffle 8 eliminates local overheating or underheating caused by the natural rise of hot air, ensuring that all gas receives basically uniform heating.

[0053] Output stage: After being heated to the set temperature, the gas is finally collected and flows out from the outlet 7, and delivered to the subsequent gas-using equipment.

[0054] This invention employs a heating device that is inserted perpendicularly to the length direction of the housing 1, i.e., the direction of gas flow. This arrangement makes full use of the space inside the housing 1, allowing the heating tube to have sufficient insertion depth, a large heat exchange area, and facilitating centralized installation, wiring, and maintenance.

[0055] In some embodiments, the air inlet 6, the air outlet 7, and the heating device mounting port 11 are all provided with flanges, which are fixed to the air inlet pipeline, the air outlet pipeline, and the heating device 3 respectively through matching flanges.

[0056] In some embodiments, the end of the housing 1 furthest from the end cap is an open structure;

[0057] Furthermore, the inner diameter of the opening structure is larger than the inner diameter of the rest of the cavity in the shell 1;

[0058] The opening structure is equipped with a removable blind plate 10.

[0059] In practical applications, the other end of the housing 1 away from the end cap is an open structure, and the inner diameter of the open structure is larger than the inner diameter of the rest of the inner cavity of the housing 1, which makes it easy to replace the filter component 2 of the housing 1.

[0060] In some embodiments, the filter assembly 2 is a cylindrical filter element, including a filter element skeleton made of stainless steel perforated tube, and a polyester fiber or glass fiber filter felt wrapped around the filter element skeleton and fixed to the filter element skeleton.

[0061] In some embodiments, the explosion-proof heating tube 5 is fixed inside a heating tube fixing flange 4, and is fixed to the heating device mounting port 11 through the heating tube fixing flange 4.

[0062] In practical applications, the heating tube fixing flange 4 serves as the mounting base for the heating device 3, thereby fixing the heating device 3 onto the housing 1.

[0063] In some embodiments, a fixed baffle with a flow channel for gas to pass through is provided between the heating device 3 and the gas outlet 7 inside the housing 1 as a flow guide structure 8.

[0064] In practical applications, the flow guiding structure 8 can solve the problem of uneven heating of the gas near both ends of the heating device 3. The flow guiding structure 8 is a fixed baffle with the same material as the shell 1 and a flow channel for gas to pass through. Its edge is welded to the inner wall of the shell 1, and the flow channel in the middle for gas to pass through achieves the function of uniform heating.

[0065] The flow guiding structure is simple and reliable, requires no moving parts, and effectively solves the problem of uneven heat exchange between the horizontally flowing medium and the vertical heating tube in this invention.

[0066] This invention changes the traditional arrangement of the heater and filter connected in parallel through external pipes in a split system. Instead, it integrates the explosion-proof heating tube 5 as a single module, vertically inserting it into the internal cavity of the horizontal housing 1 via the top mounting flange 4. This "shared pressure-bearing housing" design achieves seamless integration of the filter chamber and heating chamber, fundamentally simplifying the system structure.

[0067] This invention addresses the problem of uneven heating caused by vertically inserting a heating tube into a horizontal flow space by incorporating a flow-guiding structure consisting of fixed baffles 8 inside the casing. This structure forces the gas to flow along a preset path, significantly extending its contact time and ensuring uniformity with the heating tube, thereby completing the heat exchange process efficiently and uniformly within a limited space.

[0068] Through the above two points, this utility model, with its simple and reliable structure, simultaneously meets the dual functional requirements of filtration and uniform heating, achieving a synergistic effect of compact equipment, improved energy efficiency, and cost savings.

[0069] Compared with the existing "filter + independent heater" split solution, this utility model has the following advantages:

[0070] Under the same gas volume and temperature rise requirements, the overall length of this utility model is shorter than that of the prior art, saving valuable equipment space.

[0071] By eliminating the connecting pipes and fittings between the filter and the heater, this invention reduces pressure loss compared to existing technologies.

[0072] The heating power requirement of this invention is lower than that of a split system, mainly due to the reduction of heat loss in the intermediate pipes and more uniform heat exchange. Therefore, the heating efficiency is improved when the same outlet temperature is achieved.

[0073] This invention has a simple structure, lower implementation cost than existing split structures, and can significantly improve installation and construction speed.

[0074] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A horizontal gas filter with vertical heating function; characterized in that, Includes a housing (1) and a heating device (3); The shell (1) is a pressure vessel with a uniform cross-section that extends horizontally, and has a semi-ellipsoidal head at one end; The side wall of the middle part of the housing (1) is provided with an air inlet (6), and the end cap is provided with an air outlet (7). The housing (1) has a heating device mounting port (11) on the side wall of the air inlet (6) and the air outlet (7). The length directions of the air inlet (6) and the heating device mounting port (11) are both perpendicular to the length direction of the housing (1); A filter assembly (2) is provided inside the housing (1) at the position corresponding to the air inlet (6); The heating device (3) is installed at the heating device mounting port (11); The heating device (3) includes an explosion-proof heating tube (5) composed of multiple U-shaped or straight rod-shaped metal tubular electric heating elements, and a wiring cavity and an explosion-proof junction box (9) disposed at one end of the explosion-proof heating tube (5). The end of the explosion-proof heating tube (5) away from the wiring cavity and the explosion-proof junction box (9) is inserted into the heating device mounting port (11) until it is close to the inner wall of the housing (1); The wiring cavity and the explosion-proof junction box (9) integrate power supply and control devices. The part connected to the explosion-proof heating tube (5) connects the lead wire of the explosion-proof heating tube (5) to the external power cable.

2. The horizontal gas filter with vertical heating function according to claim 1, characterized in that, The air inlet (6), the air outlet (7), and the heating device mounting port (11) are all equipped with flanges, which are fixed to the air inlet pipe, the air outlet pipe, and the heating device (3) respectively through the matching flanges.

3. The horizontal gas filter with vertical heating function according to claim 1, characterized in that, The other end of the shell (1) away from the end cap is an open structure; Furthermore, the inner diameter of the opening structure is larger than the inner diameter of the remaining part of the inner cavity of the shell (1); The opening structure is equipped with a removable blind plate (10).

4. The horizontal gas filter with vertical heating function according to claim 1, characterized in that, The filter assembly (2) is a cylindrical filter element, including a filter element skeleton made of stainless steel perforated tube, and a polyester fiber or glass fiber filter felt wrapped around the filter element skeleton. The filter element support, which is fixed to the filter element skeleton and extends from the polyester fiber or glass fiber filter felt, is fixed in the housing (1) at the position corresponding to the air inlet (6).

5. The horizontal gas filter with vertical heating function according to claim 1, characterized in that, The explosion-proof heating tube (5) is fixed inside a heating tube fixing flange (4) and is fixed to the heating device mounting port (11) through the heating tube fixing flange (4).

6. The horizontal gas filter with vertical heating function according to claim 1, characterized in that, Inside the housing (1), a fixed baffle with a flow channel for gas to pass through is provided between the heating device (3) and the gas outlet (7) as a flow guide structure (8).

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