Combined gas filter device with explosion-proof function and use method thereof

Abstract

The application discloses a combined gas filtering device with an anti-explosion function and a use method thereof, and belongs to the solid residue filtering field. The combined gas filtering device comprises at least two filtering containers and an overpressure anti-explosion pipeline assembly. The at least two filtering containers are communicated through connecting pipes to form a high-temperature and high-pressure gas main channel. The at least two overpressure anti-explosion pipeline assemblies are respectively communicated with the two filtering containers, and the two overpressure anti-explosion pipeline assemblies are communicated with each other. The combined gas filtering device with the anti-explosion function and the use method thereof have the advantages that when the filtering containers are blocked, the filtering containers can discharge the gas through the anti-explosion pipeline assembly or convey the gas to other filtering containers, so that the blocking of a single or multiple filtering devices does not affect the use of the whole filtering device, the normal operation of the device is ensured, and the combined gas filtering device with the anti-explosion function has good practical value and application prospect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of solid residue filtration, and particularly relates to a combined gas filter device with an anti-explosion function and a use method thereof. BACKGROUND

[0002] A solid gas generator relies on internal solid main charge combustion to generate a large amount of gas energy, which is converted into mechanical work by a downstream actuation system to complete certain specific functions, and can be used for unlocking, launching and separating of an aircraft and providing thrust to control flight attitude. A large amount of solid residues are mixed in the gas generated by the solid gas generator. In order to ensure the normal and reliable operation of the downstream actuation system, the gas needs to be filtered so that the solid residue content and particle size of the filtered gas meet the use requirements of the downstream actuation system.

[0003] If the amount of solid residues contained in the gas exceeds the filtering limit of the filter device, the filter device may explode due to overpressure, thereby affecting the normal use of the filter device. Therefore, a high-temperature and high-pressure gas filter device with an anti-explosion function and a use method thereof are needed to solve the above problems. SUMMARY

[0004] In view of one or more of the above defects or improvement needs of the prior art, the present application provides a combined gas filter device with an anti-explosion function and a use method thereof. The anti-explosion pipe assembly is arranged, so that when the filter container is blocked, the gas can be discharged or transported to other filter containers through the anti-explosion pipe assembly, so as to prevent the blockage of a single or multiple filter devices from affecting the use of the entire filter device and ensure the normal operation of the gas circuit.

[0005] To achieve the above purpose, the present application provides a combined gas filter device with an anti-explosion function, comprising at least two filter containers and at least two overpressure anti-explosion pipe assemblies.

[0006] The filter container comprises a bottle body, an air inlet and an air outlet are formed on the bottle body respectively; a filter is arranged inside the bottle body and corresponds to the position of the air outlet; at least two filter containers are communicated through a connecting pipe to form a high-temperature and high-pressure gas main channel;

[0007] At least two overpressure anti-explosion pipe assemblies are respectively communicated with two filter containers, and the two overpressure anti-explosion pipe assemblies are mutually communicated.

[0008] The overpressure explosion-proof pipeline assembly includes a pipe body, an explosion-proof structure, and a three-way valve; wherein one end of the pipe body is connected to one of the filter containers, and the other end is connected to the explosion-proof structure; the three-way valve is assembled onto the other filter container, and the other two valve ports of the three-way valve are connected to the explosion-proof structure through the pipe body; or one valve port is connected to the overpressure explosion-proof pipeline assembly through the pipe body, and the other valve port serves as an outlet to discharge the gas in the overpressure explosion-proof pipeline assembly.

[0009] As a further improvement of the present invention, the explosion-proof structure includes a first diaphragm and a second diaphragm, and a baffle; the baffle is mounted on the first diaphragm, the second diaphragm is mounted on the baffle, and an exhaust hole is formed on the baffle; and

[0010] Both the first diaphragm and the second diaphragm are provided with pre-fabricated defect structures so that the first diaphragm and / or the second diaphragm can be destroyed when subjected to excessive pressure, thereby conducting the overpressure explosion-proof pipeline assembly.

[0011] As a further improvement of the present invention, the prefabricated defect structure is a star-shaped or circular structure.

[0012] As a further improvement of the present invention, the first diaphragm, the baffle, and the second diaphragm are welded together to form a single structure; and

[0013] The second diaphragm is formed by bending a sheet material.

[0014] As a further improvement of the present invention, both the air inlet and the air outlet of the bottle are provided with elliptical end caps.

[0015] As a further improvement of the present invention, the filters in at least two of the filter containers exhibit a gradient in precision or have the same precision; and

[0016] The pressure-bearing capacity of the two diaphragms in the multiple sets of overpressure explosion-proof pipeline assemblies is designed to be multiple sets of different burst pressures or the same burst pressure.

[0017] As a further improvement of the present invention, the overpressure explosion-proof pipeline assembly is located away from the main channel of high-speed flowing high-temperature and high-pressure gas.

[0018] As a further improvement of the present invention, the bottle body is made of TC11 material.

[0019] As a further improvement of the present invention, there are three filter containers; correspondingly, there are three sets of overpressure explosion-proof pipeline assemblies; the three sets of overpressure explosion-proof pipeline assemblies are respectively connected to the three filter containers, and adjacent sets of overpressure explosion-proof pipeline assemblies are interconnected.

[0020] On the other hand, the present invention also provides a method of using a combined gas filtration device, which utilizes the above-mentioned gas filtration device and includes the following steps:

[0021] S100: Assemble at least two filter containers together, and simultaneously assemble at least two of the aforementioned overpressure explosion-proof piping assemblies in parallel, so that they are connected to at least two filter containers;

[0022] S200: Gas is injected into the filter container. When any filter container becomes blocked, the first and second diaphragms in the overpressure explosion-proof pipeline assembly are positively damaged due to excessive pressure, thus making the overpressure explosion-proof pipeline assembly open.

[0023] S300: Gas is delivered to other filter containers through the overpressure explosion-proof pipeline assembly, thereby bypassing clogged filter containers before being input into the downstream actuation system for use.

[0024] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0025] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0026] The explosion-proof combined gas filtration device and its usage method of the present invention, through the explosion-proof pipeline assembly, enable the gas to be discharged or transported to other filter containers through the explosion-proof pipeline assembly when the filter container is blocked, so as to prevent the blockage of one or more filter devices from affecting the use of the entire filter device and ensure the normal operation of the device. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the filter container structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the overall front cross-sectional structure of the overpressure explosion-proof pipeline assembly of the present invention;

[0030] Figure 4 This is a schematic diagram of the overall three-dimensional structure of the overpressure explosion-proof pipeline assembly of the present invention;

[0031] Figure 5 This is a schematic diagram showing the gas flow direction during normal operation of the filter device of the present invention;

[0032] Figure 6 This is a schematic diagram showing the gas flow direction during partial failure of the first filter container in the filtration device of the present invention;

[0033] Figure 7This is a structural diagram showing the arrangement of the filtration device of the present invention in series and parallel configurations.

[0034] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 100, filter device; 101, bottle body; 102, air inlet; 103, air outlet; 104, filter device;

[0035] 200. Connecting pipe;

[0036] 300. Overpressure explosion-proof pipeline assembly; 301. Pipe body; 302. Explosion-proof structure; 3021. Diaphragm; 3022. Baffle; 3023. Diaphragm; 303. Three-way valve; 304. Gas outlet. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the technical features involved in the various embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Please see Figures 1-7 The explosion-proof combined gas filtration device in the preferred embodiment of the present invention, through the explosion-proof pipeline assembly, enables the gas to be discharged or transported to other filter containers when the filter container is blocked, so as to prevent the blockage of one or more filter devices from affecting the use of the entire filter device and ensure the normal operation of the gas circuit.

[0040] Specifically, the filtration device in the preferred embodiment of the present invention includes at least two filter containers 100 and at least two overpressure explosion-proof pipeline assemblies 300; the filter container 100 includes a bottle body 101, and an air inlet 102 and an air outlet 103 are respectively formed on the bottle body 101; a filter 104 is provided inside the bottle body 101 at a position corresponding to the air outlet 103; the at least two filter containers 100 are connected by a connecting pipe 200 to form a high-temperature and high-pressure gas main channel; the overpressure explosion-proof pipeline assembly The component 300 is connected to two filter containers 100 respectively, and includes a pipe body 301, an explosion-proof structure 302 and a three-way valve 303; one end of the pipe body 301 is connected to one of the filter containers 100, and the other end is connected to the explosion-proof structure 302; the three-way valve 303 is assembled onto the other filter container 100, and one of the other two valve ports of the three-way valve 303 is connected to the explosion-proof structure 302 through the pipe body 301, and the other valve port serves as an outlet 103 to discharge the gas in the overpressure explosion-proof pipeline assembly 300.

[0041] More specifically, the explosion-proof structure 302 includes a first diaphragm 3021 and a second diaphragm 3023, as well as a baffle 3022; the baffle 3022 is mounted on the first diaphragm 3021, and the second diaphragm 3023 is mounted on the baffle 3022, and an exhaust hole is formed on the baffle 3022; and both the first diaphragm 3021 and the second diaphragm 3023 are provided with pre-fabricated defect structures so that the first diaphragm 3021 and / or the second diaphragm 3023 can be destroyed when subjected to excessive pressure, so that the overpressure explosion-proof pipeline assembly 300 can be opened.

[0042] In actual setup, the preferred explosion-proof component is formed by welding a first diaphragm 3021, a baffle 3022, and a second diaphragm 3023 to form a self-sealing structure with a pressure of atmospheric pressure 0.1 MPa (for ease of calculation, this is assumed to be 0 in this invention). The pre-fabricated defect structure can be either star-shaped or annular, and the specific dimensions of the pre-fabricated defect structure are determined according to the safety pressure P of the filter device. The equivalent area of ​​the exhaust port on the baffle 3022 is determined based on the pressure relief gas flow rate. The baffle 3022 supports the second diaphragm 3023, and the reverse pressure resistance of the second diaphragm 3023 is much greater than the working pressure (which can be approximated as infinite), preventing the second diaphragm 3023 from being damaged under reverse high pressure conditions. The second diaphragm 3023 is formed by bending sheet metal and has a pre-fabricated defect at the exhaust end. The pre-fabricated defect structure can be either star-shaped or annular, and the specific dimensions of the pre-fabricated defect structure are determined according to the maximum allowable pressure difference ΔP during normal operation of the filter device.

[0043] In one specific embodiment, all filter containers 100 and filters 104 are assumed to have the same filtration accuracy, and the pressure-bearing capacity of the first diaphragm 3021 and the second diaphragm 3023 contained in the overpressure explosion-proof pipeline assembly 300 is assumed to be the same. The working pressure of the filter device is P0, the breaking pressure of the first diaphragm 3021 is P1, the reverse pressure-bearing capacity of the second diaphragm 3023 is P2, and the forward breaking pressure difference of the second diaphragm 3023 is ΔP. ​​Therefore, the forward pressure difference of the first diaphragm 3021 is P0, and the pressure difference of the second diaphragm 3023 is ΔP. 23. The reverse pressure difference is P0. Under normal operating conditions, P0 is less than P1 and P2, and neither the first diaphragm 3021 nor the second diaphragm 3023 will be damaged. If the forward pressure difference of the first diaphragm 3021 is abnormal (the upstream filter container 104 is blocked, causing the working pressure of the filter device to increase to P0) and reaches the pre-defect damage pressure P1 of the first diaphragm 3021, the first diaphragm 3021 will be forward connected. The forward pressure difference of the second diaphragm 3023 is P1 - P0, which is greater than the forward damage pressure difference ΔP of the pre-defect of the second diaphragm 3023. The second diaphragm 3023 will be forward connected, and the upstream filter container 100 and the downstream filter container 100 of the explosion-proof component will be connected. The gas can continue to be filtered by the downstream filter container 100 and then supplied to the downstream actuation system.

[0044] In this embodiment, the operating pressure of the filtration device is P0 = 15 MPa, the breaking pressure of the first diaphragm 3021 is P1 = 25 MPa, the reverse pressure resistance of the second diaphragm 3023 is P2 = 60 MPa, the forward breaking pressure difference of the second diaphragm 3023 is ΔP = 5 MPa, and the high-temperature and high-pressure gas is processed according to... Figure 5 The path shown is normal. Assuming the filter 104 in the first filter container 100 is clogged, and the second and third filter containers 100 are operating normally, the upstream pressure of filter 104 in the second filter container 100 is 15 MPa. The upstream pressure of filter 104 in the first filter container 100 gradually rises from 15 MPa to the first diaphragm 3021 failure pressure P1 = 25 MPa. The first diaphragm 3021 in the overpressure explosion-proof pipeline assembly 300 fails and becomes conductive. The upstream pressure of the second diaphragm 3023 in the overpressure explosion-proof pipeline assembly 300 is 25 MPa. The pressure difference between the upstream and downstream of the second diaphragm 3023 is (25-15) MPa = 10 MPa, which is greater than the pressure difference ΔP = 5 MPa caused by the failure of the second diaphragm 3023. The second diaphragm 3023 in the overpressure explosion-proof pipeline fails and becomes conductive. The gas, after passing through the second and third filter containers 100, is supplied to the downstream actuation system. The high-temperature, high-pressure gas follows... Figure 6 The flow path shown is as follows.

[0045] In actual setup, it is preferable that the precision of the filters 104 in at least two filter containers 100 varies in a gradient; or that the precision of the filters 104 in at least two filter containers 100 is the same; at the same time, in actual design, the pressure bearing capacity of the two diaphragms in multiple sets of overpressure explosion-proof pipeline assemblies 300 can also be designed as multiple sets of different burst pressures or the same burst pressure.

[0046] More preferably, the overpressure explosion-proof pipeline assembly 300 is located away from the main channel of high-speed flowing high-temperature and high-pressure gas. Since the inner cavities of the pipelines at both ends of the overpressure explosion-proof pipeline assembly 300 are stagnant zones, the high-temperature and high-pressure gas within the pipeline is in a static state. The high-temperature and high-pressure gas has a minimal thermal impact on the overpressure explosion-proof pipeline assembly 300, resulting in minimal temperature changes. The temperature has no effect on the strength of the first diaphragm 3021, the baffle 3022, and the second diaphragm 3023; their strength can remain constant. Therefore, the difference between the pre-defect failure pressure P of the first diaphragm 3021 and the forward failure pressure of the pre-defect of the second diaphragm 3023 is a constant value, making it suitable for use in high-temperature and high-pressure gas systems with safe and reliable operation.

[0047] More preferably, the bottle body 101 is made of TC11 material. Meanwhile, both the air inlet 102 and the air outlet 103 of the bottle body 101 are provided with elliptical end caps to ensure the airtightness of the connection between the air inlet 102 and the air outlet 103 and the connecting pipe 200.

[0048] In a specific application scenario, there are three filter containers 100: a first filter container 100 (containing a filter 104 with a precision of 150µm), a second filter container 100 (containing a filter 104 with a precision of 100µm), and a third filter container 100 (containing a filter 104 with a precision of 50µm). Correspondingly, there are three sets of overpressure explosion-proof piping assemblies 300: a first overpressure explosion-proof piping assembly 300 (containing a first diaphragm 3021 with a breakdown pressure of P1=35MPa, a second diaphragm 3023 with a reverse pressure resistance of P2=60MPa, and a forward breakdown pressure difference of ΔP=10MPa), and a second overpressure explosion-proof piping assembly 300 (containing a first diaphragm 3021 with a breakdown pressure of P1=30MPa, a second diaphragm 3023 with a reverse pressure resistance of P2=60MPa, and a forward breakdown pressure difference of ΔP=7.5). The three sets of overpressure explosion-proof pipeline assemblies 300 (containing a first diaphragm 3021 with a failure pressure of P1=25MPa, a second diaphragm 3023 with a reverse pressure resistance of P2=60 MPa, and a forward failure pressure difference of ΔP=5 MPa) correspond to three filter containers 100 respectively, and adjacent overpressure explosion-proof pipeline assemblies 300 are interconnected.

[0049] The present invention will be further described below in conjunction with the above-mentioned common applications.

[0050] The first filter container 100 is connected to the outlet of the solid gas generator and serves as the air inlet 102 of the filter device. The first filter container 100, the second filter container 100, and the third filter container 100 are connected in series via a connecting pipe 200. The air inlet 102 of the first filter container 100 and the air inlet 102 of the second filter container 100 are connected via a first overpressure explosion-proof pipeline assembly 300. The air inlet 102 of the second filter container 100 and the air inlet 102 of the third filter container 100 are connected via a second overpressure explosion-proof pipeline assembly 300. The air inlet 102 of the third filter container 100 is connected to the outside via a third overpressure explosion-proof pipeline assembly 300. The other end of the third overpressure explosion-proof pipeline assembly 300 is connected to the outside via an outlet end 304, which serves as the overpressure outlet end 304 of the filter device.

[0051] Furthermore, in the preferred embodiment of the present invention, the working mode of the filter device changes when it is clogged under different operating conditions. The following describes the working mode of the filter device when clogged under different operating conditions in conjunction with the above-mentioned common applications.

[0052] Operating Condition 1: The filter 104 in the first filter container 100 becomes clogged. At this time, the upstream pressure of the first filter container 100 is higher than the pre-fabricated defect failure pressure P1 of the first diaphragm 3021. The first diaphragm 3021 and the second diaphragm 3023 in the first overpressure explosion-proof pipeline assembly 300 are positively damaged and connected. The gas is then supplied to the downstream actuation system after passing through the second filter container 100 and the third filter container 100.

[0053] Condition 2: The filter 104 in the second filter container 100 becomes clogged. At this time, the upstream pressure of the second filter container 100 is higher than the pre-fabricated defect failure pressure P1 of the first diaphragm 3021. The first diaphragm 3021 and the second diaphragm 3023 in the second overpressure explosion-proof pipeline assembly 300 are positively damaged and connected. The gas passes through the first filter container 100 and the third filter container 100 and is then supplied to the downstream actuation system.

[0054] Condition 3: The filters 104 contained in the first and second filter containers 100 become clogged. At this time, the upstream pressure of the first and second filter containers 100 is higher than the pre-fabricated defect failure pressure P1 of the first diaphragm 3021. The first diaphragm 3021 and the second diaphragm 3023 contained in the first and second overpressure explosion-proof pipeline assemblies 300 and 3023 are positively damaged and open, and the gas is supplied to the downstream actuation system after passing through the third filter container 100.

[0055] Condition 4: The filters 104 contained in the first filter container 100, the second filter container 100, and the third filter container 100 are all clogged. At this time, the upstream pressure of the first filter container 100, the second filter container 100, and the third filter container 100 is higher than the pre-fabrication defect failure pressure P1 of the first diaphragm 3021. The first diaphragm 3021 and the second diaphragm 3023 contained in the first overpressure explosion-proof pipeline assembly 300, the second overpressure explosion-proof pipeline assembly 300, and the third overpressure explosion-proof pipeline assembly 300 are damaged and connected in the forward direction, and the gas is discharged to the external environment to prevent unfiltered high-temperature and high-pressure gas from entering the downstream actuation system and causing the downstream actuation system to fail.

[0056] Furthermore, in the preferred embodiment described above, multiple filter containers are arranged in series. However, in actual installation, they can also be arranged in series or in parallel, such as... Figure 7 As shown in the image.

[0057] On the other hand, the present invention also provides a method of using a combined gas filtration device, which utilizes the above-mentioned gas filtration device and includes the following steps:

[0058] S100: Assemble at least two filter containers 100 together, and simultaneously assemble at least two overpressure explosion-proof piping assemblies 300 in parallel, so that they are connected to at least two filter containers 100.

[0059] S200: Gas is injected into the filter container 100. When any filter container 100 becomes blocked, the first diaphragm 3021 and the second diaphragm 3023 in the overpressure explosion-proof pipeline assembly 300 are damaged in the forward direction due to excessive pressure, so that the overpressure explosion-proof pipeline assembly 300 is open.

[0060] S300: Gas is delivered to other filter containers 100 through the overpressure explosion-proof pipeline assembly 300, thereby bypassing the blocked filter container 100 before being input into the downstream actuation system.

[0061] In summary, the filtration device in the preferred embodiment of the present invention has the advantage that the overpressure explosion-proof pipeline assembly adopts a combined diaphragm structure, and the pre-fabricated defect positive pressure failure pressure of the first diaphragm is a constant pressure P1. This can prevent the downstream actuation system from venting at a high flow rate for a long time, causing a large pressure drop between the upstream and downstream of the filter container, which would lead to the unexpected failure of the overpressure explosion-proof pipeline assembly. If the overpressure explosion-proof pipeline assembly adopts a single pre-fabricated defect diaphragm structure, the downstream actuation system venting at a high flow rate for a long time would cause a large pressure drop between the upstream and downstream of the filter container, and the single pre-fabricated defect diaphragm would unexpectedly fail, leading to the failure of the filter container.

[0062] Meanwhile, if one or two of the first, second, and third filter containers become blocked, the explosion-proof components contained in the corresponding first, second, and third overpressure explosion-proof pipeline assemblies will rupture. The gas upstream of the blocked filter container will enter the normal filter container for filtration and be used by the downstream actuation system. This prevents the blockage of one or more filter containers from causing an overpressure explosion in the entire filtration device. It can effectively solve the problem of overpressure explosion caused by partial failure of the filtration device and extend the service life of the filtration device.

[0063] Finally, the filtration device of the present invention is modular, and only the partially failed module needs to be replaced to achieve the complete filtration function. It has the advantages of simple structure, strong interchangeability, low cost of use and long service life.

[0064] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A combined gas filter device with explosion-proof function, characterized in that, It comprises at least two filtering containers (100) and at least two overpressure explosion-proof pipeline assemblies (300); The filtering container (100) comprises a bottle body (101), an air inlet (102) and an air outlet (103) are respectively formed on the bottle body (101); a filter (104) is arranged inside the bottle body (101) and at a position corresponding to the air outlet (103); at least two filtering containers (100) are communicated through a connecting pipe (200) to form a high-temperature and high-pressure gas main channel; At least two overpressure explosion-proof pipeline assemblies (300) are respectively communicated with two filtering containers (100), and two overpressure explosion-proof pipeline assemblies (300) are communicated with each other; The overpressure explosion-proof pipeline assembly (300) comprises a pipe body (301), an explosion-proof structure (302) and a three-way valve (303); one end of the pipe body (301) is communicated with one of the filtering containers (100), and the other end is communicated with the explosion-proof structure (302); the three-way valve (303) is assembled to the other filtering container (100), and the other two valve ports of the three-way valve (303) are communicated with the explosion-proof structure (302) through the pipe body (301), or one valve port is communicated with the overpressure explosion-proof pipeline assembly (300) through the pipe body (301), and the other valve port is an air outlet end (304) for discharging gas in the overpressure explosion-proof pipeline assembly (300); The explosion-proof structure (302) comprises a first diaphragm (3021) and a second diaphragm (3023), and a baffle (3022); the baffle (3022) is installed on the first diaphragm (3021), the second diaphragm (3023) is installed on the baffle (3022), and an exhaust hole is formed on the baffle (3022); and The first diaphragm (3021) and the second diaphragm (3023) are provided with a preformed defect structure, so that the first diaphragm (3021) and the second diaphragm (3023) can be damaged when the pressure is too large, thereby conducting the overpressure explosion-proof pipeline assembly (300).

2. The combined gas filter device with explosion-proof function according to claim 1, characterized in that, The preformed defect structure is a "m" type or a circular ring shape.

3. The combined gas filter device with explosion-proof function according to claim 1, characterized in that, The first diaphragm (3021) and the baffle (3022), and the second diaphragm (3023) are welded into shape; and The second diaphragm (3023) is formed by bending a plate.

4. The combined gas filter device with explosion-proof function according to claim 1, characterized in that, The air inlet (102) and the air outlet (103) of the bottle body (101) are provided with an oval head.

5. The combined gas filter device with explosion-proof function according to claim 1, characterized in that, The precision of the filter (104) in at least two filtering containers (100) is gradiently changed or the same; and The pressure-bearing capacity of two diaphragms in a plurality of overpressure explosion-proof pipeline assemblies (300) is designed to be different or the same.

6. The combined gas filter device with explosion-proof function according to claim 1, characterized in that, The overpressure explosion-proof pipeline assembly (300) is arranged away from the high-temperature and high-pressure gas main channel flowing at high speed.

7. The combined gas filter device with explosion-proof function according to claim 1, characterized in that, The bottle body (101) is made of TC11 material.

8. The combined gas filter device with explosion-proof function according to any one of claims 1-7, characterized in that, The filter container (100) has three; accordingly, the overpressure explosion-proof pipeline assembly (300) has three groups; three groups of the overpressure explosion-proof pipeline assembly (300) respectively correspond to the communication of three filter containers (100), and adjacent two overpressure explosion-proof pipeline assemblies (300) are communicated with each other.

9. A method of using a combined gas filter apparatus, characterized by, It is implemented by using the gas filter device in any one of claims 1-8, and comprises the following steps: S100: at least two filter containers (100) are assembled together, and at least two overpressure explosion-proof pipeline assemblies (300) are assembled in parallel and communicated with the at least two filter containers (100); S200: the filter container (100) is injected with gas, when any one filter container (100) is blocked, the first diaphragm (3021) and the second diaphragm (3023) in the overpressure explosion-proof pipeline assembly (300) are positively damaged due to excessive pressure, so that the overpressure explosion-proof pipeline assembly (300) is conducted; S300: the gas is transported to other filter containers (100) through the overpressure explosion-proof pipeline assembly (300), so as to avoid the blocked filter container (100) and then input to the downstream actuating system for use.

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