A strength test device for flame arrester shell

Abstract

The invention relates to the technical field of flame arrester testing, in particular to a strength testing device for a flame arrester shell, comprising a test bench, a pressure testing structure, a fixing structure, a sealing testing structure, a tensile testing structure, a plug-in structure and a flame arrester shell body; the flame arrester shell body is fixed by the fixing structure, thereby improving the fixing efficiency of the flame arrester shell body, and the flame arrester shell body of different sizes can be fixed at the same time, thereby improving the applicability of the testing device; the flame arrester shell body is pressure tested by the pressure testing structure to check whether the pressure resistance of the flame arrester shell body is qualified; the sealing property of the flame arrester shell body is tested by the sealing testing structure to test whether there is crack leakage on the flame arrester shell body; the tensile testing structure is plugged with a pressure plate by the plug-in structure, and then the tensile testing structure is used to perform a tensile test.

Description

Technical Field

[0001] The invention relates to the technical field of flame arrester testing, in particular to a strength testing device for a flame arrester shell. Background Art

[0002] Flame arresters are safety devices used to prevent the spread of flames of flammable gases and flammable liquid vapors. The existing smaller flame arrester shells are tested for strength using test equipment during processing to further analyze whether the flame arrester shells have quality defects.

[0003] However, the conventional flame arrester housing strength test device impacts the flame arrester housing through an impact column (the flame arrester housing strength test device refers to the test device in the patent publication number CN211179362U), and the flame arrester housing is fixed on the test bench by a clamp, which is inconvenient to replace different clamps to fix the flame arrester housing, and the applicability is low. In addition, the central part of the flame arrester housing is a channel position, and the impact column impacts it, which is easy to deviate, and the flame arrester is unevenly stressed, affecting the test effect; at the same time, it is inconvenient to perform a sealing test on an open housing, and it is not convenient to effectively judge whether there is crack leakage in the housing, and the test effect is poor; and the flame arrester housing cannot be subjected to a tensile test, and the functionality of the test device is relatively single. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a strength testing device for a flame arrester housing.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a strength test device for a flame arrester housing, comprising a test bench, a pressure test structure arranged on the test bench, a fixing structure arranged on the pressure test structure, a sealing test structure arranged on the test bench, a tension test structure arranged on the pressure test structure, and a plug-in structure arranged on the tension test structure;

[0006] The pressure test structure includes a mounting seat and a pressure sensor installed at the bottom end of the mounting seat, the mounting seat is slidably connected to the test bench, and the side of the pressure sensor away from the mounting seat is fixedly connected to the test bench;

[0007] The fixing structure includes two fixing frames and a sliding sleeve slidably connected to the fixing frames, the mounting seat is fixedly connected with two fixing frames, the sliding sleeve is slidably connected with a connecting strip, the connecting strip is fixedly connected with a pressing block, the pressing block is fixedly connected with two positioning shafts, a flame arrester housing body is placed on the mounting seat, the positioning shaft is plugged into a through hole on a flange at the bottom end of the flame arrester housing body, a second screw is threadedly connected to the fixing frame, the end of the second screw is rotatably connected to the sliding sleeve, and a hand wheel is fixedly connected to the second screw.

[0008] Specifically, a gantry with a U-shaped cross-section is fixedly connected to the test bench, a motor is fixedly connected to the gantry, a first screw is rotatably connected to the gantry, an output end of the motor is fixedly connected to the first screw, a slide is threadedly connected to the first screw, a hydraulic rod is fixedly connected to the slide, a pressure plate is placed on the top of the flame arrester housing body, a mounting groove is provided on the pressure plate, and the telescopic end of the hydraulic rod is plugged into the mounting groove.

[0009] Specifically, a plurality of positioning rods are arranged in a circumferential array on the pressure plate, and the positioning rods are plugged into through holes on the flange at the top end of the flame arrester housing body.

[0010] Specifically, a guide rod arranged parallel to the first screw rod is fixedly connected to the gantry, and the slide seat is slidably connected to the guide rod.

[0011] Specifically, the sealing test structure includes a booster pump and a water inlet pipe fixedly connected to the booster pump, the test bench is fixedly connected to the booster pump, the booster pump is fixedly connected to a water outlet pipe, the mounting seat is provided with a water inlet hole, one end of the water outlet pipe away from the booster pump is fixedly connected to the mounting seat, and the water outlet pipe is communicated with the water inlet hole.

[0012] Specifically, a first sealing groove is provided on the flange at the bottom end of the flame arrester housing body, a first sealing ring is provided inside the first sealing groove, and the first sealing ring is in contact with the mounting seat; a second sealing groove is provided on the flange at the top end of the flame arrester housing body, a second sealing ring is provided inside the second sealing groove, and the second sealing ring is in contact with the pressure plate.

[0013] Specifically, the tension testing structure includes a storage slot and a connecting seat slidably connected to the inside of the storage slot, the gantry is provided with a storage slot, the connecting seat is fixedly connected to a pull rope, the gantry is fixedly connected to a first guide wheel and a second guide wheel, the pull rope passes around the first guide wheel and the second guide wheel, and the end of the pull rope facing away from the connecting seat is fixedly connected to a placement frame, and a counterweight is placed inside the placement frame.

[0014] Specifically, a plurality of the positioning rods are provided with limiting grooves, and two half rings are engaged in the limiting grooves, one of the half rings is provided with two buckle grooves, and the other half ring is provided with two buckle blocks, and the buckle blocks are engaged with the buckle grooves.

[0015] Specifically, the plug-in structure includes a first card block and a connecting plate fixedly connected to the first card block, two first card blocks are symmetrically slidably connected to the connecting seat, the connecting plate is slidably connected to the connecting seat, a second card block is fixedly connected to the connecting plate, the second card block is slidably connected to the connecting seat, a first card slot is provided on the gantry, the second card block is engaged with the first card slot, and a spring is fixedly connected between the connecting plate and the connecting seat.

[0016] Specifically, the pressure plate is provided with two second slots, the cross-sections of the first block and the second block are both trapezoidal structures, a guide shaft passes through the interior of the spring, both ends of the guide shaft are fixedly connected to the interior of the connecting seat, and the connecting plate is slidably connected to the guide shaft.

[0017] The beneficial effects of the present invention are:

[0018] (1) The flame arrester shell strength test device described in the present invention has a pressure test structure on the test bench, and a fixing structure on the pressure test structure. The flame arrester shell body can be quickly fixed by the fixing structure, thereby improving the fixing efficiency of the flame arrester shell body. At the same time, flame arrester shell bodies of different sizes can be fixed, thereby improving the applicability of the test device. The pressure test structure is used to perform a pressure test on the outside of the flame arrester shell body to check whether the pressure resistance of the flame arrester shell body is qualified.

[0019] (2) The flame arrester shell strength test device described in the present invention has a sealing test structure on the test bench, which is used to test the sealing performance of the flame arrester shell body and whether there is crack leakage on the flame arrester shell body.

[0020] (3) The strength test device for a flame arrester shell described in the present invention has a tensile test structure on the pressure test structure, and a plug-in structure on the tensile test structure. The plug-in structure allows the tensile test structure to be plugged into a pressure plate to facilitate tensile test. The plug-in structure also allows the tensile test structure to be fixed to a gantry frame, thereby improving the storage effect. The tensile test structure allows the flame arrester shell body to be tested for tensile strength, thereby preventing the flame arrester shell body from being damaged due to thermal expansion and contraction of pipes connected at both ends during subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a strength test device for a flame arrester housing provided by the present invention;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0024] Figure 3 for Figure 1 An enlarged schematic diagram of the structure of part B is shown;

[0025] Figure 4 It is a schematic diagram of the connection structure between the test bench and the pressure test structure of the present invention;

[0026] Figure 5 for Figure 4 An enlarged schematic diagram of the C-section structure is shown;

[0027] Figure 6 for Figure 4 An enlarged schematic diagram of the D-section structure is shown;

[0028] Figure 7 for Figure 4 An enlarged schematic diagram of the structure of part E is shown;

[0029] Figure 8 It is a schematic diagram of the connection structure between the pull rope and the placement frame of the present invention;

[0030] Fig. 9 for Figure 8 The enlarged schematic diagram of the F part structure is shown;

[0031] Fig.10 It is a schematic diagram of the connection structure between the slide seat and the guide rod of the present invention.

[0032] In the figure: 1. test bench; 2. pressure test structure; 201. mounting seat; 202. pressure sensor; 203. gantry; 204. motor; 205. first screw; 206. slide seat; 207. guide rod; 208. hydraulic rod; 209. pressing plate; 210. mounting groove; 211. positioning rod; 3. fixing structure; 301. fixing frame; 302. sliding sleeve; 303. connecting strip; 304. pressing block; 305. positioning shaft; 306. second screw; 307. hand wheel; 4. sealing test structure; 401. booster pump; 402. water inlet pipe; 403. water outlet pipe; 404. water inlet hole; 40 5. First sealing groove; 406. First sealing ring; 407. Second sealing ring; 408. Second sealing groove; 5. Tension test structure; 501. Storage groove; 502. Connecting seat; 503. Pull rope; 504. First guide wheel; 505. Second guide wheel; 506. Placement frame; 507. Counterweight; 508. Limiting groove; 509. Half ring; 510. Buckle block; 511. Buckle groove; 6. Plug-in structure; 601. First clamping block; 602. Connecting plate; 603. Second clamping block; 604. First clamping slot; 605. Guide shaft; 606. Spring; 607. Second clamping slot; 7. Flame arrester housing body. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Fig. 9 and Fig.10 As shown, a flame arrester housing strength test device according to the present invention comprises a test bench 1, a pressure test structure 2 arranged on the test bench 1, a fixing structure 3 arranged on the pressure test structure 2, a sealing test structure 4 arranged on the test bench 1, a tension test structure 5 arranged on the pressure test structure 2, and a plug-in structure 6 arranged on the tension test structure 5;

[0035] The pressure test structure 2 includes a mounting seat 201 and a pressure sensor 202 mounted at the bottom of the mounting seat 201. The mounting seat 201 is slidably connected to the test bench 1, and the side of the pressure sensor 202 facing away from the mounting seat 201 is fixedly connected to the test bench 1.

[0036] The fixing structure 3 includes two fixing frames 301 and a sliding sleeve 302 slidably connected to the fixing frames 301, the mounting seat 201 is fixedly connected with two fixing frames 301, the sliding sleeve 302 is slidably connected with a connecting strip 303, the connecting strip 303 is fixedly connected with a pressing block 304, and the pressing block 304 is fixedly connected with two positioning shafts 305, the mounting seat 201 is placed with a flame arrester housing body 7, the positioning shaft 305 is plugged with a through hole on the flange at the bottom end of the flame arrester housing body 7, the fixing frame 301 is threadedly connected with a second screw 306, the end of the second screw 306 is rotatably connected with the sliding sleeve 302, and the second screw 306 is fixedly connected with a hand wheel 307;

[0037] The test bench 1 is fixedly connected with a gantry 203 with a U-shaped cross section, the gantry 203 is fixedly connected with a motor 204, the gantry 203 is rotatably connected with a first screw 205, the output end of the motor 204 is fixedly connected with the first screw 205, the first screw 205 is threadedly connected with a slide 206, the slide 206 is fixedly connected with a hydraulic rod 208, a pressing plate 209 is placed on the top of the flame arrester housing body 7, the pressing plate 209 is provided with a mounting groove 210, and the telescopic end of the hydraulic rod 208 is plugged into the mounting groove 210; a plurality of positioning rods 211 are arranged in a circumferential array on the pressing plate 209, and the positioning rods 211 are connected to the flame arrester. The through hole on the flange at the top of the firearm housing body 7 is plugged in; the gantry 203 is fixedly connected with a guide rod 207 arranged parallel to the first screw 205, and the slide seat 206 is slidably connected to the guide rod 207; when it is necessary to test the flame arrester housing body 7, first turn the hand wheel 307, the hand wheel 307 rotates to drive the second screw 306 to rotate, the second screw 306 rotates to drive the sliding sleeve 302 to slide upward on the fixed frame 301, the sliding sleeve 302 slides upward to drive the connecting strip 303 to slide upward, the connecting strip 303 slides upward and then drives the pressing block 304 to slide upward, at this time, the flame arrester housing body 7 is placed on the mounting seat 201, and then the hand wheel 30 is rotated in the opposite direction. 7, and then drive the sliding sleeve 302 to descend, drive the pressing block 304 to slide downward, and the positioning shaft 305 on the pressing block 304 is inserted into the through hole on the flange at the bottom end of the flame arrester housing body 7, thereby fixing the flame arrester housing body 7. When it is necessary to detect flame arrester housing bodies 7 of different sizes, different pressing blocks 304 and connecting strips 303 can be replaced. When replacing, it is only necessary to pull the connecting strip 303 out of the sliding sleeve 302. When performing external pressure detection, start the motor 204, the motor 204 drives the first screw 205 to rotate, and the first screw 205 drives the slide 206 to slide on the guide rod 207. When the slide 206 slides to the top of the flame arrester housing body 7 After that, place the pressure plate 209 matched with the flame arrester housing body 7 on the flange at the top of the flame arrester housing body 7, and align the positioning rod 211 with the through hole on the flange and insert it, then start the hydraulic rod 208, insert the telescopic end of the hydraulic rod 208 into the mounting groove 210, and then continue to extend the hydraulic rod 208, the increased pressure of the hydraulic rod 208 is transmitted to the mounting seat 201 through the flame arrester housing body 7, and fed back to the pressure sensor 202 through the mounting seat 201, and by observing the changes in the pressure data fed back by the pressure sensor 202, it can be judged whether the external pressure resistance of the flame arrester housing body 7 is qualified, and the flame arrester housing body 7 is subjected to uniform force during the pressure test, so the test is stable.

[0038] Specifically, Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the sealing test structure 4 includes a booster pump 401 and a water inlet pipe 402 fixedly connected to the booster pump 401, the test bench 1 is fixedly connected with the booster pump 401, the booster pump 401 is fixedly connected with a water outlet pipe 403, the mounting seat 201 is provided with a water inlet hole 404, the end of the water outlet pipe 403 away from the booster pump 401 is fixedly connected to the mounting seat 201, and the water outlet pipe 403 is communicated with the water inlet hole 404; a first sealing groove 405 is provided on the flange at the bottom end of the flame arrester housing body 7, a first sealing ring 406 is provided inside the first sealing groove 405, and the first sealing ring 406 conflicts with the mounting seat 201, and a second sealing groove 408 is provided on the flange at the top end of the flame arrester housing body 7, a second sealing ring 407 is provided inside the second sealing groove 408, and the second sealing ring 407 conflicts with the pressing plate 209; when the flame arrester needs to be tested, the flame arrester is tested. When the sealing of the shell body 7 is tested, the pressure test structure 2 can be started first to apply pressure to the flame arrester shell body 7, so that the second sealing groove 408 at the top of the flame arrester shell body 7 and the second sealing ring 407 are fully sealed, and the first sealing ring 406 at the bottom of the flame arrester shell body 7 and the first sealing groove 405 are fully sealed, and then the booster pump 401 is started, and the booster pump 401 is connected to the external water source through the water inlet pipe 402, and then the water is pumped into the internal pressurized water and enters the water inlet hole 404 through the water outlet pipe 403, and then enters the flame arrester shell body 7 from the water inlet hole 404 until it is completely filled, and then the booster pump 401 is continued to slowly fill with water and pressurize. After the pressurization reaches the standard test water pressure, it is continued for five minutes, and then the flame arrester shell body 7 is observed to seep cracks or permanent deformation. If not, it means that the sealing and internal pressure resistance of the flame arrester shell body 7 are qualified, otherwise it is unqualified.

[0039] Specifically, Figure 1 , Figure 3 , Figure 4 , Figure 6 Figure 7 , Figure 8 and Fig. 9As shown, the tension test structure 5 includes a storage slot 501 and a connection seat 502 slidably connected to the storage slot 501, the gantry 203 is provided with a storage slot 501, the connection seat 502 is fixedly connected with a pull rope 503, the gantry 203 is fixedly connected with a first guide wheel 504 and a second guide wheel 505, the pull rope 503 passes around the first guide wheel 504 and the second guide wheel 505, the end of the pull rope 503 away from the connection seat 502 is fixedly connected with a placement frame 506, and a counterweight block 507 is placed inside the placement frame 506; a plurality of the positioning rods 211 are provided with a limiting slot 508, and two semi-rings 509 are engaged in the plurality of limiting slots 508, one of the semi-rings 509 is provided with two buckle slots 511, and the other semi-ring 509 is provided with two buckle blocks 510, and the buckle blocks 510 are engaged with the buckle slots 511;

[0040] The plug-in structure 6 includes a first clamping block 601 and a connecting plate 602 fixedly connected to the first clamping block 601, two first clamping blocks 601 are symmetrically slidably connected to the connecting seat 502, the connecting plate 602 is slidably connected to the connecting seat 502, a second clamping block 603 is fixedly connected to the connecting plate 602, the second clamping block 603 is slidably connected to the connecting seat 502, a first clamping groove 604 is provided on the gantry 203, the second clamping block 603 is engaged with the first clamping groove 604, a spring 606 is fixedly connected between the connecting plate 602 and the connecting seat 502; two second clamping grooves 607 are provided on the pressing plate 209, the first clamping block 601 and the second clamping block 603 are engaged with each other, The cross-sections are all trapezoidal structures, and the guide shaft 605 runs through the interior of the spring 606. Both ends of the guide shaft 605 are fixedly connected to the interior of the connecting seat 502, and the connecting plate 602 is slidably connected to the guide shaft 605. When it is necessary to perform a tensile test on the flame arrester housing body 7, the hydraulic rod 208 is completely retracted, and then the motor 204 is started to move the slide seat 206 out of the top of the flame arrester housing body 7, and then the first clamping block 601 is pressed. The first clamping block 601 drives the connecting plate 602 to slide, the spring 606 is compressed, and the connecting plate 602 drives the second clamping block 603 not to engage with the first clamping groove 604 on the gantry 203. At this time, the connecting seat 502 can be pulled out from the storage groove 501. Then, the connecting seat 502 is inserted into the installation groove 210 on the pressing plate 209. Since the cross section of the first clamping block 601 is a trapezoidal structure, the first clamping block 601 will first retreat into the interior of the connecting seat 502 after contacting the pressing plate 209. Then, when the connecting seat 502 is continued to be inserted, it will be engaged into the second clamping groove 607 on the pressing plate 209 under the reset action of the spring 606, thereby fixing the connecting seat 502 and the pressing plate 209. Then, the two half rings 509 are inserted into the limiting groove 508 on the positioning rod 211, and the buckle block 510 on one half ring 509 is inserted into the buckle groove 511 on the other half ring 509, thereby fixing the flame arrester housing body 7 and the pressing plate 209. The bottom end of the flame arrester housing body 7 is fixed on the mounting seat 201 through the fixing structure 3. The mounting seat 201 can only slide downward but not upward due to the block set on the test bench 1. Therefore, after the connecting seat 502 is plugged in, a counterweight 507 can be added to the inside of the placement frame 506. The placement frame 506 pulls the pull rope 503 through gravity, the pull rope 503 pulls the connecting seat 502, and the connecting seat 502 pulls the pressure plate 209, thereby applying tension to the flame arrester housing body 7. After the mass of the counterweight 507 is added to the test standard mass, observe whether the surface of the flame arrester housing body 7 is deformed. The setting of the guide shaft 605 improves the sliding stability of the connecting plate 602 and avoids the deviation of the spring 606.

[0041] When the present invention is in use, first, when it is necessary to test the flame arrester housing body 7, the hand wheel 307 is rotated first, and the rotation of the hand wheel 307 drives the second screw rod 306 to rotate, and the rotation of the second screw rod 306 drives the sliding sleeve 302 to slide upward on the fixing frame 301, and the sliding sleeve 302 slides upward to drive the connecting strip 303 to slide upward, and the connecting strip 303 slides upward to drive the pressing block 304 to slide upward, at this time, the flame arrester housing body 7 is placed on the mounting seat 201, and then the hand wheel 307 is rotated in the opposite direction, thereby driving the sliding sleeve 302 to descend, driving the pressing block 304 to slide downward, and the positioning shaft 305 on the pressing block 304 is inserted into the through hole on the flange at the bottom end of the flame arrester housing body 7, thereby fixing the flame arrester housing body 7, and when it is necessary to test the flame arrester housing body 7 of different sizes, different pressing blocks 304 and connecting strips 303 can be replaced. When replacing, it is only necessary to pull the connecting strip 303 out of the sliding sleeve 302. Yes, when performing external pressure detection, the motor 204 is started, and the motor 204 drives the first screw 205 to rotate, and the first screw 205 drives the slide 206 to slide on the guide rod 207. When the slide 206 slides to the top of the flame arrester housing body 7, the pressure plate 209 adapted to the flame arrester housing body 7 is placed on the flange at the top of the flame arrester housing body 7, and the positioning rod 211 is aligned with the through hole on the flange and inserted, and then the hydraulic rod 208 is started, and the telescopic end of the hydraulic rod 208 is inserted into the mounting groove 210, and then the hydraulic rod 208 is continued to be extended. The increased pressure of the hydraulic rod 208 is transmitted to the mounting seat 201 through the flame arrester housing body 7, and is fed back to the pressure sensor 202 through the mounting seat 201. By observing the changes in the pressure data fed back by the pressure sensor 202, it is possible to judge whether the external pressure resistance of the flame arrester housing body 7 is qualified. When testing the pressure, the flame arrester housing body 7 is subjected to uniform force, so the test is stable.

[0042] Then, when it is necessary to test the sealing performance of the flame arrester housing body 7, the pressure test structure 2 can be started first to apply pressure to the flame arrester housing body 7, so that the second sealing groove 408 at the top of the flame arrester housing body 7 and the second sealing ring 407 are fully sealed, and the first sealing ring 406 at the bottom of the flame arrester housing body 7 and the first sealing groove 405 are fully sealed, and then the booster pump 401 is started, and the booster pump 401 is connected to the external water source through the water inlet pipe 402, and then the water is pumped to the inside to increase the pressure and then enters the inside of the water inlet hole 404 through the water outlet pipe 403, and then enters the inside of the flame arrester housing body 7 from the water inlet hole 404 until it is completely filled, and then the booster pump 401 is continued to slowly fill the water and increase the pressure. After the pressure is increased to the standard test water pressure, it is continued for five minutes, and then the flame arrester housing body 7 is observed to seep cracks or permanently deform. If not, it means that the sealing performance and internal pressure resistance of the flame arrester housing body 7 are qualified, otherwise it is unqualified;

[0043] Finally, when the flame arrester housing body 7 needs to be tested for tensile strength, the hydraulic rod 208 is fully retracted, and then the motor 204 is started to move the slide seat 206 out of the top of the flame arrester housing body 7, and then the first clamping block 601 is pressed, the first clamping block 601 drives the connecting plate 602 to slide, the spring 606 is compressed, and the connecting plate 602 drives the second clamping block 603 to not engage with the first clamping groove 604 on the gantry 203, and the connecting seat can be pulled out from the storage groove 501 at this time. 502, and then insert the connecting seat 502 into the installation groove 210 on the pressing plate 209. Since the cross section of the first clamping block 601 is a trapezoidal structure, the first clamping block 601 will first retreat into the inside of the connecting seat 502 after contacting the pressing plate 209. Then, when the connecting seat 502 is continuously inserted, it will be engaged into the second clamping groove 607 on the pressing plate 209 under the reset action of the spring 606, thereby fixing the connecting seat 502 and the pressing plate 209. Then, the two half rings 509 are inserted into the connecting seat 502. The cam 506 is inserted into the limiting groove 508 on the positioning rod 211, and the buckle block 510 on one half ring 509 is inserted into the buckle groove 511 on the other half ring 509, thereby fixing the flame arrester housing body 7 and the pressure plate 209. Since the bottom end of the flame arrester housing body 7 is fixed to the mounting seat 201 through the fixing structure 3, the mounting seat 201 can only slide downward due to the block set on the test bench 1, and cannot slide upward. Therefore, after the connecting seat 502 is plugged in, a counterweight block 507 can be added to the inside of the placement frame 506. The placement frame 506 pulls the pull rope 503 by gravity, the pull rope 503 pulls the connecting seat 502, and the connecting seat 502 pulls the pressure plate 209, thereby applying tension to the flame arrester housing body 7. After the mass of the counterweight block 507 is added to the detection standard mass, observe whether the surface of the flame arrester housing body 7 is deformed. The setting of the guide shaft 605 improves the sliding stability of the connecting plate 602 and avoids the deviation of the spring 606.

[0044] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A strength test device for a flame arrester housing, characterized in that: The invention comprises a test bench (1), a pressure test structure (2) arranged on the test bench (1), a fixing structure (3) arranged on the pressure test structure (2), a sealing test structure (4) arranged on the test bench (1), a tension test structure (5) arranged on the pressure test structure (2), and a plug-in structure (6) arranged on the tension test structure (5); The pressure test structure (2) comprises a mounting seat (201) and a pressure sensor (202) mounted on the bottom end of the mounting seat (201); the mounting seat (201) is slidably connected to the test bench (1); and a side of the pressure sensor (202) facing away from the mounting seat (201) is fixedly connected to the test bench (1); The fixing structure (3) comprises two fixing frames (301) and a sliding sleeve (302) slidably connected to the fixing frames (301); the two fixing frames (301) are fixedly connected to the mounting seat (201); a connecting strip (303) is slidably connected to the sliding sleeve (302); a pressing block (304) is fixedly connected to the connecting strip (303); two positioning shafts (305) are fixedly connected to the pressing block (304); a flame arrester housing body (7) is placed on the mounting seat (201); the positioning shaft (305) is plugged into a through hole on a flange at the bottom end of the flame arrester housing body (7); a second screw rod (306) is threadedly connected to the fixing frame (301); an end of the second screw rod (306) is rotatably connected to the sliding sleeve (302); and a hand wheel (307) is fixedly connected to the second screw rod (306); A gantry (203) with a U-shaped cross section is fixedly connected to the test bench (1), a motor (204) is fixedly connected to the gantry (203), a first screw (205) is rotatably connected to the gantry (203), an output end of the motor (204) is fixedly connected to the first screw (205), a slide seat (206) is threadedly connected to the first screw (205), a hydraulic rod (208) is fixedly connected to the slide seat (206), a pressing plate (209) is placed at the top of the flame arrester housing body (7), a mounting groove (210) is provided on the pressing plate (209), and a telescopic end of the hydraulic rod (208) is plugged into the mounting groove (210); a plurality of positioning rods (211) are provided in a circumferential array on the pressing plate (209), and the positioning rods (211) are plugged into through holes on a flange at the top of the flame arrester housing body (7).

2. A flame arrester housing strength test device according to claim 1, characterized in that: A guide rod (207) arranged parallel to the first screw rod (205) is fixedly connected to the gantry (203), and the slide seat (206) is slidably connected to the guide rod (207).

3. A flame arrester housing strength test device according to claim 1, characterized in that: The sealing test structure (4) comprises a booster pump (401) and a water inlet pipe (402) fixedly connected to the booster pump (401); the test bench (1) is fixedly connected to the booster pump (401); the booster pump (401) is fixedly connected to the water outlet pipe (403); the mounting seat (201) is provided with a water inlet hole (404); an end of the water outlet pipe (403) facing away from the booster pump (401) is fixedly connected to the mounting seat (201); and the water outlet pipe (403) is in communication with the water inlet hole (404).

4. A flame arrester housing strength test device according to claim 3, characterized in that: A first sealing groove (405) is provided on the flange at the bottom end of the flame arrester housing body (7), a first sealing ring (406) is provided inside the first sealing groove (405), and the first sealing ring (406) is in contact with the mounting seat (201); a second sealing groove (408) is provided on the flange at the top end of the flame arrester housing body (7), a second sealing ring (407) is provided inside the second sealing groove (408), and the second sealing ring (407) is in contact with the pressure plate (209).

5. A flame arrester housing strength test device according to claim 1, characterized in that: The tension test structure (5) comprises a storage slot (501) and a connection seat (502) slidably connected to the inside of the storage slot (501); the gantry (203) is provided with the storage slot (501); the connection seat (502) is fixedly connected to a pull rope (503); the gantry (203) is fixedly connected to a first guide wheel (504) and a second guide wheel (505); the pull rope (503) passes around the first guide wheel (504) and the second guide wheel (505); one end of the pull rope (503) facing away from the connection seat (502) is fixedly connected to a placement frame (506); a counterweight (507) is placed inside the placement frame (506).

6. A flame arrester housing strength test device according to claim 5, characterized in that: A plurality of the positioning rods (211) are each provided with a limiting groove (508), and two half rings (509) are engaged in the plurality of limiting grooves (508), wherein one of the half rings (509) is provided with two buckling grooves (511), and another half ring (509) is provided with two buckling blocks (510), and the buckling blocks (510) are engaged with the buckling grooves (511).

7. A flame arrester housing strength test device according to claim 5, characterized in that: The plug-in structure (6) comprises a first clamping block (601) and a connecting plate (602) fixedly connected to the first clamping block (601); two first clamping blocks (601) are symmetrically slidably connected to the connecting seat (502); the connecting plate (602) is slidably connected to the connecting seat (502); a second clamping block (603) is fixedly connected to the connecting plate (602); the second clamping block (603) is slidably connected to the connecting seat (502); a first clamping groove (604) is provided on the gantry (203); the second clamping block (603) is engaged with the first clamping groove (604); and a spring (606) is fixedly connected between the connecting plate (602) and the connecting seat (502).

8. A flame arrester housing strength test device according to claim 7, characterized in that: The pressure plate (209) is provided with two second slots (607); the cross-sections of the first clamping block (601) and the second clamping block (603) are both trapezoidal structures; a guide shaft (605) passes through the interior of the spring (606); both ends of the guide shaft (605) are fixedly connected to the interior of the connecting seat (502); and the connecting plate (602) is slidably connected to the guide shaft (605).

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