Explosion-proof test device for small-sized explosion-proof equipment

Abstract

The utility model belongs to the technical field of explosion-proof tests, and particularly relates to an explosion-proof test device for small-sized explosion-proof equipment, which comprises an explosion-proof tank, the outer wall of the explosion-proof tank is provided with a purging air inlet, an air distribution inlet, an air outlet I and an air outlet II, and the outer wall of the explosion-proof tank is fixedly connected with a push rod. An auxiliary test assembly is arranged in the explosion-proof tank, a pressure detector is fixedly mounted in the inner wall of the explosion-proof tank, and the auxiliary test assembly comprises a protective seat. According to the explosion-proof test device for the small-sized explosion-proof equipment, the reciprocating screw rod is driven to rotate by rotating the handle, and then the moving block is driven to move along the screw rod, so that the position of the spray head fixedly connected with the moving block can be flexibly adjusted, and the flexible adjustment capability can effectively reduce the blowing and gas distribution time and improve the test efficiency; more uniform gas distribution in the test process can be ensured, and the accuracy and the reliability of a test result can be improved.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof testing technology, specifically to an explosion-proof testing device for small explosion-proof equipment. Background Technology

[0002] Explosion-proof devices are safety equipment used in industrial explosion-hazardous areas. Their main principle is to prevent the propagation of explosions by isolating and preventing the generation of sparks, heat transfer, and ensuring that chain reactions do not occur. For small explosion-proof devices, conducting explosion-proof testing is a crucial step in ensuring their safety performance. Explosion-proof testing equipment allows for rigorous testing of small explosion-proof devices, verifying whether they meet relevant safety standards and regulations.

[0003] Currently, existing explosion-proof testing devices generally require purging and gas mixing during use. Purging aims to remove impurities and residual gases from the equipment to ensure a pure testing environment. During explosion-proof testing, air, moisture, dust, or other impurities may remain inside the equipment. These impurities can affect the concentration and distribution of the explosive gas mixture, thus impacting the accuracy of the test results. Purging effectively removes these impurities, creating a favorable environment for subsequent gas mixing and explosion testing. Gas mixing aims to form an explosive gas mixture with a specific concentration and distribution within the equipment. The concentration and distribution of the explosive gas mixture significantly influence the test results. If the concentration is too low or the distribution is uneven, an explosion may not occur or may be insufficient in power, affecting the accuracy of the test results. However, in practical use, the purging and gas mixing inlets are fixed, resulting in lengthy purging and gas mixing times. Therefore, this paper proposes an explosion-proof testing device for small explosion-proof equipment. Utility Model Content

[0004] The main objective of this invention is to provide an explosion-proof testing device for small explosion-proof equipment, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes an explosion-proof testing device for small explosion-proof equipment, comprising an explosion-proof container. The outer wall of the explosion-proof container has a purge inlet, a distribution inlet, an outlet (one), and an outlet (two). A push rod is fixedly connected to the outer wall of the explosion-proof container. An auxiliary testing assembly is installed inside the explosion-proof container, and a pressure detector is fixedly installed in the inner wall of the explosion-proof container. The auxiliary testing assembly includes:

[0006] A protective seat, wherein a reciprocating screw is rotatably connected to the inner surface of the protective seat, and a handle is fixedly connected to the outer wall of the explosion-proof container, and the handle is fixedly connected to the reciprocating screw;

[0007] A movable block is threadedly connected to a reciprocating lead screw. An installation sleeve is fixedly connected to the outer wall of the movable block, and a nozzle is fixedly installed in the installation sleeve.

[0008] The nozzle is connected to a connecting pipe. By turning the handle, the handle drives the reciprocating screw to rotate, which in turn drives the moving block to move, so that the position of the nozzle can be adjusted, thereby adjusting the purging and gas distribution range and effectively reducing the purging and gas distribution time.

[0009] Preferably, a multi-stage telescopic baffle is fixedly connected to the outer wall of the nozzle, a small cylinder is fixedly connected to the outer wall of the moving block, and a positioning rod is fixedly connected to the outer wall of the protective seat. The positioning rod passes through the swing plate and is rotatably connected to the swing plate. By moving the moving block, the small cylinder can be driven to move. As the small cylinder passes through the swing plate, the swing plate can rotate around the central axis of the positioning rod, thereby realizing the swing of the swing plate and further accelerating the airflow.

[0010] Preferably, the small cylinder, mounting sleeve, nozzle, multi-stage telescopic baffle and connecting pipe are provided in two sets, and the two sets of small cylinder, mounting sleeve, nozzle, multi-stage telescopic baffle and connecting pipe are symmetrically arranged with the center line of the moving block as the axis of symmetry. By using the multi-stage telescopic baffle, it is possible to prevent impurities from passing through the groove of the fixed plate two during the sample explosion test.

[0011] Preferably, one set of the connecting pipes is connected to the purge air inlet, and the other set of the connecting pipes is connected to the gas distribution air inlet.

[0012] Preferably, the explosion-proof container is provided with a switch cover at the end away from the push rod, and a fixing plate one and a fixing plate two are fixedly connected to the inner wall of the explosion-proof container, and the protective seat is fixedly connected to the lower side of the fixing plate two.

[0013] Preferably, a guide rail is fixedly connected to the upper side of the fixing plate, and a placement platform is slidably connected to the guide rail. The placement platform is fixed to the push rod.

[0014] This invention provides an explosion-proof testing device for small explosion-proof equipment. It has the following advantages:

[0015] (1) The explosion-proof test device for small explosion-proof equipment drives the reciprocating screw to rotate by rotating the handle, which in turn drives the moving block to move along the screw. This design allows the nozzle, which is fixedly connected to the moving block, to flexibly adjust its position. This flexible adjustment capability can not only effectively reduce the time for purging and gas distribution and improve the test efficiency, but also ensure that the gas distribution is more uniform during the test, which helps to improve the accuracy and reliability of the test results.

[0016] (2) The explosion-proof test device for small explosion-proof equipment moves by moving the moving block. The small cylinder pushes the swing plate to swing around the positioning rod as the central axis. This swinging action helps to accelerate the air flow inside the explosion-proof container, making the purging and gas distribution process more efficient. At the same time, the use of multi-stage telescopic baffles can effectively prevent impurities from passing through the slot of the fixed plate two during the sample explosion test, ensuring the purity of the test environment and the accuracy of the test results. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall three-dimensional internal structure of this utility model. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of the overall three-dimensional internal structure of this utility model. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the auxiliary test component structure of this utility model. Figure 1 ;

[0022] Figure 5 This is a schematic diagram of the auxiliary test component structure of this utility model. Figure 2 .

[0023] Explanation of icon numbers:

[0024] 1. Explosion-proof container; 2. Purge air inlet; 3. Gas distribution air inlet; 4. Air outlet one; 5. Air outlet two; 6. Push rod; 7. Auxiliary test assembly; 101. Switch cover; 102. Fixing plate one; 103. Guide rail; 104. Placement platform; 105. Fixing plate two; 71. Protective seat; 72. Reciprocating screw; 73. Handle; 74. Moving block; 75. Small cylinder; 76. Mounting sleeve; 77. Nozzle; 78. Multi-stage telescopic baffle; 79. Connecting pipe; 710. Positioning rod; 711. Swing plate.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 This utility model proposes an explosion-proof testing device for small explosion-proof equipment, including an explosion-proof container 1. The outer wall of the explosion-proof container 1 is provided with a purge air inlet 2, a gas distribution air inlet 3, an air outlet 4, and an air outlet 5. A push rod 6 is fixedly connected to the outer wall of the explosion-proof container 1. An auxiliary testing component 7 is provided inside the explosion-proof container 1. A pressure detector is fixedly installed in the inner wall of the explosion-proof container 1.

[0028] In this embodiment of the present invention, in order to facilitate the placement of the perforated sample into the explosion-proof container 1, specifically, a switch cover 101 is provided at the end of the explosion-proof container 1 away from the push rod 6. A fixing plate 102 and a fixing plate 105 are fixedly connected to the inner wall of the explosion-proof container 1. A protective seat 71 is fixedly connected to the lower side of the fixing plate 105. A guide rail 103 is fixedly connected to the upper side of the fixing plate 102. A placement platform 104 is slidably connected to the guide rail 103. The placement platform 104 is fixed to the push rod 6. By pushing the push rod 6, the push rod 6 can push out the placement platform 104, thereby facilitating the worker to place the perforated sample on the placement platform 104. Then, by pushing the push rod 6 again, the push rod 6 moves the placement platform 104 into the explosion-proof container 1.

[0029] Furthermore, to improve the purging and gas mixing effect and reduce the purging and gas mixing time, the auxiliary test assembly 7 specifically includes a protective seat 71, a moving block 74, and a connecting pipe 79. A reciprocating screw 72 is rotatably connected to the inner surface of the protective seat 71. A handle 73 is fixedly connected to the outer wall of the explosion-proof container 1, and the handle 73 is fixedly connected to the reciprocating screw 72. The moving block 74 is threadedly connected to the reciprocating screw 72. An installation sleeve 76 is fixedly connected to the outer wall of the moving block 74, and a nozzle 77 is fixedly installed in the installation sleeve 76. The connecting pipe 79 communicates with the nozzle 77. Two sets of each of the installation sleeve 76, nozzle 77, and connecting pipe 79 are provided. The mounting sleeve 76, nozzle 77, and connecting pipe 79 are all symmetrically arranged with the center line of the moving block 74 as the axis of symmetry. One set of connecting pipes 79 is connected to the purge inlet 2, and the other set of connecting pipes 79 is connected to the gas distribution inlet 3. By rotating the handle 73, the handle 73 drives the reciprocating screw 72 to rotate, which in turn drives the moving block 74 to move, so that the position of the nozzle 77 can be adjusted, thereby realizing the adjustment of the purging and gas distribution range. This flexible adjustment capability can not only effectively reduce the purging and gas distribution time and improve the test efficiency, but also ensure that the gas distribution during the test is more uniform, which helps to improve the accuracy and reliability of the test results.

[0030] Furthermore, to further accelerate airflow, specifically, a multi-stage telescopic baffle 78 is fixedly connected to the outer wall of the nozzle 77, a small cylinder 75 is fixedly connected to the outer wall of the moving block 74, and a positioning rod 710 is fixedly connected to the outer wall of the protective seat 71. The positioning rod 710 passes through the swing plate 711 and is rotatably connected to the swing plate 711. Two sets of small cylinders 75 and multi-stage telescopic baffles 78 are provided, and both sets of small cylinders 75 and multi-stage telescopic baffles 78 are symmetrically arranged about the center line of the moving block 74. As the moving block 74 moves, the small cylinders 75 push the swing plate 711 to swing about the positioning rod 710 as the central axis. This swinging action helps to accelerate the airflow inside the explosion-proof canister 1, making the purging and gas distribution process more efficient. At the same time, the use of multi-stage telescopic baffles 78 can effectively prevent impurities from passing through the slot of the fixed plate 105 during sample explosion tests, ensuring the purity of the test environment and the accuracy of the test results.

[0031] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install and complete the circuit debugging work according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0032] In use, first push the push rod 6, which will push out the placement platform 104. Then place the perforated sample on the placement platform 104, and push the push rod 6 again. The push rod 6 will move the placement platform 104 into the explosion-proof container 1. Then turn the handle 73, which will drive the reciprocating screw 72 to rotate, thereby moving the moving block 74 to adjust the position of the nozzle 77, thus adjusting the purging and gas distribution range. During this process, as the moving block 74 moves, the small cylinder 75 will push the swing plate 711 to swing around the positioning rod 710 as the central axis. This swinging action helps to accelerate the air flow inside the explosion-proof container 1. After the gas distribution is completed, the sample is detonated to realize the explosion-proof test operation.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A test apparatus for explosion-proof equipment for small explosion-proof devices, comprising an explosion-proof container (1), characterized in that: The explosion-proof container (1) has a purge inlet (2), a gas distribution inlet (3), an outlet (4), and an outlet (5) on its outer wall. A push rod (6) is fixedly connected to the outer wall of the explosion-proof container (1). An auxiliary test assembly (7) is installed inside the explosion-proof container (1). A pressure detector is fixedly installed in the inner wall of the explosion-proof container (1). The auxiliary test assembly (7) includes: A protective seat (71) is provided, and a reciprocating screw (72) is rotatably connected to the inner surface of the protective seat (71). A handle (73) is fixedly connected to the outer wall of the explosion-proof can (1), and the handle (73) is fixedly connected to the reciprocating screw (72). A movable block (74) is threadedly connected to a reciprocating lead screw (72). An installation sleeve (76) is fixedly connected to the outer wall of the movable block (74), and a nozzle (77) is fixedly installed in the installation sleeve (76). and a connecting pipe (79), which is connected to the nozzle (77).

2. The explosion-proof testing device for small explosion-proof equipment according to claim 1, characterized in that: A multi-stage telescopic baffle (78) is fixedly connected to the outer wall of the nozzle (77), a small cylinder (75) is fixedly connected to the outer wall of the moving block (74), and a positioning rod (710) is fixedly connected to the outer wall of the protective seat (71). The positioning rod (710) passes through the swing plate (711) and is rotatably connected to the swing plate (711).

3. The explosion-proof testing device for small explosion-proof equipment according to claim 2, characterized in that: The small cylinder (75), mounting sleeve (76), nozzle (77), multi-stage telescopic baffle (78) and connecting pipe (79) are all provided in two sets, and the two sets of the small cylinder (75), mounting sleeve (76), nozzle (77), multi-stage telescopic baffle (78) and connecting pipe (79) are symmetrically arranged with the center line of the moving block (74) as the axis of symmetry.

4. The explosion-proof testing device for small explosion-proof equipment according to claim 3, characterized in that: One set of the connecting pipes (79) is connected to the purge inlet (2), and the other set of the connecting pipes (79) is connected to the gas distribution inlet (3).

5. The explosion-proof testing device for small explosion-proof equipment according to claim 1, characterized in that: The explosion-proof container (1) is provided with a switch cover (101) at the end away from the push rod (6). A fixing plate one (102) and a fixing plate two (105) are fixedly connected to the inner wall of the explosion-proof container (1). The protective seat (71) is fixedly connected to the lower side of the fixing plate two (105).

6. The explosion-proof testing device for small explosion-proof equipment according to claim 5, characterized in that: A guide rail (103) is fixedly connected to the upper side of the fixed plate (102), and a placement platform (104) is slidably connected to the guide rail (103). The placement platform (104) is fixed to the push rod (6).

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