Fuel gas fireproof structure

Abstract

The utility model discloses a fuel gas fireproof structure which comprises a connecting pipe and a fireproof box, the connecting pipe is communicated with the interior of the fireproof box, the fireproof box is communicated with a fuel gas pipeline, a heat conduction component and a heating expansion component are arranged in the fireproof box, one end of the heat conduction component is connected with the inner side wall of the fireproof box, and the other end of the heat conduction component is connected with the heating expansion component. The heating expansion component is connected with a movement assembly, the movement assembly is connected with a sealing assembly, the fireproof box is communicated with the connecting pipe in the normal temperature state, and the heating expansion component drives the movement assembly to move in the overheating state, so that the sealing assembly blocks the connecting pipe. According to the gas fireproof structure, the technical problem that the self-closing valve fails due to the fact that the magnetic block in the gas self-closing valve is affected by high temperature can be solved, plugging of the connecting pipe is achieved, it is avoided that backfire enters the connecting pipe to damage the magnetic force of the self-closing valve, the gas safety of residents is guaranteed, and personal and property losses are avoided.

Description

Technical Field

[0001] The present application is used in the field of gas fire protection technology, and in particular relates to a gas fire protection structure. Background Art

[0002] In some families, the gas stove has not been replaced for a long time or a lower-quality gas stove is used. If the sealing structure of the gas stove has a short service life or the sealing effect is poor, this will lead to a safety hazard of "flashback" every time the gas is used. Of course, because a self-closing valve is provided, after the "flashback" phenomenon occurs at the hose, due to pressure problems, the self-closing valve will automatically close before the flashback enters the pipeline, but its magnetic force is prone to disorder in a high-temperature environment, resulting in errors in the initially set magnetic adsorption value. After the magnetic force is disordered, the safety performance of the self-closing valve is no longer so reliable, and long-term and frequent flashbacks can easily cause fires and other safety accidents. Utility Model Content

[0003] The purpose of the present application is to solve at least one of the technical problems existing in the prior art and to provide a gas fire prevention structure which can ensure the safety of gas use.

[0004] The technical solution adopted by this application to solve its technical problem is:

[0005] The gas fireproof structure includes a connecting pipe and a fireproof box, the connecting pipe is connected to the inside of the fireproof box, the fireproof box is connected to the gas pipeline, and a heat-conducting component and a heat-expanding component are arranged in the fireproof box. One end of the heat-conducting component is connected to the inner wall of the fireproof box, and the other end is connected to the heat-expanding component. The heat-expanding component is connected to a moving component, and a sealing component is connected to the moving component. Under normal temperature, the fireproof box is connected to the connecting pipe, and under overheating, the heat-expanding component drives the moving component to move, so that the sealing component blocks the connecting pipe.

[0006] In some embodiments of the present application, a fixed component is provided inside the fireproof box, the fixed component is connected to the inner wall of the fireproof box, a detection cavity is provided inside the fixed component, the moving assembly includes a lifting block and a first moving block capable of moving in a height direction, a lifting channel cooperating with the first moving block is provided inside the fireproof box, the first moving block is provided on the top of the heat-expandable component, and the lifting block can be lifted and lowered with the first moving block.

[0007] In some embodiments of the present application, a dovetail groove is provided on the inner wall of the detection cavity, the first moving block is a dovetail block slidably connected to the dovetail groove, a first compression spring is provided under the lifting block, and a blocking component is provided on the first moving block for preventing the lifting block from rising.

[0008] In some embodiments of the present application, a sealing cover is provided at the bottom of the fireproof box, a guide rod is fixedly connected to the inner bottom surface of the sealing cover, a U-shaped rod is provided inside the sealing cover, a guide cylinder cooperating with the U-shaped rod is provided inside the detection chamber, the guide cylinder is fixedly connected to the fixed component, one end of the U-shaped rod extends into the lifting channel and is connected to the lifting block, and the other end passes through the guide cylinder and is connected to the blocking component, the first compression spring is provided between the bottom end of the U-shaped rod and the inner bottom surface of the sealing cover, and the first compression spring is sleeved on the guide rod.

[0009] In some embodiments of the present application, two sealing blocks are provided on the inner wall of the fireproof box, the connecting pipe is clamped between the two sealing blocks, the sealing assembly includes a first connecting component, a blocking block for blocking the connecting pipe and a second moving block slidably connected to the fixed component, one end of the first connecting component is connected to the lifting block, and the other end is connected to the second moving block, and the blocking block and the second moving block are slidably connected along the horizontal direction.

[0010] In some embodiments of the present application, a limiting portion is provided on the second moving block, a first sliding groove cooperating with the limiting portion is provided on the blocking block, a second compression spring is provided between the blocking block and the limiting portion, and the second compression spring is located in the first sliding groove.

[0011] In some embodiments of the present application, a second connecting component is provided in the lifting channel, one end of the second connecting component is connected to the lifting block, and the other end is fixedly connected to the third moving block, a second sliding groove for lifting the third moving block is provided on the inner side wall of the lifting channel, an air suction cavity is provided in the third moving block, an air suction hole connected to the air suction cavity is provided on the third moving block, and the air suction cavity is connected to the gas pipeline through the air suction hole.

[0012] In some embodiments of the present application, a negative pressure tank is provided in the sealing cover, and dry powder is provided in the negative pressure tank to form negative pressure. The negative pressure tank is connected to the third motion block through a cannula assembly, and the cannula assembly includes a first cannula and a second cannula. A slot is provided on the bottom surface of the lifting channel, and the second cannula is installed on the lifting channel and connected to the slot. A mounting hole matching the second cannula is provided on the slot, one end of the first cannula extends into the negative pressure tank, and the other end is connected to the second cannula through the slot, one end of the second cannula is connected to the suction cavity, and the other end extends into the mounting hole.

[0013] In some embodiments of the present application, a self-closing valve is provided on the outside of the fireproof box, the fireproof box and the self-closing valve are respectively arranged at two ends of the connecting pipe, and the connecting pipe is connected to the self-closing valve.

[0014] In some embodiments of the present application, the self-closing valve is detachably connected to the fireproof box, a clamping block is fixedly connected to one side of the fireproof box, and a clamping groove cooperating with the clamping block is provided on one side of the self-closing valve.

[0015] One of the above technical solutions has at least one of the following advantages or beneficial effects: the gas fire protection structure can solve the technical problem that the internal magnetic block of the gas self-closing valve is affected by high temperature and causes the self-closing valve to malfunction. When in use, the fire protection box is installed on one side of the self-closing valve. By installing the fire protection box with anti-backfire function, when backfire occurs, the heat is transferred to the heat-expanding components through the heat-conducting components, causing the heat-expanding components to collide due to heat, thereby causing the moving parts to move, directly realizing the blocking of the connecting pipe, preventing backfire from entering the connecting pipe and causing damage to the magnetic force of the self-closing valve, thereby ensuring the gas safety of residents and avoiding personal and property losses.

[0016] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0019] Figure 2 yes Figure 1 Enlarged view of point C in the middle;

[0020] Figure 3 yes Figure 1 Cross-sectional view at AA in the middle;

[0021] Figure 4 yes Figure 3 Cross-sectional view at BB in the middle. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0023] In the present application, if there is a description of directions (up, down, left, right, front and back), it is only for the convenience of describing the technical solution of the present application, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0024] In this application, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of this application, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In this application, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected, detachably connected, or integrally formed; they can be mechanically connected, electrically connected, or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in this application in combination with the specific content of the technical solution.

[0026] in, Figure 3 and Figure 4 The reference direction coordinate system of the embodiment of the present application is given. Figure 3 and Figure 4 The embodiment of the present application is described with reference to the direction shown.

[0027] The embodiment of the present application provides a gas fire protection structure, see Figures 1 to 4, including a connecting pipe 100 and a fireproof box 200, the connecting pipe 100 is connected to the inside of the fireproof box 200, the fireproof box 200 is connected to the gas pipeline 300, and a heat-conducting component 210 and a heat-expanding component 220 are arranged in the fireproof box 200, one end of the heat-conducting component 210 is connected to the inner wall of the fireproof box 200, and the other end is connected to the heat-expanding component 220, the heat-expanding component 220 is connected to a moving component 230, and the moving component 230 is connected to a sealing component 240. Under normal temperature, the fireproof box 200 is connected to the connecting pipe 100, and under overheating, the heat-expanding component 220 drives the moving component 230 to move. The sealing component 240 blocks the connecting pipe 100. The gas fireproof structure can solve the technical problem that the internal magnetic block of the gas self-closing valve is affected by high temperature and causes the self-closing valve to malfunction. When in use, the fireproof box is installed on one side of the self-closing valve. By installing the fireproof box with anti-backfire function, when backfire occurs, the heat is transferred to the heat-expanding component 220 through the heat-conducting component 210, causing the heat-expanding component 220 to collide with the heat, thereby causing the moving component 230 to move, and directly achieve the connection pipe 100 The sealing is achieved to prevent the backfire from entering the connecting pipe 100 and causing the magnetic force of the self-closing valve to be damaged, thereby ensuring the gas safety of residents and avoiding personal and property losses.

[0028] The fireproof box 200 is provided with a fixed component 400, which is connected to the inner wall of the fireproof box 200, and a detection cavity 410 is provided in the fixed component 400. The moving component 230 includes a lifting block 231 and a first moving block 232 that can move along the height direction. The fireproof box 200 is provided with a lifting channel 233 that cooperates with the first moving block 232. The first moving block 232 is arranged on the top of the heat-expandable component 220, and the lifting block 231 can be lifted and lowered with the first moving block 232.

[0029] A dovetail groove 411 is provided on the inner wall of the detection chamber 410, and the first motion block 232 is a dovetail block slidably connected to the dovetail groove 411. A first compression spring 234 is provided below the lifting block 231, and a blocking component 235 for hindering the lifting block 231 from rising is provided on the first motion block 232. The heat-conducting component 210 is a T-shaped heat-conducting plate, and a return spring 413 is provided in the dovetail groove 411. The blocking component 235 includes two baffles, and a return-shaped mounting block 414 for installing a heat-expandable component is provided between the two baffles. The heat-expandable component includes a heat-expandable airbag, and the heat-expandable airbag is filled with heat-expandable gas. After the heat-expandable component is heated and expanded, the two first motion blocks 232 rise, and the two baffles no longer restrict the lifting block 231, thereby allowing the lifting block to rise. It can be understood that the first motion block 232 can also be directly connected to the lifting block 231 to achieve the blocking of the connecting pipe 100.

[0030] The bottom of the fireproof box 200 is provided with a sealing cover 500, and a guide rod 510 is fixedly connected to the inner bottom surface of the sealing cover 500. A U-shaped rod 520 is provided in the sealing cover 500, and a guide cylinder 412 cooperating with the U-shaped rod is provided in the detection chamber 410. The guide cylinder 412 is fixedly connected to the fixing component 400. One end of the U-shaped rod 520 extends into the lifting channel 233 and is connected to the lifting block 231, and the other end passes through the guide cylinder 412 and is connected to the blocking component 235. The first compression spring 234 is provided on the U-shaped rod 5 The first compression spring 234 is sleeved on the guide rod 510 between the bottom end of the fireproof box 20 and the inner bottom surface of the sealing cover 500, the bottom outer wall of the lifting block 231 is inclined, the cross-section of the lifting block is circular, and a guide groove 290 is provided on the inner top surface of the fireproof box 200. The top end of the lifting block 231 extends into the guide groove 290 and is slidably connected thereto, and a slidably connected pressure rod 236 is inserted into the top of the fireproof box, and the bottom end of the pressure rod 236 is fixedly connected to the top of the lifting block 231, and the guide rod 510 is a T-shaped rod.

[0031] Two sealing blocks 250 are provided on the inner wall of the fireproof box 200, and the connecting pipe 100 is clamped between the two sealing blocks 250. The sealing assembly 240 includes a first connecting component 241, a blocking block 242 for sealing the connecting pipe 100, and a second moving block 243 slidably connected to the fixed component 400. One end of the first connecting component 241 is connected to the lifting block 231, and the other end is connected to the second moving block 243. The blocking block 242 and the second moving block 243 are slidably connected in the horizontal direction. The blocking block 242 is arc-shaped. The first connecting component 241 is fixedly connected to the lifting block 231 by a first inclined block 248, and a spring 249 is sleeved on the first connecting component 241.

[0032] A limiting portion 244 is provided on the second moving block 243, a first sliding groove 245 cooperating with the limiting portion 244 is provided on the blocking block 242, a second compression spring 246 is provided between the blocking block 242 and the limiting portion 244, the second compression spring 246 is located in the first sliding groove 245, the limiting portion 244 is T-shaped, and the cross-section is square, the wide end of the limiting portion 244 is slidably connected to the blocking block 242, and the narrow end of the limiting portion 244 is fixedly connected to the second moving block 243.

[0033] A second connecting component 260 is provided in the lifting channel 233, one end of the second connecting component 260 is connected to the lifting block 231, and the other end is fixedly connected to the third moving block 270. A second slide groove 247 for lifting and lowering the third moving block 270 is provided on the inner side wall of the lifting channel 233. An air suction chamber 271 is provided in the third moving block 270, and an air suction hole 272 connected to the air suction chamber 271 is provided on the third moving block 270. The air suction chamber 271 is connected to the gas pipeline 300 through the air suction hole 272. Two second slide grooves 247 are symmetrically provided in the lifting channel 233, and a stabilizing sleeve 261 is fixedly connected between the two sides of each second slide groove 247. The second connecting component 260 passes through the stabilizing sleeve 261, and a spring 262 is sleeved on the second connecting component 260. A sealing groove for sealing the third moving block 270 is provided on one side of the second slide groove 247. During the movement of the third moving block 270, the air suction chamber 271 is ensured to be in a sealed state.

[0034] A negative pressure tank 530 is provided in the sealing cover 500, and dry powder is provided in the negative pressure tank 530 to form negative pressure. The negative pressure tank 530 is connected to the third moving block 270 through a cannula assembly 540. The cannula assembly 540 includes a first cannula 541 and a second cannula 542. A slot 550 is provided on the bottom surface of the lifting channel 233. The second cannula 542 is installed on the lifting channel 233 and is connected to the slot 550. A mounting hole 551 matching the second cannula 542 is provided on the slot 550. One end of the first cannula 541 extends into the negative pressure tank 530, and the bottom end of the first cannula 541 is fixedly connected to the negative pressure tank 530, and the other end is connected to the second cannula 542 through the slot 550. One end of the second cannula 542 is connected to the suction chamber 271, and the other end extends into the mounting hole 551, so that the second cannula 542 is slidably connected to the fireproof box 200 through the slot 550.

[0035] Backfire will be absorbed by the negative pressure in the compression cylinder, and dry powder will be filled inside the compression cylinder, thus achieving internal fire extinguishing, avoiding further safety accidents, ensuring the gas safety of residents, and avoiding personal and property losses.

[0036] A self-closing valve 600 is disposed outside the fireproof box 200 . The fireproof box 200 and the self-closing valve 600 are disposed at two ends of the connecting pipe 100 , respectively. The connecting pipe 100 is communicated with the self-closing valve 600 .

[0037] The self-closing valve 600 is detachably connected to the fireproof box 200, and a clamping block 280 is fixedly connected to one side of the fireproof box 200. A clamping groove 610 cooperating with the clamping block 280 is provided on one side of the self-closing valve 600. When using the pipeline gas self-closing valve, open the main gas valve, gently pull up the yellow lifting knob to the outermost layer, and use the gas normally. The self-closing valve will automatically detect the gas pressure. If the gas pressure is abnormal, the self-closing valve will automatically cut off the gas. There is no need to manually close it after use.

[0038] In the description of this specification, the description with reference to the terms "example", "embodiment" or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Of course, the invention of the utility model is not limited to the above-mentioned implementation modes. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A gas fire protection structure, characterized in that: It includes a connecting pipe and a fireproof box, the connecting pipe is connected to the inside of the fireproof box, the fireproof box is connected to the gas pipeline, a heat-conducting component and a heat-expanding component are arranged in the fireproof box, one end of the heat-conducting component is connected to the inner wall of the fireproof box, and the other end is connected to the heat-expanding component, the heat-expanding component is connected to a moving component, and a sealing component is connected to the moving component. Under normal temperature, the fireproof box is connected to the connecting pipe, and under overheating, the heat-expanding component drives the moving component to move, so that the sealing component blocks the connecting pipe.

2. The gas fire protection structure according to claim 1, characterized in that: A fixed component is provided inside the fireproof box, and the fixed component is connected to the inner wall of the fireproof box. A detection cavity is provided inside the fixed component. The moving assembly includes a lifting block and a first moving block that can move along the height direction. A lifting channel that cooperates with the first moving block is provided in the fireproof box. The first moving block is arranged on the top of the heat-expandable component, and the lifting block can be lifted and lowered with the first moving block.

3. The gas fire protection structure according to claim 2, characterized in that: A dovetail groove is provided on the inner wall of the detection cavity, the first moving block is a dovetail block slidably connected to the dovetail groove, a first compression spring is provided below the lifting block, and a blocking component for preventing the lifting block from rising is provided on the first moving block.

4. The gas fire protection structure according to claim 3, characterized in that: A sealing cover is provided at the bottom of the fireproof box, a guide rod is fixedly connected to the inner bottom surface of the sealing cover, a U-shaped rod is provided in the sealing cover, a guide cylinder cooperating with the U-shaped rod is provided in the detection chamber, the guide cylinder is fixedly connected to the fixed component, one end of the U-shaped rod extends into the lifting channel and is connected to the lifting block, and the other end passes through the guide cylinder and is connected to the blocking component, the first compression spring is provided between the bottom end of the U-shaped rod and the inner bottom surface of the sealing cover, and the first compression spring is sleeved on the guide rod.

5. The gas fire protection structure according to claim 3, characterized in that: Two sealing blocks are provided on the inner wall of the fireproof box, and the connecting pipe is clamped between the two sealing blocks. The sealing assembly includes a first connecting component, a blocking block for sealing the connecting pipe and a second moving block slidably connected to the fixed component. One end of the first connecting component is connected to the lifting block, and the other end is connected to the second moving block. The blocking block and the second moving block are slidably connected in the horizontal direction.

6. The gas fire protection structure according to claim 5, characterized in that: The second moving block is provided with a limiting portion, the blocking block is provided with a first sliding groove matched with the limiting portion, a second compression spring is provided between the blocking block and the limiting portion, and the second compression spring is located in the first sliding groove.

7. The gas fire protection structure according to claim 4, characterized in that: A second connecting component is provided in the lifting channel, one end of the second connecting component is connected to the lifting block, and the other end is fixedly connected to the third moving block. A second sliding groove for lifting the third moving block is provided on the inner side wall of the lifting channel. An air suction cavity is provided in the third moving block, and an air suction hole connected to the air suction cavity is provided on the third moving block. The air suction cavity is connected to the gas pipeline through the air suction hole.

8. The gas fire protection structure according to claim 7, characterized in that: A negative pressure tank is provided in the sealing cover, and dry powder is provided in the negative pressure tank to form negative pressure. The negative pressure tank is connected to the third moving block through a cannula assembly, and the cannula assembly includes a first cannula and a second cannula. A slot is provided on the bottom surface of the lifting channel, and the second cannula is installed on the lifting channel and connected to the slot. A mounting hole matching the second cannula is provided on the slot. One end of the first cannula extends into the negative pressure tank, and the other end is connected to the second cannula through the slot. One end of the second cannula is connected to the suction cavity, and the other end extends into the mounting hole.

9. The gas fire protection structure according to claim 1, characterized in that: A self-closing valve is arranged outside the fireproof box, the fireproof box and the self-closing valve are arranged at two ends of the connecting pipe respectively, and the connecting pipe is communicated with the self-closing valve.

10. The gas fire protection structure according to claim 9, characterized in that: The self-closing valve is detachably connected to the fireproof box, a clamping block is fixedly connected to one side of the fireproof box, and a clamping groove cooperating with the clamping block is provided on one side of the self-closing valve.

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