Natural gas pipeline leakage early warning device

Abstract

The invention relates to the technical field of pipeline leakage early warning devices, and discloses a natural gas pipeline leakage early warning device which comprises a top cover and a bottom cover slidably arranged at the bottom of the top cover, a first pipeline is slidably arranged in the top cover, and one end of the first pipeline is fixedly connected with a second pipeline through a bolt; the mounting assembly is arranged in the top cover and comprises a positioning ring fixedly connected to the outer wall of the first pipeline, an arc-shaped block is fixedly connected to one side of the positioning ring, a rectangular block is fixedly connected to the inner wall of the top of the arc-shaped block, and a U-shaped block is fixedly connected to the side wall of the rectangular block; u-shaped blocks are fixedly connected to the top cover and the bottom cover, fixing columns are fixedly connected to the inner walls of the U-shaped blocks, clamping hooks are slidably connected to the outer walls of the fixing columns, and first springs are fixedly connected to the other ends of the clamping hooks. Therefore, the natural gas leakage condition can be monitored in real time.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline leakage early warning devices, and in particular to a natural gas pipeline leakage early warning device. Background Art

[0002] Natural gas refers to all gases that exist naturally in nature, including gases formed by various natural processes in the atmosphere, hydrosphere and lithosphere. The definition of "natural gas" that people have long used is a narrow definition from the perspective of energy, which refers to a mixture of hydrocarbons and non-hydrocarbon gases naturally stored in the strata. In petroleum geology, it usually refers to oilfield gas and gasfield gas. Its composition is mainly hydrocarbons and contains non-hydrocarbon gases.

[0003] According to a natural gas pipeline leakage early warning device proposed in Chinese patent CN116293478A, the gas guide mechanism in the device includes a conduit, a valve and a pressure gauge. One end of the conduit passes through the control box and is fixed to the gas outlet of the gas cylinder. The outer wall of the outer rubber sealing cloth is provided with an air inlet end. The conduit is fixed to the air inlet end through a hose. The valve is installed on the outer wall of the conduit. The pressure gauge is installed on the conduit and is located between the valve and the outer rubber sealing cloth. When gas leakage occurs, the pressure of the pressure gauge changes. A pressure gauge threshold is set. When the threshold is exceeded, the leakage is serious. At this time, the first alarm sounds an alarm. At the same time, the wireless communication device contacts the remote control end, so that the warning is obtained at the first time and the loss is stopped in time.

[0004] In the prior art, natural gas is usually transported by pipeline during transportation. By covering and protecting the interfaces of two connected natural gas pipelines, gas leakage of the natural gas pipelines during long-term use is prevented. There are some shortcomings in the prior art. When gas leaks, it is impossible to predict and warn in time, which easily causes waste of resources and pollution to the environment, and there are certain safety hazards. For this reason, we propose a natural gas pipeline leakage early warning device. Summary of the invention

[0005] The purpose of the present invention is to provide a natural gas pipeline leakage early warning device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a natural gas pipeline leakage warning device, comprising a top cover, a bottom cover slidably arranged at the bottom of the top cover, a first pipeline slidably arranged inside the top cover, one end of the first pipeline is fixedly connected to a second pipeline by bolts, and a mounting assembly arranged inside the top cover, the mounting assembly comprising a positioning ring fixedly connected to the outer wall of the first pipeline, an arc block fixedly connected to one side of the positioning ring, a rectangular block fixedly connected to the top inner wall of the arc block, a U-shaped block fixedly connected to the side wall of the rectangular block, a fixing column fixedly connected to the inner wall of the U-shaped block, a hook slidably connected to the outer wall of the fixing column, and the other end of the hook is fixedly A first spring is fixedly connected, and the other end of the first spring is movably connected to a rectangular cross plate through a hinge. A rectangular groove is provided on the top of the rectangular cross plate. By setting the installation component, before the natural gas leakage detection is required at the connection between the first pipeline and the second pipeline, the top cover and the bottom cover need to be installed first. At this time, the operator puts the top cover and the bottom cover on the connection between the first pipeline and the second pipeline to cause the side walls of the top cover and the bottom cover to contact the side of the positioning ring. Then the operator pulls the hook to extend the first spring and engage the hook with the outer wall of the fixing column. Repeat this step to engage the other seven hooks with the outer walls of the corresponding fixing columns, thereby completing the positioning of the top cover and the bottom cover.

[0007] Preferably, the mounting assembly further comprises an H-shaped sealing block slidably connected to the front of the top cover and the bottom cover, a sealing cross bar is fixedly connected to the side of the H-shaped sealing block, the side wall of the sealing cross bar is slidably connected to the outer wall of the top cover and the bottom cover, the end face of the sealing cross bar is slidably connected to the outer wall of the positioning ring, the top side wall of the H-shaped sealing block is fixedly connected to a side plate, the inner wall of the side plate is threadedly connected to a screw, the top outer wall of the screw is fixedly connected to an adjusting block, the bottom of the screw is rotatably connected to a rectangular limit block, the rectangular limit The outer wall of the block is slidably connected to the inner wall of the rectangular groove. When the installation of the top cover and the bottom cover is completed, the operator fits the H-shaped sealing block at the connection between the top cover and the bottom cover. When the H-shaped sealing block fits the connection between the top cover and the bottom cover, the sealing cross bar will fit the connection between the top cover and the side of the bottom cover. Then the operator turns the adjusting block to cause the screw to rotate. During the rotation of the screw, the rectangular limit block will move downward. When the rectangular limit block is embedded in the rectangular groove, the H-shaped sealing block is installed and fixed.

[0008] Preferably, the installation assembly also includes a limiting cross block fixedly connected to the side wall of the top cover, the inner wall of the limiting cross block is fixedly connected to a second spring, the other end of the second spring is fixedly connected to an extrusion block, the outer wall of the extrusion block is slidably connected to the inner wall of the limiting cross block, the side wall of the extrusion block is fixedly connected to a plug column, the outer wall of the other end of the plug column is slidably connected to the side inner wall of the rectangular block, during the installation of the top cover and the bottom cover, the operator presses the extrusion block inside the limiting cross block, so that the extrusion block compresses the second spring and moves the plug column, and then the operator installs the top cover and the bottom cover on the side wall of the positioning ring and releases the extrusion block. Under the reaction of the second spring, the plug column will be limited, prompting the plug column to be inserted into the interior of the rectangular block, thereby fixing the top cover and the bottom cover.

[0009] Preferably, a detection component is further provided inside the top cover, and the detection component includes a natural gas concentration sensor fixedly connected to the top of the inner wall of the top cover, a controller is fixedly connected to the bottom of the natural gas concentration sensor, and a warning light is fixedly connected to the top of the top cover. By setting the detection component, after the top cover and the bottom cover are installed and fixed, the natural gas concentration sensor will detect the connection between the first pipeline and the second pipeline. When the natural gas concentration sensor detects a natural gas leakage, the controller will work to activate the warning light to prompt the operator that the natural gas is leaking and it is necessary to stop the loss in time.

[0010] Preferably, the end face of the first pipe is fixedly connected to one end of the second pipe by bolts, the connection between the first pipe and the second pipe is located inside the top cover and the bottom cover, and the first pipe and the second pipe are connected by bolts and nuts, which facilitates the sealing connection of the first pipe and the second pipe.

[0011] Preferably, there are eight hooks, which are divided into two groups. The two groups of hooks are symmetrically distributed on both sides of the top cover and the bottom cover along the center plane thereof. By providing a plurality of hooks, it is convenient to fix the top cover and the bottom cover after installation.

[0012] Preferably, the inner wall of the rectangular groove is matched with the outer wall of the rectangular limit block, and the top of the rectangular limit block is rotatably connected to the bottom of the screw rod.

[0013] Preferably, the outer wall of one end of the plug post is matched with the inner wall of the side surface of the rectangular block, and the other end of the plug post is fixedly connected to one side of the extrusion block.

[0014] The present invention provides a natural gas pipeline leakage early warning device. The natural gas pipeline leakage early warning device has the following beneficial effects: (1) The natural gas pipeline leakage warning device is provided with an installation component. Before the natural gas leakage detection is required at the connection between the first pipeline and the second pipeline, the top cover and the bottom cover need to be installed first. At this time, the operator puts the top cover and the bottom cover on the connection between the first pipeline and the second pipeline, so that the side walls of the top cover and the bottom cover are in contact with the side of the positioning ring. Then, the operator pulls the hook to extend the first spring and engage the hook with the outer wall of the fixed column. Repeat this step to engage the other seven hooks with the outer walls of the corresponding fixed columns, thereby completing the positioning of the top cover and the bottom cover. After the installation of the top cover and the bottom cover is completed, the operator fits the H-shaped sealing block to the connection between the top cover and the bottom cover. When the H-shaped sealing block and the top cover are in contact, the operator can lock the top cover and the bottom cover. After the joints of the cover and the bottom cover are fitted, the sealing horizontal strip will fit the joints of the top cover and the sides of the bottom cover, and then the operator turns the adjusting block to cause the screw to rotate. During the rotation of the screw, the rectangular limit block will move downward. When the rectangular limit block is embedded in the rectangular groove, the H-shaped sealing block is installed and fixed. During the installation of the top cover and the bottom cover, the operator presses the extrusion block inside the limit horizontal block to cause the extrusion block to compress the second spring and cause the plug post to move. After that, the operator installs the top cover and the bottom cover on the side wall of the positioning ring and releases the extrusion block. Under the reaction of the second spring, the plug post will be limited, causing the plug post to be inserted into the rectangular block, thereby fixing the top cover and the bottom cover. (2) The natural gas pipeline leakage warning device is provided with a detection component. After the top cover and the bottom cover are installed and fixed, the natural gas concentration sensor will detect the connection between the first pipeline and the second pipeline. When the natural gas concentration sensor detects a natural gas leak, the controller will work to prompt the warning light to remind the operator that the natural gas is leaking and needs to stop the loss in time. Since the top cover and the bottom cover are installed on the outer wall of the interface between the first pipeline and the second pipeline, the natural gas concentration sensor is always in a closed environment during the natural gas leak detection process, making the detection process more accurate. When the contact between the first pipeline and the second pipeline is detected in a closed environment, when a natural gas leak is detected, the controller and the warning light will work in time and generate an alarm through the warning light in time to remind the operator that maintenance is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the installation components in the present invention; Figure 4 for Figure 3 A partial enlarged view of the middle A; Figure 5is a cross-sectional view of the installation assembly in the present invention; Figure 6 for Figure 5 A partial enlarged view of point B in the middle; Figure 7 for Figure 5 A partial enlarged view of point C in the middle; Figure 8 It is a partial structural schematic diagram of the installation assembly in the present invention; Fig. 9 A bottom view of the detection assembly of the present invention; Fig.10 It is a top view of the detection component in the present invention.

[0016] In the figure: 1. top cover; 2. bottom cover; 3. first pipeline; 4. second pipeline; 51. installation assembly; 511. positioning ring; 512. arc block; 513. rectangular block; 514. U-shaped block; 515. fixing column; 516. hook; 517. first spring; 518. rectangular horizontal plate; 519. H-shaped sealing block; 5110. sealing horizontal strip; 5111. side plate; 5112. screw; 5113. adjustment block; 5114. rectangular limit block; 5115. rectangular groove; 5116. limit horizontal block; 5117. second spring; 5118. extrusion block; 5119. plug column; 52. detection assembly; 521. natural gas concentration sensor; 522. controller; 523. warning light. DETAILED DESCRIPTION

[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0018] A preferred embodiment of a natural gas pipeline leakage warning device provided by the present invention is as follows: Figures 1 to 10As shown: A natural gas pipeline leakage warning device comprises a top cover 1, a bottom cover 2 slidably arranged at the bottom of the top cover 1, a first pipeline 3 is slidably arranged inside the top cover 1, one end of the first pipeline 3 is fixedly connected to the second pipeline 4 by bolts, and an installation component 51 arranged inside the top cover 1, the installation component 51 comprises a positioning ring 511 fixedly connected to the outer wall of the first pipeline 3, one side of the positioning ring 511 is fixedly connected to an arc block 512, the top inner wall of the arc block 512 is fixedly connected to a rectangular block 513, the side wall of the rectangular block 513 is fixedly connected to a U-shaped block 514, the inner wall of the U-shaped block 514 is fixedly connected to a fixing column 515, the outer wall of the fixing column 515 is slidably connected to a hook 516, the other end of the hook 516 is fixedly connected to a first spring 517, the first spring 51 The other end of 7 is movably connected to a rectangular horizontal plate 518 through a hinge, and a rectangular groove 5115 is provided on the top of the rectangular horizontal plate 518. By setting the installation component 51, before the natural gas leakage detection is required at the connection between the first pipeline 3 and the second pipeline 4, the top cover 1 and the bottom cover 2 need to be installed first. At this time, the operator puts the top cover 1 and the bottom cover 2 at the connection between the first pipeline 3 and the second pipeline 4 to make the side walls of the top cover 1 and the bottom cover 2 contact with the side of the positioning ring 511. Then the operator pulls the hook 516 to extend the first spring 517 and engage the hook 516 with the outer wall of the fixing column 515. Repeat this step to engage the other seven hooks 516 with the outer walls of the corresponding fixing columns 515, thereby completing the positioning of the top cover 1 and the bottom cover 2.

[0019] The mounting assembly 51 also includes an H-shaped sealing block 519 slidably connected to the front of the top cover 1 and the bottom cover 2, a sealing cross bar 5110 is fixedly connected to the side of the H-shaped sealing block 519, the side wall of the sealing cross bar 5110 is slidably connected to the outer wall of the top cover 1 and the bottom cover 2, the end face of the sealing cross bar 5110 is slidably connected to the outer wall of the positioning ring 511, the top side wall of the H-shaped sealing block 519 is fixedly connected to a side plate 5111, the inner wall of the side plate 5111 is threadedly connected to a screw 5112, the top outer wall of the screw 5112 is fixedly connected to an adjusting block 5113, the bottom of the screw 5112 is rotatably connected to a rectangular limit block 5114, the outer wall of the rectangular limit block 5114 It is slidably connected to the inner wall of the rectangular groove 5115. When the installation of the top cover 1 and the bottom cover 2 is completed, the operator fits the H-shaped sealing block 519 at the connection between the top cover 1 and the bottom cover 2. When the H-shaped sealing block 519 is fitted with the connection between the top cover 1 and the bottom cover 2, the sealing cross bar 5110 will be fitted at the connection between the sides of the top cover 1 and the bottom cover 2. Then the operator rotates the adjusting block 5113 to cause the screw 5112 to rotate. During the rotation of the screw 5112, the rectangular limit block 5114 will move downward. When the rectangular limit block 5114 is embedded in the rectangular groove 5115, the H-shaped sealing block 519 is installed and fixed.

[0020] During the installation of the top cover 1 and the bottom cover 2, the operator presses the extrusion block 5118 inside the limiting horizontal block 5116, causing the extrusion block 5118 to compress the second spring 5117, thereby causing the plug 5119 to move. Then, after the operator installs the top cover 1 and the bottom cover 2 on the side wall of the positioning ring 511, the operator releases the extrusion block 5118, and the plug 5119 is limited by the reaction of the second spring 5117, causing the plug 5119 to be inserted into the interior of the rectangular block 513, thereby fixing the top cover 1 and the bottom cover 2.

[0021] A preferred embodiment of a natural gas pipeline leakage warning device provided by the present invention is as follows: Figures 1 to 10 As shown: a detection component 52 is also provided inside the top cover 1, and the detection component 52 includes a natural gas concentration sensor 521 fixedly connected to the top of the inner wall of the top cover 1, a controller 522 is fixedly connected to the bottom of the natural gas concentration sensor 521, and a warning light 523 is fixedly connected to the top of the top cover 1. By setting the detection component 52, after the top cover 1 and the bottom cover 2 are installed and fixed, the natural gas concentration sensor 521 will detect the connection between the first pipeline 3 and the second pipeline 4. When the natural gas concentration sensor 521 detects a natural gas leak, the controller 522 works to prompt the warning light 523 to remind the operator that the natural gas is leaking and it is necessary to stop the loss in time.

[0022] Furthermore, the end face of the first pipe 3 is fixedly connected to one end of the second pipe 4 by bolts, and the connection between the first pipe 3 and the second pipe 4 is located inside the top cover 1 and the bottom cover 2. The first pipe 3 and the second pipe 4 are connected by bolts and nuts, which facilitates the sealing connection of the first pipe 3 and the second pipe 4.

[0023] Furthermore, there are eight hooks 516, which are divided into two groups. The two groups of hooks 516 are symmetrically distributed on both sides of the center plane of the top cover 1 and the bottom cover 2. By setting a plurality of hooks 516, it is convenient to fix the top cover 1 and the bottom cover 2 after installation.

[0024] Furthermore, the inner wall of the rectangular groove 5115 is matched with the outer wall of the rectangular limit block 5114 , and the top of the rectangular limit block 5114 is rotatably connected to the bottom of the screw rod 5112 .

[0025] In addition, the outer wall of one end of the plug post 5119 is adapted to the inner wall of the side of the rectangular block 513 , and the other end of the plug post 5119 is fixedly connected to one side of the extrusion block 5118 .

[0026] Working principle: before the natural gas leak detection is required at the connection of the first pipeline 3 and the second pipeline 4, the top cover 1 and the bottom cover 2 need to be installed first. At this time, the operator puts the top cover 1 and the bottom cover 2 at the connection of the first pipeline 3 and the second pipeline 4 to make the side walls of the top cover 1 and the bottom cover 2 contact with the side of the positioning ring 511. Then the operator pulls the hook 516 to make the first spring 517 extend and engage the hook 516 on the outer wall of the fixing column 515. Repeat this step to engage the other seven hooks 516 on the outer walls of the corresponding fixing columns 515, thereby completing the positioning of the top cover 1 and the bottom cover 2. During the installation of the top cover 1 and the bottom cover 2, the operator presses the extrusion block 5118 inside the limiting horizontal block 5116 to make the extrusion block 5118 compress the second spring 5117, thereby moving the plug column 5119. Then the operator moves the top cover 1 and the bottom cover 2. After the cover 1 and the bottom cover 2 are installed on the side wall of the positioning ring 511, by releasing the extrusion block 5118, the plug post 5119 will be limited under the reaction of the second spring 5117, prompting the plug post 5119 to be inserted into the interior of the rectangular block 513, so that the top cover 1 and the bottom cover 2 are fixed. After the installation of the top cover 1 and the bottom cover 2 is completed, the operator fits the H-shaped sealing block 519 at the connection between the top cover 1 and the bottom cover 2. When the H-shaped sealing block 519 fits the connection between the top cover 1 and the bottom cover 2, the sealing cross bar 5110 will fit the connection between the side of the top cover 1 and the bottom cover 2. Then the operator rotates the adjustment block 5113 to prompt the screw 5112 to rotate. During the rotation of the screw 5112, the rectangular limiting block 5114 will move downward. When the rectangular limiting block 5114 is embedded in the rectangular groove 5115, the H-shaped sealing block 519 is installed and fixed. After the top cover 1 and the bottom cover 2 are installed and fixed, the natural gas concentration sensor 521 will detect the connection between the first pipeline 3 and the second pipeline 4. When the natural gas concentration sensor 521 detects a natural gas leak, the controller 522 will work to prompt the warning light 523 to remind the operator that the natural gas is leaking and needs to be stopped in time. Since the top cover 1 and the bottom cover 2 are installed on the outer wall of the interface between the first pipeline 3 and the second pipeline 4, the natural gas concentration sensor 521 is always in a closed environment during the natural gas leak detection process, making the detection process more accurate. When the contact between the first pipeline 3 and the second pipeline 4 is detected in a closed environment, when a natural gas leak is detected, the controller 522 and the warning light 523 will work in time and generate an alarm in time through the warning light 523 to remind the operator that maintenance is required.

[0027] The above description is only an illustrative specific implementation mode of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the present invention should fall within the scope of protection of the present invention. It should also be noted that the various components of the present invention are not limited to the above-mentioned overall application. The various technical features described in the specification of the present invention can be selected one by one or multiple ones can be selected and used in combination according to actual needs. Therefore, the present invention should naturally cover other combinations and specific applications related to this case.

Claims

1. A natural gas pipeline leakage warning device, comprising a top cover (1), a bottom cover (2) slidably arranged at the bottom of the top cover (1), a first pipeline (3) slidably arranged inside the top cover (1), one end of the first pipeline (3) being fixedly connected to a second pipeline (4) by bolts, and a mounting assembly (51) arranged inside the top cover (1), characterized in that: The mounting assembly (51) comprises a positioning ring (511) fixedly connected to the outer wall of the first pipe (3); an arc block (512) is fixedly connected to one side of the positioning ring (511); a rectangular block (513) is fixedly connected to the inner wall of the top of the arc block (512); a U-shaped block (514) is fixedly connected to the side wall of the rectangular block (513); a fixing column (515) is fixedly connected to the inner wall of the U-shaped block (514); a hook (516) is slidably connected to the outer wall of the fixing column (515); the other end of the hook (516) is fixedly connected to a first spring (517); the other end of the first spring (517) is movably connected to a rectangular horizontal plate (518) via a hinge; a rectangular groove (5115) is provided on the top of the rectangular horizontal plate (518).

2. A natural gas pipeline leakage early warning device according to claim 1, characterized in that: The mounting assembly (51) further comprises an H-shaped sealing block (519) slidably connected to the front faces of the top cover (1) and the bottom cover (2); a sealing cross bar (5110) is fixedly connected to the side face of the H-shaped sealing block (519); a side wall of the sealing cross bar (5110) is slidably connected to the outer walls of the top cover (1) and the bottom cover (2); an end face of the sealing cross bar (5110) is slidably connected to the outer wall of the positioning ring (511); a side plate (5111) is fixedly connected to the top side wall of the H-shaped sealing block (519); a screw rod (5112) is threadedly connected to the inner wall of the side plate (5111); an adjusting block (5113) is fixedly connected to the top outer wall of the screw rod (5112); a rectangular stop block (5114) is rotatably connected to the bottom of the screw rod (5112); and an outer wall of the rectangular stop block (5114) is slidably connected to the inner wall of the rectangular groove (5115).

3. A natural gas pipeline leakage early warning device according to claim 1, characterized in that: The mounting assembly (51) further comprises a limiting horizontal block (5116) fixedly connected to the side wall of the top cover (1); the inner wall of the limiting horizontal block (5116) is fixedly connected to a second spring (5117); the other end of the second spring (5117) is fixedly connected to an extrusion block (5118); the outer wall of the extrusion block (5118) is slidably connected to the inner wall of the limiting horizontal block (5116); the side wall of the extrusion block (5118) is fixedly connected to a plug post (5119); the outer wall of the other end of the plug post (5119) is slidably connected to the inner wall of the side surface of the rectangular block (513).

4. A natural gas pipeline leakage early warning device according to claim 1, characterized in that: A detection component (52) is also provided inside the top cover (1), and the detection component (52) comprises a natural gas concentration sensor (521) fixedly connected to the top of the inner wall of the top cover (1), a controller (522) is fixedly connected to the bottom of the natural gas concentration sensor (521), and a warning light (523) is fixedly connected to the top of the top cover (1).

5. A natural gas pipeline leakage early warning device according to claim 1, characterized in that: The end surface of the first pipe (3) is fixedly connected to one end of the second pipe (4) by means of bolts, and the connection between the first pipe (3) and the second pipe (4) is located inside the top cover (1) and the bottom cover (2).

6. A natural gas pipeline leakage early warning device according to claim 1, characterized in that: There are eight hooks (516), and the eight hooks (516) are divided into two groups. The two groups of hooks (516) are symmetrically distributed on both sides of the center plane of the top cover (1) and the bottom cover (2).

7. A natural gas pipeline leakage early warning device according to claim 2, characterized in that: The inner wall of the rectangular groove (5115) is matched with the outer wall of the rectangular limit block (5114), and the top of the rectangular limit block (5114) is rotatably connected to the bottom of the screw rod (5112).

8. A natural gas pipeline leakage early warning device according to claim 3, characterized in that: The outer wall of one end of the plug post (5119) is matched with the inner wall of the side surface of the rectangular block (513), and the other end of the plug post (5119) is fixedly connected to one side of the extrusion block (5118).

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