Gas outlet pipe protection mechanism

Abstract

The utility model relates to a gas delivery safety device technical field, concretely relates to a gas ground pipe protection mechanism, including ground pipe subassembly, ground pipe subassembly includes two ground pipes connected through flange, still include the anti -collision frame, its straddling ground pipe subassembly's both sides, still include sealed protection frame, its fixed mounting in the one side of anti -collision frame to ground pipe subassembly, the top and bottom of sealed protection frame all are provided with the seal plate of slidable, the utility model discloses a "sealed protection frame + seal plate" constitute first -class protection, effectively blocks most external dust and splashes water, through the "closed monitoring gas chamber" that two semicircular protection cover close form constitutes second -class protection, will monitor environment and external severe weather (rain, snow, sand) complete isolation, fundamentally solved the problem that the alarm is vulnerable to damp, pollution failure because of the existence of the breathable hole in the background art, ensure the accuracy and reliability of monitoring result.

Description

Technical Field

[0001] This utility model relates to the technical field of gas transmission and distribution safety facilities, specifically to a gas outlet pipe protection mechanism. Background Technology

[0002] As a critical node connecting underground pipelines to above-ground user facilities, the gas outlet pipe's connection points (usually flanges or threaded connections) are prone to leaks due to stress concentration, vibration, corrosion, and other factors. Existing technologies have proposed various protection solutions to address this.

[0003] Chinese patent document CN215721708U discloses a gas outlet pipe protection device, which prevents pipe corrosion and damage by setting an outlet protection pipe and a protective sleeve, but it is insufficient in monitoring and protecting against leaks at pipe connections.

[0004] To further address this issue, Chinese patent document CN222669693U (authorization announcement date: March 25, 2025) discloses a gas outlet pipe protection mechanism. This mechanism includes a monitoring device fitted onto the pipe connection. The monitoring device has an annular casing with several vent holes, and a gas alarm is installed inside the casing. When a leak occurs at the connection, gas enters the annular casing through the vent holes and is detected by the alarm. While this design achieves leak detection, it still has significant shortcomings in practical use: First, the vent holes on its annular casing are directly connected to the external environment. In severe weather conditions such as rain, snow, and sandstorms, rainwater, moisture, and foreign objects can easily enter the casing through the vent holes, which can easily lead to short circuits in the internal gas alarm circuit, sensor contamination or corrosion failure, and a significant reduction in reliability. Secondly, the monitoring mechanism is an integrated structure that is fitted onto the pipeline. During installation and maintenance, it needs to be fitted from the end of the pipeline, which is extremely inconvenient for already laid pipelines. Furthermore, when maintaining or replacing the internal alarm, the entire mechanism needs to be disassembled, making the operation cumbersome and affecting maintenance efficiency.

[0005] Therefore, there is an urgent need for a gas outlet pipe protection mechanism that can effectively monitor leaks, has good environmental adaptability, and is easy to install and maintain. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of existing monitoring mechanisms, such as poor environmental adaptability and inconvenience in installation and maintenance, and to provide a gas outlet pipe protection mechanism with reasonable structure, good sealing performance, and easy disassembly and maintenance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A gas outlet pipe protection mechanism includes an outlet pipe assembly, the outlet pipe assembly including two outlet pipes connected by flanges, and further includes: A crash protection frame is installed across both sides of the grounding pipe assembly; A sealed protective frame is fixedly installed on the side of the anti-collision frame facing the grounding pipe assembly. The top and bottom of the sealed protective frame are provided with slidable sealing plates. A circular hole is formed between the sealing plate and the sealed protective frame for the grounding pipe to pass through. The sealed protective frame and the sealing plate together constitute the first level of protection. An openable protective cover assembly is disposed in the inner cavity of the sealed protective frame. The openable protective cover assembly includes two horizontally movable semi-circular protective covers. The inner cavities of the two semi-circular protective covers together form a sealed monitoring air chamber isolated from the external environment. When the two semi-circular protective covers move towards each other to close, they wrap around the outer periphery of the flange connection of the two ground outlet pipes to form a second level of protection. A gas alarm, which is mounted on the anti-collision frame; and, A monitoring tube, which connects the monitoring port of the gas alarm to the sealed monitoring gas chamber.

[0008] As a further improvement of this utility model, the anti-collision frame includes two U-shaped anti-collision bars arranged opposite each other, and a fixing plate is fixedly connected between the two U-shaped anti-collision bars. The gas alarm is embedded and installed on the front of the fixing plate.

[0009] As a further improvement of this utility model, both ends of the two U-shaped anti-collision bars are vertically fixed with mounting feet for fitting the fixing surface, and mounting feet are provided with mounting holes.

[0010] As a further improvement of this utility model, the top and bottom of the sealing and protective frame are provided with openings communicating with the inner cavity, and the sidewalls of the openings are provided with grooves extending in the vertical direction; the sealing plate is slidably inserted into the openings, and its sidewalls are fixed with protrusions that are adapted to the grooves.

[0011] As a further improvement of this utility model, the openable protective cover assembly also includes a stop block fixed to the outer arc surface of the two semi-circular protective covers. A connecting rod is vertically fixed on the opposite side of the two stop blocks. The connecting rod passes through the side wall of the sealed protective frame and extends outward, and its end is fixed with a handle for driving the semi-circular protective cover to move.

[0012] As a further improvement of this utility model, the mating end faces of the two semi-circular protective covers are respectively provided with magnetic components that attract each other. The magnetic components are magnetic sheets and iron sheets respectively embedded in the end faces of the two semi-circular protective covers.

[0013] As a further improvement of this utility model, the monitoring tube is a flexible hose, and its two ends are connected to the monitoring port of the gas alarm and the connection port of the semi-circular protective cover respectively through quick-connect fittings.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This utility model uses a "sealed protective frame + sealing plate" to form the first level of protection, effectively blocking most of the external dust and splashes of water; the "sealed monitoring air chamber" formed by the closure of two semi-circular protective covers forms the second level of protection, completely isolating the monitoring environment from external severe weather (rain, snow, sandstorms), fundamentally solving the problem in the background technology of CN222669693U patent that the alarm is prone to moisture and pollution failure due to the presence of air vents, thus ensuring the accuracy and reliability of the monitoring results; The core monitoring unit (openable protective cover assembly) of this utility model adopts a split design and external drive. During installation, it does not need to be inserted from the end of the pipe. The two semi-circular protective covers can be closed from both sides of the pipe. It is particularly suitable for the renovation of existing pipes. During maintenance, the protective cover can be easily opened through the external handle to inspect the internal connection or the protective cover itself. The operation is simple and greatly improves the maintenance efficiency. Attached Figure Description

[0015] 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 these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a schematic diagram of the overall rear structure of this utility model; Figure 3 This is a schematic diagram of the sealing and protective frame structure of this utility model; Figure 4 A schematic diagram of the structure of the openable protective cover assembly of this utility model covering the grounding pipe assembly; Figure 5 This is a schematic diagram of the structure of the openable protective cover assembly of this utility model that does not cover the grounding pipe assembly.

[0017] The labels in the diagram represent: 1. U-shaped anti-collision bar; 11. Mounting foot; 12. Fixing plate; 13. Gas alarm; 14. Monitoring tube; 2. Sealed protective frame; 21. Opening; 22. Groove; 23. Sealing plate; 24. Raised strip; 3. Grounding pipe; 41. Semi-circular protective cover; 42. Stop block; 43. Connecting rod; 44. Handle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The present invention will be further described below with reference to the embodiments.

[0020] Example like Figure 1-5 As shown, the present invention provides a gas outlet pipe protection mechanism, including an outlet pipe assembly, an anti-collision frame, a sealed protective frame 2, an openable protective cover assembly, and a gas alarm 13.

[0021] The grounding pipe assembly includes two grounding pipes 3 connected by flanges. This is a conventional structure and also the core part that needs protection.

[0022] The anti-collision frame spans both sides of the grounding pipe assembly, serving as the outermost layer of protection. For example... Figure 1 and Figure 2 As shown, the anti-collision frame includes two U-shaped anti-collision bars 1, which are connected and fixed together by a fixing plate 12. The gas alarm 13 is embedded and installed on the front of the fixing plate 12. The two ends of the U-shaped anti-collision bars 1 are vertically fixed with mounting feet 11, and the mounting feet 11 have mounting holes. The entire mechanism can be firmly installed on the wall or the ground by fasteners such as expansion bolts.

[0023] The sealed protective frame 2 is fixed to the back of the fixing plate 12 by welding or bolting. For example... Figure 3As shown, the sealing and protective frame 2 has openings 21 at both the top and bottom, and the sidewalls of the openings 21 are machined with vertical grooves 22. The sealing plate 23 can be inserted into the openings 21 from top to bottom, and the protrusions 24 on its sidewalls slide in conjunction with the grooves 22 to achieve the installation and positioning of the sealing plate 23. A semi-circular hole is provided on the part of the sealing plate 23 that contacts the grounding pipe 3. When the upper and lower sealing plates 23 are inserted, they, together with the sealing and protective frame 2, form two complete circular holes for the grounding pipe 3 to pass through. The gap between the sealing plate 23 and the grounding pipe 3 can be filled with flexible sealant, thus forming, together with the sealing and protective frame 2, the first level of protection against the external environment.

[0024] The openable protective cover assembly is the core of this utility model and is located inside the sealed protective frame 2. For example... Figure 4 and Figure 5 As shown, the component includes two semi-circular protective covers 41. A stop block 42 is fixed at the center of the outer arc surface of each semi-circular protective cover 41. A connecting rod 43 is vertically fixed to the stop block 42. The connecting rod 43 extends outward through a through hole in the side wall of the sealed protective frame 2, and a handle 44 is fixed at its end. By pulling outward or pushing inward on the two handles 44, the two semi-circular protective covers 41 can be driven to move in opposite directions or towards each other in the horizontal direction. When the two semi-circular protective covers 41 move towards each other and close, their ends are magnetically attracted to each other through embedded magnetic and iron plates, forming a complete circular protective cover that tightly wraps around the flange connection of the two grounding pipes 3. Its inner cavity forms a sealed monitoring chamber isolated from the outside, constituting the second level of protection.

[0025] To ensure the sealing of the closed monitoring chamber, sealing rings (not shown in the figure) are fixedly embedded on the inner arc edges of the two semi-circular protective covers 41. When the two semi-circular protective covers 41 are closed, the sealing rings are tightly fitted to the outer wall of the grounding pipe 3. At the same time, a sealing ring or sealing bearing (not shown in the figure) is also provided at the through hole where the connecting rod 43 passes through the side wall of the sealed protective frame 2 to prevent external gas from entering the closed monitoring chamber from this point.

[0026] The gas alarm 13 is powered by a built-in battery or an external low-voltage power supply. Its monitoring port is connected to two monitoring tubes 14. The monitoring tubes 14 are flexible hoses (such as PU tubes), and their two ends are connected to the port of the gas alarm 13 and the connection port on the semi-circular protective cover 41 (not shown in the figure) respectively through quick-connect fittings (details not shown in the figure). This connection method allows the pipes to move when the protective cover is opened and closed, and facilitates quick disassembly.

[0027] The work process is as follows: During installation, the operator first securely fixes the entire crash barrier frame to the ground or wall using expansion bolts through the mounting holes on the mounting feet 11. Then, the sealing plates 23 at the top and bottom of the sealed protective frame 2 are pulled upwards from the opening 21, completely opening the inner cavity of the sealed protective frame 2. Next, the entire crash barrier frame with the fixed sealing protective frame 2 is fitted over the two grounding pipes 3 that are already connected by flanges, ensuring that the flange connection is approximately centered within the inner cavity of the sealed protective frame 2. Then, the sealing plates 23 are reinserted along the opening 21, allowing the protrusions 24 on their side walls to slide into the grooves 22 for guidance and positioning. The semi-circular holes on the sealing plates 23 fit snugly against the outer wall of the grounding pipes 3, forming complete circular holes. This process constitutes the establishment of the first level of protection.

[0028] After the frame and seal installation are completed, the operator simultaneously pushes both handles 44 inward. The handles 44 move the connecting rod 43 inward, which in turn pushes the stop block 42 and its fixed semi-circular protective cover 41 to move towards each other in the horizontal direction. The two semi-circular protective covers 41 eventually close, their ends attracting each other through pre-embedded magnetic and iron plates, forming a complete circular protective cover tightly enclosing the flange connection of the grounding pipe 3. The inner cavities of the two semi-circular protective covers 41 together constitute a sealed monitoring chamber physically isolated from the external environment; this process constitutes the establishment of the second level of protection. Finally, ensure that the monitoring pipe 14 is reliably connected between the monitoring port of the gas alarm 13 and the connection port of the semi-circular protective cover 41 via its quick-connect fittings at both ends.

[0029] In operation, if a gas leak occurs at the flange connection of the grounding pipe 3, the leaked gas will first be confined within a sealed monitoring chamber formed by two semi-circular protective covers 41. Because this chamber is sealed, the gas cannot quickly diffuse into the outside atmosphere but accumulates within it. The accumulated gas is then transported through the monitoring pipe 14 to the monitoring port of the gas alarm 13 mounted on the fixed plate 12. Once the sensor inside the gas alarm 13 detects that the gas concentration has reached the alarm level, it immediately triggers an audible and visual alarm, alerting maintenance personnel to handle the situation, thus achieving early warning and risk control.

[0030] When periodic maintenance or component replacement is required, maintenance personnel can first disconnect the quick-connect fitting at one end of the monitoring tube 14. Then, simultaneously pull both handles 44 outwards. The handles 44, via the connecting rod 43 and the stop block 42, cause the two semi-circular protective covers 41 to move in opposite directions. After overcoming the magnetic attraction, the semi-circular protective covers 41 can be opened, fully exposing the flange connection for easy visual inspection, bolt tightening, or gasket replacement. For more thorough maintenance, the sealing plate 23 can be further removed, enabling unobstructed access to the entire protective mechanism. The entire disassembly process does not require moving the external anti-collision frame or disconnecting the grounding pipe 3 itself, making maintenance convenient and efficient.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gas outlet pipe protection mechanism, comprising an outlet pipe assembly, wherein the outlet pipe assembly comprises two outlet pipes (3) connected by flanges, characterized in that, Also includes: A crash protection frame is installed across both sides of the grounding pipe assembly; A sealing protective frame (2) is fixedly installed on the side of the anti-collision frame facing the grounding pipe assembly. The top and bottom of the sealing protective frame (2) are provided with detachable sealing plates (23). A circular hole is formed between the sealing plate (23) and the sealing protective frame (2) for the grounding pipe (3) to pass through. The sealing protective frame (2) and the sealing plate (23) together constitute the first level of protection. An openable protective cover assembly is provided in the inner cavity of the sealed protective frame (2). The openable protective cover assembly includes two horizontally movable semi-circular protective covers (41). The inner cavities of the two semi-circular protective covers (41) together form a sealed monitoring air chamber isolated from the external environment. When the two semi-circular protective covers (41) move towards each other to close, they wrap around the outer periphery of the flange connection of the two ground outlet pipes (3) to form a second level of protection. A gas alarm (13) is mounted on the anti-collision frame; and, The monitoring tube (14) is connected to the monitoring port of the gas alarm (13) and the sealed monitoring chamber.

2. The gas outlet pipe protection mechanism according to claim 1, characterized in that, The anti-collision frame includes two U-shaped anti-collision bars (1) arranged opposite to each other, and a fixing plate (12) is fixedly connected between the two U-shaped anti-collision bars (1). The gas alarm (13) is embedded and installed on the front of the fixing plate (12).

3. A gas outlet pipe protection mechanism according to claim 2, characterized in that, Both ends of the two U-shaped anti-collision bars (1) are vertically fixed with mounting feet (11) for fitting the fixing surface, and mounting holes are provided on the mounting feet (11).

4. A gas outlet pipe protection mechanism according to claim 1, characterized in that, The top and bottom of the sealing and protective frame (2) are provided with openings (21) that communicate with the inner cavity. The side wall of the opening (21) is provided with a groove (22) extending in the first direction. The sealing plate (23) is slidably inserted into the opening (21), and its side wall is fixed with a protrusion (24) that matches the groove (22).

5. A gas outlet pipe protection mechanism according to claim 1, characterized in that, The openable protective cover assembly also includes a stop block (42) fixed to the outer arc surface of the two semi-circular protective covers (41). A connecting rod (43) is vertically fixed on the opposite side of the two stop blocks (42). The connecting rod (43) passes through the side wall of the sealed protective frame (2) and extends outward, and its end is fixed with a handle (44) for driving the semi-circular protective cover (41) to move.

6. A gas pipeline protection mechanism according to claim 1, characterized in that, The two semi-circular protective covers (41) are respectively provided with magnetic components that attract each other. The magnetic components are magnetic sheets and iron sheets that are respectively embedded in the end faces of the two semi-circular protective covers (41).

7. A gas outlet pipe protection mechanism according to claim 1, characterized in that, The monitoring tube (14) is a flexible hose, and its two ends are connected to the monitoring port of the gas alarm (13) and the connection port of the semi-circular protective cover (41) respectively through quick-connect fittings.

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