Fuel gas safety protection device easy to replace and maintain

Abstract

The utility model belongs to the technical field of fuel gas safety, and particularly relates to a fuel gas safety protection device easy to replace and maintain, which comprises a first fuel gas pipe, and a second fuel gas pipe is arranged on the right side of the first fuel gas pipe. The lower protective shell is attached to the lower sides of the outer walls of the first gas pipe and the second gas pipe by one hand, the upper protective shell covers the lower protective shell by the other hand, the insertion rod is inserted into the insertion hole to complete connection, the upper half threaded pipe and the lower half threaded pipe are positioned, and it is guaranteed that formed threads can be matched with thread grooves in the inner side of the thread sleeve; the thread sleeve slides to the upper half threaded pipe and the lower half threaded pipe and then is screwed, so that the protection device is connected to the connecting position of the first gas pipe and the second gas pipe, when gas leaks from the connecting flange, the trigger is started, the two electromagnetic valves are controlled to be closed, and when the protection device needs to be replaced or maintained, only the thread sleeve needs to be screwed, and the protection device can be replaced or maintained. The upper protection shell and the lower protection shell are separated through the breaking block, other tools are not needed, operation is easy, time and labor are saved, and replacement and maintenance of the protection device are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of gas safety, in particular to a gas safety protection device which is easy to replace and maintain. Background Art

[0002] Gas is a general term for gaseous fuels, which can burn and release heat for use by urban residents and industrial enterprises. There are many types of gas, mainly natural gas, artificial gas, liquefied petroleum gas and biogas. When using it, protective devices are usually required to prevent gas leakage;

[0003] China Public Invention: CN202222620571.8 discloses a gas safety protection device with a detection function, including an upper protective cover and a lower protective cover, a detection mechanism is inserted and fixedly connected in the middle of the upper end of the upper protective cover, a first gas pipeline and a second gas pipeline are clamped between the left and right parts of the opposite surfaces of the upper and lower protective covers, and the first gas pipeline is located on the left side of the second gas pipeline, the right end of the first gas pipeline and the left end of the second gas pipeline are both inserted and fixedly connected with a connecting flange, and the peripheries of the opposite surfaces of the two connecting flanges are fixedly connected together by bolts, and the upper left part of the first gas pipeline and the upper right part of the second gas pipeline are both provided with solenoid valves. The gas safety protection device with a detection function described in the utility model can protect the connection between the two gas pipelines, and can also detect in real time whether there is a gas leak at the connection, thereby improving safety;

[0004] The protection device is connected by multiple bolts. When installing or opening the protection cover for maintenance, it is necessary to remove them one by one with the help of tools. The operation is troublesome, time-consuming and labor-intensive, and it is not convenient to replace or maintain the protection device. Therefore, a gas safety protection device that is easy to replace and maintain is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a gas safety protection device which is easy to replace and maintain, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas safety protection device that is easy to replace and maintain, comprising a first gas pipe, a second gas pipe is arranged on the right side of the first gas pipe, a connecting flange is fixedly connected to the right end of the first gas pipe and the left end of the second gas pipe, the peripheries of the opposite surfaces of the two connecting flanges are fixedly connected together by bolts, an upper protective shell is arranged on the upper side of the outer side walls of the first gas pipe and the second gas pipe, a lower protective shell is arranged on the lower side of the outer side walls of the first gas pipe and the second gas pipe, a gasket is arranged between the lower surface of the upper protective shell and the upper surface of the lower protective shell, the lower surface of the upper protective shell is fixedly connected to evenly distributed plug rods, and the lower protective shell is fixedly connected to the lower surface of the lower protective shell. The upper surface of the shell is provided with evenly distributed insertion holes, the outer side wall of the insertion rod is inserted into the inner side wall of the insertion hole, the left and right side walls of the upper protective shell are fixedly connected with upper half threaded tubes, the left and right side walls of the lower protective shell are fixedly connected with lower half threaded tubes, the outer side walls of the first gas pipe and the second gas pipe are slidably connected with screw sleeves, the threads formed on the outer sides of the upper half threaded tube and the lower half threaded tube match the internal thread grooves of the screw sleeves, the outer side walls of the first gas pipe and the second gas pipe are threadedly connected with the inner side wall of the screw sleeve, the outer side walls of the first gas pipe and the second gas pipe are installed with solenoid valves, the upper surface of the upper protective shell is connected with a detection cylinder, and a trigger is installed on the inner side of the detection cylinder.

[0007] As a further preferred embodiment of the technical solution: an alarm is installed on the upper surface of the trigger, and the outer side wall of the alarm is fixedly connected to the inner side wall of the detection cylinder.

[0008] As a further preferred embodiment of the present technical solution: the inner wall of the detection cylinder is fixedly connected with a fixing plate, the inner wall of the fixing plate is slidably connected with a sliding rod, the upper end of the sliding rod is fixedly connected with a trigger plate, the inner wall of the detection cylinder is slidably connected with a limiting plate, and the upper surface of the limiting plate is fixedly connected to the lower surface of the sliding rod.

[0009] As a further preferred embodiment of the technical solution: a spring is fixedly connected between the upper surface of the limiting plate and the lower surface of the fixing plate.

[0010] As a further preferred embodiment of the present technical solution: a sealing ring is provided on the inner side wall of the screw sleeve, and an anti-slip pattern is provided on the outer side wall of the screw sleeve.

[0011] As a further preferred embodiment of the present technical solution: an outer side wall of the upper protective shell and an outer side wall of the lower protective shell are each provided with a pair of break blocks.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] When the utility model is used, the two screw sleeves are respectively inserted into the outer walls of the first gas pipe and the second gas pipe, and the first gas pipe and the second gas pipe are connected through the connecting flange. One hand holds the lower protective shell against the lower side of the outer wall of the first gas pipe and the second gas pipe, and the other hand covers the upper protective shell on the lower protective shell, and the insertion rod is inserted into the insertion hole to complete the connection, and the upper half threaded pipe and the lower half threaded pipe are positioned to ensure that the formed thread can adapt to the inner thread groove of the screw sleeve, and the screw sleeve is slid to the upper half threaded pipe and the lower half threaded pipe and then twisted, so that the protection device is connected to the connection of the first gas pipe and the second gas pipe. When there is a gas leak at the connecting flange, the trigger is started to control the two solenoid valves to be closed. When the protection device needs to be replaced or maintained, it only needs to twist the screw sleeve and separate the upper protective shell and the lower protective shell by breaking the pieces. No other tools are needed, the operation is simple, time-saving and labor-saving, and it is convenient to replace and maintain the protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front structural schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the connecting flange and the solenoid valve in the utility model;

[0017] Figure 4 It is a structural schematic diagram of the upper half threaded pipe, the lower half threaded pipe and the threaded sleeve in the utility model;

[0018] Figure 5 For the utility model Figure 2 A magnified view of the structure of area A.

[0019] In the figure: 1. first gas pipe; 2. second gas pipe; 3. connecting flange; 4. upper protective shell; 5. lower protective shell; 6. gasket; 7. plug rod; 8. plug hole; 9. upper half threaded pipe; 10. lower half threaded pipe; 11. screw sleeve; 12. solenoid valve; 13. detection tube; 14. trigger; 15. alarm; 16. fixing plate; 17. sliding rod; 18. trigger plate; 19. limit plate; 20. spring; 21. sealing ring; 22. anti-slip pattern; 23. breaking block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limitations on the present application. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] See also Figure 1-5The utility model provides a technical solution: a gas safety protection device that is easy to replace and maintain, comprising a first gas pipe 1, a second gas pipe 2 is arranged on the right side of the first gas pipe 1, a connecting flange 3 is fixedly connected to the right end of the first gas pipe 1 and the left end of the second gas pipe 2, the peripheries of the opposite surfaces of the two connecting flanges 3 are fixedly connected together by bolts, an upper protective shell 4 is arranged on the upper side of the outer side wall of the first gas pipe 1 and the second gas pipe 2, a lower protective shell 5 is arranged on the lower side of the outer side wall of the first gas pipe 1 and the second gas pipe 2, and a gasket 6 is arranged between the lower surface of the upper protective shell 4 and the upper surface of the lower protective shell 5 The lower surface of the upper protective shell 4 is fixedly connected with evenly distributed plug rods 7, and the upper surface of the lower protective shell 5 is provided with evenly distributed plug holes 8. The outer wall of the plug rod 7 is inserted into the inner wall of the plug hole 8. The left and right side walls of the upper protective shell 4 are fixedly connected with upper half threaded tubes 9, and the left and right side walls of the lower protective shell 5 are fixedly connected with lower half threaded tubes 10. The outer walls of the first gas pipe 1 and the second gas pipe 2 are slidably connected with screw sleeves 11. The threads formed on the outer sides of the upper half threaded tube 9 and the lower half threaded tube 10 match the internal thread grooves of the screw sleeves 11. The outer walls of the first gas pipe 1 and the second gas pipe 2 are connected with the inner sides of the screw sleeves 11. The outer walls of the first gas pipe 1 and the second gas pipe 2 are both threadedly connected, and a solenoid valve 12 is installed on each of the outer walls. The upper surface of the upper protective shell 4 is connected to a detection cylinder 13, and a trigger 14 is installed on the inner side of the detection cylinder 13. When in use, the two screw sleeves 11 are respectively inserted into the outer walls of the first gas pipe 1 and the second gas pipe 2, and the first gas pipe 1 and the second gas pipe 2 are connected through the connecting flange 3. One hand holds the lower protective shell 5 against the lower side of the outer wall of the first gas pipe 1 and the second gas pipe 2, and the other hand covers the upper protective shell 4 on the lower protective shell 5, aligns the insertion rod 7 and inserts it into the socket 8 to complete the connection, and aligns the upper half thread. The tube 9 and the lower half threaded tube 10 are positioned to ensure that the formed thread can adapt to the inner thread groove of the screw sleeve 11, and the screw sleeve 11 is slid to the upper half threaded tube 9 and the lower half threaded tube 10 and then twisted to connect the protection device to the connection between the first gas pipe 1 and the second gas pipe 2. When there is a gas leak at the connecting flange 3, the trigger 14 is started to control the two solenoid valves 12 to close. When the protection device needs to be replaced or maintained, it is only necessary to twist the screw sleeve 11 and separate the upper protective shell 4 and the lower protective shell 5 without the aid of other tools. The operation is simple, time-saving and labor-saving, and it is convenient for replacing and maintaining the protection device.

[0023] In this embodiment, specifically: an alarm 15 is installed on the upper surface of the trigger 14, and the outer wall of the alarm 15 is fixedly connected to the inner wall of the detection tube 13; the signal output end of the alarm 15 and the solenoid valve 12 are electrically connected to the signal input end of the trigger 14 through a wire; when the trigger 14 detects a gas leak, the alarm 15 is controlled to sound an alarm, so that the staff can discover it in time.

[0024] In this embodiment, specifically: the inner wall of the detection tube 13 is fixedly connected with a fixing plate 16, the inner wall of the fixing plate 16 is slidably connected with a sliding rod 17, the upper end of the sliding rod 17 is fixedly connected with a trigger plate 18, the inner wall of the detection tube 13 is slidably connected with a limiting plate 19, and the upper surface of the limiting plate 19 is fixedly connected to the lower surface of the sliding rod 17; when there is a gas leak at the connecting flange 3, due to the good sealing performance of the upper protective shell 4 and the lower protective shell 5, the gas enters the detection tube 13, the gas pushes the limiting plate 19, and the limiting plate 19 drives the sliding rod 17, so that the trigger plate 18 contacts the trigger 14.

[0025] In this embodiment, specifically: a spring 20 is fixedly connected between the upper surface of the limiting plate 19 and the lower surface of the fixing plate 16 ; the spring 20 can prevent the protection device from triggering the plate 18 to directly contact the trigger 14 due to factors such as collision or gravity.

[0026] In this embodiment, specifically: the inner wall of the screw sleeve 11 is provided with a sealing ring 21, and the outer wall of the screw sleeve 11 is provided with an anti-slip pattern 22; the sealing ring 21 further increases the sealing performance of the connection between the screw sleeve 11 and the upper half threaded tube 9 and the lower half threaded tube 10, and the anti-slip pattern 22 is convenient for people to twist.

[0027] In this embodiment, specifically: the outer side wall of the upper protective shell 4 and the outer side wall of the lower protective shell 5 are each provided with a pair of breaking blocks 23; the breaking blocks 23 facilitate personnel to separate the upper protective shell 4 from the lower protective shell 5.

[0028] The working principle of the utility model is as follows: when in use, the two screw sleeves 11 are respectively inserted into the outer walls of the first gas pipe 1 and the second gas pipe 2, and the first gas pipe 1 and the second gas pipe 2 are connected through the connecting flange 3. One hand holds the lower protective shell 5 against the lower side of the outer wall of the first gas pipe 1 and the second gas pipe 2, and the other hand covers the upper protective shell 4 on the lower protective shell 5, aligns the insertion rod 7 and inserts it into the insertion hole 8 to complete the connection, and positions the upper half threaded pipe 9 and the lower half threaded pipe 10 to ensure that the formed thread can adapt to the screw sleeve 11. The inner threaded groove slides the screw sleeve 11 to the upper half threaded tube 9 and the lower half threaded tube 10 and then twists it, so that the protection device is connected to the connection between the first gas pipe 1 and the second gas pipe 2. When there is a gas leak at the connecting flange 3, the trigger 14 is started to control the two solenoid valves 12 to close. When the protection device needs to be replaced or maintained, it is only necessary to twist the screw sleeve 11 and separate the upper protective shell 4 and the lower protective shell 5 by breaking the blocks 23. No other tools are required, the operation is simple, time-saving and labor-saving, and it is convenient for replacing and maintaining the protection device.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas safety protection device that is easy to replace and maintain, comprising a first gas pipe (1), characterized in that: A second gas pipe (2) is provided on the right side of the first gas pipe (1), the right end of the first gas pipe (1) and the left end of the second gas pipe (2) are both fixedly connected with a connecting flange (3), the peripheries of the opposite surfaces of the two connecting flanges (3) are fixedly connected together by bolts, an upper protective shell (4) is provided on the upper side of the outer wall of the first gas pipe (1) and the second gas pipe (2), a lower protective shell (5) is provided on the lower side of the outer wall of the first gas pipe (1) and the second gas pipe (2), a gasket (6) is provided between the lower surface of the upper protective shell (4) and the upper surface of the lower protective shell (5), the lower surface of the upper protective shell (4) is fixedly connected with evenly distributed plug rods (7), the upper surface of the lower protective shell (5) is provided with evenly distributed plug holes (8), the outer wall of the plug rod (7) is inserted into the plug hole (9), and the plug hole (10) is inserted into the plug hole (11). The inner side wall of the hole (8), the left and right side walls of the upper protective shell (4) are fixedly connected with an upper half threaded tube (9), the left and right side walls of the lower protective shell (5) are fixedly connected with a lower half threaded tube (10), the outer side walls of the first gas pipe (1) and the second gas pipe (2) are slidably connected with a screw sleeve (11), the threads formed on the outer sides of the upper half threaded tube (9) and the lower half threaded tube (10) match the internal thread groove of the screw sleeve (11), the outer side walls of the first gas pipe (1) and the second gas pipe (2) are threadedly connected with the inner side wall of the screw sleeve (11), the outer side walls of the first gas pipe (1) and the second gas pipe (2) are both installed with a solenoid valve (12), the upper surface of the upper protective shell (4) is connected with a detection cylinder (13), and a trigger (14) is installed on the inner side of the detection cylinder (13).

2. A gas safety protection device that is easy to replace and maintain according to claim 1, characterized in that: An alarm (15) is installed on the upper surface of the trigger (14), and the outer wall of the alarm (15) is fixedly connected to the inner wall of the detection cylinder (13).

3. A gas safety protection device that is easy to replace and maintain according to claim 1, characterized in that: The inner side wall of the detection cylinder (13) is fixedly connected to a fixing plate (16), the inner side wall of the fixing plate (16) is slidably connected to a sliding rod (17), the upper end of the sliding rod (17) is fixedly connected to a trigger plate (18), the inner side wall of the detection cylinder (13) is slidably connected to a limiting plate (19), the upper surface of the limiting plate (19) is fixedly connected to the lower surface of the sliding rod (17).

4. A gas safety protection device that is easy to replace and maintain according to claim 3, characterized in that: A spring (20) is fixedly connected between the upper surface of the limiting plate (19) and the lower surface of the fixing plate (16).

5. A gas safety protection device that is easy to replace and maintain according to claim 1, characterized in that: The inner side wall of the screw sleeve (11) is provided with a sealing ring (21), and the outer side wall of the screw sleeve (11) is provided with anti-slip grooves (22).

6. A gas safety protection device that is easy to replace and maintain according to claim 1, characterized in that: The outer side wall of the upper protective shell (4) and the outer side wall of the lower protective shell (5) are both provided with a pair of break blocks (23).

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