Safety protection device for connecting town gas pipe

Abstract

The utility model discloses a safety protection device used for connecting town gas pipe, including internal pipe fitting, thread bushing and gas early warning subassembly, internal pipe fitting has central pipe body and the threaded stud that surrounds fixed in central pipe body outer peripheral surface, central pipe body and threaded stud are arranged at interval to form the sealing groove, the gas pipe is inserted in the sealing groove, and the gas early warning subassembly is connected with the threaded bushing. A first sealing piece is arranged between the gas pipe and the groove wall of the sealing groove, the threaded column is inserted into the threaded sleeve and forms threaded connection, the gas early warning assembly is assembled on the threaded sleeve so as to monitor the gas concentration in the sealing groove, and pre-tightening force is formed through threaded connection between the threaded column and the threaded sleeve so as to monitor the gas concentration in the sealing groove. The gas pipe, the first sealing piece and the sealing groove are tightly attached to form reliable sealing so as to prevent gas leakage, meanwhile, the gas concentration in the sealing groove is monitored, gas leakage can be sensed and warned in real time, and then fire disasters are prevented so as to effectively guarantee personal safety.

Description

Technical Field

[0001] The utility model relates to the technical field of gas safety protection, in particular to a safety protection device for connecting urban gas pipes. Background Art

[0002] As more and more urban households begin to use coal gas, natural gas and other fuels, it has indeed made people's lives easier and more convenient.

[0003] At present, gas needs to be connected to the gas stoves of urban households through gas pipes. However, these gases also have certain safety risks when in use and pose potential threats to personal safety. For example, the connection between the gas pipe and the gas stove is prone to loosening due to long-term use, or the pipe is aged and deformed, which in turn causes gas leakage. However, family members are unable to detect gas leaks in the first place, which can easily cause fires and other accidents, posing a serious threat to personal safety. Utility Model Content

[0004] Therefore, in order to solve the above problems, the utility model provides a safety protection device for connecting town gas pipes, which is not only used for sealing and connecting gas pipes, but also takes into account the early warning of gas leakage.

[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0006] A safety protection device for connecting urban gas pipes, comprising an internal pipe fitting, a threaded sleeve and a gas early warning component capable of sensing gas leakage; the internal pipe fitting has a central tube body and a threaded column fixedly connected around the outer circumference of the central tube body, and the central tube body and the threaded column are arranged at a distance to form a sealing groove with an opening; a gas pipe is inserted in the sealing groove, and a first sealing component is arranged between the gas pipe and the groove wall of the sealing groove to form a sealing fit; the threaded column is inserted in the threaded sleeve to form a threaded connection, and the gas early warning component is assembled on the threaded sleeve to monitor the gas concentration in the sealing groove.

[0007] Furthermore, the gas warning assembly includes a gas sensor and a warning unit, and an installation channel that penetrates to the opening of the sealing groove is provided on the outer side of the threaded sleeve, and the gas sensor and the warning unit are both assembled on the threaded sleeve; the signal input end of the warning unit is connected to the signal output end of the gas sensor; and the sensing part of the gas sensor extends into the installation channel.

[0008] Furthermore, the early warning unit is a warning light or a siren.

[0009] Furthermore, the first sealing member is an annular sealing sleeve, which is mounted in the sealing groove; the sealing sleeve has an annular sealing cavity with one end open, and a guiding slope is provided on the inner side of the open end of the annular sealing cavity facing the opening of the sealing groove; the gas pipe passes through the opening of the sealing groove toward the pipe wall of the sealing groove and is inserted into the annular sealing cavity, and a sealing fit is formed between the outer wall of the gas pipe and the inner wall of the annular sealing cavity.

[0010] Furthermore, a second sealing member is provided between the outer circumferential surface of the threaded column and the inner circumferential surface of the threaded sleeve.

[0011] Furthermore, the internal pipe fitting has a base plate fixedly connected to the threaded column, and one end of the threaded sleeve facing the base plate has an abutment portion protruding and extending outward, and the abutment portion corresponds to the base plate to form a supporting arrangement.

[0012] Furthermore, the bottom plate and the outer wall of the threaded sleeve are respectively provided with a first fixing member and a second fixing member, and an elastic rope is provided between the first fixing member and the second fixing member.

[0013] Furthermore, a plurality of open plates arranged at intervals are provided at one end of the threaded sleeve away from the threaded column, and a tightening hoop is provided on the outer peripheral surface of the open plates.

[0014] Furthermore, a cushion block is arranged around the outer peripheral surface of the gas pipe, and the cushion block is connected to the heat insulation layer through an elastic connecting piece.

[0015] Furthermore, the elastic connecting member is a spring.

[0016] The technical solution provided by the utility model has the following beneficial effects:

[0017] A certain pre-tightening force is formed by the threaded connection formed between the threaded column and the threaded sleeve to ensure that the pipe wall of the gas pipe, the first sealing member and the groove wall of the sealing groove are tightly fitted and form a reliable sealing fit to prevent the gas from leaking to the outside through the connection gap between the gas pipe and the internal pipe fitting.

[0018] The gas concentration in the sealing groove is then monitored by the gas early warning component to achieve real-time sensing and early warning of gas leakage, thereby preventing accidents such as fires and effectively ensuring personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure shows a cross-sectional view of a safety protection device for connecting a town gas pipe, which is mounted on a gas pipe in an embodiment;

[0020] Figure 2The figure shows a schematic diagram of the buffer insulation unit being assembled on the gas pipe in the embodiment;

[0021] Figure 3 Shown is a schematic diagram of an inner pipe fitting in an embodiment;

[0022] Figure 4 The figure shows a schematic diagram of a threaded sleeve equipped with a gas warning assembly in an embodiment;

[0023] Figure 5 The figure shows a schematic diagram of the annular sealing cavity of the first sealing member aligned with the gas pipe in the sealing groove in the embodiment;

[0024] Figure 6 The diagram shown is a schematic diagram of a clamp assembled on a threaded sleeve in an embodiment. DETAILED DESCRIPTION

[0025] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0027] Reference Figures 1 to 4 As shown, the present embodiment provides a safety protection device for connecting town gas pipes (hereinafter referred to as the safety protection device), the safety protection device includes an internal pipe fitting 17, a threaded sleeve 6 and a gas early warning component 19 capable of sensing gas leakage, the internal pipe fitting 17 has a central tube body 2 and a threaded column 4 surrounding and fixedly connected to the outer circumference of the central tube body 2, and the central tube body 2 and the threaded column 4 are arranged at a distance to form a sealing groove 21 with an opening, a gas pipe 1 is inserted in the sealing groove 21, a first sealing component 5 is arranged between the gas pipe 1 and the groove wall of the sealing groove 21 to form a sealing fit, the threaded column 4 is inserted in the threaded sleeve 6 to form a threaded connection, and the gas early warning component 19 is assembled on the threaded sleeve 6 to monitor the gas concentration in the sealing groove 21.

[0028] In this embodiment, the gas pipe 1 is used to connect to an external gas source, and the internal pipe fitting 17 is used to connect to commonly used gas appliances (such as gas stoves) in urban households.

[0029] A certain pre-tightening force is formed by the threaded connection formed between the threaded column 4 and the threaded sleeve 6 to ensure that the pipe wall of the gas pipe 1, the first sealing member 5 and the groove wall of the sealing groove 21 are tightly fitted and form a reliable sealing fit to prevent the gas from leaking to the outside through the connecting gap between the gas pipe 1 and the internal pipe fitting 17 (such as the gap between the groove wall of the sealing groove 21 and the first sealing member 5, or the gap between the first sealing member 5 and the pipe wall of the gas pipe 1).

[0030] The gas concentration in the sealing groove 21 is then monitored by the gas early warning component 19 to achieve real-time sensing and early warning of gas leakage, thereby preventing accidents such as fires and effectively protecting personal safety.

[0031] In another preferred embodiment, Figure 4 As shown, the gas warning assembly 19 includes a gas sensor 10 and a warning unit 9. An installation channel that penetrates to an opening of the sealing groove 21 is provided on the outer side of the threaded sleeve 6. The gas sensor 10 and the warning unit 9 are both assembled on the threaded sleeve 6. The signal input end of the warning unit 9 is connected to the signal output end of the gas sensor 10, and the sensing part of the gas sensor 10 extends into the installation channel.

[0032] In specific implementation, the early warning unit 9 is a warning light, which emits warning light (such as a red light) to achieve effective reminders or warnings, so as to implement corresponding remedial measures in advance (such as closing the valve of the gas source, etc.) to prevent accidents.

[0033] If the overall volume of the gas sensor 10 is smaller than the volume of the accommodating space in the installation channel of the threaded sleeve 6, the gas sensor 10 is assembled in the installation channel of the threaded sleeve 6, and the sensing portion of the gas sensor 10 extends to the opening of the sealing groove 21, and the signal input end of the warning light is electrically connected to the signal output end of the gas sensor 10 through an electric wire to achieve electrical connection between the gas sensor 10 and the warning light, and the gas concentration value in the connecting gap between the gas pipe 1 and the internal pipe fitting 17 is sensed by the gas sensor 10 to control the opening (such as turning on a red light) or closing (such as turning on a green light) of the early warning unit 9.

[0034] If the overall volume of the gas sensor 10 is larger than the volume of the accommodating space in the installation channel of the threaded sleeve 6, the gas sensor 10 is assembled on the outside of the threaded sleeve 6, and then the sensing part of the gas sensor 10 (such as the sensing head or sensing wire of the gas sensor 10) is passed through the installation channel of the threaded sleeve 6 and extends to the opening of the sealing groove 21.

[0035] Of course, in other embodiments, the early warning unit 9 may also be an alarm, which emits a warning sound to achieve effective reminders or warnings.

[0036] In another preferred embodiment, the first sealing member 5 is an annular sealing sleeve, which is assembled in the sealing groove 21. The sealing sleeve has an annular sealing cavity 51 with one end open. A guiding slope is provided on the inner side of the opening end of the annular sealing cavity 51 facing the opening of the sealing groove 21. The gas pipe 1 passes through the opening of the sealing groove 21 toward the pipe wall of the sealing groove 21 and is inserted into the annular sealing cavity 51, and a sealing fit is formed between the outer wall of the gas pipe 1 and the inner wall of the annular sealing cavity 51.

[0037] In this specific embodiment, the first sealing member 5 is a sealing sleeve made of silicone material, and the cross-sectional shape of the annular sealing cavity 51 is U-shaped.

[0038] When a certain pre-tightening force is formed between the threaded column 4 and the threaded sleeve 6, the pipe wall of the gas pipe 1 and the first sealing member 5 as well as the first sealing member 5 and the groove wall of the sealing groove 21 are tightly fitted respectively, and a reliable sealing fit is formed to prevent the gas from leaking to the outside through the connecting gap between the gas pipe 1 and the internal pipe fitting 17.

[0039] Furthermore, the guiding slope of the annular sealing cavity 51 of the sealing sleeve enables the pipe wall of the gas pipe 1 to be inserted into the annular sealing cavity 51 of the sealing sleeve along the guiding slope, so as to facilitate the engagement between the gas pipe 1 and the sealing sleeve to ensure the sealing effect.

[0040] Further preferably, a second seal 20 is arranged between the outer circumferential surface of the threaded column 4 and the inner circumferential surface of the threaded sleeve 6. Specifically, the second seal 20 is a sealing ring, and the second seal 20 is provided with an inclined surface on the side facing the threaded sleeve 6 to facilitate the assembly between the threaded sleeve 6 and the internal pipe fitting 17.

[0041] In another preferred embodiment, the internal pipe fitting 17 has a base plate 3 fixedly connected to the threaded column 4, and the threaded sleeve 6 has an abutment portion 61 protruding outward at one end facing the base plate 3, and the abutment portion 61 corresponds to the base plate 3 to form a supporting arrangement.

[0042] In this embodiment, the central tube body 2, the threaded column 4 and the bottom plate 3 are connected to form an internal tube member 17 of an integral connection structure.

[0043] The cross-sectional shape of the abutment portion 61 is set to be narrow at the top and wide at the bottom, and the abutment portion 61 of the threaded sleeve 6 abuts against the upper plane of the base plate 3 to form a symmetrical support, which is beneficial to the posture stability of the threaded sleeve 6, and further beneficial to the uniform mutual force between the internal pipe fitting 17 and the threaded sleeve 6, thereby improving the reliability of the threaded connection between the internal pipe fitting 17 and the threaded sleeve 6.

[0044] More specifically, the outer walls of the bottom plate 3 and the threaded sleeve 6 are respectively provided with a first fixing member 13 and a second fixing member 11 , and an elastic rope 12 is provided between the first fixing member 13 and the second fixing member 11 .

[0045] The first fixing member 13 on the bottom plate 3 is a fixing hook, and the second fixing member 11 on the threaded sleeve 6 is a fixing ring. The first fixing member 13 and the second fixing member 11 correspond to each other one by one and are symmetrically arranged.

[0046] One end of the elastic rope 12 passes through the fixing ring, and the other end is clamped in the fixing hook to achieve elastic connection or elastic limitation between the internal pipe fitting 17 and the threaded sleeve 6, which is convenient for fixing the threaded sleeve 6 to ensure that the internal pipe fitting 17 and the threaded sleeve 6 are not easy to loosen, thereby further preventing gas leakage.

[0047] In another preferred embodiment, a plurality of open plates 7 are provided at intervals at one end of the threaded sleeve 6 away from the threaded column 4, and a tightening hoop 8 is provided on the outer peripheral surface of the open plate 7.

[0048] The end of the threaded sleeve 6 away from the threaded column 4 is the end of the threaded sleeve 6 away from the abutment portion 61 or the top end of the threaded sleeve 6 .

[0049] like Figure 6 As shown, by tightening the bolts matching the clamp 8, the distance between adjacent open plates 7 is reduced, that is, the inner diameter of the opening at the top of the threaded sleeve 6 is reduced, so that the top of the threaded sleeve 6 and the outer wall of the gas pipe 1 form a tighter fit, which is beneficial to prevent gas leakage.

[0050] In another preferred embodiment, a cushion block 14 is disposed around the outer circumference of the gas pipe 1 , and the cushion block 14 is connected to the heat insulation layer 16 via an elastic connector 15 . Specifically, the elastic connector 15 is a spring.

[0051] In this embodiment, the cushion block 14 , the elastic connector 15 and the heat insulating layer 16 are connected to form a buffer heat insulating unit 18 .

[0052] When the safety protection device needs to be installed, first loosen the bolts on the clamp 8 to increase the spacing between the open plates 7. The inner diameter of the top opening of the threaded sleeve 6 is larger than the outer diameter of the gas pipe 1. After that, the threaded sleeve 6 is sleeved on the gas pipe 1. Figure 5 As shown, the central tube body 2 of the inner tube fitting 17 is inserted into the gas pipe 1, and the tube wall of the gas pipe 1 is aligned with the annular sealing cavity 51 equipped with the sealing groove 21 of the first sealing member 5, and then the threaded sleeve 6 is tightened through a threaded connection, and the tube wall of the gas pipe 1 is inserted into the bottom of the annular sealing cavity 51 of the first sealing member 5.

[0053] Then, the bolts on the clamp 8 are tightened to reduce the distance between the open plates 7 and the inner diameter of the top opening of the threaded sleeve 6 until the top of the threaded sleeve 6 and the outer wall of the gas pipe 1 form a tight fit, and then the tightness of the elastic rope 12 is adjusted.

[0054] Finally Figure 2As shown, the buffer insulation unit 18 is assembled on the outer circumference of the gas pipe 1 so that the gasket 14 is fixed tightly around the outer wall of the gas pipe 1, and the outer circumference of the gasket 14 is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to the inner wall of the insulation layer 16.

[0055] When squeezed by external heavy objects, the spring can absorb part of the squeezing energy and convert it into elastic potential energy of the spring, thereby reducing the squeezing of the gas pipe 1. At the same time, the cushion block 14 can also reduce the impact of the outside on the gas pipe 1.

[0056] When the outside temperature becomes higher, the insulation layer 16 can reduce the heat transferred from the outside to the gas pipe 1 to ensure that the actual temperature of the gas pipe 1 is lower than the outside temperature, thereby slowing down the aging rate of the gas pipe 1 and extending the service life of the gas pipe 1, while increasing the reliability of the sealing connection between the gas pipe 1 and the internal pipe fitting 17.

[0057] Of course, in other embodiments, the elastic connecting member 15 may also be a spring sheet.

[0058] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A safety protection device for connecting town gas pipes, characterized in that: It includes an internal pipe fitting, a threaded sleeve, and a gas warning component capable of sensing gas leakage; The inner pipe fitting has a central pipe body and a threaded column surrounding and fixedly connected to the outer circumference of the central pipe body, and the central pipe body and the threaded column are arranged at a distance to form a sealing groove with an opening; A gas pipe is inserted into the sealing groove, and a first sealing member is arranged between the gas pipe and the groove wall of the sealing groove to form a sealing fit; The threaded column is inserted into the threaded sleeve to form a threaded connection, and the gas early warning component is assembled on the threaded sleeve to monitor the gas concentration in the sealing groove.

2. The safety protection device for connecting town gas pipes according to claim 1 is characterized in that: The gas warning assembly includes a gas sensor and a warning unit. An installation channel that penetrates to the opening of the sealing groove is provided on the outer side of the threaded sleeve. The gas sensor and the warning unit are both assembled on the threaded sleeve. The signal input end of the warning unit is connected to the signal output end of the gas sensor. The sensing part of the gas sensor extends into the installation channel.

3. The safety protection device for connecting town gas pipes according to claim 2 is characterized in that: The early warning unit is a warning light or a siren.

4. The safety protection device for connecting town gas pipes according to claim 1, characterized in that: The first sealing member is an annular sealing sleeve, which is mounted in the sealing groove; the sealing sleeve has an annular sealing cavity with an opening at one end, and a guiding slope is arranged on the inner side of the opening end of the annular sealing cavity facing the opening of the sealing groove; the gas pipe passes through the opening of the sealing groove toward the pipe wall of the sealing groove and is inserted into the annular sealing cavity, and a sealing fit is formed between the outer wall of the gas pipe and the inner wall of the annular sealing cavity.

5. The safety protection device for connecting town gas pipes according to any one of claims 1 to 4, characterized in that: A second sealing member is provided between the outer circumferential surface of the threaded column and the inner circumferential surface of the threaded sleeve.

6. The safety protection device for connecting town gas pipes according to any one of claims 1 to 4, characterized in that: The inner pipe fitting has a bottom plate fixedly connected to the threaded column, and one end of the threaded sleeve facing the bottom plate has an abutment portion protruding and extending outward, and the abutment portion corresponds to the bottom plate to form a supporting arrangement.

7. The safety protection device for connecting town gas pipes according to claim 6, characterized in that: The bottom plate and the outer wall of the threaded sleeve are respectively provided with a first fixing member and a second fixing member, and an elastic rope is provided between the first fixing member and the second fixing member.

8. The safety protection device for connecting town gas pipes according to any one of claims 1 to 4, characterized in that: A plurality of open plates arranged at intervals are arranged at one end of the threaded sleeve away from the threaded column, and a tightening hoop is arranged on the outer peripheral surface of the open plates.

9. The safety protection device for connecting town gas pipes according to any one of claims 1 to 4, characterized in that: A cushion block is arranged around the outer peripheral surface of the gas pipe, and the cushion block is connected to the heat insulation layer through an elastic connecting piece.

10. The safety protection device for connecting town gas pipes according to claim 9, characterized in that: The elastic connecting member is a spring.

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