Emergency diffusing device for middle-high pressure natural gas pipeline

Abstract

The utility model discloses an emergency diffusing device for a middle-high pressure natural gas pipeline, and relates to the technical field of diffusing devices. The medium-high pressure natural gas pipeline emergency diffusion device comprises a conveying pipe, flange rings are fixedly arranged at the two ends of the conveying pipe, the medium-high pressure natural gas pipeline emergency diffusion device further comprises a gas guide assembly, the gas guide assembly is embedded in the middle of the surface of the top of the conveying pipe, the bottom end of the gas guide assembly communicates with an inner cavity of the conveying pipe, and the gas guide assembly is used for communicating the conveying pipe with the outside; the plugging assembly is arranged at the top end of the air guide assembly, the telescopic end of the plugging assembly and the middle of an inner cavity of the air guide assembly are plugged, and the plugging assembly is used for plugging the air guide assembly; the natural gas pipeline diffusing device can conduct diffusing treatment on a natural gas pipeline, so that safety accidents caused by the fact that the pressure of natural gas in the pipeline is too high can be prevented, and the maintenance safety of the natural gas pipeline can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of relief devices, in particular to an emergency relief device for a medium- and high-pressure natural gas pipeline. Background Art

[0002] The emergency relief device for medium and high pressure natural gas pipelines is a device used to release overpressure gas in emergency situations in pipeline systems. Its main function is to reduce pipeline pressure through the relief device when an abnormal situation occurs in the pipeline system, such as when the internal pressure of the pipeline exceeds the design range, to ensure the safe operation of the pipeline and related equipment. It prevents pipeline rupture or leakage by discharging overpressure gas in time, thereby ensuring the safe operation of the pipeline system.

[0003] However, when the natural gas pipeline needs maintenance, the natural gas in the pipeline also needs to be released before maintenance can be carried out. Generally, the operator observes the pressure gauge to check the pressure in the pipeline, and then directly releases the natural gas through manual operation. This may cause the natural gas pressure in the pipeline to be too high, and the operator will not have time to observe or fail to accurately observe the pressure on the pressure gauge, causing the natural gas to explode. Therefore, we propose an emergency release device for medium and high pressure natural gas pipelines to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a medium- and high-pressure natural gas pipeline emergency relief device, which solves the problem of low safety of emergency relief of the natural gas pipeline.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: an emergency relief device for a medium- and high-pressure natural gas pipeline, comprising a delivery pipe, both ends of which are fixedly provided with flange rings, and further comprising:

[0006] An air guide component, wherein the air guide component is embedded in the middle of the top surface of the delivery tube, the bottom end of the air guide component is in communication with the inner cavity of the delivery tube, and the air guide component is used to connect the delivery tube with the outside world;

[0007] A blocking component, which is disposed at the top of the air guide component, and the telescopic end of the blocking component blocks the middle of the inner cavity of the air guide component, and the blocking component is used to block the air guide component; and

[0008] A control component is arranged in the middle of the outer wall of the air guide component, and is used to control the operation of the blocking component.

[0009] Preferably, the air guide assembly comprises an air guide tube embedded in the middle of the top surface of the delivery tube, and a support ring is provided at the lower middle part of the inner cavity of the air guide tube;

[0010] A connecting pipe is embedded and connected on the outer wall of the air guide pipe and located below the support ring, and an air pressure sensor is arranged in the inner cavity of the connecting pipe;

[0011] An exhaust portion is embedded and connected to the side wall of the air guide pipe and located above the support ring.

[0012] Preferably, the exhaust portion includes an exhaust pipe embedded in the side wall of the air guide pipe and located above the support ring, and a check valve is connected in series in the middle of the exhaust pipe.

[0013] Preferably, the exhaust part further includes a dustproof mesh plate, which is arranged at the air outlet end of the exhaust pipe, and the dustproof mesh plate is used to prevent external dirt from entering into the exhaust pipe.

[0014] Preferably, the blocking assembly comprises a sealing cover arranged at the top end of the airway tube, an electric push rod is embedded and connected in the middle of the sealing cover, and a pressing plate is installed at the telescopic end of the electric push rod;

[0015] Through holes are provided at the four corners of the top surface of the cover, and a positioning screw is inserted into the inner cavity of each through hole, and the bottom end of the positioning screw is rotatably connected to the four corners of the top end of the air guide tube.

[0016] Preferably, the sealing assembly further comprises a rubber plate, which is arranged on the bottom surface of the pressing plate and is used to enhance the sealing performance of the pressing plate to the support ring.

[0017] Preferably, the control assembly comprises a waterproof box arranged on the side wall of the air guide assembly, the open end of the waterproof box is provided with a box cover, and the inner cavity of the waterproof box is provided with a microcontroller;

[0018] A waterproof junction box is arranged in the middle of the top surface of the waterproof box, and a buzzer is arranged on the outer wall surface of the box cover. Beneficial Effects

[0019] The utility model provides an emergency relief device for medium and high pressure natural gas pipelines. Compared with the prior art, it has the following beneficial effects:

[0020] The medium- and high-pressure natural gas pipeline emergency relief device can connect the delivery pipe with the external pipeline through two flange rings, so as to transport medium- and high-pressure natural gas. Through the gas guide component, it can be embedded in the middle of the top surface of the delivery pipe, and the plugging component and the control component can be installed. At the same time, the pressure of the natural gas in the delivery pipe can be monitored, and the gas guide component can send the monitoring data to the control component.

[0021] When the gas guide component detects that the pressure of natural gas exceeds the preset value, the control component will control the plugging component to shrink, so that the plugging component can release the blockage of the gas outlet end of the gas guide component, and then the natural gas in the transmission pipe can be discharged through the gas guide component, so as to achieve the purpose of emergency release of natural gas and ensure the maintenance safety of the natural gas transportation pipeline;

[0022] When the gas guide component detects that the pressure of natural gas is lower than the preset value, the control component will control the blocking component to extend, so that the blocking component can block and intercept the gas guide component to prevent the leakage of natural gas flowing in the subsequent transmission pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0024] Figure 2 It is a schematic diagram of the side structure of the utility model.

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the gas guide component of the utility model.

[0027] Figure 5 This is a schematic diagram of the exhaust structure of the utility model.

[0028] Figure 6 This is a schematic diagram of the structure of the plugging component of the utility model.

[0029] Figure 7 This is a schematic diagram of the explosion structure of the control component of the utility model.

[0030] In the figure: 1. delivery pipe; 2. flange ring; 3. air guide assembly; 31. air guide pipe; 32. support ring; 33. connecting pipe; 34. air pressure sensor; 35. exhaust part; 351. exhaust pipe; 352. check valve; 353. dustproof mesh plate; 4. sealing assembly; 41. sealing cover; 42. electric push rod; 43. pressure plate; 44. rubber sheet; 45. through hole; 46. positioning screw; 5. control assembly; 51. waterproof box; 52. box cover; 53. microcontroller; 54. waterproof junction box; 55. buzzer. DETAILED DESCRIPTION

[0031] 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. 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 creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-3 The utility model provides a technical solution: an emergency relief device for a medium- and high-pressure natural gas pipeline, comprising a delivery pipe 1, with flange rings 2 fixedly arranged at both ends of the delivery pipe 1, and also comprising: an air guide component 3, the air guide component 3 is embedded in the middle of the top surface of the delivery pipe 1, the bottom end of the air guide component 3 is connected with the inner cavity of the delivery pipe 1, and the air guide component 3 is used to connect the delivery pipe 1 with the outside; a plugging component 4, the plugging component 4 is arranged at the top of the air guide component 3, and the telescopic end of the plugging component 4 is blocked with the middle of the inner cavity of the air guide component 3, and the plugging component 4 is used to block the air guide component 3; and a control component 5, the control component 5 is arranged in the middle of the outer wall of the air guide component 3, and the control component 5 is used to control the operation of the plugging component 4;

[0033] The delivery pipe 1 can be connected to the external pipeline through two flange rings 2, so that medium and high pressure natural gas can be transported. The gas guide component 3 can be embedded in the middle of the top surface of the delivery pipe 1, and the plugging component 4 and the control component 5 can be installed. At the same time, the pressure of the natural gas in the delivery pipe 1 can be monitored, and the gas guide component 3 can send the monitoring data to the control component 5. When the gas guide component 3 detects that the pressure of the natural gas exceeds the preset value, the control component 5 will control the plugging component 4 to shrink, so that the plugging component 4 can release the blockage of the gas outlet end of the gas guide component 3, and then the natural gas in the delivery pipe 1 can be discharged through the gas guide component 3, so as to achieve the purpose of emergency release of natural gas, thereby ensuring the maintenance safety of the natural gas transportation pipeline. When the gas guide component 3 detects that the pressure of the natural gas is lower than the preset value, the control component 5 will control the plugging component 4 to extend, so that the plugging component 4 can block and intercept the gas guide component 3 to prevent the subsequent leakage of natural gas flowing in the delivery pipe 1.

[0034] See also Figure 3-Figure 5The air guide assembly 3 includes an air guide pipe 31 embedded in the middle of the top surface of the delivery pipe 1, and a support ring 32 is arranged at the lower middle position of the inner cavity of the air guide pipe 31; a connecting pipe 33 is embedded and connected to the outer wall of the air guide pipe 31 and located below the support ring 32, and an air pressure sensor 34 is arranged in the inner cavity of the connecting pipe 33; an exhaust part 35 is embedded and connected to the side wall of the air guide pipe 31 and located above the support ring 32, and the exhaust part 35 includes an exhaust pipe 351 embedded in the side wall of the air guide pipe 31 and located above the support ring 32, and a check valve 352 is connected in series in the middle of the exhaust pipe 351, and the exhaust part 35 also includes a dustproof mesh plate 353, which is arranged at the air outlet end of the exhaust pipe 351, and the dustproof mesh plate 353 is used to prevent external dirt from entering the exhaust pipe 351;

[0035] The air guide tube 31 in the air guide assembly 3 can be embedded and installed in the middle of the top surface of the delivery pipe 1, and the support ring 32, the connecting tube 33 and the exhaust pipe 351 can be installed. Then, the support ring 32 can be matched with the telescopic end of the support ring 32 to block it, thereby achieving the purpose of intercepting natural gas. Since the connecting tube 33 is embedded and connected to the outer wall of the air guide tube 31 and located below the support ring 32, and the inner cavity of the connecting tube 33 is provided with an air pressure sensor 34, the air pressure sensor 34 can monitor the pressure of the natural gas in the delivery pipe 1 through the air guide tube 31, and can also The monitoring data is sent to the control component 5. Since the exhaust pipe 351 is embedded in the side wall of the air guide pipe 31 and is located above the support ring 32, when the delivery pipe 1 needs to be released, the sealing component 4 is contracted so that its bottom end can be located above the exhaust pipe 351, thereby facilitating the natural gas in the delivery pipe 1 to flow to the exhaust pipe 351 through the air guide pipe 31 so that the natural gas can be discharged. The check valve 352 can prevent the backflow of external gas, thereby ensuring the safety of natural gas release. The dustproof mesh plate 353 can prevent external dirt from entering the exhaust pipe 351.

[0036] See also Figure 4 , Figure 6 The plugging assembly 4 includes a cover 41 disposed at the top of the air guide tube 31, an electric push rod 42 is embedded and connected in the middle of the cover 41, and a pressing plate 43 is installed at the telescopic end of the electric push rod 42; through holes 45 are opened at the four corners of the top surface of the cover 41, and a positioning screw 46 is inserted into the inner cavity of each through hole 45, and the bottom end of the positioning screw 46 is rotatably connected to the four corners of the top of the air guide tube 31. The plugging assembly 4 also includes a rubber plate 44, which is disposed on the bottom surface of the pressing plate 43, and the rubber plate 44 is used to strengthen the sealing performance of the pressing plate 43 to the support ring 32;

[0037] Through the sealing cover 41 in the sealing component 4, it can be fixed to the top of the air duct 31 through the through hole 45 and the positioning screw 46, and the electric push rod 42 can be installed. Then, through the extension of the electric push rod 42, the pressure plate 43 can be synchronously driven to move downward, so that the pressure plate 43 can be pressed against the top surface of the support ring 32, so as to achieve the purpose of intercepting natural gas in the convection air duct 31. Through the contraction of the electric push rod 42, the pressure plate 43 can be driven to move upward, so that the pressure plate 43 can be located above the exhaust pipe 351, so that the natural gas in the delivery pipe 1 can flow to the exhaust pipe 351 through the air duct 31, so that the natural gas can be discharged. The rubber plate 44 can enhance the sealing of the pressure plate 43 against the support ring 32.

[0038] See also Figure 4 , Figure 7 The control component 5 includes a waterproof box 51 arranged on the side wall of the air guide component 3, a box cover 52 is arranged at the open end of the waterproof box 51, and a microcontroller 53 is arranged in the inner cavity of the waterproof box 51; a waterproof junction box 54 is arranged in the middle of the top surface of the waterproof box 51, and a buzzer 55 is arranged on the outer wall surface of the box cover 52;

[0039] Through the waterproof box 51 in the control component 5, it can be installed on the side wall of the air guide component 3, and can cooperate with the box cover 52 to install the microcontroller 53, the waterproof junction box 54 and the buzzer 55. Then, through the microcontroller 53, it can be electrically connected to the air pressure sensor 34, the electric push rod 42 and other equipment through the waterproof junction box 54, and can receive the data sent by the air pressure sensor 34. At the same time, it can flexibly control the operation of the electric push rod 42 and the buzzer 55, and through the operation of the buzzer 55, an alarm can be sounded, thereby achieving the purpose of warning and reminder.

[0040] During operation, the delivery pipe 1 can be connected to the external pipeline through two flange rings 2, so that medium and high pressure natural gas can be transported. The gas guide component 3 can be embedded in the middle of the top surface of the delivery pipe 1, and the plugging component 4 and the control component 5 can be installed. At the same time, the pressure of the natural gas in the delivery pipe 1 can be monitored, and the gas guide component 3 can send the monitoring data to the control component 5. When the gas guide component 3 detects that the pressure of the natural gas exceeds the preset value, the control component 5 will control the plugging component 4 to shrink, so that the plugging component 4 can release the blockage of the gas outlet end of the gas guide component 3, and then the natural gas in the delivery pipe 1 can be discharged through the gas guide component 3, so as to achieve the purpose of emergency release of natural gas, thereby ensuring the maintenance safety of the natural gas transportation pipeline. When the gas guide component 3 detects that the pressure of the natural gas is lower than the preset value, the control component 5 will control the plugging component 4 to extend, so that the plugging component 4 can block and intercept the gas guide component 3 to prevent the subsequent leakage of natural gas flowing in the delivery pipe 1.

[0041] The air guide tube 31 in the air guide assembly 3 can be embedded and installed in the middle of the top surface of the delivery pipe 1, and the support ring 32, the connecting tube 33 and the exhaust pipe 351 can be installed. Then, the support ring 32 can be matched with the telescopic end of the support ring 32 to block it, thereby achieving the purpose of intercepting natural gas. Since the connecting tube 33 is embedded and connected to the outer wall of the air guide tube 31 and located below the support ring 32, and the inner cavity of the connecting tube 33 is provided with an air pressure sensor 34, the air pressure sensor 34 can monitor the pressure of the natural gas in the delivery pipe 1 through the air guide tube 31, and can also The monitoring data is sent to the control component 5. Since the exhaust pipe 351 is embedded in the side wall of the air guide pipe 31 and is located above the support ring 32, when the delivery pipe 1 needs to be released, the sealing component 4 is contracted so that its bottom end can be located above the exhaust pipe 351, thereby facilitating the natural gas in the delivery pipe 1 to flow to the exhaust pipe 351 through the air guide pipe 31 so that the natural gas can be discharged. The check valve 352 can prevent the backflow of external gas, thereby ensuring the safety of natural gas release. The dustproof mesh plate 353 can prevent external dirt from entering the exhaust pipe 351.

[0042] Through the sealing cover 41 in the sealing component 4, it can be fixed to the top of the air duct 31 through the through hole 45 and the positioning screw 46, and the electric push rod 42 can be installed. Then, through the extension of the electric push rod 42, the pressure plate 43 can be synchronously driven to move downward, so that the pressure plate 43 can be pressed against the top surface of the support ring 32, so as to achieve the purpose of intercepting natural gas in the convection air duct 31. Through the contraction of the electric push rod 42, the pressure plate 43 can be driven to move upward, so that the pressure plate 43 can be located above the exhaust pipe 351, so that the natural gas in the delivery pipe 1 can flow to the exhaust pipe 351 through the air duct 31, so that the natural gas can be discharged. The rubber plate 44 can enhance the sealing of the pressure plate 43 against the support ring 32.

[0043] Through the waterproof box 51 in the control component 5, it can be installed on the side wall of the air guide component 3, and can cooperate with the box cover 52 to install the microcontroller 53, the waterproof junction box 54 and the buzzer 55. Then, through the microcontroller 53, it can be electrically connected to the air pressure sensor 34, the electric push rod 42 and other equipment through the waterproof junction box 54, and can receive the data sent by the air pressure sensor 34. At the same time, it can flexibly control the operation of the electric push rod 42 and the buzzer 55, and through the operation of the buzzer 55, an alarm can be sounded, thereby achieving the purpose of warning and reminder.

[0044] In summary, the device can release the natural gas pipeline, thereby preventing the natural gas pressure in the pipeline from being too high and causing safety accidents, thereby improving the safety of natural gas pipeline maintenance.

[0045] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An emergency relief device for a medium- and high-pressure natural gas pipeline, comprising a delivery pipe (1), both ends of which are fixedly provided with flange rings (2), characterized in that: Also includes: An air guide component (3), the air guide component (3) being embedded in the middle of the top surface of the delivery tube (1), the bottom end of the air guide component (3) being in communication with the inner cavity of the delivery tube (1), and the air guide component (3) being used to connect the delivery tube (1) with the outside; A blocking component (4), the blocking component (4) being arranged at the top end of the air guide component (3), and the telescopic end of the blocking component (4) blocking the middle of the inner cavity of the air guide component (3), the blocking component (4) being used to block the air guide component (3); and A control component (5), the control component (5) being arranged in the middle of the outer wall of the air guide component (3), and the control component (5) being used to control the operation of the blocking component (4).

2. According to claim 1, a medium- and high-pressure natural gas pipeline emergency relief device is characterized in that: The air guide assembly (3) comprises an air guide tube (31) embedded in the middle of the top surface of the delivery tube (1), and a support ring (32) is provided at the lower middle of the inner cavity of the air guide tube (31); A connecting pipe (33) is embedded and connected to the outer wall of the air guide pipe (31) and located below the support ring (32), and an air pressure sensor (34) is provided in the inner cavity of the connecting pipe (33); An exhaust portion (35) is embedded and connected to the side wall of the air guide pipe (31) and located above the support ring (32).

3. The medium- and high-pressure natural gas pipeline emergency relief device according to claim 2 is characterized by: The exhaust portion (35) comprises an exhaust pipe (351) embedded in the side wall of the air guide pipe (31) and located above the support ring (32), and a check valve (352) is connected in series in the middle of the exhaust pipe (351).

4. The medium- and high-pressure natural gas pipeline emergency relief device according to claim 3 is characterized by: The exhaust portion (35) further comprises a dustproof screen (353), wherein the dustproof screen (353) is arranged at the air outlet end of the exhaust pipe (351), and the dustproof screen (353) is used to prevent external dirt from entering the exhaust pipe (351).

5. The medium- and high-pressure natural gas pipeline emergency relief device according to claim 2 is characterized by: The blocking assembly (4) comprises a sealing cover (41) arranged at the top end of the air guide tube (31), an electric push rod (42) is embedded and connected in the middle of the sealing cover (41), and a pressing plate (43) is installed at the telescopic end of the electric push rod (42); Through holes (45) are provided at the four corners of the top surface of the cover (41), a positioning screw (46) is inserted into the inner cavity of each through hole (45), and the bottom end of the positioning screw (46) is rotatably connected to the four corners of the top end of the air guide tube (31).

6. The medium- and high-pressure natural gas pipeline emergency relief device according to claim 5 is characterized by: The sealing assembly (4) further comprises a rubber plate (44), wherein the rubber plate (44) is arranged on the bottom surface of the pressing plate (43), and the rubber plate (44) is used to enhance the sealing performance of the pressing plate (43) on the support ring (32).

7. The medium- and high-pressure natural gas pipeline emergency relief device according to claim 1 is characterized by: The control component (5) comprises a waterproof box (51) arranged on the side wall of the air guide component (3); a box cover (52) is arranged at the open end of the waterproof box (51); and a microcontroller (53) is arranged in the inner cavity of the waterproof box (51); A waterproof junction box (54) is provided in the middle of the top surface of the waterproof box (51), and a buzzer (55) is provided on the outer wall surface of the box cover (52).

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