CN211715857U - Automatic device that diffuses of low pressure overhead pipeline superpressure - Google Patents

Abstract

The utility model belongs to the technical field of gas diffuses burner, concretely relates to automatic device that diffuses of low pressure built on stilts pipeline superpressure, including the installation pipe, the installation pipe is equipped with the working pipe, the working pipe is equipped with the working tube lid, the working pipe is equipped with L shape breather pipe, the working pipe is equipped with the limiting plate, the limiting plate is equipped with first air vent, the limiting plate upper end is equipped with first annular rubber packing pad, lower seal seat, spring and upper seal seat, lower seal seat is equipped with the second air vent, the upper seal seat side is equipped with the round seal groove, the seal groove is equipped with the rubber seal, the upper seal seat upper end is rotated and is connected with the lead screw, the lead screw upwards runs through the working tube lid, and with working tube lid threaded connection, the lead screw upper end is equipped with the rectangle rotation post, L shape breather pipe; the utility model discloses when solving current diffusing device and need artifical the emission, still solved current diffusing device and needed the problem of artifical ignition.

Description

Automatic device that diffuses of low pressure overhead pipeline superpressure

Technical Field

The utility model belongs to the technical field of the burner is diffused in the gas, concretely relates to automatic device that diffuses of low pressure overhead pipeline superpressure.

Background

The low-pressure overhead pipeline is a pipeline for transmitting natural gas, which belongs to a part of a gas pipe network, when the gas pipe network needs maintenance, connection and fire operation, the natural gas in the natural gas pipe network needs to be emptied, the gas such as air is usually filled in the pipe network for pressurizing the pipe network, so that the residual gas in the pipe network is completely discharged and discharged to the high altitude, and the discharged gas needs to be combusted, so that the construction safety of pipeline construction personnel can be ensured, meanwhile, the potential safety hazard caused by high gas concentration in the air can be prevented, the environment pollution caused by the gas is avoided, the device for discharging the gas and combusting the gas is a diffusing device, at present, most diffusing devices on the market generally need manual operation to perform the operations of gas discharging, gas combusting and the like, and the operation mode not only can reduce the working efficiency in time, moreover, the pressure of natural gas at the initial stage of diffusing is high, manual ignition is dangerous, and the low-pressure overhead pipeline is relatively high in erection position, so that the low-pressure overhead pipeline is not beneficial to manual operation of constructors.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: aims to provide an automatic overpressure diffusing device for a low-pressure overhead pipeline, which is used for solving the problems in the background technology.

In order to realize the technical purpose, the utility model discloses a technical scheme as follows:

an automatic overpressure relief device for a low-pressure overhead pipeline comprises an installation pipe, a controller, a pressure sensor and an electronic igniter, wherein a working pipe is fixedly connected to the middle of the installation pipe and is communicated with the installation pipe, a working pipe cover is bolted to the upper end of the working pipe, an L-shaped vent pipe is welded on the left side of the working pipe and is communicated with the working pipe, a control box is arranged on the side face of the working pipe, the controller is arranged in the control box, the controller is electrically connected with an external power supply, a limiting plate is welded on the lower portion of the inner side of the working pipe and is positioned on the lower side of the L-shaped vent pipe, the limiting plate comprises a first vent hole arranged in the middle of the limiting plate, a first annular rubber sealing gasket, a lower sealing seat, a spring and an upper sealing seat are sequentially assembled at the upper end of the limiting plate from bottom to top, and, the lower sealing seat is provided with a plurality of second vent holes which are vertically penetrated and uniformly distributed around the axis of the lower sealing seat, the second vent holes are all positioned right above the first annular rubber sealing gasket, the side surface of the upper sealing seat is provided with a circle of sealing groove which is assembled with a rubber sealing ring, the upper end of the upper sealing seat is rotatably connected with a screw rod, the screw rod upwards penetrates through the working pipe cover and is in threaded connection with the working pipe cover, the upper end of the screw rod is provided with a rectangular rotating column, the L-shaped vent pipe comprises a transverse pipe and a vertical pipe, the air pressure sensor is fixedly connected with the transverse pipe, the upper end of the vertical pipe is in bolted connection with a burner, the burner comprises a combustion pipe, a rain shield and a combustion pipe, the side surface of the combustion pipe is uniformly provided with a plurality of air outlet grooves, the air outlet grooves are vertical bar-, the rain baffle is arranged at the upper end of the combustion pipe, the heat insulation plate is arranged at the lower side of the air outlet groove, the air pressure sensor is in signal connection with the controller, and the controller is electrically connected with the electronic igniter.

By adopting the technical scheme of the utility model, the first annular rubber sealing gasket is arranged between the lower sealing seat and the limiting plate, so that the sealing property between the lower sealing seat and the limiting plate can be enhanced; the sealing groove on the upper sealing seat is matched with a rubber sealing ring and used for enhancing the sealing strength between the upper sealing seat and the inner wall of the working pipe and preventing natural gas from leaking from the working pipe cover; the external power supply is used for supplying power to the controller; the rain shield is used for shielding rain and preventing water from entering the combustor; the rectangular rotating column is arranged, so that a wrench and other tools can be conveniently engaged, and the screw rod can be rotated after the wrench engages the rectangular rotating column; the heat insulation plate is used for heat insulation and preventing flames from heating the vertical pipe; the gas outlet grooves are uniformly arranged on the side surface of the combustion pipe, the shape of each gas outlet groove is vertical, and the matching of the gas outlet grooves and the rain baffle can effectively reduce the flow velocity of natural gas and prevent flame from being blown out by the natural gas; the spring is matched with the upper sealing seat and the lower sealing seat, so that the lower sealing seat is abutted with the first annular rubber sealing gasket, the first vent hole and the second vent hole are sealed, and natural gas cannot be discharged; the lower sealing seat is rotationally connected with the screw rod, and the screw rod is in threaded connection with the working pipe cover, so that when the screw rod is rotated, the lower sealing seat can move upwards or downwards according to the rotation direction of the screw rod, when the lower sealing seat moves up and down, the compression amount of the spring can be changed, and the pressure of the lower sealing seat acting on the first annular rubber sealing gasket can be changed along with the change of the compression amount, so that the pressure required when the lower sealing seat is pushed away by natural gas can be adjusted, and the device has more flexibility; before the device is used, the whole device is connected with a gas pipe network through an installation pipe, when the gas pipe network needs to be diffused, gas such as air can be filled into the gas pipe network for pressurization, when the internal gas pressure is greater than the elastic force of a spring, a lower sealing seat is pushed away, natural gas enters an L-shaped vent pipe through a first vent hole and a second vent hole in sequence, and the L-shaped vent pipe sends the natural gas to a combustor, so that automatic diffusion is realized, the diffusion mode is timely, and manual operation of construction personnel is not needed; when the pressure sensor senses that the pressure in the transverse pipe is greater than the atmospheric pressure, the signal is transmitted to the controller, the controller controls the electronic igniter to be electrified to work after receiving the signal, and the electronic igniter ignites the natural gas in the burner after being electrified, so that automatic ignition is realized, constructors do not need to perform manual operation, and the safety is higher; when the air pressure sensor senses that the pressure in the transverse pipe returns to the atmospheric pressure, the signal is transmitted to the controller, and the controller receives the pressure returning to the atmospheric pressure signal and then controls the electronic igniter to power off and stop working; the utility model discloses when solving current diffusing device and need artifical the emission, still solved current diffusing device and needed the problem of artifical ignition.

Further inject, work tube cap upper end fixedly connected with and lead screw assorted L shape supporting seat, L shape supporting seat is including erecting backup pad and horizontal limiting plate, the lead screw upwards runs through horizontal limiting plate, and with horizontal limiting plate sliding connection, the upside is equipped with the upper nut with lead screw threaded connection, horizontal limiting plate downside is equipped with the lower nut with lead screw threaded connection. With the structure, the upper nut and the lower nut are screwed to the transverse limiting plate, so that the screw rod can be prevented from loosening.

Further inject, lower seal receptacle upper end is equipped with down the spring groove with spring assorted, go up the seal receptacle lower extreme and be equipped with the spring groove on with spring assorted. With the structure, the spring can be limited.

Further limit, be equipped with second annular rubber packing between working tube and the working tube lid. With such a structure, the sealing performance between the working pipe and the working pipe cover can be enhanced.

Compared with the prior art, the utility model has the following advantages:

1. when the gas pipe network needs to be diffused, gas such as air and the like is filled into the gas pipe network for pressurization, when the internal gas pressure is larger than the elastic force of the spring, the lower sealing seat is pushed away, natural gas enters the L-shaped vent pipe through the first vent hole and the second vent hole in sequence, and the L-shaped vent pipe sends the natural gas to the combustor, so that automatic diffusion is realized, the diffusion mode is timely, and manual operation of constructors is not needed;

2. when the pressure sensor senses that the pressure in the transverse pipe is greater than the atmospheric pressure, the signal is transmitted to the controller, the controller controls the electronic igniter to be electrified to work after receiving the signal, and the electronic igniter ignites the natural gas in the burner after being electrified, so that automatic ignition is realized, constructors do not need to perform manual operation, and the safety is higher;

3. the lower sealing seat is rotationally connected with the screw rod, and the screw rod is in threaded connection with the working pipe cover, so that when the screw rod is rotated, the lower sealing seat can move upwards or downwards according to the rotation direction of the screw rod, when the lower sealing seat moves up and down, the compression amount of the spring can be changed, and the pressure of the lower sealing seat acting on the first annular rubber sealing gasket can be changed along with the change of the compression amount, so that the pressure required when the lower sealing seat is pushed away by natural gas can be adjusted, and the device has more flexibility;

4. the gas outlet grooves are uniformly arranged on the side surface of the combustion pipe, the shape of each gas outlet groove is vertical, and the matching of the gas outlet grooves and the rain baffle can effectively reduce the flow velocity of natural gas and prevent flame from being blown out by the natural gas;

5. the rectangular rotating column is arranged, so that a wrench and other tools can be conveniently engaged, and the screw rod can be rotated after the wrench engages the rectangular rotating column;

drawings

The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

fig. 1 is a schematic structural view of an embodiment of an automatic overpressure relief device for a low-pressure overhead pipeline of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

fig. 3 is a schematic cross-sectional view of an embodiment of an automatic overpressure relief device for a low-pressure overhead pipeline according to the present invention;

fig. 4 is a schematic sectional structure view of an embodiment of an automatic overpressure relief device for a low-pressure overhead pipeline of the present invention;

the main element symbols are as follows:

the device comprises a mounting pipe 1, an air pressure sensor 11, an electronic igniter 12, a working pipe 2, a control box 201, a limiting plate 21, a first vent hole 211, a first annular rubber sealing gasket 22, a lower sealing seat 23, a second vent hole 231, a spring 24, an upper sealing seat 25, a sealing groove 251, a screw rod 252, a rectangular rotating column 253, a working pipe cover 3, an L-shaped vent pipe 4, a transverse pipe 41, a vertical pipe 42, a burner 5, a combustion pipe 51, an air outlet groove 511, a rain baffle plate 52, a heat insulation plate 53, an L-shaped supporting seat 6, a vertical supporting plate 61, a transverse limiting plate 62, an upper nut 63, a lower nut 64, a lower spring groove 65, an upper spring groove 66 and a second annular rubber sealing gasket 67.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.

As shown in FIGS. 1-4, the utility model discloses an automatic device that diffuses of low pressure overhead pipeline superpressure, including installation pipe 1, a controller, baroceptor 11 and electronic ignition ware 12, installation pipe 1 middle part fixedly connected with work pipe 2, work pipe 2 communicates with each other with installation pipe 1, bolted connection has work tube cap 3 on the work pipe 2, the welding of work pipe 2 left side has L shape breather pipe 4, L shape breather pipe 4 communicates with each other with work pipe 2, work pipe 2 side is equipped with control box 201, the controller sets up in control box 201, controller electric connection has external power source, the welding of the inboard lower part of work pipe 2 has limiting plate 21, limiting plate 21 is located L shape breather pipe 4 downside, limiting plate 21 is including setting up the first air vent 211 at limiting plate 21 middle part, limiting plate 21 upper end from supreme first annular rubber packing pad 22 that has been assembled in proper order down, lower seal receptacle 23 down, The shape of the first annular rubber sealing gasket 22 is matched with the limiting plate 21, a plurality of second vent holes 231 are arranged in the lower sealing seat 23 in a vertically penetrating manner, the plurality of second vent holes 231 are uniformly distributed around the axis of the lower sealing seat 23, the plurality of second vent holes 231 are all positioned right above the first annular rubber sealing gasket 22, a circle of sealing groove 251 is arranged on the side surface of the upper sealing seat 25, the sealing groove 251 is provided with a rubber sealing ring, the upper end of the upper sealing seat 25 is rotatably connected with a screw rod 252, the screw rod 252 upwards penetrates through the working tube cover 3 and is in threaded connection with the working tube cover 3, a rectangular rotating column 253 is arranged at the upper end of the screw rod 252, the L-shaped vent pipe 4 comprises a transverse pipe 41 and a vertical pipe 42, the air pressure sensor 11 is fixedly connected with the transverse pipe 41, the upper end of the vertical pipe 42 is in bolted connection with a burner 5, the burner 5 comprises a combustion, the air outlet groove 511 is in a vertical bar shape, the electronic igniter 12 is fixedly connected with the combustion pipe 51, the rain baffle plate 52 is arranged at the upper end of the combustion pipe 51, the heat insulation plate 53 is arranged at the lower side of the air outlet groove 511, the air pressure sensor 11 is in signal connection with the controller, and the controller is electrically connected with the electronic igniter 12.

By adopting the technical scheme of the utility model, the first annular rubber sealing gasket 22 is arranged between the lower sealing seat 23 and the limiting plate 21, so that the sealing property between the lower sealing seat 23 and the limiting plate 21 can be enhanced; the sealing groove 251 on the upper sealing seat 25 is matched with a rubber sealing ring for enhancing the sealing strength between the upper sealing seat 25 and the inner wall of the working pipe 2 and preventing natural gas from leaking from the working pipe cover 3; the external power supply is used for supplying power to the controller; the rain shield 52 is used for shielding rain and preventing water from entering the combustor 5; the rectangular rotating column 253 is arranged, so that a wrench and other tools can be conveniently engaged, the screw rod 252 can be rotated after the wrench engages the rectangular rotating column 253, and compared with the design that a rotating handle is arranged, the screw rod 252 can be prevented from being rotated randomly; the thermal shield 53 is used for thermal insulation to prevent flames from heating the standpipe 42; the air outlet grooves 511 are uniformly arranged on the side surfaces of the combustion pipes 51, the air outlet grooves 511 are arranged in a vertical strip shape, and the air outlet grooves are matched with the upper rain baffles 52, so that the flow rate of natural gas can be effectively reduced, and flame can be prevented from being blown out by the natural gas; the spring 24 is matched with the upper sealing seat 25 and the lower sealing seat 23, so that the lower sealing seat 23 is abutted against the first annular rubber sealing gasket 22, the first vent hole 211 and the second vent hole 231 are sealed, and natural gas cannot be discharged; because the lower sealing seat 23 is rotationally connected with the screw rod 252, and the screw rod 252 is in threaded connection with the working tube cover 3, when the screw rod 252 is rotated, the lower sealing seat 23 moves upwards or downwards according to the rotation direction of the screw rod 252, when the lower sealing seat 23 moves upwards and downwards, the compression amount of the spring 24 is changed, the pressure of the lower sealing seat 23 acting on the first annular rubber sealing gasket 22 is changed, and thus the pressure required when the lower sealing seat 23 is pushed away by natural gas can be adjusted, so that the device has more flexibility; before the device is used, the whole device is connected with a gas pipe network through the mounting pipe 1, when the gas pipe network needs to be diffused, gas such as air can be filled into the gas pipe network for pressurization, when the internal gas pressure is larger than the elastic force of the spring 24, the lower sealing seat 23 is pushed away, natural gas enters the L-shaped vent pipe 4 through the first vent hole 211 and the second vent hole 231 in sequence, the L-shaped vent pipe 4 sends the natural gas to the combustor 5, automatic diffusion is achieved, the diffusion mode is timely, and manual operation of construction personnel is not needed; when the pressure sensor 11 senses that the pressure in the transverse pipe 41 is greater than the atmospheric pressure, a signal is transmitted to the controller, the controller controls the electronic igniter 12 to be electrified to work after receiving the signal, and the electronic igniter 12 ignites the natural gas in the burner 5 after being electrified, so that automatic ignition is realized, a constructor does not need to perform manual operation, and the safety is higher; when the air pressure sensor 11 senses that the pressure in the transverse pipe 41 returns to the atmospheric pressure, a signal is transmitted to the controller, and the controller controls the electronic igniter 12 to be powered off and stop working after receiving the pressure return to the atmospheric pressure signal; the utility model discloses when solving current diffusing device and need artifical the emission, still solved current diffusing device and needed the problem of artifical ignition.

Preferably, the upper end of the working tube cover 3 is fixedly connected with an L-shaped supporting seat 6 matched with the screw rod 252, the L-shaped supporting seat 6 comprises a vertical supporting plate 61 and a horizontal limiting plate 62, the screw rod 252 upwards penetrates through the horizontal limiting plate 62 and is in sliding connection with the horizontal limiting plate 62, an upper nut 63 in threaded connection with the screw rod 252 is arranged on the upper side of the screw rod 252, and a lower nut 64 in threaded connection with the screw rod 252 is arranged on the lower side of the horizontal limiting plate 62. With this structure, the upper nut 63 and the lower nut 64 are both tightened against the lateral stopper plate 62, and the lead screw 252 can be prevented from loosening. In fact, other structures capable of preventing the screw 252 from loosening may be used according to circumstances.

Preferably, the upper end of the lower sealing seat 23 is provided with a lower spring groove 65 matched with the spring 24, and the lower end of the upper sealing seat 25 is provided with an upper spring groove 66 matched with the spring 24. With this structure, the spring 24 can be restrained. In fact, other structures capable of limiting the position of the spring 24 are also contemplated.

Preferably, a second annular rubber gasket 67 is provided between the working tube 2 and the working tube cover 3. With this structure, the sealing performance between the working pipe 2 and the working pipe cover 3 can be enhanced. In fact, other structures capable of enhancing the sealing property between the working tube 2 and the working tube cover 3 may be used according to circumstances.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (4)

1. The utility model provides an automatic device that diffuses of low pressure overhead line superpressure, is including installation pipe (1), controller, baroceptor (11) and electronic igniter (12), its characterized in that: installation pipe (1) middle part fixedly connected with work pipe (2), work pipe (2) communicate with each other with installation pipe (1), bolted connection has work tube cap (3) on work pipe (2), the welding of work pipe (2) left side has L shape breather pipe (4), L shape breather pipe (4) communicate with each other with work pipe (2), work pipe (2) side is equipped with control box (201), the controller sets up in control box (201), controller electric connection has external power source, the welding of the inboard lower part of work pipe (2) has limiting plate (21), limiting plate (21) are located L shape breather pipe (4) downside, limiting plate (21) are including setting up first air vent (211) at limiting plate (21) middle part, supreme first annular rubber packing pad (22) of being equipped with in proper order down in limiting plate (21) upper end, Lower seal receptacle (23), spring (24) and upper seal receptacle (25), first annular rubber seal pad (22) shape and limiting plate (21) phase-match, lower seal receptacle (23) runs through from top to bottom and is equipped with a plurality of second ventholes (231), a plurality of second venthole (231) are around lower seal receptacle (23) axis evenly distributed, a plurality of second venthole (231) all are located directly over first annular rubber seal pad (22), the side of upper seal receptacle (25) is equipped with round seal groove (251), seal groove (251) are equipped with rubber seal, upper seal receptacle (25) upper end rotation is connected with lead screw (252), lead screw (252) upwards run through work tube cap (3), and with work tube cap (3) threaded connection, lead screw (252) upper end is equipped with rectangle column (253) that rotates, L shape breather pipe (4) are including violently managing (41) and standpipe (42), baroceptor (11) and violently pipe (41) fixed connection, standpipe (42) upper end bolted connection has combustor (5), combustor (5) are including combustion tube (51), weather shield (52) and heat insulating board (53), combustion tube (51) side evenly is equipped with a plurality of air outlet groove (511), air outlet groove (511) shape is vertical bar, electronic igniter (12) and combustion tube (51) fixed connection, weather shield (52) set up in combustion tube (51) upper end, heat insulating board (53) set up at air outlet groove (511) downside, baroceptor (11) and controller signal connection, controller and electronic igniter (12) electric connection.

2. The automatic overpressure relieving device for the low-pressure overhead pipeline of claim 1, wherein: working tube lid (3) upper end fixedly connected with and lead screw (252) assorted L shape supporting seat (6), L shape supporting seat (6) are including erecting backup pad (61) and horizontal limiting plate (62), lead screw (252) upwards run through horizontal limiting plate (62), and with horizontal limiting plate (62) sliding connection, horizontal limiting plate (62) upside is equipped with upper nut (63) with lead screw (252) threaded connection, horizontal limiting plate (62) downside is equipped with lower nut (64) with lead screw (252) threaded connection.

3. The automatic overpressure relieving device for the low-pressure overhead pipeline of claim 1, wherein: the upper end of the lower sealing seat (23) is provided with a lower spring groove (65) matched with the spring (24), and the lower end of the upper sealing seat (25) is provided with an upper spring groove (66) matched with the spring (24).

4. The automatic overpressure relieving device for the low-pressure overhead pipeline of claim 1, wherein: and a second annular rubber sealing gasket (67) is arranged between the working pipe (2) and the working pipe cover (3).

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