CN112728272A

CN112728272A - Gas pipeline protection device based on air pressure

Info

Publication number: CN112728272A
Application number: CN202011550620.4A
Authority: CN
Inventors: 胡艳梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-04-30

Abstract

The invention belongs to the field of energy supply, and particularly relates to a gas pipeline protection device based on air pressure, which comprises a high-pressure gas pipe, a pressure reducing valve, a low-pressure gas pipe and a heating mechanism arranged on the low-pressure gas pipe, wherein the high-pressure gas pipe, the pressure reducing valve, the low-pressure gas pipe and the heating mechanism are sequentially connected, the heating mechanism consists of a plurality of heating assemblies, adjacent heating assemblies are communicated through a connecting pipe, the heating assembly far away from the pressure reducing valve is connected with a circulating pump, the circulating pump is connected with a water supply mechanism, and the heating assembly near the pressure reducing valve is. According to the invention, the low-pressure gas transmission pipe can be heated in multiple sections by arranging the plurality of heating assemblies, and the temperature of water in the heating assembly which is farther away from the pressure reducing valve is higher, so that the problems that the temperature of gas in the pipeline close to the pressure reducing valve is increased, the gasification volume is rapidly expanded, the pressure at the heating part is rapidly increased because one side far away from the pressure reducing valve is still a hydrate, the potential safety hazard is easily generated, and the like are solved.

Description

Gas pipeline protection device based on air pressure

Technical Field

The invention belongs to the technical field of energy supply, and particularly relates to a gas pipeline protection device based on air pressure.

Background

With the development of scientific technology and the improvement of living standard of people, the problem of environmental pollution is increasingly serious, and because natural gas has the characteristics of no color, no smell, no toxicity and no corrosion, and the main component in the natural gas is methane, carbon dioxide and water are mainly generated after the natural gas is fully combusted, and no toxic gas or products with high pollution are generated, the natural gas is widely applied as clean energy in recent years.

The transportation of gas such as natural gas mainly adopts long distance high pressure to carry, when supplying with town user and using, at first need reduce pressure to it through the relief pressure valve, then supply to town dweller through the natural gas after the decompression, but in the process that the gas is changed into the low pressure at high pressure, the gas will absorb heat and make the temperature of self reduce, but the water dew point of gas will separate out moisture and form hydrate when higher, lead to the pipeline to block up, this problem is solved through heating to the pipeline to the time of using always at present, but when heating to the pipeline, the hydrate in the pipeline will become gaseous again, or gaseous gas absorbs heat and expands, at this moment the volume change of gas is great, make local atmospheric pressure sharply increase in low-pressure pipe department, and then the incident appears easily.

To this end, we propose a gas pipeline protection device based on gas pressure to solve the above problems.

Disclosure of Invention

The invention aims to solve the problems and provides a gas pipeline protection device based on air pressure.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a gas pipeline protection device based on atmospheric pressure, includes high pressure gas-supply pipe, relief pressure valve, low pressure gas-supply pipe that connect gradually and sets up the heating mechanism on the low pressure gas-supply pipe and constitute, heating mechanism comprises a plurality of heating element, and adjacent set up through the connecting pipe intercommunication between the heating element, keep away from the heating element of relief pressure valve is connected with the circulating pump, the circulating pump is connected with water supply mechanism, is close to the heating element and the water supply mechanism intercommunication setting of relief pressure valve.

In foretell gas pipeline protection device based on atmospheric pressure, heating element comprises heat preservation casing and heating tube, heat preservation casing cover is established and fixed connection on the low pressure gas-supply pipe, the heating tube is spiral setting and axial cover and is established on the low pressure gas-supply pipe, heating tube and heat preservation casing fixed connection.

In foretell gas pipeline protection device based on atmospheric pressure, water supply mechanism comprises water supply casing, fixed sleeve, connecting rod and heating net, be equipped with the water supply chamber in the water supply casing, the fixed sleeve lateral wall is through a plurality of connecting rods and water supply chamber lateral wall fixed connection, the heating net sets up inside fixed sleeve.

In foretell gas pipeline protection device based on atmospheric pressure, be close to the heating element of relief pressure valve is connected with the outlet pipe and sets up through outlet pipe and water supply chamber intercommunication, keeps away from the heating element of relief pressure valve is connected with the inlet tube and sets up through inlet tube and circulating pump intercommunication, the circulating pump is connected with the pipe that absorbs water and sets up through the pipe that absorbs water and water supply chamber intercommunication.

In the above gas pipeline protection device based on air pressure, the communication position of the water outlet pipe and the water supply cavity is located at the bottom end of the side wall of the water supply cavity, and the communication position of the water outlet pipe and the water supply cavity is located below the heating net.

In the above gas pipeline protection device based on air pressure, the communication position of the water suction pipe and the water supply cavity is located below the water surface in the water supply cavity, and the communication position of the water suction pipe and the water supply cavity is located above the heating net.

In foretell gas pipeline protection device based on atmospheric pressure, be equipped with circulation mechanism in the fixed bolster, circulation mechanism comprises fixed strip, axis of rotation, drive shaft and turbine, fixed strip level and fixed connection are inside the fixed bolster, be equipped with the cavity in the fixed strip, the drive shaft level is rotated and is connected in the cavity, the axis of rotation is equipped with a plurality of and vertical setting, axis of rotation top and turbine fixed connection, the axis of rotation bottom runs through the cavity and rotates with the cavity roof and be connected, the axis of rotation is located fixedly connected with worm wheel in the cavity, the worm wheel is connected with the drive shaft meshing.

In foretell gas pipeline protection device based on atmospheric pressure, the drive shaft is the worm structure with the worm wheel junction, the drive shaft passes through the worm structure and is connected with the worm wheel meshing, water supply casing lateral wall fixedly connected with motor, drive shaft one end runs through fixed sleeve and water supply casing lateral wall and extends to external and motor output fixed connection.

The invention has the beneficial effects that: after heating through heating element to water, water will flow to heating mechanism under the effect of circulating pump in, and will with between the relief pressure valve distance from far away and near gradually realize heating the low pressure gas-supply pipe through each heating element, then the circulating water will flow again and heat to water in the heating element.

The following are included: the invention can perform gradual heating on the low-pressure gas transmission pipe, so that when hydrate in the low-pressure gas transmission pipe is gasified, the hydrate on one side far away from the pressure reducing valve is firstly gasified, and then the hydrate is gradually gasified along the direction close to the pressure reducing valve, thereby avoiding the situations that the pressure at the pressure reducing valve is instantly increased due to the first gasification of the hydrate close to the pressure reducing valve, the air leakage at the pipeline connection part is caused, and the like.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment 1 of a gas pipeline protection device based on gas pressure provided by the invention;

FIG. 2 is a schematic cross-sectional view of a water supply housing in embodiment 1 of the gas pipeline protection device based on gas pressure according to the present invention;

FIG. 3 is a schematic cross-sectional view of a water supply housing in embodiment 2 of the gas pipeline protection device based on gas pressure according to the present invention;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

In the figure: 1 high-pressure air pipe, 2 low-pressure air pipes, 3 heating mechanisms, 31 heating components, 311 heat preservation shells, 312 heating pipes, 32 water outlet pipes, 33 water inlet pipes, 4 connecting pipes, 5 circulating pumps, 51 water suction pipes, 6 water supply mechanisms, 61 water supply shells, 62 fixing sleeves, 63 connecting rods, 64 heating nets, 65 water supply cavities, 7 pressure reducing valves, 8 circulating mechanisms, 81 fixing strips, 82 rotating shafts, 83 driving shafts, 84 turbines, 85 worm gears, 86 cavities and 87 motors.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

Example 1

As shown in fig. 1-2, a gas pipeline protection device based on air pressure comprises a high-pressure gas pipe 1, a pressure reducing valve 9, a low-pressure gas pipe 2 and a heating mechanism 3 arranged on the low-pressure gas pipe 2, wherein the high-pressure gas pipe 1, the pressure reducing valve 9, the low-pressure gas pipe 2 and the heating mechanism 3 are connected in sequence, the heating mechanism 3 is composed of a plurality of heating assemblies 31, and the adjacent heating assemblies 31 are communicated through a connecting pipe 4.

The heating assembly 31 is composed of a heat preservation shell 311 and a heating pipe 312, the heat preservation shell 311 is sleeved and fixedly connected to the low-pressure gas pipe 2, the heating pipe 312 is spirally arranged and axially sleeved on the low-pressure gas pipe 2, and the heating pipe 312 is fixedly connected with the heat preservation shell 311.

The heat-insulating housing 311 is made of a material with good heat insulating properties such as foam, and hot water flows in the reheating pipe 312 to heat the low-pressure gas pipe 2.

Keep away from heating element 31 of relief pressure valve 9 and be connected with circulating

pump

5, 5 models of circulating pump can be for 25SLK, circulating pump 5 is connected with water supply mechanism 6, water supply mechanism 6 is by water supply casing 61, fixed sleeve 62, connecting rod 63 and heating net 64 are constituteed, heating net 64 realizes the heating to water through resistance heating's mode, be equipped with water supply chamber 65 in the water supply casing 61, the fixed sleeve 62 lateral wall is through a plurality of connecting rods 63 and water supply chamber 65 lateral wall fixed connection, heating net 64 sets up inside fixed sleeve 62, the flowing condition of water in water supply chamber 65 is shown in fig. 2.

Heating element 31 that is close to relief pressure valve 9 is connected with outlet pipe 32 and sets up with supplying water chamber 65 intercommunication through outlet pipe 32, and heating element 31 connection that keeps away from relief pressure valve 9 is connected with inlet tube 33 and sets up with circulating pump 5 intercommunication through inlet tube 33, and circulating pump 5 is connected with and absorbs water tub 51 and sets up with supplying water chamber 65 intercommunication through absorbing water tub 51.

The place where the water outlet pipe 32 is communicated with the water supply cavity 65 is located at the bottom end of the side wall of the water supply cavity 65, and the place where the water outlet pipe 32 is communicated with the water supply cavity 65 is located below the heating net 64.

The place where the water suction pipe 51 communicates with the water supply cavity 65 is located below the water level in the water supply cavity 65, and the place where the water suction pipe 51 communicates with the water supply cavity 65 is located above the heating net 64.

The operating principle of the present invention will now be described as follows:

in the invention, firstly, the circulating pump 5 sucks water in the water supply cavity 65 through the water suction pipe 51, then the water is supplied to the heating component 31 far away from the pressure reducing valve 9 through the water inlet pipe 33, hot water flows in the heating component 31 far away from the pressure reducing valve 9, heat is continuously transferred to the low-pressure air delivery pipe 2 in the process, the temperature of the water is further reduced, then the water enters the adjacent heating component 31 through the connecting pipe 4 until finally enters the water supply cavity 65 through the water outlet pipe 32, and the flow of the water in the process is shown in figure 1.

Example 2

As shown in fig. 3 to 4, the present embodiment is different from embodiment 1 in that: be equipped with circulation mechanism 8 in the fixed sleeve 62, circulation mechanism 8 is by fixed strip 81, axis of rotation 82, drive shaft 83 and turbine 84 are constituteed, fixed strip 81 level and fixed connection are inside fixed sleeve 62, be equipped with cavity 86 in the fixed strip 81, drive shaft 83 level is rotated and is connected in cavity 86, axis of rotation 82 is equipped with a plurality of and vertical setting, axis of rotation 82 top and turbine 84 fixed connection, axis of rotation 82 bottom is run through cavity 86 and is connected with cavity 86 roof rotation, axis of rotation 82 is located cavity 86 internal fixedly connected with worm wheel 85, worm wheel 85 is connected with drive shaft 83 meshing.

The joint of the driving shaft 83 and the worm wheel 85 is a worm structure, the driving shaft 83 is meshed with the worm wheel 85 through the worm structure, the outer side wall of the water supply shell 61 is fixedly connected with a motor 87, and one end of the driving shaft 83 penetrates through the fixing sleeve 62 and the side wall of the water supply shell 61 and extends to the outside to be fixedly connected with the output end of the motor 87.

The during operation of motor 87 will drive shaft 83 and rotate, drive shaft 83 rotates and will drive the worm wheel 85 that is connected with it meshing and rotate, worm wheel 85 rotates and will drive fixed connection's axis of rotation 82 with it and rotate, then realize that axis of rotation 82 will drive turbine 84 and rotate, and then turbine 84 will accelerate the speed that the rivers in the water supply casing 61 flow, then realize that temperature distribution is comparatively even everywhere in the water supply casing 61, and then avoid appearing the temperature that local temperature degree is obviously higher than the detection in the water supply casing 61, lead to the condition such as atmospheric pressure that will make among the low pressure raceway 2 when too high temperature water participates in the circulation and increase rapidly to take place, lead to the gas pipeline condition such as the leakage to take place.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a gas pipeline protection device based on atmospheric pressure, includes high pressure gas-supply pipe (1), relief pressure valve (9), low pressure gas-supply pipe (2) that connect gradually and sets up heating mechanism (3) on low pressure gas-supply pipe (2) and constitute, its characterized in that, heating mechanism (3) comprise a plurality of heating element (31), and are adjacent set up through connecting pipe (4) intercommunication between heating element (31), keep away from heating element (31) of relief pressure valve (9) are connected with circulating pump (5), circulating pump (5) are connected with water supply mechanism (6), are close to heating element (31) and water supply mechanism (6) intercommunication setting of relief pressure valve (9).

2. The gas pipeline protection device based on air pressure as claimed in claim 1, wherein the heating assembly (31) is composed of a heat preservation shell (311) and a heating pipe (312), the heat preservation shell (311) is sleeved and fixedly connected to the low-pressure gas pipe (2), the heating pipe (312) is spirally arranged and axially sleeved on the low-pressure gas pipe (2), and the heating pipe (312) is fixedly connected with the heat preservation shell (311).

3. The gas pipeline protection device based on gas pressure as claimed in claim 2, wherein the water supply mechanism (6) is composed of a water supply housing (61), a fixed sleeve (62), a connecting rod (63) and a heating net (64), a water supply cavity (65) is arranged in the water supply housing (61), the outer side wall of the fixed sleeve (62) is fixedly connected with the side wall of the water supply cavity (65) through a plurality of connecting rods (63), and the heating net (64) is arranged inside the fixed sleeve (62).

4. The gas pipeline protection device based on gas pressure as claimed in claim 3, wherein the heating component (31) close to the pressure reducing valve (9) is connected with a water outlet pipe (32) and is communicated with the water supply cavity (65) through the water outlet pipe (32), the heating component (31) far away from the pressure reducing valve (9) is connected with a water inlet pipe (33) and is communicated with the circulating pump (5) through the water inlet pipe (33), and the circulating pump (5) is connected with a water suction pipe (51) and is communicated with the water supply cavity (65) through the water suction pipe (51).

5. The gas pressure-based gas pipeline protection device according to claim 4, wherein the communication position of the water outlet pipe (32) and the water supply cavity (65) is located at the bottom end of the side wall of the water supply cavity (65), and the communication position of the water outlet pipe (32) and the water supply cavity (65) is located below the heating net (64).

6. A gas pipeline protection device based on air pressure as claimed in claim 4, wherein the place where the water suction pipe (51) is communicated with the water supply cavity (65) is located below the water surface in the water supply cavity (65), and the place where the water suction pipe (51) is communicated with the water supply cavity (65) is located above the heating net (64).

7. The gas pipeline protection device based on gas pressure as claimed in claim 3, wherein a circulation mechanism (8) is arranged in the fixing sleeve (62), the circulation mechanism (8) is composed of a fixing strip (81), a rotating shaft (82), a driving shaft (83) and a turbine (84), the fixing strip (81) is horizontally and fixedly connected inside the fixing sleeve (62), a cavity (86) is arranged in the fixing strip (81), the driving shaft (83) is horizontally and rotatably connected in the cavity (86), the rotating shaft (82) is provided with a plurality of vertical arrangements, the top end of the rotating shaft (82) is fixedly connected with the turbine (84), the bottom end of the rotating shaft (82) penetrates through the cavity (86) and is rotatably connected with the top wall of the cavity (86), the rotating shaft (82) is positioned in the cavity (86) and is fixedly connected with the turbine (85), the worm wheel (85) is meshed with the driving shaft (83).

8. The gas pipeline protection device based on gas pressure as claimed in claim 7, wherein the connection between the driving shaft (83) and the worm wheel (85) is a worm structure, the driving shaft (83) is engaged with the worm wheel (85) through the worm structure, the outer side wall of the water supply housing (61) is fixedly connected with the motor (87), and one end of the driving shaft (83) penetrates through the fixing sleeve (62) and the side wall of the water supply housing (61) and extends to the outside to be fixedly connected with the output end of the motor (87).