CN213810047U - Pipeline diffusing device for natural gas station - Google Patents

Abstract

The utility model provides a pipeline diffusing device for natural gas station, the diffusing tower body is two segmentation structures, is thick down in proper order from bottom to top down awl body and last barrel, diffuses the inner chamber that takes over the setting on lower cone lateral wall and with awl body down and switch on, the upper end opening diameter of lower cone and the diameter phase-match of last barrel, and the diameter of going up the barrel is greater than the diameter of diffusing the takeover. The diffusing tower body of the pipeline diffusing device adopts a two-section structure comprising a lower cone and an upper barrel from bottom to top, and the height of the lower cone or the diameter of the lower end of the lower cone can be increased on the premise of ensuring that the pipe diameter of the upper section structure meets the diffusing requirement; in addition, the baffling sheet is arranged on the outer side of the upper barrel, so that the wind load transmitted to the diffusing tower body can be weakened better, the overall structure of the diffusing device is stable, and the anti-seismic effect is good.

Description

Pipeline diffusing device for natural gas station

Technical Field

The utility model relates to a natural gas line carries technical field, concretely relates to pipeline diffusing device for natural gas station.

Background

Independent diffusing devices are required to be arranged at each station of a natural gas conveying pipeline, and a diffusing vertical pipe is usually adopted so that a large amount of natural gas can be safely released in a short time under the conditions of pipeline overpressure, overhaul and accident. One of the functions of the diffusing vertical pipe is to prevent the pipe explosion accident of the gas transmission pipeline caused by overpressure operation; secondly, the discharge amount of natural gas at the accident position is reduced after the pipeline leaks, and the accident consequence is reduced; and thirdly, the daily maintenance requirements of the pipeline station are met through the emptying pipeline, and meanwhile, the normal work of other stations is not influenced, so that the natural gas diffusing system is an important safety facility of the conveying pipeline.

Most of the currently used diffusing vertical pipes are vertically arranged by adopting a single pipeline, and the caliber of a discharge port of each diffusing vertical pipe cannot be too large than that of each diffusing connecting pipe, so that the diameter of each diffusing vertical pipe is smaller, the length of each diffusing vertical pipe is high, the height of each diffusing vertical pipe is usually 6-10 meters, some diffusing vertical pipes can reach more than 10 meters, and the length of each diffusing vertical pipe is larger. Under the action of wind load, the top of the diffusing vertical pipe swings in the wind when the critical wind speed is reached, which is about 10 meters higher than the ground generally. Although the calculated strength stability can be satisfactory, the resonance can cause fatigue cracks at the weld joint of the bleeding riser, particularly at the weld joint between the bottom of the bleeding riser and the base plate.

Through published patent searches, the following comparison documents were found:

a natural gas station blow-off tower (CN202756915U) discloses a natural gas station blow-off tower. The diffusing pipe is connected with the diffusing header pipe through the diffusing valve, the horn pipe is installed at the pipe orifice of the diffusing header pipe, two diffusing openings of the horn pipe are downward, a diffusing water tank is respectively arranged below the two diffusing openings of the horn pipe, a blow-off pipe is arranged in the diffusing water tank, and the blow-off pipe is connected with the diffusing pipe through a three-way pipe. The utility model has the following characteristics: 1. the adopted ox horn pipe can effectively prevent sundries such as rainwater and the like from entering the diffusing pipe, keeps the interior of the diffusing pipe clean, and simultaneously intercepts most of the diffusing substances containing the impurities passing through the ox horn pipe in a standing area, is convenient to treat and reduces the pollution to farmland vegetable fields; 2. the filtering link is added when the waste is diffused to the water pool, the waste is prevented from diffusing to the periphery due to the original extensive diffusion, the damage to the peripheral farmland can be effectively reduced, and meanwhile, the diffused waste can be collected in a centralized manner, so that the environmental pollution is reduced; 3. the water in the pool can also play a role in blocking a fire source.

Through analysis, the technical scheme and the realization function of the patent are different from those of the application, so that the novelty of the application is not influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a pipeline diffusing device for a natural gas station, wherein a diffusing tower body of the pipeline diffusing device adopts a two-section structure which is a lower cone and an upper barrel from bottom to top, and the height of the lower cone or the diameter of the lower end of the lower cone can be increased on the premise of ensuring that the pipe diameter of the upper section structure meets the diffusing requirement; in addition, the baffling sheet is arranged on the outer side of the upper barrel, so that the wind load transmitted to the diffusing tower body can be weakened better, the overall structure of the diffusing device is stable, and the anti-seismic effect is good.

The utility model provides a pipeline diffusing device for natural gas station, it sets up on concrete structure basis, and through rag bolt and structure basis fixed connection, pipeline diffusing device is including the diffusing tower body, diffusing takeover and bottom plate, the upper end opening of diffusing tower body, the lower extreme sets up on the bottom plate, diffusing takeover sets up on diffusing tower body lateral wall, diffusing tower body is two segmentation structures, be thick down in proper order from bottom to top down thin lower cone and last barrel, diffusing takeover sets up on lower cone lateral wall and switches on with the inner chamber of lower cone, the upper end opening diameter of lower cone and the diameter phase-match of last barrel, and the diameter of going up the barrel is greater than diffusing takeover's diameter.

And a plurality of rib plates are arranged on the bottom plate along the circumferential direction of the lower end of the lower cone, a cover plate is arranged above the rib plates, the cover plate is sleeved on the lower cone and is fixedly connected with the lower cone, three edges of each rib plate are respectively fixedly connected with the bottom plate, the lower cone and the cover plate, and foundation bolts respectively penetrate through the bottom plate and the cover plate to fix the pipeline diffusing device on a structural foundation.

And, the apron is the annular equipartition and has been laid and is no less than 6 fixed orificess, and the bottom plate is equipped with along its circumference edge equipartition and is no less than 6U type holes, and the bottom in every U type hole is semicircle orifice structure, every fixed orifices and every U type hole one-to-one, and the center of every fixed orifices and the vertical coincidence of the centre of a circle in the bottom semicircle orifice in its corresponding U type hole.

Preferably, the number of the fixing holes and the U-shaped holes is 12.

And the bottom plate and the cover plate are both of annular plate structures, the inner ring diameter of the bottom plate is smaller than the inner diameter of the bottom of the lower cone, the inner ring diameter of the cover plate is matched with the outer diameter of the lower cone at the corresponding position, and the outer diameter of the cover plate is consistent with the outer diameter of the bottom plate.

The number of the foundation bolts is consistent with that of the fixing holes or the U-shaped holes, the number of the rib plates is consistent with that of the foundation bolts, and each rib plate is arranged between two adjacent fixing holes or U-shaped holes;

the rib plate is of a semi-trapezoidal structure with a straight edge and a wide upper part and a narrow lower part, the upper end of the rib plate is consistent with the width of the cover plate, the lower end of the rib plate is consistent with the width of the bottom plate outside the lower cone, and the bevel edge of the rib plate is attached to the outer wall of the lower cone.

In addition, the side wall of the lower cone is also provided with a hand hole, and the hand hole is communicated with the inner cavity of the lower cone; still be equipped with a baffle in the lower cone, two chambeies about the baffle will be cut apart into to the lower cone, are equipped with a blowdown hole on the baffle, and the below of baffle is equipped with a blow off pipe, and the one end and the blowdown hole intercommunication of blow off pipe, the other end are bent the back and are stretched out from lower cone lateral wall, and the hand hole is located the blow off pipe top that stretches out from lower cone lateral wall.

Moreover, the diffusing connecting pipe, the blow-off pipe and the hand hole are arranged along the vertical dislocation of the side wall of the lower cone body.

And, be equipped with the baffling piece that the spiral upwards encircles the setting on the lateral wall of going up the barrel, the spiral angle of encircleing of baffling piece and horizontal plane is 30 ~ 60.

Preferably, the helical angle of the baffle with respect to the horizontal plane is 45 °.

Moreover, the number of the baffle plates is 3, the 3 baffle plates are arranged in a staggered mode by 180 degrees, and the spiral surrounding directions of the 3 baffle plates are consistent.

Furthermore, the baffle plate is arranged at the position of one half height of the upper part of the upper cylinder; the width of the baffle sheet extending out of the outer side wall of the upper cylinder body is 30-60 mm.

Moreover, the ratio of the diameter of the lower end opening of the lower cone to the diameter of the upper end opening of the lower cone is 3: 1-5: 3, and the length ratio of the lower cone to the upper cylinder is 1: 1-1: 2;

and moreover, the outer sides of the diffusing connecting pipe and the hand hole are also provided with reinforcing rings, the outer edges of the reinforcing rings are fixedly connected with the lower cone, and the inner rings of the reinforcing rings are respectively fixedly connected with the diffusing connecting pipe and the hand hole.

The utility model discloses a pipeline diffusing device for natural gas station, its concrete advantage and technological effect are as follows:

A. the utility model discloses a pipeline diffusing device for natural gas station, the diffusing tower body is two segmentation structures, is thick down to go up thin lower cone and last barrel from bottom to top in proper order, and setting up of cone structure has improved diffusing device's stability, can increase down the height of cone or the lower end diameter of cone under guaranteeing that upper segment structure pipe diameter satisfies the prerequisite of diffusing the requirement, and then increase diffusing device's anti-wind performance.

B. The utility model discloses a pipeline diffusing device for natural gas station is equipped with a plurality of gussets along cone lower extreme circumference on the bottom plate, be equipped with the apron in the top of gusset, trilateral and bottom plate, lower cone and apron fixed connection of every gusset respectively, constitute gusset reinforcing integrated configuration jointly, will shake the stress dispersion of load lower plate and first barrel junction to gusset reinforcing integrated configuration, make diffusing device overall structure stable, effectively reduce the fatigue crack of diffusing device bottom and bottom plate welding department, the antidetonation is effectual.

C. The utility model discloses a pipeline diffuses device for natural gas station, edge equipartition at the bottom plate sets up U type hole, rather than along the circumference round hole of strideing the well setting on the apron, this kind of mode of setting has reduced the constraint to the rag bolt who wears into in the U type hole, when concrete structure basis makes the rag bolt displacement of setting in concrete structure basis when taking place the fine setting owing to external environment temperature variation influence (such as expend with heat and contract with cold etc.), can make rag bolt furthest release stress, can not produce great stress owing to the constraint restriction rag bolt displacement of fixed orifices, and then avoid taking place rag bolt cracked risk.

D. The utility model discloses a pipeline diffusing device for natural gas station is perpendicular ground installation, and in rainy area, the rainwater can be followed and diffused in the tower body upper end mouth of pipe gets into the tower body, probably causes the rainwater to gather and can flow in even diffusing the takeover, will arouse the corruption of diffusing the system. The utility model discloses set up a baffle in the cone down to establish a drain hole on the baffle, the below of baffle is equipped with a blow off pipe, the one end and the drain hole intercommunication of blow off pipe, stretch out from cone lateral wall down after the other end is bent, can be effectively with from diffusing tower body top entering into the interior ponding such as rainwater of diffusing tower outside the blow off pipe discharges diffusing tower. The setting mode has simple structure, convenient operation and low cost.

E. The utility model discloses a pipeline diffuses device for natural gas station still is equipped with a hand hole on the cone lateral wall down to in take out the inside debris such as leaf, the sand blown by the wind that gather of diffusing tower body, do benefit to the bottom blowdown.

F. In order to improve the height of diffusing the riser, people set up the acting as a rope like bridge cable system near the upper end of diffusing the riser usually, but this kind sets up mode area great, the utility model discloses set up the baffling piece in the last barrel outside, can cancel the acting as a rope of former diffusing the riser, reduce a large amount of areas, practice thrift the investment, ensure diffusing device safety and stability work, can weaken the wind load that transmits on the diffusing tower body betterly, further improve diffusing device's anti-wind effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the pipeline diffusing device for the natural gas station of the present invention;

FIG. 2 is a view of the structure of FIG. 1 from direction A-A;

FIG. 3 is a schematic view of the structure of the middle sole plate of the present invention;

fig. 4 is the schematic diagram of the middle rib plate structure of the present invention.

In the figure: 1-a diffusing tower body, 11-a lower cone and 12-an upper cylinder; 2-diffusing the connecting pipe; 3-partition board, 31-sewage outlet; 4-hand hole; 5-a sewage draining pipe; 6-rib plate; 7-bottom plate, 71-U-shaped hole; 8-cover plate, 81-fixing hole; 9-a baffling sheet; 10-a structural foundation; 20-foundation bolts; 30-reinforcing ring.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.

As shown in fig. 1, fig. 2, the utility model provides a pipeline diffusing device for natural gas station, it sets up on concrete structure basis 10, and through rag bolt 20 and structure basis 10 fixed connection, pipeline diffusing device is including diffusing tower body 1, diffuse takeover 2 and bottom plate 7, diffuse tower body 1's upper end opening, the lower extreme sets up on bottom plate 7, diffuse takeover 2 sets up on diffusing tower body 1 lateral wall, diffuse tower body 1 is two segmentation structures, be thick lower cone 11 and last barrel 12 down thin in proper order from bottom to top, diffuse takeover 2 sets up on lower cone 11 lateral wall and switches on with the inner chamber of lower cone 11, the upper end opening diameter of lower cone 11 and the diameter phase-match of last barrel 12, and the diameter of last barrel 12 is greater than the diameter of diffusing takeover 2. A plurality of rib plates 6 are circumferentially arranged on the bottom plate 7 along the lower end of the lower cone 11, a cover plate 8 is arranged above the rib plates 6, the cover plate 8 is sleeved on the lower cone 11 and is fixedly connected with the lower cone 11, three edges of each rib plate 6 are fixedly connected with the bottom plate 7, the lower cone 11 and the cover plate 8 respectively, and foundation bolts 20 penetrate through the bottom plate 7 and the cover plate 8 respectively to fix the pipeline diffusing device on the structure foundation 10. The utility model discloses the tower body of diffusing in the structure is two segmentation structures, is thick down to go up thin lower cone and last barrel from bottom to top in proper order, and setting up of cone structure has improved the stability of diffusing the device, can increase down the height of cone or the lower end diameter of cone under guaranteeing that upper segment structure pipe diameter satisfies the prerequisite of diffusing the requirement, and then increases the anti-wind performance of diffusing the device. Additionally, the utility model discloses be equipped with a plurality of gussets along cone lower extreme circumference on the bottom plate, be equipped with the apron in the top of gusset, trilateral and bottom plate, lower cone and the apron fixed connection of every gusset respectively constitute gusset reinforcing integrated configuration jointly, will shake the stress dispersion of load lower plate and first barrel junction to gusset reinforcing integrated configuration for diffusing device overall structure is stable, effectively reduces the fatigue crack of diffusing device bottom and bottom plate welding department, and it is effectual to combat earthquake.

Further, as shown in fig. 2 and 3, 12 fixing holes 81 are uniformly distributed in the cover plate 8 along the circumferential span thereof, 12U-shaped holes 71 are uniformly distributed in the bottom plate 7 along the circumferential edge thereof, the bottom of each U-shaped hole 71 is of a semicircular hole structure, each fixing hole 81 corresponds to each U-shaped hole 71 one by one, and the center of each fixing hole 81 vertically coincides with the center of the semicircular hole at the bottom of the corresponding U-shaped hole 71. The bottom plate 7 and the cover plate 8 are both of annular plate structures, the inner ring diameter of the bottom plate 7 is smaller than the inner diameter of the bottom of the lower cone 11, the bottom plate 7 can further release stress at a corner welding seam when the bottom plate is connected with the lower cone in a welding mode, and fatigue resistance is further improved. The inner ring diameter of the cover plate 8 is matched with the outer diameter of the lower cone 11 at the corresponding position, and the outer diameter of the cover plate 8 is consistent with that of the bottom plate 7. The utility model discloses in the edge equipartition at the bottom plate sets up U type hole, rather than the circular port that sets up like the apron is gone up along circumference and is striden, this kind of mode of setting has reduced the constraint to the rag bolt who pierces into in the U type hole, when concrete structure basis makes the rag bolt displacement of setting in concrete structure basis take place the fine setting because external environment temperature variation influences (such as expend with heat and contract with cold etc.), can make rag bolt furthest release stress, can not produce great stress because the constraint restriction rag bolt displacement of fixed orifices, and then avoid taking place rag bolt cracked risk. In addition, the bottom plate 7 is an annular plate structure with a circular hole in the center, when the external environment temperature changes greatly and the concrete structure foundation generates a large temperature difference, the bottom plate cannot tilt due to expansion with heat and contraction with cold, and the annular bottom plate can release stress to the maximum extent.

The number of the foundation bolts 20 is 12, the number of the foundation bolts is 35CrMoA, the number of the rib plates 6 is 12, and the number of the rib plates 6 is 12, wherein the number of the rib plates 6 is equal to the number of the foundation bolts 20, and each rib plate 6 is respectively arranged between two adjacent fixing holes 81 or U-shaped holes 71.

As shown in fig. 1 and 4, the rib plate 6 is a half-trapezoidal structure with a straight edge and a wide upper part and a narrow lower part, the upper end of the rib plate is consistent with the width of the cover plate 8, the lower end of the rib plate is consistent with the width of the bottom plate 7 outside the lower cone 11, and the inclined edge of the rib plate 6 is attached to the outer wall of the lower cone 11.

The utility model discloses a pipeline diffusing device for natural gas station is perpendicular ground installation, and in rainy area, the rainwater can be followed and diffused in the tower body upper end mouth of pipe gets into the tower body, probably causes the rainwater to gather and can flow in even diffusing the takeover, will arouse the corruption of diffusing the system. As shown in fig. 1, the utility model discloses set up a baffle 3 in cone 11 down to establish a blowoff hole 31 on baffle 3, the below of baffle 3 is equipped with a blow off pipe 5, and the one end and the blowoff hole 31 intercommunication of blow off pipe 5, the other end are bent the back and are stretched out from cone 11 lateral wall down, can be effectively with from diffusing that the tower body 1 top enters into the ponding such as rainwater in the tower body 1 of diffusing and discharge outside the tower body 1 from blow off pipe 5 discharges.

Still be equipped with a hand hole 4 on the 11 lateral walls of first barrel, hand hole 4 is located blow off 5 tops and switches on with the cavity of first barrel 11 to in taking out debris such as the inside leaf that gathers of tower body, sand blown by the wind, do benefit to the bottom blowdown. The diffusing connecting pipe 2, the sewage discharge pipe 5 and the hand hole 4 are arranged along the first barrel body 11 in a vertical staggered manner. Still be equipped with a hand hole 4 on the 11 lateral walls of lower cone, hand hole 4 is located the blow off pipe 5 top that stretches out from 11 lateral walls of lower cone, and hand hole 4 switches on with the inner chamber of lower cone 11 to be convenient for take out the inside debris such as leaf, the sand blown by the wind that gather of tower body, do benefit to the bottom blowdown. The diffusing connecting pipe 2, the sewage discharge pipe 5 and the hand hole 4 are arranged along the side wall of the lower cone 11 in a vertical staggered manner.

As shown in fig. 1, the utility model discloses in be equipped with the spiral on the lateral wall of last barrel 12 and upwards encircle baffling piece 9 that sets up, baffling piece 9 encircles the angle with the spiral of horizontal plane and is 30 ~ 60, selects 45 in this embodiment. The number of baffling piece 9 is 3, 3 baffling pieces 9 stagger 180 settings each other, and 3 baffling pieces 9's spiral circumferencial direction is unanimous. The baffling sheet 9 is arranged at the position of one half height of the upper part of the upper cylinder 12; one side edge of the baffling sheet 9 is welded with the outer side wall of the upper cylinder 12, the other side edge extends out of the upper cylinder 12, and the width extending out of the outer side wall of the upper cylinder 12 is 30-60mm, preferably 40 mm. In order to improve the height of diffusing the riser, people set up the acting as a rope like bridge cable system near the upper end of diffusing the riser usually, but this kind sets up mode area great, the utility model discloses set up the baffling piece in the last barrel outside, can cancel the acting as a rope of former diffusing the riser, reduce a large amount of areas, practice thrift the investment, ensure diffusing device safety and stability work, can weaken the wind load that transmits on the diffusing tower body betterly, further improve diffusing device's anti-wind effect.

The ratio of the diameter of the lower end opening of the lower cone 11 to the diameter of the upper end opening is 3: 1-5: 3, and the length ratio of the lower cone 11 to the upper cylinder 12 is 1: 1-1: 2.

In addition, the outer sides of the diffusing connecting pipe 2 and the hand hole 4 are also provided with a reinforcing ring 30, the outer edge of the reinforcing ring 30 is fixedly connected with the lower cone 11 in a welding mode, and the inner ring of the reinforcing ring 30 is fixedly connected with the diffusing connecting pipe 2 and the hand hole 4 in a welding mode respectively. According to actual needs, can set up two on the lower cone 11 and diffuse takeover 2, two diffuse takeover 2 stagger the setting from top to bottom along the circumference of lower cone 11.

The utility model discloses do not state the part and be applicable to prior art.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims (10)

1. The utility model provides a pipeline diffusing device for natural gas station, its sets up on concrete structure basis (10) to through rag bolt (20) with structure basis (10) fixed connection, pipeline diffusing device is including diffusing tower body (1), diffusing takeover (2) and bottom plate (7), the upper end opening of diffusing tower body (1), the lower extreme sets up on bottom plate (7), diffusing takeover (2) sets up on diffusing tower body (1) lateral wall, its characterized in that: the diffusing tower body (1) is of a two-section structure, and is a lower cone (11) and an upper cylinder (12) which are thick and thin from bottom to top in sequence, the diffusing connecting pipe (2) is arranged on the side wall of the lower cone (11) and communicated with the inner cavity of the lower cone (11), the upper end opening diameter of the lower cone (11) is matched with the diameter of the upper cylinder (12), and the diameter of the upper cylinder (12) is larger than that of the diffusing connecting pipe (2).

2. The pipe diffusing device for a natural gas station according to claim 1, wherein: follow on bottom plate (7) lower cone (11) lower extreme circumference is equipped with a plurality of gusset (6) the top of gusset (6) is equipped with apron (8), apron (8) suit is in down on cone (11), and with fixed connection between lower cone (11), every the trilateral of gusset (6) respectively with bottom plate (7) down cone (11) with apron (8) fixed connection, rag bolt (20) pass respectively bottom plate (7) with apron (8) will pipeline diffuses the device and fix on structure basis (10).

3. The pipe diffusing device for a natural gas station according to claim 2, wherein: be that the annular equipartition has laid on apron (8) and be no less than 6 fixed orificess (81), bottom plate (7) are equipped with along its circumference edge equipartition and are no less than 6U type hole (71), every the bottom of U type hole (71) is semicircle orifice structure, every fixed orificess (81) and every U type hole (71) one-to-one, and every the center of fixed orificess (81) rather than corresponding the vertical coincidence in the centre of a circle of the bottom semicircle orifice of U type hole (71).

4. The pipe diffusing device for a natural gas station according to claim 2, wherein: the bottom plate (7) and the cover plate (8) are both of annular plate structures, the inner ring diameter of the bottom plate (7) is smaller than the inner diameter of the bottom of the lower cone (11), the inner ring diameter of the cover plate (8) is matched with the outer diameter of the lower cone (11) at the corresponding position, and the outer diameter of the cover plate (8) is consistent with the outer diameter of the bottom plate (7).

5. The pipe diffusing device for a natural gas station according to claim 4, wherein: the number of the foundation bolts (20) is consistent with that of the fixing holes (81) or the U-shaped holes (71), the number of the rib plates (6) is consistent with that of the foundation bolts (20), and each rib plate (6) is arranged between two adjacent fixing holes (81) or U-shaped holes (71);

the rib plate (6) is of a half-trapezoidal structure with a straight edge and a wide upper part and a narrow lower part, the upper end of the rib plate is consistent with the width of the cover plate (8), the lower end of the rib plate is consistent with the width of the bottom plate (7) outside the lower cone (11), and the inclined edge of the rib plate (6) is attached to the outer wall of the lower cone (11).

6. The pipe diffusing device for a natural gas station according to claim 1, wherein: a hand hole (4) is further formed in the side wall of the lower cone (11), and the hand hole (4) is communicated with the inner cavity of the lower cone (11); a partition plate (3) is further arranged in the lower cone (11), the lower cone (11) is divided into an upper cavity and a lower cavity by the partition plate (3), a sewage discharge hole (31) is formed in the partition plate (3), a sewage discharge pipe (5) is arranged below the partition plate (3), one end of the sewage discharge pipe (5) is communicated with the sewage discharge hole (31), the other end of the sewage discharge pipe extends out of the side wall of the lower cone (11) after being bent, and the hand hole (4) is located above the sewage discharge pipe (5) extending out of the side wall of the lower cone (11);

the diffusing connecting pipe (2), the sewage draining pipe (5) and the hand hole (4) are arranged along the side wall of the lower cone (11) in a vertical staggered manner.

7. The pipe diffusing device for a natural gas station according to any one of claims 1 to 6, wherein: the outer side wall of the upper cylinder body (12) is provided with baffle pieces (9) which are spirally and upwardly arranged in a surrounding mode, and the spiral surrounding angle between the baffle pieces (9) and the horizontal plane is 30-60 degrees.

8. The pipe diffusing device for a natural gas station according to claim 7, wherein: the number of the baffling sheets (9) is 3, 3 the baffling sheets (9) are staggered by 180 degrees, and the spiral surrounding directions of the baffling sheets (9) are consistent.

9. The pipe diffusing device for a natural gas station of claim 8, wherein: the baffling sheet (9) is arranged at the position of one half height of the upper part of the upper cylinder body (12); the width of the baffle plate (9) extending out of the outer side wall of the upper cylinder body (12) is 30-60 mm.

10. The pipe diffusing device for a natural gas station according to claim 6, wherein: the ratio of the diameter of the lower end opening of the lower cone (11) to the diameter of the upper end opening of the lower cone (11) is 3: 1-5: 3, and the length ratio of the lower cone (11) to the upper cylinder (12) is 1: 1-1: 2;

the outer side of the diffusing connecting pipe (2) and the outer side of the hand hole (4) are further provided with reinforcing rings (30), the outer edges of the reinforcing rings (30) are fixedly connected with the lower cone (11), and the inner rings of the reinforcing rings (30) are fixedly connected with the diffusing connecting pipe (2) and the hand hole (4) respectively.

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