Drainage structure of buried heat preservation steam pipe

Abstract

The utility model discloses a drainage structure of a buried heat preservation steam pipe. The drainage structure comprises a buried steam core pipe, a steam leading-out core pipe, a three-way pipe and a drainage pipe. The steam leading-out end of the buried steam core pipe is communicated with the steam leading-in end of the steam leading-out core pipe through a two-way pipe in the three-way pipe; the buried steam core pipe is horizontally buried underground, and the leading-out end of the steam leading-out core pipe is led out upwards to the position above the ground. A third way of the three-way pipe is vertically downward, and the lower end of the third way is closed, so that an inner cavity of the third way forms a water storage bin; a lower end bypass of the drain pipe is connected with a water storage bin in the third way; the upper end of the drain pipe extends above the ground and is communicated with the atmospheric environment; and the purpose of stable dewatering is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of buried pipe. BACKGROUND

[0002] Condensate water is produced in the buried steam core pipe, and if the condensate water is not discharged in time, it will corrode the steam pipe and affect the heat exchange efficiency and steam quality, so a drainage device capable of stably discharging condensate water needs to be designed.

[0003] When designing the drainage structure, in addition to realizing the normal drainage function, it is also necessary to consider that high-flow steam flow with a large amount of high-temperature condensate water will be formed in the drainage pipe, so that a large amount of high-speed and high-temperature splashing jet is sprayed out of the end of the drainage pipe, not only forming strong noise, but also the high-flow splashing high-temperature condensate water may cause harm to nearby irrelevant personnel. SUMMARY

[0004] The utility model discloses a buried heat preservation steam pipe drainage structure, which achieves the purpose of stable drainage.

[0005] Technical scheme: in order to realize the above-mentioned purpose, the utility model discloses a buried heat preservation steam pipe drainage structure, which comprises a buried steam core pipe, a steam lead-out core pipe, a tee pipe and a drainage pipe.

[0006] The buried steam core pipe is horizontally buried below the ground, the lead-out end of the steam lead-out core pipe is led out upwards to above the ground, the third passage of the tee pipe is vertically downward, and the lower end of the third passage is closed, so that the inner cavity of the third passage forms a water storage warehouse, and the lower end of the drainage pipe is bypassed connected with the water storage warehouse in the third passage.

[0007] Further, the buried steam core pipe, the steam lead-out core pipe, the tee pipe and the drainage pipe are wrapped outside the outer sleeve heat preservation pipe below the ground.

[0008] Further, the drainage pipe is provided with a drainage valve.

[0009] Further, the upper end in the third passage of the tee pipe is provided with a steam jet inhibitor, and the steam jet inhibitor automatically inhibits the high-flow jet steam of the drainage pipe.

[0010] Further, the steam jet inhibitor comprises a sleeve ring fixedly sleeved on the upper end of the third through pipe, the upper and lower ends of the sleeve ring are integrally provided with an upper annular inner edge and a lower annular inner edge respectively, the inner circles of the upper annular inner edge and the lower annular inner edge are a condensed water inflow and a condensed water outflow respectively, a suspension disc is coaxially arranged between the upper annular inner edge and the lower annular inner edge, the lower side of the upper annular inner edge is suspendedly connected with the suspension disc through a coaxial spring, and the central part of the suspension disc is hollowed out to form a throttling hole.

[0011] Further, when the upper side of the suspension disc is impacted by a force, the suspension disc moves downward to cover the condensed water outflow under overcoming the pulling force of the spring.

[0012] Beneficial effects: when the hydrophobic valve on the hydrophobic pipe is opened, the remaining condensed water in the water storage chamber of the third through pipe is quickly discharged through the hydrophobic pipe under the steam pressure in the buried steam core pipe and the steam leading core pipe, so that the hydrophobic purpose is achieved.

[0013] When the hydrophobic valve on the hydrophobic pipe is not opened, the upper and lower sides of the suspension disc are balanced in air pressure, the condensed water in the three-way pipe flows downward from the condensed water inflow to the water storage chamber in the third through pipe of the three-way pipe under the action of gravity, and the condensed water flows downward from the condensed water outflow to the water storage chamber in the third through pipe of the three-way pipe, so that the normal water storage function is realized; when the hydrophobic valve on the hydrophobic pipe is not opened, the hydrophobic pipe is immediately connected with the atmospheric pressure, steam quickly surges downward from the condensed water inflow, so that the upper side of the suspension disc is impacted by the downward steam impact force, the suspension disc moves downward to cover the condensed water outflow under overcoming the pulling force of the spring, so that the function of blocking most steam is achieved, and the high-pressure steam in the three-way pipe can only surge downward into the third through pipe of the three-way pipe through the relatively narrow throttling hole, so that the purpose of significantly reducing the flow in the hydrophobic pipe is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole schematic view of the scheme;

[0015] Figure 2 It is a structure schematic view of the steam jet inhibitor. DETAILED DESCRIPTION

[0016] The utility model will be further explained in connection with the drawings.

[0017] As shown in the accompanying Figure 1 and 2The buried insulated steam pipe drain structure shown includes an buried steam core pipe 1, a steam outlet core pipe 6, a tee pipe 3 and a drain pipe 7; the steam outlet end of the buried steam core pipe 1 and the steam inlet end of the steam outlet core pipe 6 are interconnected through two connections in the tee pipe 3; the buried steam core pipe 1 is buried horizontally below the ground, and the outlet end of the steam outlet core pipe 6 is led upward to above the ground; the high-temperature steam in the buried steam core pipe 1 is introduced into the steam outlet core pipe 6 through the tee pipe 3, and the steam is led out of the ground through the steam outlet core pipe 6, so as to be used by gas users. The parts of the buried steam core pipe 1, the steam outlet core pipe 6, the tee pipe 3 and the drain pipe 7 below the ground are all wrapped outside the outer insulation pipe 2.

[0018] The third channel 4 of the tee pipe 3 is vertically downward, and the lower end of the third channel 4 is closed, so that the inner cavity of the third channel 4 forms a water storage tank, and the condensed water formed in the buried steam core pipe 1 and the steam outlet core pipe 6 will gradually accumulate in the third channel 4 in the tee pipe 3; the lower end of the drain pipe 7 is bypass-connected to the water storage tank in the third channel 4; the upper end of the drain pipe 7 extends above the ground and connects to the atmospheric environment; a drain valve, such as a ball valve, a solenoid valve, etc., is provided on the drain pipe 7. When the drain valve on the drain pipe 7 is opened, under the steam pressure in the buried steam core pipe 1 and the steam outlet core pipe 6, the condensed water remaining in the water storage tank in the third channel 4 will be quickly discharged through the drain pipe 7, thereby achieving the purpose of draining.

[0019] During the drainage process of the underground steam pipeline, due to the high internal pressure in the underground steam core tube 1, a high-flow steam airflow carrying a large amount of high-temperature condensate will be formed in the drain pipe 7 during the drainage operation, causing the drain pipe 7 to spray a large amount of high-speed and high-temperature splashing jets. This not only generates strong noise, but the high-flow splashing high-temperature condensate may also cause harm to nearby unrelated personnel, and also cause steam loss. Therefore, the following structure is designed:

[0020] A steam jet suppressor 5 is provided at the upper end of the third channel 4 of the tee pipe 3. The steam jet suppressor 5 automatically suppresses the high-flow steam jet from the drain pipe 7. Specifically, the steam jet suppressor 5 includes a ring 10 fixedly mounted on the upper end of the third channel 4. The upper and lower ends of the ring 10 are respectively integrated with an upper annular inner edge 11 and a lower annular inner edge 17. The inner circles of the upper annular inner edge 11 and the lower annular inner edge 17 are respectively a condensate inlet 12 and a condensate outlet 16. A suspension plate 14 is coaxially provided between the upper annular inner edge 11 and the lower annular inner edge 17. The lower side of the upper annular inner edge 11 is suspended and connected to the suspension plate 14 by a coaxial spring 13. A throttling hole 15 is hollowed out in the center of the suspension plate 14. The inner diameter of the throttling hole 15 is one tenth of the inner diameter of the third channel 4.

[0021] When the hydrophobic valve on the hydrophobic pipe 7 is not opened, the air pressure on the upper and lower sides of the suspension disc 14 is balanced, the condensed water in the three-way pipe 3 flows smoothly from the condensed water inlet 12 to the water storage room in the third passage 4 of the three-way pipe 3 under the action of gravity, and flows smoothly from the condensed water outlet 16, thereby realizing the normal water storage function; when the hydrophobic valve on the hydrophobic pipe 7 is not opened, the hydrophobic pipe 7 is immediately connected to the atmospheric pressure, and the steam will quickly surge downward from the condensed water inlet 12, thereby causing the upper side of the suspension disc 14 to be impacted by the downward steam, causing the suspension disc 14 to overcome the pulling force of the spring 13 and move downward to cover the condensed water outlet 16, thereby blocking most of the steam, and the high-pressure steam in the three-way pipe 3 can only flow into the third passage 4 of the three-way pipe 3 through the relatively narrow throttling hole 15, thereby significantly reducing the flow in the hydrophobic pipe 7.

[0022] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A buried heat-insulated steam pipe drain structure, characterized by: It comprises an underground steam core pipe (1), a steam outlet core pipe (6), a three-way pipe (3) and a drain pipe (7); the steam outlet end of the underground steam core pipe (1) and the steam inlet end of the steam outlet core pipe (6) are connected to each other through two connections in the three-way pipe (3); The buried steam core pipe (1) is horizontally buried below the ground, and the outlet end of the steam outlet core pipe (6) is led upward to above the ground; the third channel (4) of the three-way pipe (3) is vertically downward, and the lower end of the third channel (4) is closed, so that the inner cavity of the third channel (4) forms a water storage tank; the lower end of the drain pipe (7) is connected to the water storage tank in the third channel (4); the upper end of the drain pipe (7) extends above the ground and is connected to the atmospheric environment.

2. The buried heat-insulated steam pipe drain structure according to claim 1, characterized in that: The parts of the buried steam core pipe (1), the steam outlet core pipe (6), the three-way pipe (3) and the drain pipe (7) below the ground are all wrapped outside the outer insulation pipe (2).

3. The buried heat-insulated steam pipe drain structure according to claim 1, characterized in that: The drain pipe (7) is provided with a drain valve.

4. The buried heat-insulated steam pipe drain structure according to claim 3, characterized in that: A steam jet suppressor (5) is provided at the upper end of the third channel (4) of the three-way pipe (3), and the steam jet suppressor (5) automatically suppresses high-flow steam jetting from the drain pipe (7).

5. The buried heat-insulated steam pipe drain structure according to claim 4, characterized in that: The steam jet suppressor (5) includes a sleeve (10) fixedly mounted on the inner upper end of the third passage (4), the upper and lower ends of the sleeve (10) are respectively provided with an upper annular inner edge (11) and a lower annular inner edge (17), the inner circles of the upper annular inner edge (11) and the lower annular inner edge (17) are respectively a condensate inlet (12) and a condensate outlet (16), a suspension plate (14) is coaxially arranged between the upper annular inner edge (11) and the lower annular inner edge (17), the lower side of the upper annular inner edge (11) is suspended and connected to the suspension plate (14) by a coaxial spring (13), and a throttling hole (15) is hollowed out in the center of the suspension plate (14).

6. The buried heat-insulated steam pipe drain structure according to claim 5, characterized in that: When the upper side of the suspension plate (14) is subjected to an impact force, the suspension plate (14) overcomes the pulling force of the spring (13) and moves downward to cover the condensed water outlet (16).

Images