Silencing type high-pressure steam drain pipe system

Abstract

The invention discloses a silencing type high-pressure steam drain pipe system which comprises a buried high-pressure steam pipe, a drain pipe buried section, a drain pipe overground section and a tail end silencer, the tail end silencer comprises a silencing inner barrel and a silencing outer barrel which are coaxial, and an annular silencing bin is formed between the silencing inner barrel and the silencing outer barrel; a plurality of circles of silencing holes a are formed in the wall body of the silencing inner cylinder in a hollowed-out mode, and a plurality of circles of silencing holes b are formed in the silencing outer cylinder in a hollowed-out mode; one end of the inner silencing cylinder is integrally and coaxially communicated with a silencer leading-in pipe, the tail end of the overground section of the drain pipe is communicated with the silencer leading-in pipe, and a left sealing disc and a right sealing disc are coaxially and integrally arranged at the two ends of a combined structure formed by the inner silencing cylinder and the outer silencing cylinder respectively; the silencer has the function of suppressing splashing of exhausted gas jet while efficient silencing is achieved.

Description

Technical Field

[0001] The invention belongs to the field of drain pipe silencing. Background Art

[0002] During the drainage process of the buried steam pipe, due to the high internal pressure in the steam pipe itself, fluid noise will be generated at the end of the drain pipe during the drainage operation. This noise will not only interfere with the surrounding environment, but may also cause hearing damage to the operator. Therefore, it is necessary to install a muffler at the end of the drain pipe to effectively reduce this noise. Since the mixture of condensed water and high-temperature steam discharged from the end of the drain pipe, the final discharged condensed water splash and high-temperature steam itself are also dangerous. Therefore, it is necessary to design a muffler at the end of the drain pipe that has high efficiency in silencer while also taking into account the ability to suppress the splash of the discharged gas jet. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a silencer type high pressure steam drain pipe system, which has the function of efficiently silencing while also suppressing the splashing of the discharged gas jet.

[0004] Technical solution: To achieve the above-mentioned purpose, the silencer type high-pressure steam drain pipe system of the present invention comprises an underground high-pressure steam pipe, an underground drain pipe section, an above-ground drain pipe section and a terminal silencer, wherein the terminal silencer comprises a coaxial silencer inner cylinder and a silencer outer cylinder, wherein an annular silencer chamber is formed between the silencer inner cylinder and the silencer outer cylinder, wherein the wall of the silencer inner cylinder is hollowed out with a plurality of circles a of silencer holes, and the wall of the silencer outer cylinder is hollowed out with a plurality of circles b of silencer holes; one end of the silencer inner cylinder is coaxially connected with a silencer inlet pipe, and the end of the above-ground drain pipe section is connected with the silencer inlet pipe, and the two ends of the combined structure formed by the silencer inner cylinder and the silencer outer cylinder are coaxially and integrally provided with a left sealing disk and a right sealing disk respectively.

[0005] Furthermore, the end of the above-ground section of the drain pipe is sleeved with the inlet end of the muffler inlet pipe through a sealing bearing.

[0006] Furthermore, the outer wall of the silencer outer cylinder is evenly spaced and integrally provided with at least six circles of annular walls along the length direction, and the six circles of annular walls divide the outer side of the silencer outer cylinder into five circles of annular grooves, and the five circles of annular grooves are respectively steel wool winding annular groove, opposite spraying annular groove, steel wool winding annular groove, opposite spraying annular groove and steel wool winding annular groove along the axial direction; a plurality of circles b of silencer holes are distributed on the bottom wall of each steel wool winding annular groove.

[0007] Furthermore, it also includes a rotating shaft parallel to the end silencer. The rotating shaft is in a brake locked state under normal conditions. After unlocking, the driving device can drive the rotating shaft to rotate. Three belt reels are coaxially installed on the rotating shaft. The three belt reels correspond to three steel wool winding grooves respectively. Each reel leads to a straight high-strength polyester belt. The end of each high-strength polyester belt is connected to a high-strength polyester belt winding section. The high-strength polyester belt winding section is an airtight structure. The high-strength polyester belt winding section is circularly wound and wrapped outside the corresponding steel wool winding groove, and the end of the high-strength polyester belt winding section is fixedly connected to the outer edge of the ring wall by a fixing strip.

[0008] Furthermore, a spring connecting plate is integrally provided on the outer wall of the end of the above-ground section of the drain pipe, a torsion spring is provided on the outer sleeve of the muffler inlet pipe, two ends of the torsion spring are respectively connected to the spring connecting plate and the left sealing plate, and the torsion spring applies a counterclockwise torque to the left sealing plate, so that the end muffler as a whole tends to rotate counterclockwise along its own axis; the end muffler maintains balance under the combined action of the tension of the taut high-strength polyester belts and the torsion of the torsion spring.

[0009] Furthermore, a section of steel wool strip is fixedly attached to the inner wall of the high-strength polyester belt winding section along the length direction, and the steel wool strip is wound in an arc shape and filled in the steel wool winding ring groove.

[0010] Furthermore, a plurality of pairs of nozzles are hollowed out in a circular array on the ring walls on both sides of any opposite spray ring groove, and the pairs of nozzles on two adjacent ring walls are aligned one by one, so that the jets ejected from the pairs of nozzles on two adjacent ring walls spray against each other in the opposite spray ring groove.

[0011] Furthermore, the working method of the silencer type high-pressure steam drain pipe system is as follows: after the draining process is completed, the driving device drives the three belt body reels to rotate synchronously through the rotating shaft, and the three belt body reels perform a forced winding action. The three high-strength polyester belt winding sections that were originally tightly wound in a circular shape and wrapped outside the corresponding three circles of steel wool winding ring grooves gradually detach from the end silencer along the tangential direction, and become a straight line tangent to the end silencer. In the process, the three steel wool strips also detach from the end silencer along the tangential direction and become a straight line tangent to the end silencer.

[0012] Beneficial effect: According to the present invention, most of the water vapor and condensed water shock waves sprayed into each steel wool winding ring groove along the radial direction from the b silencer hole are absorbed and eliminated by the steel wool strips filled in each steel wool winding ring groove, thereby achieving the effect of efficient sound elimination and shock wave elimination, which not only plays a role in efficient sound elimination but also achieves the effect of suppressing the jet intensity and splashing distance of the steam and condensed water finally discharged; because the pairs of nozzles on the two adjacent ring walls are aligned one by one, the jets sprayed from the pair of nozzles on the two adjacent ring walls spray each other in the spraying ring groove, thereby consuming the impact jet and reducing the splashing intensity after the spraying, and finally the condensed water and high-temperature steam are discharged to the outside more quietly and peacefully.

[0013] After the hydrophobic process is completed, the driving device drives the three belt body reels to rotate synchronously through the rotating shaft, and the three belt body reels perform a forced winding action, so that the three high-strength polyester belts drawn out are gradually wound on the three belt body reels respectively, so that the three high-strength polyester belts are forced to pull the terminal silencer in the tangential direction, so that the terminal silencer overcomes the torsion spring and actively rotates along the axis, so that the three high-strength polyester belt winding sections that were originally tightly wound in a circular shape and wrapped outside the corresponding three-circle steel wool winding ring groove gradually separate from the terminal silencer in the tangential direction, so that the three high-strength polyester belt winding sections become straight lines tangential to the terminal silencer. As shown in the figure, since the three steel wool strips are fixedly attached to the surfaces of the three high-strength polyester belt winding sections along the length direction, when the three high-strength polyester belt winding sections that were originally tightly wound in a circular shape and wrapped outside the corresponding three circles of steel wool winding ring grooves gradually separate from the end silencer along the tangential direction and become a straight line tangent to the end silencer 8, the three steel wool strips also separate from the end silencer along the tangential direction and become a straight line tangent to the end silencer 8. As shown in the figure, the three straight steel wool strips are now completely exposed to the air, thereby achieving the purpose of rapid air drying of the three steel wool strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the drainage pipeline;

[0015] Figure 2 It is a schematic structural diagram of a first embodiment of a terminal silencer;

[0016] Figure 3 Schematic diagram of the second embodiment of the terminal silencer in two states;

[0017] Figure 4 sectional views of the second embodiment of the terminal silencer in two states;

[0018] Figure 5 This is a schematic diagram showing that a section of steel wool strip is fixedly attached to the inner wall of a single high-strength polyester belt winding section along the length direction. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] As attached Figures 1 to 5 The silencer high pressure steam trap system shown in Figure 1 , including an underground high-pressure steam pipe 2, an underground drain pipe section 4, an above-ground drain pipe section 7 and a terminal silencer 8, the underground high-pressure steam pipe 2, a partial bottom end of the underground high-pressure steam pipe 2 is connected to the underground drain pipe section 4 through a condensate outlet nozzle 3, the outlet end of the underground drain pipe section 4 is connected to the above-ground drain pipe section 7, and the end of the above-ground drain pipe section 7 is connected to the atmospheric pressure environment through the terminal silencer 8; a valve 6 is provided on the above-ground drain pipe section 7, the underground high-pressure steam pipe 2 is covered with an insulation pipe 1, and the above-ground drain pipe section 7 is fixed to the ground by a bracket.

[0021] The first embodiment of the terminal silencer 8:

[0022] like Figure 2 As shown, the end silencer 8 includes a coaxial silencer inner cylinder 13 and a silencer outer cylinder 11, an annular silencer chamber 10 is formed between the silencer inner cylinder 13 and the silencer outer cylinder 11, a plurality of circles a silencer holes 14 are hollowed out on the wall of the silencer inner cylinder 13, and a plurality of circles b silencer holes 12 are hollowed out on the silencer outer cylinder 11; one end of the silencer inner cylinder 13 is coaxially connected to the silencer inlet pipe 9, and the end of the above-ground section 7 of the drain pipe is connected to the silencer inlet pipe 9, and the two ends of the combined structure formed by the silencer inner cylinder 13 and the silencer outer cylinder 11 are coaxially and integrally provided with a left sealing disk 16 and a right sealing disk 15.

[0023] Working principle of the first embodiment:

[0024] When it is necessary to implement the drain operation, open the valve 6, and the high-temperature condensed water gathered at the bottom of the buried high-pressure steam pipe 2 passes through the buried section 4 of the drain pipe, the above-ground section 7 of the drain pipe and the silencer inlet pipe 9 under the steam pressure in the buried high-pressure steam pipe 2, mixed with high-temperature water vapor, and is sprayed into the silencer inner tube 13 at high speed in the form of pulses. The high-temperature condensed water and water vapor mixture entering the silencer inner tube 13 is sprayed into the annular silencer chamber 10 in a divergent manner through several circles of a silencer holes 14, and diffusely dissipates and disperses the shock wave, thereby playing the role of silencing the first wave and dispersing the shock wave. Subsequently, the high-temperature condensed water and water vapor mixture sprayed into the annular silencer chamber 10 is further sprayed to the outside in a radial direction through several circles of b silencer holes 12. Although this process plays a certain silencing role, the noise after silencing is still intense. At the same time, the mixture of water vapor and condensed water sprayed from each of the several circles of b silencer holes 12 will be sprayed to a distance in a divergent manner. Since it is a high-temperature ejecta, it poses a risk to the surrounding environment and pedestrians.

[0025] The second embodiment is further optimized and improved based on the first embodiment:

[0026] like Figure 3 , 4 As shown in Figures 5 and 6, the end of the above-ground section 7 of the drain pipe is sleeved with the inlet end of the muffler inlet pipe 9 through a sealing bearing 21; the outer wall of the end of the above-ground section 7 of the drain pipe is integrally provided with a spring connecting plate 20, and the muffler inlet pipe 9 is covered with a torsion spring 19, and the two ends of the torsion spring 19 are respectively connected to the spring connecting plate 20 and the left sealing plate 16, and the torsion spring 19 applies a counterclockwise torque to the left sealing plate 16, so that the end muffler 8 as a whole has a tendency to rotate counterclockwise along its own axis;

[0027] The outer wall of the silencer outer cylinder 11 is equidistantly provided with at least six circles of annular walls 23 along the length direction, and the six circles of annular walls 23 divide the outer side of the silencer outer cylinder 11 into five circles of annular grooves, and the five circles of annular grooves are steel wool winding annular groove 24a, opposite spray annular groove 24b, steel wool winding annular groove 24a, opposite spray annular groove 24b and steel wool winding annular groove 24a in sequence along the axial direction; a plurality of circles b of silencer holes 12 are distributed on the bottom wall of each steel wool winding annular groove 24a.

[0028] It also includes a rotating shaft 26 parallel to the end silencer 8. The rotating shaft 26 is in a brake locked state under normal conditions. After unlocking, the driving device can drive the rotating shaft 26 to rotate. Three belt body reels 25 with equal distances are synchronously installed on the rotating shaft 26 coaxially. The three belt body reels 25 correspond to three steel wool winding grooves 24a respectively. Each reel 25 leads to a straight high-strength polyester belt 17. The end of each high-strength polyester belt 17 is connected to a high-strength polyester belt winding section 17a. The high-strength polyester belt winding section 17a is an airtight structure. The high-strength polyester belt winding section 17a is circularly wound and wrapped outside the corresponding steel wool winding groove 24a, and the end of the high-strength polyester belt winding section 17a is fixedly connected to the outer edge of the ring wall 23 by a fixing strip 19.

[0029] The end silencer 8 is kept balanced under the combined effect of the tensile force of the taut high-strength polyester belts 17 and the torsion force of the torsion spring 19 .

[0030] A section of steel wool strip 18 is fixedly attached to the inner wall of the high-strength polyester belt winding section 17a along the length direction. The specific attachment method can be achieved by sewing or gluing. The steel wool strip 18 is wound in an arc shape and filled in the steel wool winding ring groove 24a; a plurality of pairs of nozzles 22 are hollowed out in a circular array on the annular walls 23 on both sides of any opposite spraying ring groove 24b, and the pairs of nozzles 22 on two adjacent annular walls 23 are aligned one by one, so that the jets ejected from the pairs of nozzles 22 on the two adjacent annular walls 23 spray each other in the opposite spraying ring groove 24b, thereby consuming the impact jet and reducing the splashing intensity.

[0031] The working principle of the second embodiment:

[0032] In the initial state: the three high-strength polyester belt winding sections 17a are respectively tightly wound in a circular shape and wrapped outside the corresponding three-circle steel wool winding ring groove 24a, so that the three sections of dry steel wool strips 18 are all wound in an arc shape and filled in the three-circle steel wool winding ring groove 24a; in the initial state, the rotating shaft 26 is in a locked state, and the end muffler 8 remains balanced and stationary under the combined action of the tension of the taut high-strength polyester belts 17 and the torsion of the torsion spring 19;

[0033] When the drainage operation is required, the valve 6 is opened, and the high-temperature condensed water gathered at the bottom of the buried high-pressure steam pipe 2 is mixed with high-temperature water vapor and sprayed into the silencer inner cylinder 13 in the form of pulses at high speed through the buried section 4 of the drainage pipe, the above-ground section 7 of the drainage pipe and the silencer inlet pipe 9 under the steam pressure in the buried high-pressure steam pipe 2. The high-temperature condensed water and water vapor mixture entering the silencer inner cylinder 13 is sprayed into the annular silencer chamber 10 in a divergent manner through a plurality of circles of a silencer holes 14 and diffusely dissipates and disperses the shock wave, thereby playing the role of silencing and dispersing the shock wave of the first wave. Subsequently, the high-temperature condensed water and water vapor mixture sprayed into the annular silencer chamber 10 is further sprayed into each steel wool winding annular groove 24a in a radial direction through a plurality of circles of b silencer holes 12. Most of the water vapor and condensed water shock waves sprayed into each steel wool winding annular groove 24a from the b silencer holes 12 in a radial direction are filled in each steel wool winding annular groove 24a The steel wool strips 18 inside absorb and dissolve, thereby achieving the effect of efficient sound elimination and dissipation of shock waves, not only achieving efficient sound elimination but also achieving the effect of suppressing the jet intensity and splash distance of the steam and condensed water finally derived; since the steel wool strips 18 are made of a completely water-permeable and breathable material structure, the water vapor and condensed water subsequently sprayed into the steel wool winding annular groove 24a are further sprayed into the spraying annular groove 24b through the nozzles 22 on each annular wall 23 under the driving of pressure, and since the nozzles 22 on the two adjacent annular walls 23 are aligned one by one, the jets sprayed from the nozzles 22 on the two adjacent annular walls 23 spray each other in the spraying annular groove 24b, thereby consuming the impact jet and reducing the splash intensity after the spraying, and finally the condensed water and high-temperature steam are discharged to the outside more quietly and peacefully; when the jet sprayed from the nozzles 22 does not contain liquid water, it means that the drainage process is completed, and at this time, the valve 6 is immediately closed, and the silent drainage process ends;

[0034] Since a large amount of condensed water will flow through each steel wool winding annular groove 24a in a short period of time during the above-mentioned hydrophobic process, after the hydrophobic process is completed, a large amount of liquid water is still retained in the gaps in the sponge-like steel wool strips 18 in the steel wool winding annular grooves 24a, which cannot or has not been discharged in time. Since the steel wool strips 18 are in a relatively closed annular space at this time, the liquid water stored inside them cannot be air-dried in time. If liquid water is stored in the gaps in the steel wool strips 18 for a long time and it is difficult to air-dry, the steel wool strips 18 will accelerate corrosion and failure over time, or become moldy, thereby reducing the permeability of water vapor. At the same time, if a large amount of liquid water is stored in the steel wool strips 18 itself, it will form a strong resistance to the initial pulse stage of the subsequent second hydrophobic process, thereby reducing the hydrophobic efficiency. In order to solve this problem, after the hydrophobic process is completed, the following operations are further performed:

[0035] After the hydrophobic process is completed, the driving device drives the three belt body reels 25 to rotate synchronously through the rotating shaft 26, and the three belt body reels 25 perform a forced winding action, so that the three high-strength polyester belts 17 drawn out are gradually wound on the three belt body reels 25 respectively, so that the three high-strength polyester belts 17 are forced to pull the terminal silencer 8 along the tangential direction, so that the terminal silencer 8 overcomes the torsion spring 19 and actively rotates along the axis, so that the three high-strength polyester belt winding sections 17a that were originally tightly wound in a circular shape and wrapped outside the corresponding three-circle steel wool winding ring groove 24a gradually separate from the terminal silencer 8 along the tangential direction, so that the three high-strength polyester belt winding sections 17a become tangential to the terminal silencer 8. As shown in the figure, since the three steel wool strips 18 are fixedly attached to the surfaces of the three high-strength polyester belt winding sections 17a along the length direction, when the three high-strength polyester belt winding sections 17a originally tightly wound in a circular shape and wrapped outside the corresponding three-circle steel wool winding ring groove 24a gradually separate from the terminal silencer 8 along the tangential direction and become a straight line tangent to the terminal silencer 8, the three steel wool strips 18 also separate from the terminal silencer 8 along the tangential direction and become a straight line tangent to the terminal silencer 8, as shown in the figure, at this time, the three straight steel wool strips 18 are completely exposed to the air, thereby achieving the purpose of rapid air drying of the three steel wool strips 18;

[0036] When the silent drainage operation needs to be re-implemented, the driving device drives the three belt reels 25 to rotate synchronously in the opposite direction through the rotating shaft 26, and the three belt reels 25 unwind to the initial state, so that the three sections of dry steel wool strips 18 are rewound in a circular arc shape and filled in the three-circle steel wool winding ring groove 24a.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Silenced high pressure steam drain pipe system, characterized by: The invention comprises an underground high-pressure steam pipe (2), an underground drain pipe section (4), an above-ground drain pipe section (7) and a terminal silencer (8). The terminal silencer (8) comprises a coaxial silencer inner tube (13) and a silencer outer tube (11). An annular silencer chamber (10) is formed between the silencer inner tube (13) and the silencer outer tube (11). The wall of the silencer inner tube (13) is hollowed out with a plurality of circles of silencer holes (14), and the wall of the silencer outer tube (11) is hollowed out with a plurality of circles of silencer holes (12). One end of the silencer inner tube (13) is coaxially connected to a silencer inlet pipe (9). The terminal end of the above-ground drain pipe section (7) is connected to the silencer inlet pipe (9). The two ends of the combined structure formed by the silencer inner tube (13) and the silencer outer tube (11) are coaxially and integrally provided with a left sealing plate (16) and a right sealing plate (15).

2. The sound-absorbing high-pressure steam drain pipe system according to claim 1, characterized in that: The end of the above-ground section (7) of the drain pipe is sleeved with the inlet end of the muffler inlet pipe (9) via a sealing bearing (21).

3. The sound-absorbing high-pressure steam drain pipe system according to claim 2, characterized in that: The outer wall of the silencer outer cylinder (11) is provided with at least six circles of annular walls (23) equidistantly along the length direction, and the six circles of annular walls (23) divide the outer side of the silencer outer cylinder (11) into five circles of annular grooves, and the five circles of annular grooves are steel wool winding annular grooves (24a), opposite spraying annular grooves (24b), steel wool winding annular grooves (24a), opposite spraying annular grooves (24b) and steel wool winding annular grooves (24a) in order along the axial direction; and the plurality of circles of b silencer holes (12) are distributed on the bottom walls of the grooves of each steel wool winding annular groove (24a).

4. The sound-absorbing high-pressure steam drain pipe system according to claim 3, characterized in that: The invention also comprises a rotating shaft (26) parallel to the terminal silencer (8). The rotating shaft (26) is in a brake locked state under normal conditions. After unlocking, the driving device can drive the rotating shaft (26) to rotate. Three belt reels (25) are synchronously installed on the rotating shaft (26) coaxially. The three belt reels (25) correspond to three steel wool winding annular grooves (24a) respectively. Each reel (25) leads out a straight polyester belt (17). The end of each polyester belt (17) is connected to a polyester belt winding section (17a). The polyester belt winding section (17a) is an airtight structure. The polyester belt winding section (17a) is in a circular shape and is tightly wound and wrapped outside the corresponding steel wool winding annular groove (24a). The end of the polyester belt winding section (17a) is fixedly connected to the outer edge of the ring wall (23) through a fixing strip (19).

5. The sound-absorbing high-pressure steam drain pipe system according to claim 2, characterized in that: The outer wall of the end of the above-ground section (7) of the drain pipe is integrally provided with a spring connection disk (20); the muffler inlet pipe (9) is covered with a torsion spring (19); the two ends of the torsion spring (19) are respectively connected to the spring connection disk (20) and the left sealing disk (16); the torsion spring (19) applies a counterclockwise torque to the left sealing disk (16), so that the end muffler (8) as a whole tends to rotate counterclockwise along its own axis; the end muffler (8) maintains balance under the combined action of the tension of the tightened polyester belts (17) and the torsion of the torsion spring (19).

6. The sound-absorbing high-pressure steam drain pipe system according to claim 5, characterized in that: A section of steel wool strip (18) is fixedly attached to the inner wall of the polyester tape winding section (17a) along the length direction, and the steel wool strip (18) is wound in an arc shape and filled in the steel wool winding ring groove (24a).

7. The sound-absorbing high-pressure steam drain pipe system according to claim 6, characterized in that: A plurality of pairs of nozzles (22) are hollowed out in a circular array on the annular walls (23) on both sides of any of the opposite spraying annular grooves (24b), and the pairs of nozzles (22) on two adjacent annular walls (23) are aligned one by one, so that the jets sprayed from the pairs of nozzles (22) on the two adjacent annular walls (23) spray against each other in the opposite spraying annular grooves (24b).

8. The method for operating the silencer type high pressure steam trap system according to claim 7, characterized in that: After the hydrophobic process is completed, the driving device drives the three belt body reels (25) to rotate synchronously through the rotating shaft (26), and the three belt body reels (25) perform a forced winding action. The three polyester belt winding sections (17a) that were originally tightly wound in a circular shape and wrapped outside the corresponding three circles of steel wool winding ring grooves (24a) gradually separate from the terminal silencer (8) along the tangential direction and become a straight line tangent to the terminal silencer (8). In the process, the three steel wool strips (18) also separate from the terminal silencer (8) along the tangential direction and become a straight line tangent to the terminal silencer (8).

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