A temperature and pressure reduction device for steam pipeline

Abstract

The present invention relates to the technical field of pipeline cooling, and in particular to a cooling and decompression device for steam pipelines, comprising a cooling system, wherein the cooling system comprises a cooling pipeline, a rotating rod, a follower rod, a nozzle and a plurality of locking columns. The cooling pipeline comprises a cooling pipe section, and the rotating rod, the follower rod and the nozzle are sequentially arranged in the cooling pipe section. The plurality of locking columns rotate in conjunction with the follower rod, and a scraper is provided on the nozzle. An atomization channel is defined between the nozzle and the cooling pipe section. When the nozzle is in the cooling pipe section, the cooling and decompression device for steam pipelines of the present invention can clean impurities in the atomization channel through the scraper to prevent the atomization channel from being blocked. When the scraper moves, the scraper will collide with the inner wall of the cooling pipe section, thereby assisting the impurities to fall off, improving the cleaning effect of the atomization channel, and enabling the normal operation of the cooling and decompression device for steam pipelines.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline cooling, and in particular to a cooling and pressure reducing device for a steam pipeline. Background Art

[0002] In steam pipeline transportation, the steam temperature in the pipeline is often too high. Therefore, if untreated steam flows directly into downstream equipment or pipelines, it will have an adverse effect on the normal operation of downstream equipment or pipelines.

[0003] A steam pipeline desuperheater and pressure reducer is a device used to reduce the pressure and temperature of high-temperature, high-pressure steam to the desired parameters. It consists of two main components: a pressure reducing system and a temperature reducing system. The pressure reducing system reduces the steam pressure using a pressure reducing valve and a throttling orifice. The reduced-pressure steam then passes through the temperature reducing system, which cools the steam by spraying cooling water in atomized form.

[0004] However, when the existing steam pipeline temperature reduction and pressure reduction device cools the steam, the nozzle is very likely to become clogged during long-term use, affecting water atomization and even making it impossible to cool the steam pipeline, affecting the normal operation of the device. Summary of the Invention

[0005] The present invention provides a temperature and pressure reduction device for a steam pipeline, so as to solve the problem that when the existing temperature and pressure reduction device of a steam pipeline is used for a long time to reduce the temperature of steam, the nozzle is easily clogged, thereby affecting the normal operation of the device.

[0006] A temperature reduction and pressure reduction device for a steam pipeline of the present invention adopts the following technical solution: a temperature reduction and pressure reduction device for a steam pipeline, comprising a temperature reduction system, the temperature reduction system being used to reduce the temperature of the steam in the main pipeline, the steam flowing in the main pipeline along the axial direction of the main pipeline, and the direction of the steam flowing in the main pipeline being referred to as a first direction; the temperature reduction system comprising a temperature reduction pipeline, a rotating rod, a follower rod, a nozzle and a plurality of locking columns; the temperature reduction pipeline is installed on the main pipeline and one end thereof extends into the main pipeline; the temperature reduction pipeline comprises a temperature reduction pipeline section, the temperature reduction pipeline section is arranged along a first direction and is located in the main pipeline; the rotating rod, the follower rod and the nozzle are arranged in sequence along the first direction in the temperature reduction pipeline section, in the direction of steam flow, the rotating rod is located on the upstream side of the follower rod, and the rotating rod can only be rotated in the temperature reduction pipeline section The pipe section rotates around a first direction, and the rotating rod and the follower rod are connected by a first elastic member. The first elastic member is arranged along the first direction, and the follower rod can rotate with the rotating rod; a corrugated groove is opened on the follower rod around the first direction, and multiple locking columns are arranged along the second direction and are evenly distributed around the first direction on the cooling pipe section. The second direction is perpendicular to the first direction, and the second direction is the radial direction of the main pipeline. Multiple locking columns are all located in the corrugated groove and cooperate with the follower rod to rotate, and when the follower rod rotates, the locking column can cause the follower rod to move along the first direction; the nozzle is a conical structure, and the small end of the nozzle is connected to the follower rod, so that the nozzle can move synchronously with the follower rod. A scraper is provided in the circumferential direction of the nozzle, and an atomization channel is defined between the nozzle and the cooling pipe section, and the scraper is in the atomization channel.

[0007] Furthermore, the follower rod has a first corrugated surface and a second corrugated surface, and the corrugated groove is defined by the first corrugated surface, the second corrugated surface and the follower rod located between the first corrugated surface and the second corrugated surface; the first corrugated surface and the second corrugated surface both include a plurality of concave surfaces and a plurality of convex surfaces arranged around a first direction, and the concave surfaces and the convex surfaces are alternately distributed in sequence around the first direction, the concave surface of the first corrugated surface and the convex surface of the second corrugated surface are arranged face to face in the first direction, and the convex surface of the first corrugated surface and the concave surface of the second corrugated surface are arranged face to face in the first direction, and the locking column abuts against the concave surface / convex surface of the first corrugated surface and the convex surface / concave surface of the second corrugated surface.

[0008] Furthermore, the plurality of locking columns are all threadably matched with the cooling pipe section.

[0009] Furthermore, the cooling pipe also includes an adjusting pipe section, which is arranged along the second direction and extends out of the main pipe along the second direction. The adjusting pipe section is installed on the main pipe and is connected to the cooling pipe section, so that the cooling pipe has an L-shaped structure.

[0010] Furthermore, the regulating pipe section is connected to the main pipeline through a flange; and the regulating pipe section is threadedly connected to the cooling pipe section.

[0011] Furthermore, the cooling system also includes a first limiting mechanism, which includes multiple first limiting columns. The multiple first limiting columns are all arranged along the second direction and are evenly distributed around the first direction on the cooling pipe section, and rotate with the rotating rod to thereby limit the movement of the rotating rod along the first direction.

[0012] Furthermore, the cooling system also includes an adjusting mechanism, which includes an adjusting rod and an impeller. The adjusting rod is arranged along the second direction and installed in the adjusting pipe section. The adjusting rod can only be arranged to rotate around the second direction. The impeller is arranged on the adjusting rod and can rotate around the second direction under the impact of water flow, and drive the adjusting rod to rotate synchronously. A first bevel gear is coaxially and fixedly provided on the adjusting rod, and a second bevel gear is coaxially and fixedly provided on the rotating rod. The first bevel gear and the second bevel gear are meshed.

[0013] Furthermore, the cooling system also includes a second limiting mechanism, which includes multiple second limiting columns. The multiple second limiting columns are all arranged along the first direction and evenly distributed around the second direction on the adjusting pipe section, and rotate with the adjusting rod to thereby limit the movement of the adjusting rod along the first direction.

[0014] Furthermore, the adjusting mechanism also includes a first adjusting frame and a second adjusting frame, which are arranged in sequence on the adjusting rod along the second direction, the first adjusting frame is located on the side of the second adjusting frame away from the first bevel gear in the second direction, and the first adjusting frame can only rotate around the second direction relative to the adjusting rod, the second adjusting frame is mounted on the adjusting rod through a second elastic member, the second elastic member is arranged along the second direction, the impeller is arranged between the first adjusting frame and the second adjusting frame, the impeller includes a plurality of blades, the plurality of blades are evenly distributed around the second direction on the adjusting rod, the plurality of blades are inclined on the adjusting rod and can rotate around the first direction relative to the adjusting rod, one end of the blade along the second direction is hinged to the first adjusting frame ball, the other end of the blade along the second direction is hinged to the second adjusting frame ball, and the speed at which water flows into the adjusting pipe section is positively correlated with the speed at which water flows out through the nozzle in the form of atomization.

[0015] Furthermore, a first mounting surface is provided at one end of the locking column close to the follower rod along the second direction. The first mounting surface is a concave surface and can abut against the follower rod.

[0016] The beneficial effects of the present invention are as follows: a temperature reduction and pressure reduction device for a steam pipeline of the present invention is provided with a temperature reduction pipeline, a rotating rod, a follower rod, a nozzle and a plurality of locking columns. When cooling the steam in the main pipeline, cooling water is introduced into the temperature reduction pipeline, and the rotating rod is driven to rotate around a first direction at the same time. The rotating rod will drive the follower rod and the nozzle to rotate synchronously. Since the locking column is restricted in the temperature reduction pipeline and cannot move in the first direction, the corrugated groove will also generate relative rotation between the locking column during the rotation of the follower rod relative to the locking column. Then, under the prompting of the locking column, the follower rod can move back and forth in the first direction and drive the nozzle to move synchronously. When the nozzle is in the temperature reduction pipe section, when the high-speed water flow passes through the nozzle, the water flow will enter the atomization channel from the small end of the nozzle and then disperse from the large end of the nozzle, so that the cooling water is sprayed out in the form of atomization to cool the steam. At this time, the scraper on the nozzle will rotate in the atomization channel to clean the impurities in the atomization channel to prevent the atomization channel from being blocked. When the nozzle moves out of the cooling pipe section, the impurities on the scraper will be washed away by the high-speed water flow entering the cooling pipe section, and when the nozzle moves into the cooling pipe section again, the scraper will collide with the inner wall of the cooling pipe section, thereby assisting the impurities to fall off, improving the cleaning effect of the atomization channel, and further preventing the atomization channel from being blocked, so that the cooling and pressure reduction device used in the steam pipeline can operate normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram of a desuperheating system of an embodiment of a desuperheating and pressure reducing device for a steam pipeline according to the present invention;

[0019] Figure 2 A top view of a desuperheating system structure of an embodiment of a desuperheating and decompression device for a steam pipeline according to the present invention;

[0020] Figure 3 for Figure 2 Cross-sectional view along the middle line AA;

[0021] Figure 4 A schematic diagram of a partial mechanism of a desuperheating system of an embodiment of a desuperheating and pressure reducing device for a steam pipeline according to the present invention;

[0022] Figure 5 A schematic diagram of an adjusting mechanism of an embodiment of a temperature and pressure reduction device for a steam pipeline according to the present invention;

[0023] Figure 6 This is a schematic diagram of a locking column of an embodiment of a temperature and pressure reduction device for a steam pipeline according to the present invention.

[0024] In the figure: 100, main pipeline; 200, cooling pipeline; 210, cooling pipe section; 220, adjusting pipe section; 300, rotating rod; 310, second bevel gear; 350, first elastic member; 400, follower rod; 401, first corrugated surface; 402, second corrugated surface; 410, corrugated groove; 500, nozzle; 510, scraper; 520, screw; 600, locking column; 610, first mounting surface; 700, first limiting column; 800, adjusting mechanism; 810, adjusting rod; 811, first bevel gear; 820, impeller; 821, blade; 830, first adjusting frame; 840, second adjusting frame; 850, second elastic member; 900, second limiting column. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] An embodiment of a temperature and pressure reduction device for a steam pipeline according to the present invention is as follows: Figures 1 to 6 shown.

[0027] A temperature and pressure reduction device for a steam pipeline includes a temperature reduction system for reducing the temperature of steam within a main pipeline 100. The steam flows within the main pipeline 100 along the axis of the main pipeline 100. The direction of steam flow within the main pipeline 100 is referred to as a first direction. The temperature reduction system includes a temperature reduction pipeline 200, a rotating rod 300, a follower rod 400, a nozzle 500, and a plurality of locking pins 600. The temperature reduction pipeline 200 is mounted on the main pipeline 100, with one end extending into the main pipeline 100. Cooling water can enter the temperature reduction pipeline 200 through the end of the temperature reduction pipeline 200 extending from the main pipeline 100.

[0028] The cooling pipe 200 includes a cooling pipe section 210, which is arranged along a first direction and located within the main pipe 100. A rotating rod 300, a follower rod 400, and a nozzle 500 are sequentially arranged along the first direction within the cooling pipe section 210. The rotating rod 300 is located upstream of the follower rod 400 in the direction of steam flow and can only rotate within the cooling pipe section 210 in the first direction. The rotating rod 300 and the follower rod 400 are connected by a first elastic member 350, which is arranged along the first direction and is a spring. The follower rod 400 can rotate with the rotating rod 300. The follower rod 400 is provided with a corrugated groove 410 extending in a first direction. Multiple locking pins 600 are arranged along a second direction and are evenly distributed along the cooling pipe section 210 in the first direction. The second direction is perpendicular to the first direction and is the radial direction of the main pipe 100. The multiple locking pins 600 are located within the corrugated groove 410 and rotatably engage with the follower rod 400. When the follower rod 400 rotates, the locking pins 600 can cause the follower rod 400 to move in the first direction. The nozzle 500 has a conical structure. The small end of the nozzle 500 is connected to the follower rod 400 via a screw 520, enabling the nozzle 500 to move synchronously with the follower rod 400. A scraper 510 is provided circumferentially around the nozzle 500. The scraper 510 is elastic and defines an atomization channel between the nozzle 500 and the cooling pipe section 210. The scraper 510 is located within the atomization channel.

[0029] Specifically, the follower rod 400 has a first corrugated surface 401 and a second corrugated surface 402. The corrugated groove 410 is defined by the first corrugated surface 401, the second corrugated surface 402, and the follower rod 400 located between the first and second corrugated surfaces 401 and 402. The first and second corrugated surfaces 401 and 402 each include a plurality of concave surfaces and a plurality of convex surfaces arranged around a first direction, with the concave and convex surfaces alternately distributed around the first direction. The concave surface of the first corrugated surface 401 and the convex surface of the second corrugated surface 402 are arranged face to face in the first direction, and the convex surface of the first corrugated surface 401 and the concave surface of the second corrugated surface 402 are arranged face to face in the first direction. The locking post 600 abuts against the concave and convex surfaces of the first and second corrugated surfaces 401 and 402.

[0030] Three locking posts 600 are provided, and the three locking posts 600 are evenly distributed around the first direction on the cooling pipe section 210 , and the three locking posts 600 are all threadedly engaged with the cooling pipe section 210 .

[0031] A spline section is provided on the rotating rod 300, and a keyway section is provided on the follower rod 400. The spline section and the keyway section are arranged face to face in the first direction and the spline section and the keyway section are slidably fitted together, so that the follower rod 400 can rotate with the rotating rod 300 and move along the first direction relative to the rotating rod 300.

[0032] In this embodiment, by providing a cooling pipe 200, a rotating rod 300, a follower rod 400, a nozzle 500 and a plurality of locking pins 600, when cooling the steam in the main pipe 100, cooling water is introduced into the cooling pipe 200, and the rotating rod 300 is driven to rotate around a first direction at the same time, and the rotating rod 300 will drive the follower rod 400 and the nozzle 500 to rotate synchronously. Moreover, since the locking pin 600 is restricted in the cooling pipe 200 and cannot move along the first direction, the corrugated groove 410 will also engage with the locking pin 600 during the rotation of the follower rod 400 relative to the locking pin 600. 00, and then, under the instigation of the locking column 600, the follower rod 400 can move back and forth along the first direction, and drive the nozzle 500 to move synchronously, so that when the nozzle 500 is in the cooling pipe section 210, the high-speed water flow will enter the atomization channel from the small end of the nozzle 500 when passing through the nozzle 500, and then disperse from the large end of the nozzle 500, so that the cooling water is sprayed out in the form of atomization to cool the steam. At this time, the scraper 510 on the nozzle 500 will rotate in the atomization channel to clean the impurities in the atomization channel to prevent the atomization channel from being blocked. When the nozzle 500 moves out of the cooling pipe section 210, the impurities on the scraper 510 will be washed away by the high-speed water flow entering the cooling pipe section 210, and when the nozzle 500 moves into the cooling pipe section 210 again, the scraper 510 will collide with the inner wall of the cooling pipe section 210, thereby assisting the impurities to fall off, improving the cleaning effect of the atomization channel, further preventing the atomization channel from being blocked, and allowing the cooling and pressure reduction device used in the steam pipeline to operate normally.

[0033] In this embodiment, a superheating and decompression device for a steam pipeline further includes a decompression system (not shown in the accompanying drawings) for decompressing the main pipeline 100. The decompression system is mounted on the main pipeline 100, upstream of the superheating system in the direction of steam flow. The decompression system is used to reduce the steam pressure within the main pipeline 100. This system is known in the art and will not be described in detail here. During operation, the steam within the main pipeline 100 is first decompressed by the decompression system, after which it is cooled by the superheating system.

[0034] In this embodiment, the cooling pipe 200 also includes an adjusting pipe section 220, which is arranged along the second direction and extends out of the main pipe 100 along the second direction. The adjusting pipe section 220 is detachably installed on the main pipe 100, and the adjusting pipe section 220 is connected to the cooling pipe section 210, so that the cooling pipe 200 has an L-shaped structure.

[0035] Specifically, the regulating pipe section 220 is connected to the main pipeline 100 via a flange. The regulating pipe section 220 is threadedly connected to the cooling pipe section 210.

[0036] When in use, cooling water enters the cooling pipe section 210 from the regulating pipe section 220 and is sprayed out in the form of atomization after passing through the nozzle 500 to cool the steam.

[0037] In this embodiment, the cooling system further includes a first limiting mechanism, which includes a plurality of first limiting posts 700. The plurality of first limiting posts 700 are arranged along the second direction and are evenly distributed along the first direction on the cooling pipe section 210. A first annular groove is defined on the rotating rod 300 along the first direction. The plurality of first limiting posts 700 are located within the first annular groove and rotatably engage with the rotating rod 300, thereby limiting movement of the rotating rod 300 along the first direction. Specifically, the first limiting posts 700 are threadedly engaged with the cooling pipe section 210.

[0038] In this embodiment, the cooling system also includes an adjusting mechanism 800, which includes an adjusting rod 810 and an impeller 820. The adjusting rod 810 is arranged along the second direction and installed in the adjusting pipe section 220. The adjusting rod 810 can only be arranged to rotate around the second direction. The impeller 820 is arranged on the adjusting rod 810 and can rotate around the second direction under the impact of water flow, and drive the adjusting rod 810 to rotate synchronously. A first bevel gear 811 is coaxially and fixedly provided on the adjusting rod 810, and a second bevel gear 310 is coaxially and fixedly provided on the rotating rod 300. The first bevel gear 811 and the second bevel gear 310 are meshed.

[0039] This embodiment is provided with an adjustment mechanism 800. When in use, after the cooling water enters the adjustment pipe section 220, the impeller 820 will rotate around the second direction under the impact of the water flow, and drive the adjustment rod 810 to rotate synchronously, and then drive the second bevel gear 310 to rotate through the first bevel gear 811, so that the rotating rod 300 can drive the follower rod 400 to rotate, and through the follower rod 400, the nozzle 500 can rotate around the first direction while moving back and forth along the first direction.

[0040] In this embodiment, the adjustment mechanism 800 also includes a first adjustment frame 830 and a second adjustment frame 840. The first adjustment frame 830 and the second adjustment frame 840 are arranged in sequence on the adjustment rod 810 along the second direction. The first adjustment frame 830 is located on the side of the second adjustment frame 840 away from the first bevel gear 811 in the second direction, and the first adjustment frame 830 can only rotate in the second direction relative to the adjustment rod 810. The second adjustment frame 840 is mounted on the adjustment rod 810 through the second elastic member 850, so that the second adjustment frame 840 can rotate in the second direction relative to the adjustment rod 810 and can slide in the second direction relative to the adjustment rod 810. The second elastic member 850 is arranged along the second direction, and the second elastic member 850 is a spring.

[0041] The impeller 820 is arranged between the first adjustment frame 830 and the second adjustment frame 840. The impeller 820 includes a plurality of blades 821. The plurality of blades 821 are evenly distributed around the second direction on the adjustment rod 810. The plurality of blades 821 are all tilted on the adjustment rod 810 and can rotate around the first direction relative to the adjustment rod 810. One end of the blade 821 along the second direction is ball-hinged with the first adjustment frame 830, and the other end of the blade 821 along the second direction is ball-hinged with the second adjustment frame 840, so that the speed at which the water flows into the adjustment pipe section 220 is positively correlated with the speed at which the water flows out in the form of atomization through the nozzle 500.

[0042] Specifically, the blade 821 is rotatably engaged with the adjustment rod 810 via the rotating block. The rotation of the blade 821 is limited by the rotating block, so that the blade 821 can rotate relative to the adjustment rod 810 around the first direction.

[0043] Furthermore, the blade 821 has a telescopic section that is elastic. This section provides a buffering effect on the movement of the second adjustment frame 840 when the flow rate of the cooling water entering the adjustment pipe section 220 changes, thereby improving the stability of the adjustment mechanism 800. It should be noted that the telescopic section has a limited telescopic length and does not affect the vertical movement of the second adjustment frame 840.

[0044] In this embodiment, by providing a first regulating frame 830 and a second regulating frame 840, during normal use, after the cooling water enters the regulating pipe section 220, it impacts the blades 821 on the impeller 820, driving the impeller 820 to rotate while causing the second regulating frame 840 to compress the second elastic member 850. After passing through the nozzle 500, the water is sprayed out from the cooling pipe section 210 in the form of atomization. When the atomization channel is blocked, the speed of the water sprayed out in the form of atomization through the nozzle 500 will decrease, and the flow speed of the cooling water entering the regulating pipe section 220 will also decrease synchronously. The second elastic member 850 will reset and drive the second regulating frame 840 to move along the second direction toward the side close to the first regulating frame 830, shortening the distance between the first regulating frame 830 and the second regulating frame 840, so that the inclination degree of the blades 821 on the impeller 820 increases. This increases the water-blocking capacity of the blades 821, and at the same time increases the rotational force of the impeller 820, so that the adjusting rod 810 can maintain rotation, and drives the second bevel gear 310 to rotate through the first bevel gear 811, so that the rotating rod 300 can drive the follower rod 400 to rotate. The rotation of the follower rod 400 will cause the nozzle 500 to rotate around the first direction while moving back and forth along the first direction, and the scraper 510 on the nozzle 500 is used to clean the blocked part in the atomization channel. After the cleaning is completed, the speed of the water flow sprayed out of the nozzle 500 in the form of atomization will increase, and then the speed of the water flow entering the adjusting pipe section 220 from the side of the adjusting pipe section 220 will also increase, so that the second elastic member 850 is pressurized again, and the blades 821 of the impeller 820 are driven downward through the second adjusting frame 840, thereby reducing the inclination degree of the blades 821 of the impeller 820.

[0045] It should be noted that if the inclination of the blades 821 of the impeller 820 increases, it will hinder the passage of cooling water when the cooling water enters the regulating pipe section 220, which is not conducive to cooling the steam. Therefore, when the atomization channel is not blocked, it is not necessary to make the blades 821 of the impeller 820 too inclined, so that it can maintain the normal rotation of the regulating rod 810.

[0046] That is, this embodiment adjusts the inclination of the blades 821 of the impeller 820 by the degree of blockage of the atomization channel, adjusts the rotational force of the impeller 820, and enables the adjustment rod 810 to maintain normal rotation, thereby preventing the blockage of the atomization channel from affecting the normal operation of the cooling and pressure reduction device for the steam pipeline.

[0047] In this embodiment, the cooling system further includes a second limiting mechanism, which includes a plurality of second limiting posts 900. The plurality of second limiting posts 900 are arranged along the first direction and are evenly distributed along the second direction on the adjustment tube section 220. The adjustment rod 810 is provided with a second annular groove along the first direction. The plurality of second limiting posts 900 are all located within the second annular groove and rotatably engage with the adjustment rod 810, thereby limiting the movement of the adjustment rod 810 along the first direction. Specifically, the second limiting posts 900 are threadedly engaged with the adjustment tube section 220.

[0048] Furthermore, the locking post 600, the first limiting post 700, and the second limiting post 900 have the same structure. The locking post 600 has a first mounting surface 610 disposed on one end thereof, which is proximate to the follower rod 400 and is concave and capable of abutting the follower rod 400. The first limiting post 700 has a second mounting surface disposed on one end thereof, which is proximate to the rotation rod 300 and is concave and capable of abutting the rotation rod 300. The second limiting post 900 has a third mounting surface disposed on one end thereof, which is proximate to the adjustment rod 810 and is concave and capable of abutting the adjustment rod 810.

[0049] By setting a first mounting surface 610 on the locking column 600, the internal stress between the locking column 600 and the follower rod 400 can be reduced without affecting the rotation of the follower rod 400. Similarly, by setting a second mounting surface on the first limiting column 700, the internal stress between the first limiting column 700 and the rotating rod 300 can be reduced without affecting the rotation of the rotating rod 300. By setting a third mounting surface on the second limiting column 900, the internal stress between the second limiting column 900 and the adjusting rod 810 can be reduced without affecting the rotation of the adjusting rod 810.

[0050] In combination with the above embodiment, the specific working process is as follows:

[0051] When in use, the steam in the main pipeline 100 is first reduced in pressure by the decompression system, and then the reduced-pressure steam is cooled by the temperature reduction system.

[0052] During cooling, after the cooling water enters the regulating pipe section 220, the impeller 820 will rotate in the second direction under the impact of the water flow, driving the impeller 820 to rotate while causing the second regulating frame 840 to compress the second elastic member 850 and drive the regulating rod 810 to rotate synchronously, and then drive the second bevel gear 310 to rotate through the first bevel gear 811, so that the rotating rod 300 can drive the follower rod 400 to rotate, and the nozzle 500 is rotated in the first direction through the follower rod 400, and because the locking column 600 is restricted in the cooling pipe 200 and cannot move in the first direction, when the follower rod 400 rotates relative to the locking column 600, the nozzle 500 is rotated in the first direction. During the cooling process, the corrugated groove 410 will also generate relative rotation with the locking column 600, and then, under the prompting of the locking column 600, the follower rod 400 can move back and forth along the first direction, and drive the nozzle 500 to move synchronously, so that when the nozzle 500 is in the cooling pipe section 210, the high-speed water flow will enter the atomization channel from the small end of the nozzle 500 when passing through the nozzle 500, and then disperse from the large end of the nozzle 500, so that the cooling water is sprayed out in the form of atomization to cool the steam. At this time, the scraper 510 on the nozzle 500 will rotate in the atomization channel to clean up the impurities in the atomization channel to prevent the atomization channel from being blocked. When the nozzle 500 moves out of the cooling pipe section 210, the impurities on the scraper 510 will be washed away by the high-speed water flow entering the cooling pipe section 210, and when the nozzle 500 moves into the cooling pipe section 210 again, the scraper 510 will collide with the inner wall of the cooling pipe section 210, thereby assisting the impurities to fall off, improving the cleaning effect of the atomization channel, further preventing the atomization channel from being blocked, and allowing the cooling and pressure reduction device used in the steam pipeline to operate normally.

[0053] When the atomizing channel is blocked, the speed of the water sprayed out through the nozzle 500 in the form of atomization will decrease, and the speed of the cooling water entering the regulating pipe section 220 will also decrease synchronously. The second elastic member 850 will reset and drive the second regulating frame 840 to move along the second direction toward the side close to the first regulating frame 830, shortening the distance between the first regulating frame 830 and the second regulating frame 840, so that the inclination of the blade 821 on the impeller 820 increases, thereby increasing the water blocking capacity of the blade 821, and at the same time increasing the rotational force of the impeller 820, so that the regulating rod 810 can maintain rotation, and drives the second bevel gear 310 to rotate through the first bevel gear 811, so that the rotating rod 30 0 can drive the follower rod 400 to rotate. The rotation of the follower rod 400 will cause the nozzle 500 to rotate around the first direction while reciprocating in the first direction, and the scraper 510 on the nozzle 500 is used to clean the blocked part in the atomization channel. After the cleaning is completed, the speed of the water flow sprayed out through the nozzle 500 in the form of atomization will increase, and then the speed of the water flow entering the regulating pipe section 220 from the side of the regulating pipe section 220 will also increase, so that the second elastic member 850 is compressed again, and the blades 821 of the impeller 820 are driven downward through the second regulating frame 840, thereby reducing the inclination of the blades 821 of the impeller 820, so that the temperature and pressure reduction device for the steam pipeline is restored to normal use.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A temperature and pressure reduction device for a steam pipeline, characterized by: The cooling system includes a cooling system for cooling the steam in the main pipe, the steam flows in the main pipe along the axial direction of the main pipe, and the direction of the steam flow in the main pipe is called the first direction; the cooling system includes a cooling pipe, a rotating rod, a follower rod, a nozzle and a plurality of locking columns; the cooling pipe is installed on the main pipe and one end thereof extends into the main pipe; the cooling pipe includes a cooling pipe section, the cooling pipe section is arranged along the first direction and is located in the main pipe; the rotating rod, the follower rod and the nozzle are arranged in sequence along the first direction in the cooling pipe section, in the direction of steam flow, the rotating rod is located on the upstream side of the follower rod, and the rotating rod can only rotate around the first direction in the cooling pipe section, the rotating rod The cooling tube section is connected to the cooling tube section by a first elastic member, the first elastic member is arranged along the first direction, and the cooling tube section can rotate with the rotating rod; a corrugated groove is provided on the cooling tube section around the first direction, and a plurality of locking columns are arranged along a plurality of radial directions of the outer wall of the cooling tube section and are evenly distributed around the first direction on the cooling tube section; the plurality of locking columns are located in the corrugated groove and cooperate with the cooling tube section for rotation, and when the cooling tube section rotates, the locking columns can cause the cooling tube section to move along the first direction; the nozzle is a conical structure, and the small end of the nozzle is connected to the cooling tube section so that the nozzle can move synchronously with the cooling tube section, and a scraper is provided in the circumferential direction of the nozzle, and an atomization channel is defined between the nozzle and the cooling tube section, and the scraper is located in the atomization channel.

2. A temperature and pressure reduction device for a steam pipeline according to claim 1, characterized in that: The follower rod is provided with a first corrugated surface and a second corrugated surface, and the corrugated groove is defined by the first corrugated surface, the second corrugated surface and the follower rod located between the first corrugated surface and the second corrugated surface; the first corrugated surface and the second corrugated surface both include a plurality of concave surfaces and a plurality of convex surfaces arranged around a first direction, and the concave surfaces and the convex surfaces are alternately distributed around the first direction, the concave surface of the first corrugated surface and the convex surface of the second corrugated surface are arranged face to face in the first direction, and the convex surface of the first corrugated surface and the concave surface of the second corrugated surface are arranged face to face in the first direction, and the locking column abuts against the concave / convex surfaces of the first corrugated surface and the convex / concave surfaces of the second corrugated surface.

3. The temperature and pressure reduction device for a steam pipeline according to claim 1, characterized in that: The plurality of locking columns are all matched with the threads of the cooling pipe section.

4. The temperature and pressure reduction device for a steam pipeline according to claim 1, characterized in that: The cooling pipe also includes an adjusting pipe section, which is arranged along the second direction and extends out of the main pipe along the second direction. The second direction is perpendicular to the first direction. The adjusting pipe section is installed on the main pipe and is connected to the cooling pipe section, so that the cooling pipe has an L-shaped structure.

5. The temperature and pressure reduction device for a steam pipeline according to claim 4, characterized in that: The regulating pipe section is connected to the main pipeline through a flange; the regulating pipe section is connected to the cooling pipe section through threads.

6. The temperature and pressure reduction device for a steam pipeline according to claim 1, characterized in that: The cooling system also includes a first limiting mechanism, which includes multiple first limiting columns. The multiple first limiting columns are arranged along multiple radial directions of the outer wall of the cooling pipe section and are evenly distributed around the first direction on the cooling pipe section, and rotate with the rotating rod to limit the movement of the rotating rod along the first direction.

7. The temperature and pressure reduction device for a steam pipeline according to claim 4, characterized in that: The cooling system also includes an adjusting mechanism, which includes an adjusting rod and an impeller. The adjusting rod is arranged along the second direction and installed in the adjusting pipe section. The adjusting rod can only be rotated around the second direction. The impeller is arranged on the adjusting rod and can rotate around the second direction under the impact of water flow, and drive the adjusting rod to rotate synchronously. A first bevel gear is coaxially and fixedly provided on the adjusting rod, and a second bevel gear is coaxially and fixedly provided on the rotating rod. The first bevel gear and the second bevel gear are meshed.

8. The temperature and pressure reduction device for a steam pipeline according to claim 7, characterized in that: The cooling system also includes a second limiting mechanism, which includes multiple second limiting columns. The multiple second limiting columns are arranged along multiple radial directions of the outer wall of the adjusting pipe section and are evenly distributed around the second direction on the adjusting pipe section, and rotate with the adjusting rod to limit the movement of the adjusting rod along the first direction.

9. The temperature and pressure reduction device for a steam pipeline according to claim 7, characterized in that: The adjusting mechanism also includes a first adjusting frame and a second adjusting frame, which are arranged in sequence on the adjusting rod along the second direction. The first adjusting frame is located on the side of the second adjusting frame away from the first bevel gear in the second direction, and the first adjusting frame can only rotate around the second direction relative to the adjusting rod. The second adjusting frame is mounted on the adjusting rod through a second elastic member, and the second elastic member is arranged along the second direction. The impeller is arranged between the first adjusting frame and the second adjusting frame, and the impeller includes a plurality of blades, and the plurality of blades are evenly distributed around the second direction on the adjusting rod. The plurality of blades are all inclined on the adjusting rod and can rotate around the second direction relative to the adjusting rod. One end of the blade along the second direction is hinged to the first adjusting frame ball, and the other end of the blade along the second direction is hinged to the second adjusting frame ball, so that the speed at which water flows into the adjusting pipe section is positively correlated with the speed at which water flows out through the nozzle in the form of atomization.

10. The temperature and pressure reduction device for a steam pipeline according to claim 1, characterized in that: A first mounting surface is provided at one end of the locking column close to the follower rod along the axial direction of the locking column. The first mounting surface is a concave surface and can abut against the follower rod.

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