A high efficiency steam tracing pipe drain device

Abstract

The present application relates to heat tracing pipeline drainage technical field, especially in a kind of for high-efficiency steam heat tracing pipeline drainage device.Its technical scheme includes: one-way valve, its circumscribed drainage pan will condensate water form one-way flow;Collection bin, it is connected with one-way valve buffer by one-way valve sent into condensate water and steam;Supply pipe, it is connected with the bottom of collection bin formation for temporary storage condensate water U-shaped cavity;Buffer tank unit, with supply pipe free end communication receives by supply pipe introduced condensate water and transforms kinetic energy concentration and separates condensate water impurity;Buffer tank unit includes cover tank one, bottom fixed with base pipe in cover tank one.This application can solve the problem of existing drainage pressure difference caused by steam condensate water transport when steam content is high, to improve steam utilization rate;And no leakage throughout, form closed cycle utilization;While reducing the probability that existing drainage device condensate water discharge easily causes water hammer effect on pipeline under high pressure difference condition.

Description

Technical Field

[0001] This invention relates to the field of steam tracing pipeline drainage technology, and more particularly to a drainage device for high-efficiency steam tracing pipelines. Background Technology

[0002] In production practice, some easily solidified media, such as crude oil and heavy oil, may solidify and block pipelines during pipeline transportation as their temperature gradually decreases and their viscosity gradually increases. Therefore, when transporting such media, it is necessary to take heat tracing measures for the pipeline to maintain a certain temperature for the material.

[0003] Chinese patent application number 202020784101.3 discloses a steam tracing and condensate drain system, including a steam distribution station, a heat tracing pipe, a drain pan, a pipeline, a condensate recovery device, a steam flash tank, and a steam ejector. The two ends of the heat tracing pipe are connected to the steam distribution station and the drain pan, respectively. The drain pan is connected to the inlet of the condensate recovery device via a pipeline, and the outlet of the condensate recovery device is connected to the inlet of the steam flash tank via a pipeline. The outlet of the steam flash tank is connected to the steam ejector. This technical approach significantly reduces the number of valves by eliminating numerous drain valves, simplifying the heat tracing system and thus reducing potential steam leakage points and preventing steam leakage. It also reduces installation workload, installation costs, and operation and maintenance workload. The condensate recovery device operates under high back pressure conditions and allows flash steam to be recycled, thereby improving steam utilization efficiency and saving energy.

[0004] However, some shortcomings were discovered after the above technical solution was put into use:

[0005] By eliminating multiple steam traps and using a condensate recovery unit to perform the function of steam traps, the design of this system allows water to accumulate in the regulating tank. The continuous and unstable condensate flow received by the condensate recovery unit causes water turbulence within the regulating tank, and its float uses buoyancy to control the opening and closing of the valves. Under unstable water conditions, condensate passing through the valves will carry some steam along with it into the subsequent recovery main. Due to the unstable valve opening and closing, under intermittent condensate supply conditions and unstable steam pressure, the back pressure of the steam will continuously send condensate into the recovery main and its connected pipes, causing a water hammer effect that will accelerate pipe damage.

[0006] Meanwhile, some impurities may be present in the condensate within the continuously circulating pipeline, and there is no corresponding removal measure in the above technical solution. Summary of the Invention

[0007] The purpose of this invention is to address the problems existing in the background art by proposing a high-efficiency steam tracing pipeline drainage device that reduces the water hammer effect in the drainage process, reduces the travel distance of the recovered steam in the pipeline to improve the steam recovery rate, and concentrates and removes condensate impurities.

[0008] The technical solution of the present invention: a drain device for high-efficiency steam tracing pipelines, including a one-way valve, whose external drain pan causes condensate to flow in one direction;

[0009] The collection chamber is connected to a check valve to buffer the condensate and steam supplied by the check valve.

[0010] The supply pipe connects to the bottom of the collection bin to form a U-shaped cavity for temporary storage of condensate;

[0011] The buffer tank unit is connected to the free end of the supply pipe to receive condensate introduced by the supply pipe, convert kinetic energy, concentrate and separate impurities in the condensate;

[0012] The buffer tank unit includes a capped tank, a base tube fixed at the bottom of the capped tank, a supply pipe connected to the capped tank and docked with the base tube, a floating component slidably arranged inside the capped tank, and a conversion component fixed on the lower side of the floating component that cooperates with the base tube and uses the impact kinetic energy of condensate to move upward and disturb the condensate in the capped tank to form a vortex. The vortex concentrates the impurities in the condensate at the axis of the capped tank.

[0013] The diversion tank unit is connected to the capped tank unit through the stepped equalization pipe 1 and equalization pipe 2, so as to use the impact kinetic energy of the condensate introduced by the supply pipe to move the floating part upward, and the power is transmitted by the bridge to assist the diversion of condensate and steam.

[0014] The drain pipe is connected to the external condensate recovery main pipe and the distribution tank unit to divert condensate and send it out by the steam pressure inside the distribution tank;

[0015] Steam pipes are connected to external steam recovery pipes and are located at the top of the distribution tank unit.

[0016] Preferably, the floating component includes a floating plate slidably disposed within a sealed tank. The floating plate has a through-hole ventilation hole. A fixed ring corresponding to the ventilation hole is fixed to the inner bottom of the floating plate. A stud is inserted into the fixed ring and forms a channel with the ventilation hole. A plug is fixed to the upper end of the stud to block the ventilation hole and isolate the two sides of the floating plate when condensate impacts.

[0017] Preferably, the conversion component includes a shaft fixed to the lower side of the floating plate and rotatably connected thereto. The lower end of the shaft is fixed with a turbine that is adapted to the base tube and moves therein, so that condensed water impacts the turbine blades to form rotation and creates vortices that turbulent the water flow.

[0018] Preferably, a filter disc is movably sleeved on the outer side of the base tube, and a bent rod is fixed on the upper side of the filter disc and arranged on the turbine movement path. A bottom fastener is fixed on the inner side of the first sealing tank to form an annular closed cavity with the inner wall of the first sealing tank. The bottom fastener and the base tube, together with the filter disc, cover to form an annular cavity for concentrating condensate impurities.

[0019] Preferably, the middle part of the shaft has a multi-faceted structure, and a matching sliding sleeve is movably sleeved on the shaft. A scraper strip that contacts the top of the bottom fastener is fixed on the sliding sleeve.

[0020] Preferably, the bottom of the sealed tank is connected to a slag discharge pipe, which communicates with the annular cavity to discharge impurities therein, and the free end of the slag discharge pipe is connected to an electrically controlled valve.

[0021] Preferably, the diversion tank unit includes a capped tank two connected to a pressure equalization pipe one and a pressure equalization pipe two. The lower side of the capped tank two is fixed with a bottom cylinder that communicates with a drain pipe. A water flow hole is opened at the bottom of the capped tank two on the upper side of the bottom cylinder. An adjustable float that limits the range of motion and is fixed to the bridge is slidably arranged in the water flow hole.

[0022] Preferably, the regulating float includes a movable component inserted into the water flow hole, a sealing plate fixed to the upper end of the movable component, an upper extension column fixed to the upper side of the sealing plate, a limiting ring fixed to the lower end of the movable component to restrict the upward movement range of the movable component in the bottom cylinder, a flow channel being provided between the limiting ring and the movable component, and a buoyancy disk fixed to the bridge frame at the upper end of the upper extension column.

[0023] Preferably, the bridge frame includes crossbars, on which are fixed sliding members 1 that move within the first sealed tank and are fixed to the floating plate, and sliding members 2 that move within the second sealed tank and are fixed to the buoyancy plate.

[0024] Preferably, the steam pipe is fixed on the upper side of the sealed tank.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects:

[0026] Because numerous steam pipes connect to the steam trap, the steam pressure varies across different pipes, resulting in instability in the supplied steam pressure. This instability in the condensate and steam entering the supply pipe leads to varying forces driving the turbine, causing condensate entering the first capped tank to form swells. The floating roof can prevent the formation of swells by acting directly on the floating roof, thus mitigating the pressure instability caused by the pressure difference when using steam pressure to deliver condensate to the main recovery water pipe. This also reduces the possibility of steam entering the recovery main pipe and lowers the risk of water hammer.

[0027] The turbine rotates due to the impact of condensate, which in turn drives the sliding sleeve on the shaft to rotate the scraper blades and scrape the upper side of the bottom fastener. When the turbine is completely separated from the base tube and is impacted by the condensate, the impacting water flow will disturb the internal condensate and form a vortex. This vortex will then collect impurities in the condensate in the middle of the capping tank. As the turbine moves, the bending rod is pushed, causing the filter disc to move upward. The vortex will then cause the impurities to approach the axis of the capping tank and fall from the upper side of the bottom fastener into the annular cavity. The impurities can be discharged through the slag discharge pipe and the electric control valve.

[0028] When the vapor pressure differential is small, the vent will be connected, and after the turbine detaches from the base tube, it will move upward under the action of vapor pressure and condensate to overcome the gravity of the plug and the insert, increasing the throughput of condensate or steam, and finally entering the upper side of the floating roof through the vent. When the vapor pressure surges from low pressure to high pressure, the surge in gas pressure, along with condensate, enters the sealed tank. Under high pressure, the pressure on the lower side of the floating roof will suddenly increase, creating pressure that completely overcomes the insert and plug, forcing the plug and the top of the vent to seal. Consequently, the vapor pressure needs to completely overcome the gravity of the floating roof and other structures to move upward, thereby improving the ability to balance the surge in vapor pressure and maintaining a relatively stable vapor pressure. Attached Figure Description

[0029] Figure 1 A schematic diagram of one embodiment of the present invention is provided;

[0030] Figure 2 for Figure 1 Internal structural cross-sectional view;

[0031] Figure 3 for Figure 2 A schematic diagram of a partial structure;

[0032] Figure 4 for Figure 3 A magnified structural diagram at point B;

[0033] Figure 5 for Figure 1 Schematic diagram of the floating component;

[0034] Figure 6 for Figure 1 Another structural schematic diagram of the floating component;

[0035] Figure 7 for Figure 1 Schematic diagram of the intermediate conversion component;

[0036] Figure 8 for Figure 2 A magnified structural diagram at point A;

[0037] Figure 9 for Figure 1 A schematic diagram of the structure of the valve component.

[0038] Figure label:

[0039] 10. Check valve;

[0040] 20. Collection warehouse;

[0041] 30. Supply management;

[0042] 40. Sealed tank 1; 41. Base tube;

[0043] 42. Floating roof; 421. Vent hole; 422. Fixed ring; 423. Inserted post; 424. Plug;

[0044] 43. Rotary seat; 431. Shaft; 432. Turbine;

[0045] 44. Sliding sleeve; 441. Scraper strip;

[0046] 45. Filter disc; 451. Bending rod;

[0047] 46. ​​Bottom fastener; 47. Slag discharge pipe; 48. Electrically controlled valve;

[0048] 50. Equalizing pipe one; 51. Equalizing pipe two;

[0049] 60. Sealed tank two; 61. Bottom cylinder; 62. Drain hole;

[0050] 63. Moving part; 631. Sealing plate; 632. Upper extension post; 633. Limiting ring;

[0051] 64. Buoyancy plate;

[0052] 70. Horizontal bar; 71. Sliding component one; 72. Sliding component two;

[0053] 80. Drainage pipe;

[0054] 90. Steam pipe. Detailed Implementation

[0055] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0056] Example

[0057] like Figure 1-9 As shown, the present invention proposes a drain device for high-efficiency steam tracing pipelines, including a one-way valve 10, which is connected to a drain pan to form a one-way flow of condensate; a collection chamber 20, which is connected to the one-way valve 10 to buffer the condensate and steam supplied by the one-way valve 10; and a supply pipe 30, which is connected to the bottom of the collection chamber 20 to form a U-shaped cavity for temporarily storing condensate.

[0058] The one-way valve 10 is connected to an external steam trap. The steam pressure is used as the driving force to send condensate and some steam into the collection chamber 20 through the one-way valve 10. The collection chamber 20 can temporarily store a certain amount of condensate due to its structural design. At the same time, since the supply pipe 30 is connected to the bottom of the collection chamber 20, the condensate is introduced into the supply pipe 30 by its own gravity, and the condensate forms a U-shaped water column in the supply pipe 30.

[0059] The buffer tank unit is connected to the free end of the supply pipe 30 to receive the condensate introduced by the supply pipe 30, convert kinetic energy, concentrate and separate impurities in the condensate;

[0060] The buffer tank unit includes a capped tank 40. A base tube 41 is fixed at the bottom of the capped tank 40. A supply tube 30 is connected to the capped tank 40 and docks with the base tube 41. A floating component is slidably arranged inside the capped tank 40. The floating component includes a float 42 slidably arranged inside the capped tank 40. A vent hole 421 is provided on the float 42. A fixed ring 422 corresponding to the vent hole 421 is fixed at the bottom of the float 42. A plug 423 is inserted into the fixed ring 422 and forms a channel with the vent hole 421. A plug plate 424 is fixed at the upper end of the plug 423 to block the vent hole 421 and isolate the two sides of the float 42 when condensate impacts.

[0061] The sealing tank 40 features a removable lid, allowing it to be opened by removing the top sealing cap. Since condensate often contains impurities, and steam accompanies the condensate, scale easily forms inside the sealing tank 40. Therefore, the top cap of the sealing tank 40 can be opened to clean its inner wall. Because the supply pipe 30 connects the collecting chamber 20 to the sealing tank 40, and the bottom of the collecting chamber 20 is close to that of the sealing tank 40, it facilitates the formation of a water column within the supply pipe 30 that is lower than that of the collecting chamber 20 or the sealing tank 40. When external steam is used as the driving force, the steam flow through the supply pipe 30 is reduced, shortening the steam's path and improving steam utilization while minimizing losses.

[0062] Furthermore, when condensate is pushed into the capping tank 40 by steam through the supply pipe 30, the unstable condensate will surge out, causing waves on the liquid surface of the capping tank 40. The float 42 is hollow and has an isolation plate inside, forming a sealed cavity inside the float 42. The float 42 can be supported by buoyancy on the condensate in the capping tank 40. The insertion post 423 is connected and fixed to the blocking plate 424 to restrict the position of the blocking plate 424, ensuring that the blocking plate 424 can form a corresponding position to block the vent 421 during its movement. An opening is provided on the fixed ring 422 to ensure that the bottom and top of the float 42 can communicate with each other without the blocking plate 424 blocking the vent 421 on the upper side of the float 42.

[0063] The lower side of the floating component is fixed with a matching base tube 41 and uses the impact kinetic energy of condensate to move upward and disturb the condensate in the sealed tank 40 to form a vortex. The conversion component includes a shaft 431 fixed to the lower side of the floating plate 42 and rotatably connected to it. The lower end of the shaft 431 is fixed with a turbine 432 that is adapted to the base tube 41 and moves inside it. The condensate impacts the blades of the turbine 432 to form rotation and disturbs the water flow to form a vortex, concentrating the condensate impurities at the axis of the sealed tank 40.

[0064] When the turbine 432 is inserted into the base tube 41, the floating plate 42 and the turbine 432 form a sealing condition. With the steam pressure, the steam pushes the condensate to push the turbine 432 upward. Due to the fixed setting of the conversion component and the floating plate 42, the floating plate 42 will float and move upward when the conversion component is pushed. The turbine 432 can be divided into an upper disc part and a lower impeller part. The impeller blades cause the turbine 432 to rotate through the shaft 431 connected to the rotating seat 43 under the action of condensate and steam. Due to the setting of the impeller part of the turbine 432, the condensate in the sealed tank 40 will have a certain degree of vortex state under the action of its blade structure. As a result, the impurities in the condensate will be concentrated at the axis of the sealed tank 40 under the vortex state.

[0065] Furthermore, under prolonged use, a certain amount of impurities present in the condensate will adhere to / accumulate at the bottom of the capped tank 40. To address this, in an optional embodiment, a filter disc 45 is movably sleeved on the outside of the base tube 41. A bent rod 451, positioned on the movement path of the turbine 432, is fixed to the upper side of the filter disc 45. A bottom fastener 46, forming an annular closed cavity with the inner wall of the capped tank 40, is fixed to the inner side of the capped tank 40. The bottom fastener 46, together with the base tube 41 and the filter disc 45, forms an annular cavity for concentrating impurities in the condensate. The middle part of the shaft 431 has a multi-faceted structure, and a matching sliding sleeve 44 is movably sleeved on the shaft 431. A scraper 441, contacting the top of the bottom fastener 46, is fixed on the sliding sleeve 44.

[0066] Specifically, the bottom fastener 46, the capping tank 40, and the base tube 41 work together to form an area for concentrating impurities. The filter disc 45 has filtration characteristics that ensure water permeability and isolate impurities. The bending rod 451 is positioned on the movement path of the turbine 432. Therefore, when the turbine 432 moves to a certain height, the bending rod 451 restricts the turbine 432, causing the turbine 432 to drive the filter disc 45 upward. The turbine 432 has a multi-faceted structure in the middle. Since the shaft 431 is driven by the turbine 432, the sliding sleeve 44 will rotate, causing the scraper 441 to scrape against the top of the bottom fastener 46 to reduce scale adhesion. In addition, the condensate vortex state inside the capping tank 40 will cause impurities to fall into the annular cavity. The outer diameter of the filter disc 45 is larger than the inner diameter of the bottom fastener 46, and an annular strip is provided on the base tube 41 to support the filter disc 45.

[0067] The impurities accumulated in the capped tank 40 should be properly discharged. To this end, in an optional embodiment, the bottom of the capped tank 40 is connected to a slag discharge pipe 47, which communicates with the annular cavity to discharge the impurities inside. The free end of the slag discharge pipe 47 is connected to an electric control valve 48. By controlling the opening and closing of the electric control valve 48 and cooperating with the filtration conditions of the filter disc 45, the impurities in the annular cavity below the filter disc 45 can be guided by the slag discharge pipe 47 and discharged through the electric control valve 48.

[0068] The diversion tank unit is connected to the capped tank 40 through the stepped equalizing pipe 50 and equalizing pipe 51. The impact kinetic energy of the condensate introduced by the supply pipe 30 is used to move the floating part upward, and the power is transmitted by the bridge to assist the diversion of condensate and steam.

[0069] The diversion tank unit includes a capped tank 60 connected to equalizing pipe 50 and equalizing pipe 51. A bottom cylinder 61 connected to a drain pipe 80 is fixed to the lower side of the capped tank 60. A water flow hole 62 is opened at the bottom of the capped tank 60 and located on the upper side of the bottom cylinder 61. An adjustable float that limits the range of motion and is fixed to the bridge is slidably arranged in the water flow hole 62. The adjustable float includes a movable part 63 inserted into the water flow hole 62. A sealing plate 631 is fixed to the upper end of the movable part 63. An upper extension column 632 is fixed to the upper side of the sealing plate 631. A limiting ring 633 that limits the upward movement range of the movable part 63 is fixed to the lower end of the movable part 63 and is arranged in the bottom cylinder 61. A flow channel is left between the limiting ring 633 and the movable part 63. A buoyancy plate 64 fixed to the bridge is fixed to the upper end of the upper extension column 632.

[0070] In this embodiment, pressure equalization pipe 50 and pressure equalization pipe 51 connect capped tank 40 and capped tank 60 with a stepped drop. In this embodiment, pressure equalization pipe 51 is positioned below pressure equalization pipe 51, and pressure equalization pipe 50 is positioned above pressure equalization pipe 50. After condensate enters capped tank 40, the water level in capped tank 40 rises. Due to the pressure equalization pipe 51, the condensate enters capped tank 60 and accumulates. The function of pressure equalization pipe 50 is to maintain a similar pressure between the upper space of float plate 42 and capped tank 60. Furthermore, in this embodiment, the buoyancy plate 64 is positioned higher than the lower space. The pressure equalization pipe 51 is connected to the sealing tank 60. The buoyancy plate 64 transmits the force of the float 42 through the bridge frame. When the sealing plate 631 blocks the water hole 62, due to the pressure difference between the bottom cylinder 61 and the sealing tank 60, the impact force of steam and condensate is needed to overcome the pressure difference and prevent the sealing plate 631 from sticking to the bottom of the sealing tank 60 and blocking the water hole 62. At the same time, the buoyancy plate 64 itself is hollow. When a certain amount of water is accumulated in the sealing tank 60, the buoyancy plate 64 will also provide a certain amount of buoyancy to overcome the pressure difference because there is still water pressure in the sealing tank 60 after the water has accumulated.

[0071] Furthermore, the cross-sectional structure of the movable part 63 is set in a cross shape. When the limiting ring 633 contacts the bottom of the capped tank 60, condensate can flow continuously through the flow channel left between the limiting ring 633 and the movable part 63; the sealing plate 631 completely covers the water outlet 62.

[0072] Furthermore, in an optional embodiment, the cable tray includes a crossbar 70, on which a sliding member 71 is fixed, which moves within the first sealed tank 40 and is fixed to the floating plate 42, and a sliding member 72 is fixed within the second sealed tank 60 and is fixed to the buoyancy plate 64. The sliding member 71 and the sliding member 72 adopt similar structural designs. Specifically, the sliding member 71 includes a sleeve fixed to the first sealed tank 40 or the second sealed tank 60, and a piston structure is slidably arranged inside the sleeve. A rod fixed to the crossbar 70 is fixed at the upper end of the piston structure, and an extension rod for connecting the floating plate 42 or the buoyancy plate 64 is fixed at the lower end of the piston structure. The length of the extension rod can be set according to actual needs.

[0073] The drain pipe 80 is connected to the condensate recovery main pipe and the bottom cylinder 61 to guide the condensate and send it out by the steam pressure in the capped tank 2 60. Since the capped tank 1 40 and the capped tank 2 60 are connected, the steam pressure in the capped tank 1 40 will be close to that in the capped tank 2 60. Under its steam pressure, the condensate in the capped tank 2 60 will be sent into the recovery water main pipe by the steam pressure as the driving force. Then, it will be regenerated by steam through the external flash tank and the ejector.

[0074] Steam pipe 90 is connected to an external steam recovery pipe and is installed on the top of the sealed tank 2 60. The steam located in the sealed tank 2 60 is recovered from the top of the sealed tank 2 60.

[0075] In this embodiment, when the device is put into use, the one-way valve 10 needs to be connected to an external drain pan, the drain pipe 80 needs to be connected to the recovery main pipe, and the steam drain pipe 90 needs to be connected to the recovery steam pipe. During operation, the steam and condensate entering the device are restricted by the one-way valve 10. The condensate in the collection chamber 20 enters the supply pipe 30, and the position of the supply pipe 30 ensures that a water column exists within it. The steam pressure propels the condensate into the base pipe 41. The base pipe 41 then drives the turbine 432, which in turn drives the rotating seat 43, pushing the floating plate 42 upwards. Due to the presence of numerous steam pipes... The steam pipes are all connected to the steam trap, and the steam pressure in each pipe is different, resulting in instability in the supplied steam pressure. This instability in the condensate and steam supplied to the supply pipe 30 leads to different forces driving the turbine 432, causing condensate entering the capped tank 40 to form swells. The floating plate 42 prevents these swells by directly applying steam pressure to the floating plate 42, thus mitigating the pressure instability caused by the pressure difference when directly using steam pressure to deliver condensate to the main recovery water pipe. This also reduces the possibility of steam entering the recovery main pipe and lowers the risk of water hammer.

[0076] When the steam pressure pushes the condensate, causing the turbine 432 to move upward and detach from the base tube 41, the turbine 432 rotates due to the impact of the condensate. Consequently, the sliding sleeve 44 on the shaft 431 is also driven, causing the scraper 441 to rotate and scrape the upper side of the bottom fastener 46. Due to the structure of the turbine 432, when the turbine 432 is completely detached from the base tube 41 and under the impact of the condensate, the impacting water flow will disturb the internal condensate and form a vortex. This vortex will then collect impurities in the condensate in the middle of the capping tank 40. Since the bending rod 451 is provided on the movement path of the turbine 432, the bending rod 451 is pushed, causing the filter disc 45 to move upward. The vortex will then cause the impurities to approach the axis of the capping tank 40 and fall from the upper side of the bottom fastener 46 into the annular cavity. The impurities can be discharged through the slag discharge pipe 47 and the electric control valve 48.

[0077] Due to the unstable pressure difference, the use of the vent 421, fixed ring 422, insert 423, and plug 424 on the floating disk 42, under conditions where the vapor pressure difference is small, will cause the vent 421 to connect, and the plug 424 inside the floating disk 42 to fall onto the fixed ring 422. Since the turbine 432 is adapted to the base tube 41, during its upward movement, it will connect the upper and lower sides of the floating disk 42 through the openings of the vent 421 and fixed ring 422, thus making the pressure on the lower and upper sides of the floating disk 42 close. Furthermore, after the turbine 432 detaches from the base tube 41, it will overcome the gravity of the plug 424 and insert 423 and move upward under the action of vapor pressure and condensate, increasing the throughput of condensate or steam, and finally entering the upper side of the floating disk 42 through the vent 421. When the turbine 432... 2. When the float 42 is completely detached from the base pipe 41, it will be located above the equalizing pipe 51. Then, the steam pressure will flow into the capping tank 60 through the equalizing pipe 50 and the equalizing pipe 51. When the steam pressure surges from low pressure to high pressure, as the turbine 432 is about to detach from the base pipe 41, the surge in gas pressure, along with condensate, enters the capping tank 40. Under the action of high pressure, the pressure on the lower side of the float 42 will suddenly increase, forming a pressure that completely overcomes the insertion column 423 and the plug plate 424, forcing the plug plate 424 to seal the top of the vent 421. Thus, under the condition of a large pressure difference on both sides of the float 42, the lower side of the float 42 is not connected to the upper side of the float 42. The steam pressure needs to completely overcome the gravity of the float 42 and other structures to move upward, thereby improving the ability to balance the surge in steam pressure and maintaining a relatively stable steam pressure.

[0078] As the floating plate 42 moves upward, the buoyancy plate 64 moves upward due to the transmission capabilities of the sliding member 71, the crossbar 70, and the sliding member 72. During the upward movement of the buoyancy plate 64, the back pressure provided by the steam pressure causes the sealing plate 631 connected to the lower end of the buoyancy plate 64 by the limiting ring 633 to open over the pressure difference between the bottom cylinder 61 and the capping tank 60, as well as the weight of its multiple components. Water that enters the capping tank 60 from the capping tank 40 through the steam pressure will enter the bottom cylinder 61 through the water outlet 62 and enter the drain pipe 80 through the flow channel formed by the connection between the limiting ring 633 and the moving member 63. The steam drain pipe 90 also introduces steam into the steam recovery pipe.

[0079] The above specific embodiments are merely preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A drain device for high-efficiency steam tracing pipelines, characterized in that, include: One-way valve (10), whose external drain pan causes condensate to flow in one direction; A collection chamber (20) is connected to a check valve (10) to buffer the condensate and steam supplied by the check valve (10); The supply pipe (30) is connected to the bottom of the collection tank (20) to form a U-shaped cavity for temporary storage of condensate; The buffer tank unit is connected to the free end of the supply pipe (30) to receive the condensate introduced by the supply pipe (30) and convert kinetic energy to concentrate and separate the condensate impurities; The buffer tank unit includes a capped tank (40), a base tube (41) is fixed at the bottom of the capped tank (40), the supply tube (30) is connected to the capped tank (40) and docked with the base tube (41), a floating component is slidably arranged inside the capped tank (40), and a conversion component is fixed on the lower side of the floating component to cooperate with the base tube (41) and use the impact kinetic energy of condensate to move upward and disturb the condensate in the capped tank (40) to form a vortex. The vortex concentrates the impurities in the condensate at the axis of the capped tank (40). The diversion tank unit is connected to the capping tank (40) through the stepped pressure equalization pipe one (50) and pressure equalization pipe two (51) to use the impact kinetic energy of the condensate introduced by the supply pipe (30) to move the floating part upward, and the power is transmitted by the bridge to assist the diversion of condensate and steam. The drain pipe (80) is connected to the external condensate recovery main pipe and the distribution tank unit to divert condensate and send it out by the steam pressure in the distribution tank; Steam pipe (90) is connected to an external steam recovery pipe and is located at the top of the distribution tank unit; The diversion tank unit includes a capped tank two (60) connected to a pressure equalization pipe one (50) and a pressure equalization pipe two (51). The bottom cylinder (61) connected to the drain pipe (80) is fixed on the lower side of the capped tank two (60). A water flow hole (62) located on the upper side of the bottom cylinder (61) is opened at the bottom of the capped tank two (60). An adjustable float that limits the range of motion and is fixed to the bridge is slidably arranged in the water flow hole (62). The regulating float includes a movable part (63) inserted into the water flow hole (62). A sealing plate (631) is fixed to the upper end of the movable part (63). An upper extension column (632) is fixed to the upper side of the sealing plate (631). A limiting ring (633) is fixed to the lower end of the movable part (63) and is disposed in the bottom cylinder (61) to limit the upward movement range of the movable part (63). A flow channel is left between the limiting ring (633) and the movable part (63). A buoyancy plate (64) fixed to the bridge is fixed to the upper end of the upper extension column (632).

2. The drain device for high-efficiency steam tracing pipelines according to claim 1, characterized in that: The floating component includes a floating plate (42) that is slidably disposed in a sealed tank (40). The floating plate (42) is provided with a through vent hole (421). A fixed ring (422) corresponding to the vent hole (421) is fixed at the bottom of the floating plate (42). A plug (423) is inserted into the fixed ring (422) and forms a channel with the vent hole (421). A plug plate (424) is fixed at the upper end of the plug (423) to block the vent hole (421) and isolate the two sides of the floating plate (42) when condensate impacts.

3. A drain device for high-efficiency steam tracing pipelines according to claim 2, characterized in that: The conversion component includes a shaft (431) fixed to the lower side of the floating plate (42) and rotatably connected to it. The lower end of the shaft (431) is fixed with a turbine (432) that is adapted to the base tube (41) and moves therein, so that the condensed water impacts the turbine (432) blades to form rotation and create vortices that turbulent the water flow.

4. A drain device for high-efficiency steam tracing pipelines according to claim 3, characterized in that: A filter disc (45) is movably sleeved on the outside of the base tube (41). A bent rod (451) is fixed on the upper side of the filter disc (45) and is set on the movement path of the turbine (432). A bottom fastener (46) is fixed on the inner side of the capping tank (40) and forms an annular closed cavity with the inner wall of the capping tank (40). The bottom fastener (46) and the base tube (41) cooperate with the filter disc (45) to cover and form an annular cavity for concentrating condensate impurities.

5. A drain device for high-efficiency steam tracing pipelines according to claim 4, characterized in that: The middle part of the shaft (431) has a multi-faceted structure, and a matching sliding sleeve (44) is movably sleeved on the shaft (431). A scraper (441) that contacts the top of the bottom fastener (46) is fixed on the sliding sleeve (44).

6. A drain device for high-efficiency steam tracing pipelines according to claim 4, characterized in that: The bottom of the sealed tank (40) is connected to a slag discharge pipe (47), which is connected to the annular cavity for discharging impurities. The free end of the slag discharge pipe (47) is connected to an electric control valve (48).

7. A drain device for high-efficiency steam tracing pipelines according to claim 1, characterized in that: The bridge includes a crossbar (70), on which a sliding member (71) is fixed, which moves within the first sealed tank (40) and is fixed to the floating plate (42), and a sliding member (72) moves within the second sealed tank (60) and is fixed to the buoyancy plate (64).

8. A drain device for high-efficiency steam tracing pipelines according to claim 1, characterized in that: The steam pipe (90) is fixed on the upper side of the capped tank (60).

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