Vapor-liquid separation device for steam condensation water
By designing a vapor-liquid separation device for the boiler condensate recovery system, the pipeline water hit problem caused by flash evaporation during the conveying process is solved, and the pipeline pressure stability and equipment safety effects are achieved.
Patent Information
- Application Number
- CN202421118400.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-21
AI Technical Summary
During the operation of the boiler, the condensate may flash evaporate due to changes in temperature and pressure during the conveying process, resulting in vapor and liquid mixing, causing water hit in the pipeline, causing damage or deformation.
Design a steam-liquid separation device for steam condensate water, including a steam-liquid chamber, a steam-liquid chamber, a steam-liquid separation valve and a steam vent valve. The floating switch controls the on-off between the steam and liquid chamber and the steam chamber, and achieves the separation of the steam and liquid, and discharges steam through the steam discharge valve.
Effectively separate condensate from steam, maintain stable pipeline pressure, eliminate water shock and avoid damage or deformation of pipelines.
Smart Images
Figure CN222437892U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vapor-liquid separation, in particular to a vapor-liquid separation device for steam condensed water. Background Art
[0002] In order to improve the quality of boiler soft water and reduce boiler energy consumption during boiler operation, it is often necessary to recycle the condensate after steam heat exchange. The condensate is transported to a designated location for recycling through a condensate pump. During the transportation process, the temperature and pressure of the condensate will change, causing some high-temperature condensate to flash and generate steam. The mixture of steam and liquid will cause water hammer in the pipeline, causing damage or deformation of the pipeline.
[0003] The utility model aims to provide a device capable of realizing steam-liquid separation of steam condensate, so as to separate the condensate from the generated steam, thereby maintaining the stability of pipeline pressure and eliminating pipeline water hammer vibration. Utility Model Content
[0004] The utility model provides a steam-liquid separation device for steam condensate, which is used for separating condensate from generated steam, thereby maintaining stable pipeline pressure and eliminating pipeline water hammer vibration.
[0005] The utility model provides a steam-liquid separation device for steam condensate, comprising a steam-liquid chamber for accommodating a steam-liquid mixed medium, a steam chamber connected to the steam-liquid chamber, a steam-liquid separation valve connected between the steam-liquid chamber and the steam chamber and controlling the on-off between the two, and a steam release valve connected to the steam chamber;
[0006] The vapor-liquid separation valve includes a floating switch located in the vapor-liquid chamber, and the floating switch is used to adaptively open or close according to the liquid level change of the vapor-liquid mixed medium in the vapor-liquid chamber to realize the connection and disconnection between the vapor-liquid chamber and the steam chamber. When the vapor-liquid chamber is connected to the steam chamber, the steam separated from the vapor-liquid chamber can be discharged into the steam chamber;
[0007] When the steam release valve is opened, the steam in the steam chamber can be discharged to the outside.
[0008] Optionally, the vapor-liquid separation valve has a first steam inlet communicating with the vapor-liquid chamber, and a first steam outlet communicating with the steam chamber;
[0009] The floating switch includes a float ball that floats on the steam-liquid mixed medium in the steam-liquid chamber and can float up and down according to the liquid level height. The outer wall of the float ball is adapted to the first steam inlet. When the float ball floats up and down, the first steam inlet can be blocked or opened, thereby realizing the connection and disconnection between the steam-liquid chamber and the steam chamber.
[0010] Optionally, the first steam inlet of the vapor-liquid separation valve is higher than the inlet of the vapor-liquid chamber; and the inlet of the vapor-liquid chamber is higher than the outlet.
[0011] Optionally, the float switch further comprises:
[0012] The limit assembly is arranged on one side of the steam-liquid separation valve close to the first steam inlet, and is used to limit the floating ball floating up and down between the highest position and the lowest position.
[0013] Optionally, the limit assembly includes a first limit member and a second limit member respectively arranged on the upper and lower sides of the float; wherein,
[0014] The first limiter is higher than the first steam inlet and lower than the first steam outlet. When the float rises to a preset highest position along with the liquid level change, the float can stop on the first limiter to limit the float from continuing to float up.
[0015] The second limiter is higher than the outlet and lower than the inlet of the vapor-liquid chamber. When the float drops to a preset lowest position as the liquid level changes, the float can stop on the second limiter to limit the float from continuing to drop.
[0016] Optionally, the steam release valve has a second steam inlet communicated with the steam chamber, and a second steam outlet communicated with the outside; the steam release valve comprises:
[0017] A heat sensing element is arranged in the valve body of the steam relief valve, and the heat sensing element expands when heated and contracts when cooled;
[0018] The telescopic rod has one end connected to the thermal sensing element and the other end connected to the valve cover. The telescopic rod is suitable for driving the telescopic rod to move up and down under the expansion and contraction deformation of the thermal sensing element to drive the valve cover to open or block the second steam outlet.
[0019] Further, the second steam inlet is located in the steam chamber;
[0020] The second steam outlet is located outside the steam chamber.
[0021] Optionally, the steam chamber has a condensate discharge port for discharging condensed water.
[0022] Optionally, the steam chamber is arranged above the steam-liquid chamber.
[0023] Compared with the prior art, the advantages of the utility model are:
[0024] 1. In the embodiment of the utility model, after the vapor-liquid mixed medium in the condensate pipeline enters the vapor-liquid chamber, the vapor-liquid mixed medium may flash evaporate in the vapor-liquid chamber to generate steam due to pressure changes, and the condensate separated from the steam in the vapor-liquid mixed medium may be discharged from the outflow port of the vapor-liquid chamber for recycling and reuse; the steam separated from the vapor-liquid mixed medium is discharged into the steam chamber through the vapor-liquid separation valve in the open state, and the steam in the steam chamber may be discharged to the outside when the steam discharge valve is opened.
[0025] In the embodiment of the utility model, the vapor-liquid separation device of the steam condensate can be connected and arranged on the condensate recovery and transportation pipeline of the boiler to separate the vapor and liquid of the condensate to be transported, so as to avoid the flash evaporation of the condensate in the transportation pipeline to produce steam, thereby eliminating the water hammer vibration of the pipeline, maintaining the stability of the pipeline pressure, and effectively avoiding the damage or deformation of the transportation pipeline.
[0026] 2. In the embodiment of the utility model, the steam separation principle of the steam-liquid chamber is as follows:
[0027] Condensate containing steam enters the vapor-liquid chamber from the inlet, and the condensate can be discharged from the outlet while the steam stays in the vapor-liquid chamber. As the condensate is discharged, the space it occupies in the vapor-liquid chamber becomes less, the liquid level begins to drop, and the steam gradually gathers and increases in the vapor-liquid chamber. The float opens the first steam inlet as the liquid level drops, so that the vapor-liquid chamber is connected to the steam chamber. At this time, the steam can enter the steam chamber through the first steam inlet and the first steam outlet at one time. After the steam in the vapor-liquid chamber is completely discharged into the steam chamber, the steam in the vapor-liquid chamber becomes less, and the condensate content continues to increase, causing the liquid level to rise and drive the float to move upward, and the float can close the first steam inlet. In this way, the vapor-liquid separation valve can be driven to work by the space ratio of steam and condensate in the vapor-liquid chamber and the liquid level height.
[0028] 3. In the embodiment of the utility model, the principle of steam discharge from the steam chamber is as follows:
[0029] After the steam enters the steam chamber, the temperature of the steam chamber increases, the volume of the thermal sensing element expands, and the telescopic rod moves upward, so as to drive the valve cover to move upward to open the second steam outlet, and the steam is discharged from the second steam outlet to the outside atmosphere. When the steam in the steam chamber is discharged, the temperature of the steam chamber drops, the thermal sensing element contracts, and the telescopic rod moves downward, so that the valve cover moves downward to block the second steam outlet. The steam relief valve can be opened or closed as the temperature in the steam chamber changes. The temperature increase or decrease requires a slow accumulation process. Therefore, the steam relief valve can be opened or closed slowly, so that the pressure in the condensate pipeline can be kept stable when the steam chamber discharges steam to the outside. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.
[0031] Figure 1 It is a structural schematic diagram of a vapor-liquid separation device for steam condensate;
[0032] Reference numerals:
[0033] 1. Vapor-liquid chamber; 11. Inlet; 12. Outlet;
[0034] 2. Steam chamber; 21. Condensate outlet;
[0035] 3. Steam-liquid separation valve; 31. First steam inlet; 32. First steam outlet; 33. Float; 34. Limiting assembly;
[0036] 4. Steam release valve; 41. Second steam inlet; 42. Second steam outlet; 43. Valve body; 44. Thermal sensing element; 45. Telescopic rod; 46. Valve cover. DETAILED DESCRIPTION
[0037] The utility model will be further described below in conjunction with the accompanying drawings.
[0038] The utility model provides a steam-liquid separation device for steam condensate, comprising a steam-liquid chamber 1, a steam chamber 2, a steam-liquid separation valve 3 and a steam release valve 4.
[0039] Specifically, the vapor-liquid chamber 1 is used to contain a vapor-liquid mixed medium, and the vapor-liquid chamber 1 has an inlet 11 and an outlet 12; high-temperature and high-pressure condensed water flows into the vapor-liquid chamber 1 from the inlet 11, and when the vapor-liquid separation valve 3 is opened, the vapor-liquid chamber 1 and the steam chamber 2 are connected and disconnected with each other, and the steam separated from the vapor-liquid chamber 1 can be discharged into the steam chamber 2, thereby achieving vapor-liquid separation. Optionally, the vapor-liquid mixed medium is generally formed by a mixture of condensed water and steam, and the outlet 12 is connected to the condensed water return port on the boiler pipeline, so that the condensed water after vapor-liquid separation can be recycled to the boiler pipeline for reuse.
[0040] The steam chamber 2 is connected to the steam-liquid chamber 1, and the steam chamber 2 is used to contain the steam separated from the steam-liquid chamber 1. Optionally, the steam chamber 2 is arranged above the steam-liquid chamber 1.
[0041] The vapor-liquid separation valve 3 is connected between the vapor-liquid chamber 1 and the steam chamber 2 and is used to control the connection and disconnection between the two. The vapor-liquid separation valve 3 includes a floating switch located in the vapor-liquid chamber 1. The floating switch is used to adaptively open or close according to the liquid level change of the vapor-liquid mixed medium in the vapor-liquid chamber 1, so as to achieve the connection or isolation between the vapor-liquid chamber 1 and the steam chamber 2. Optionally, the vapor-liquid separation valve 3 has a first steam inlet 31 connected to the vapor-liquid chamber 1, and a first steam outlet 32 connected to the steam chamber 2; the floating switch includes a floating ball 33 floating on the vapor-liquid mixed medium in the vapor-liquid chamber 1 and can float up and down according to the liquid level height. The outer wall of the floating ball 33 is adapted to the first steam inlet 31. When the floating ball 33 floats up and down, the first steam inlet 31 can be blocked or opened, thereby achieving the connection and disconnection between the vapor-liquid chamber 1 and the steam chamber 2. Optionally, the first steam inlet 31 of the vapor-liquid separation valve 3 is higher than the inlet 11 of the vapor-liquid chamber 1; the inlet 11 of the vapor-liquid chamber 1 is higher than the outlet 12.
[0042] The steam release valve 4 is connected to the steam chamber 2, and when the steam release valve 4 is opened, the steam in the steam chamber 2 can be discharged to the outside.
[0043] In the embodiment of the utility model, after the vapor-liquid mixed medium in the condensate pipeline enters the vapor-liquid chamber 1, the vapor-liquid mixed medium may flash evaporate in the vapor-liquid chamber 1 to generate steam due to pressure changes, and the condensate separated from the vapor-liquid mixed medium may be discharged from the outflow port 12 of the vapor-liquid chamber 1 for recycling and reuse; the steam separated from the vapor-liquid mixed medium is discharged into the steam chamber 2 through the vapor-liquid separation valve 3 in the open state, and the steam in the steam chamber 2 may be discharged to the outside when the steam discharge valve 4 is opened. In the embodiment of the utility model, the vapor-liquid separation device of the steam condensate can be connected and arranged on the condensate recovery and transportation pipeline of the boiler, and the vapor-liquid separation is performed on the condensate to be transported to prevent the condensate from flashing and generating steam on the transportation pipeline, thereby eliminating the pipeline water hammer vibration, maintaining the pipeline pressure stable, and effectively preventing the transportation pipeline from being damaged or deformed.
[0044] In the embodiment of the utility model, the steam separation principle of the steam-liquid chamber 1 is as follows:
[0045] Condensate containing steam enters the steam-liquid chamber 1 from the inlet 11, and the condensate can be discharged from the outlet 12 while the steam stays in the steam-liquid chamber 1. As the condensate is discharged, the space it occupies in the steam-liquid chamber 1 becomes less, the liquid level begins to drop, and the steam gradually gathers and increases in the steam-liquid chamber 1. The float 33 drops with the liquid level and opens the first steam inlet 31, so that the steam-liquid chamber 1 is connected with the steam chamber 2. At this time, the steam can enter the steam chamber 2 through the first steam inlet 31 and the first steam outlet 32 at one time. After the steam in the steam-liquid chamber 1 is completely discharged to the steam chamber 2, the steam in the steam-liquid chamber 1 becomes less, and the condensate content continues to increase, so that the liquid level rises and drives the float 33 to move upward, and the float 33 can close the first steam inlet 31. In this way, the steam-liquid separation valve 3 can be driven to work by the space ratio of steam and condensate in the steam-liquid chamber 1 and the liquid level height.
[0046] Optionally, the float switch further includes a limit assembly 34, which is arranged on one side of the vapor-liquid separation valve 3 near the first steam inlet 31, and is used to limit the floating ball 33 floating up and down between the highest position and the lowest position. Preferably, the limit assembly 34 includes a first limit piece and a second limit piece respectively arranged on the upper and lower sides of the float 33; wherein the first limit piece is higher than the first steam inlet 31 and lower than the first steam outlet 32, and when the float 33 rises to a preset highest position with the liquid level change, the float 33 can stop on the first limit piece to limit the float 33 from continuing to float; the second limit piece is higher than the outflow port 12 of the vapor-liquid chamber 1 and lower than the inflow port 11, and when the float 33 drops to a preset lowest position when the float 33 drops to the preset lowest position, the float 33 can stop on the second limit piece to limit the float 33 from continuing to drop. The longitudinal interval between the first limit piece and the second limit piece is greater than the length of the float 33.
[0047] Optionally, the steam relief valve 4 includes a valve body 43, which has a second steam inlet 41 connected to the steam chamber 2 and a second steam outlet 42 connected to the outside; the steam relief valve 4 also includes a thermal sensing element 44, a telescopic rod 45 and a valve cover 46. Specifically, the thermal sensing element 44 is arranged in the valve body 43 of the steam relief valve 4 and can expand when heated and contract when cooled; one end of the telescopic rod 45 is connected to the thermal sensing element 44, and the other end is connected to the valve cover 46, and the telescopic rod 45 is suitable for driving the telescopic rod 45 to move up and down under the expansion and contraction deformation of the thermal sensing element 44, so as to drive the valve cover 46 to open or block the second steam outlet 42. Preferably, the second steam inlet 41 is located in the steam chamber 2; the second steam outlet 42 is located outside the steam chamber 2.
[0048] In the embodiment of the utility model, the principle of steam discharge of the steam chamber 2 is as follows:
[0049] After the steam enters the steam chamber 2, the temperature of the steam chamber 2 increases, the volume of the thermal sensing element 44 expands, and the telescopic rod 45 moves upward, so as to drive the valve cover 46 to move upward to open the second steam outlet 42, and the steam is discharged to the outside atmosphere from the second steam outlet 42. When the steam in the steam chamber 2 is discharged, the temperature of the steam chamber 2 drops, the thermal sensing element 44 contracts, and drives the telescopic rod 45 to move downward, so that the valve cover 46 moves downward to block the second steam outlet 42. The steam discharge valve 4 can be opened or closed with the temperature change in the steam chamber 2. The temperature increase or decrease requires a slow accumulation process, so the steam discharge valve 4 can be slowly opened or closed, so that the pressure in the condensate pipeline can be ensured to be stable when the steam chamber 2 discharges steam to the outside.
[0050] Optionally, a condensate discharge port 21 for discharging condensed water is provided on the steam chamber 2. When condensed water exists in the steam chamber 2, the condensed water can be discharged through the condensate discharge port 21 thereon, so that the condensed water can be recycled and reused, and the work of the thermal sensing element 44 can be prevented from being affected by the accumulation of condensed water.
[0051] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A steam-liquid separation device for steam condensate, characterized in that: The invention comprises a vapor-liquid chamber (1) for containing a vapor-liquid mixed medium, a steam chamber (2) connected to the vapor-liquid chamber (1), a vapor-liquid separation valve (3) connected between the vapor-liquid chamber (1) and the steam chamber (2) and controlling the on-off between the two, and a steam release valve (4) connected to the steam chamber (2); The vapor-liquid separation valve (3) comprises a floating switch located in the vapor-liquid chamber (1), and the floating switch is used to adaptively open or close according to the change of the liquid level of the vapor-liquid mixed medium in the vapor-liquid chamber (1), so as to realize the connection and disconnection between the vapor-liquid chamber (1) and the steam chamber (2). When the vapor-liquid chamber (1) is connected with the steam chamber (2), the vapor separated from the vapor-liquid chamber (1) can be discharged into the steam chamber (2); When the steam discharge valve (4) is opened, the steam in the steam chamber (2) can be discharged to the outside.
2. The steam-condensate vapor-liquid separation device according to claim 1, characterized in that: The vapor-liquid separation valve (3) has a first vapor inlet (31) connected to the vapor-liquid chamber (1), and a first vapor outlet (32) connected to the vapor chamber (2); The floating switch comprises a float ball (33) which floats on a gas-liquid mixed medium in a gas-liquid chamber (1) and can float up and down according to the liquid level height. The outer wall of the float ball (33) is adapted to the first steam inlet (31). When the float ball (33) floats up and down, the first steam inlet (31) can be blocked or opened, thereby realizing the connection and disconnection between the gas-liquid chamber (1) and the steam chamber (2).
3. The steam-liquid separation device of steam condensate according to claim 2, characterized in that: The first steam inlet (31) of the vapor-liquid separation valve (3) is higher than the inlet (11) of the vapor-liquid chamber (1); and the inlet (11) of the vapor-liquid chamber (1) is higher than the outlet (12).
4. The steam-liquid separation device of steam condensate according to claim 2, characterized in that: The float switch also includes: The limit assembly (34) is arranged on a side of the vapor-liquid separation valve (3) close to the first steam inlet (31) and is used to limit the floating ball (33) floating up and down between the highest position and the lowest position.
5. The steam-condensate vapor-liquid separation device according to claim 4, characterized in that: The limiting assembly (34) comprises a first limiting member and a second limiting member respectively arranged on the upper and lower sides of the floating ball (33); wherein: The first limiter is higher than the first steam inlet (31) and lower than the first steam outlet (32); when the float (33) rises to a preset highest position along with the liquid level change, the float (33) can stop against the first limiter to limit the float (33) from continuing to float upward; The second limiting member is higher than the outflow port (12) of the vapor-liquid chamber (1) and lower than the inflow port (11); when the float (33) descends with the change of the liquid level, when the float (33) descends to a preset lowest position, the float (33) can stop on the second limiting member to limit the float (33) from continuing to descend.
6. The steam-condensate vapor-liquid separation device according to any one of claims 1 to 4, characterized in that: The steam release valve (4) has a second steam inlet (41) connected to the steam chamber (2), and a second steam outlet (42) connected to the outside; the steam release valve (4) comprises: A heat sensing element (44) is arranged in a valve body (43) of the steam release valve (4), and the heat sensing element (44) expands when heated and contracts when cooled; The telescopic rod (45) has one end connected to the heat sensing element (44) and the other end connected to the valve cover (46). The telescopic rod (45) is suitable for driving the telescopic rod (45) to move up and down when the heat sensing element (44) expands and contracts, so as to drive the valve cover (46) to open or block the second steam outlet (42).
7. The steam-liquid separation device of steam condensate according to claim 6, characterized in that: The second steam inlet (41) is located in the steam chamber (2); The second steam outlet (42) is located outside the steam chamber (2).
8. The steam-condensate vapor-liquid separation device according to claim 1, characterized in that: The steam chamber (2) is provided with a condensate discharge port (21) for discharging condensed water.
9. The steam-condensate vapor-liquid separation device according to claim 1, characterized in that: The steam chamber (2) is arranged above the steam-liquid chamber (1).