Resin anti-leakage device for condensate polishing equipment of thermal power plant
By designing a resin leakage prevention device in the condensate polishing equipment of thermal power plants, and using light refraction to monitor resin leakage and automatically adjust the valve opening, the problem of resin leakage during water filling and mixing operations was solved, achieving effective protection of the resin and normal operation of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-07
AI Technical Summary
In the condensate polishing equipment of thermal power plants, resin is prone to leakage during the water filling and mixing process, resulting in resin waste and equipment contamination, which is difficult to prevent effectively with existing technology.
Design a resin leakage prevention device that uses the principle of light refraction to monitor resin leakage through a resin leakage monitoring tube, and uses an automatic control system to adjust the opening of the drain valve and the water and air inlet valves to prevent resin leakage.
It effectively prevents resin leakage, reduces resin waste, avoids equipment contamination, and ensures continuous operation and normal equipment operation.
Smart Images
Figure CN224091633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of operation technology of condensate polishing equipment in thermal power plants, and in particular to a resin leakage prevention device for condensate polishing equipment in thermal power plants, used to prevent resin leakage during the water filling process of condensate polishing equipment in thermal power plants. Background Technology
[0002] With the continuous increase in the capacity and parameters of thermal power plant units, higher requirements are being placed on the quality of steam and water. The steam and water quality during unit operation mainly relies on the condensate polishing process to optimize water quality. Condensate polishing employs ion exchange treatment, utilizing anion and cation exchange resins to remove impurities from the condensate. After the resin in the condensate polishing unit becomes ineffective, it is usually regenerated externally. The regenerated resin is then returned to the polishing equipment. The process of outputting the failed resin and returning the regenerated resin involves multiple steps requiring water and air intake. This typically requires opening the vent valve of the condensate polishing equipment. For example, after the resin is returned to the polishing equipment, a mixing operation is needed to ensure uniform mixing of the anion and cation exchange resins. During this mixing operation, if the air intake pressure is not properly adjusted or the water level in the polishing equipment is too high, resin can easily leak from the drain pipe. Similarly, during the full-water operation of the polishing equipment, even with the minimum water flow rate, the high fluidity of the resin can easily cause it to leak from the top drain valve, resulting in resin waste. To prevent resin leakage, a small flow rate (5-10t / h) is usually used to fill the resin with water on site. However, if the filling time is too long, it can easily lead to the problem of not being able to detect the filling in time. Utility Model Content
[0003] The purpose of this invention is to provide a resin leakage prevention device for condensate polishing equipment in thermal power plants. This device overcomes the common problem of resin leakage, which is that water carries the resin. By utilizing this characteristic, the device monitors resin leakage from the exhaust pipe during the operation of the polishing equipment through light refraction, thereby preventing resin leakage from the condensate polishing equipment in thermal power plants.
[0004] This utility model provides a resin leakage prevention device for condensate polishing equipment in thermal power plants, comprising:
[0005] An exhaust pipe (1) and a resin leakage monitoring pipe (2) installed on the exhaust pipe (1); wherein the exhaust pipe (1) is vertically installed on one side of the top of the condensate polishing equipment, the diameter of the resin leakage monitoring pipe (2) is larger than the diameter of the exhaust pipe (1), and the bottom (15) of the resin leakage monitoring pipe (2) has a certain inclination, the outlet of the resin leakage monitoring pipe (2) is connected to the inlet of the vent valve (3) installed on the exhaust pipe (1), and the outlet of the vent valve (3) is connected to the top opening of the condensate polishing equipment; the inlet of the resin leakage monitoring pipe (2) is connected to the wastewater tank through a leakage pipe.
[0006] Preferably, the diameter of the resin leakage monitoring tube (2) is greater than the diameter of the exhaust pipe (1), including the diameter of the resin leakage monitoring tube (2) being 2-3 times the diameter of the exhaust pipe (1).
[0007] Preferably, the bottom (15) of the resin leakage monitoring tube has a certain inclination, including the bottom (15) of the resin leakage monitoring tube having a certain inclination, maintaining an inclination of 5°-10° with respect to the horizontal plane.
[0008] Preferably, a water inlet valve (6) is also vertically installed on the top of the condensate polishing equipment.
[0009] Preferably, a drain pipe is provided at the bottom of the condensate polishing equipment, and a resin trap (8) is provided on the drain pipe. The outlet of the resin trap (8) is provided with a water outlet valve (7) and a wastewater pipeline passing through the wastewater pool.
[0010] Preferably, the inlet of the resin trap (8) is connected to a tap water inlet pipe, and a bottom water inlet valve (4) is connected to the tap water inlet pipe. A bottom air inlet valve (5) is provided as a bypass between the bottom water inlet valve (4) and the inlet passage of the resin trap (8). The bottom air inlet valve (5) is connected to a compressed air source.
[0011] Preferably, a grease inlet valve (10) is provided on one side of the condensate polishing equipment, and the grease inlet valve (10) is connected to the inlet of the bottom water inlet valve (4) through a pipeline with a top water filling valve (9).
[0012] Preferably, the resin leakage monitoring tube (2) includes a tube wall (11) made of transparent resin material and a measuring device disposed at the bottom (15) of the resin leakage monitoring tube; the measuring device consists of a pair of measuring device transmitters (12) and measuring device receivers (13) disposed opposite to each other on the outside of the tube wall (11) and a processor (14).
[0013] Preferably, one or more of the drain valve (3), bottom water inlet valve (4) and bottom air inlet valve (5) of the condensate polishing equipment are further provided with corresponding operation control systems. The processor (14) is connected to the operation control system. When the resin leakage is detected, it automatically closes one or more of the drain valve (3), bottom water inlet valve (4) and bottom air inlet valve (5).
[0014] Preferably, the condensate polishing equipment further includes an automatic calibrator connected to the measuring instrument for automatically calibrating the measuring instrument.
[0015] The resin leakage device of this utility model for condensate polishing equipment in thermal power plants has the following beneficial effects:
[0016] This method overcomes the common problem of resin leakage, which is the fundamental principle that water carries the resin. Utilizing this characteristic, it monitors resin leakage from the exhaust pipe during the operation of the condensate polishing equipment through light refraction. Based on the linkage with any one or more of the vent valve, bottom water inlet valve, and bottom air inlet valve, and according to the position set by the operation control system, the opening of any one or more of these valves is gradually reduced by 25%, thereby preventing resin leakage and thus preventing resin leakage in the condensate polishing equipment of thermal power plants. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 A schematic diagram of the resin anti-resin leakage device for condensate polishing equipment in thermal power plants provided in this embodiment of the utility model.
[0019] Figure 2 A schematic diagram of the resin leakage monitoring tube provided in an embodiment of this utility model. Detailed Implementation
[0020] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] See Figure 1 This embodiment provides a resin leakage prevention device for condensate polishing equipment in thermal power plants, comprising:
[0024] The equipment includes an exhaust pipe 1 and a resin leakage monitoring pipe 2 installed on the exhaust pipe 1. The exhaust pipe 1 is vertically installed on one side of the top of the condensate polishing equipment. The diameter of the resin leakage monitoring pipe 2 is larger than that of the exhaust pipe 1, and the bottom 15 of the resin leakage monitoring pipe 2 has a certain inclination. The outlet of the resin leakage monitoring pipe 2 is connected to the inlet of the vent valve 3 installed on the exhaust pipe 1. The outlet of the vent valve 3 is connected to the top opening of the condensate polishing equipment. The inlet of the resin leakage monitoring pipe 2 is connected to the wastewater tank through a leakage pipe to prevent the resin from flowing out through the resin leakage monitoring pipe 2 and causing pollution.
[0025] In a preferred embodiment, the diameter of the resin leakage monitoring tube 2 is larger than the diameter of the exhaust pipe 1, including a diameter of the resin leakage monitoring tube 2 being 2-3 times the diameter of the exhaust pipe 1.
[0026] In a preferred embodiment, the bottom 15 of the resin leakage monitoring tube has a certain inclination, including a 5°-10° inclination relative to the horizontal plane.
[0027] In a preferred embodiment, a water inlet valve 6 is also vertically installed on the top of the condensate polishing equipment.
[0028] The bottom of the condensate polishing equipment is equipped with a drain pipe, and a resin trap 8 is installed on the drain pipe. The outlet of the resin trap 8 is equipped with a water outlet valve 7 and a wastewater pipeline that passes through the wastewater pool.
[0029] The inlet of the resin trap 8 is connected to a tap water inlet pipe, and a bottom water inlet valve 4 is connected to the tap water inlet pipe. A bottom air inlet valve 5 is provided as a bypass between the bottom water inlet valve 4 and the inlet passage of the resin trap 8. The bottom air inlet valve 5 is connected to a compressed air source.
[0030] In a preferred embodiment, a grease inlet gate 10 is provided on one side of the condensate polishing equipment, and the grease inlet gate 10 is connected to the inlet of the bottom water inlet valve 4 through a pipeline with a top water filling valve 9.
[0031] In the operation of the condensate polishing device of this embodiment, such as during water filling and mixing steps, if normal venting is performed, air is discharged normally through the resin leakage monitoring pipe 2. If the air carries moisture or the moisture carries resin, the air, moisture, and resin separate within the resin leakage monitoring pipe 2, and the moisture accumulates at the bottom of the resin leakage monitoring pipe 2. The bottom of the resin leakage monitoring pipe is maintained at a slight inclination to ensure that the resin and moisture flow back into the polishing device. At the same time, when the amount carried is small, the resin and water can return to the polishing equipment, preventing resin leakage and not affecting the operation of the polishing equipment.
[0032] like Figure 2 As shown, in a preferred embodiment, the resin leakage monitoring tube 2 includes a tube wall 11 made of transparent resin material and a measuring device disposed at the bottom 15 of the resin leakage monitoring tube; the measuring device consists of a pair of measuring device transmitters 12 and measuring device receivers 13 disposed opposite to each other on the outside of the tube wall 11 and a processor 14; due to the different light transmittance of air and water, the processor 14 analyzes and processes the signal changes between the measuring device transmitters 12 and the measuring device receivers 13 to determine whether resin leakage has occurred during the operation of the condensate polishing equipment.
[0033] In a preferred embodiment, the condensate polishing equipment is further provided with a corresponding operation control system at any one or more of the following positions: the drain valve 3, the bottom water inlet valve 4, and the bottom air inlet valve 5. The processor 14 is connected to the operation control system and automatically closes any one or more of the following positions when resin leakage is detected: the drain valve 3, the bottom water inlet valve 4, and the bottom air inlet valve 5.
[0034] In a preferred embodiment, the condensate polishing equipment further includes an automatic calibrator connected to the measuring instrument for automatically calibrating the measuring instrument.
[0035] In this embodiment, when the time interval between the operation of the drain valve 3 and the bottom water inlet valve 4 exceeds 240 hours, when the drain valve 3 and the bottom water inlet valve 4 operate for the first time, the measuring instrument is automatically calibrated. The automatic calibration is based on the current absorbance value to compensate for the measurement error caused by the long service time and / or slight dirt on the wall of the monitoring tube 11 due to resin leakage, thereby affecting the accuracy of the analysis.
[0036] Working principle and application examples
[0037] For resin mixing in condensate polishing equipment, open the vent valve 3 and bottom air inlet valve 5 of the condensate polishing equipment, and control the appropriate compressed air pressure to ensure thorough mixing of the anion and cation resins. When the compressed air pressure is high or the water level in the condensate polishing equipment is high, the resin mixing is violent, and the water carrying the resin is discharged into the ditch through the vent valve 3 along with the compressed air, and then discharged into the wastewater tank.
[0038] When compressed air carrying water and resin enters the resin leakage monitoring pipe 2, the pressure decreases due to pressure changes, causing the water and resin to settle at the bottom 15 of the pipe. The compressed air is then discharged into the ditch through the exhaust pipe 1. When the amount of water is small, the water carrying resin flows back into the condensate polishing equipment due to the slope of the bottom 15 of the pipe. When the compressed air carries a large amount of water and resin, water accumulates in the resin leakage monitoring pipe 2. Due to the difference in absorbance between air and water, the signal from the measuring receiver 13 changes. Based on the linkage with any one or more of the vent valve 3, bottom water inlet valve 4, and bottom air inlet valve 5, and according to the position set by the operation control system, the opening of any one or more of these valves is gradually reduced by 25%, thereby preventing resin leakage.
[0039] Through the above description of the embodiments, those skilled in the art can clearly understand that the above embodiments can be implemented by software, or by using software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solutions of the above embodiments can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, mobile hard drive, etc.), including several instructions to cause a computer device (such as a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this utility model.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A resin leakage prevention device for condensate polishing equipment in thermal power plants, characterized in that, include: An exhaust pipe (1) and a resin leakage monitoring pipe (2) installed on the exhaust pipe (1); wherein the exhaust pipe (1) is vertically installed on one side of the top of the condensate polishing equipment, the diameter of the resin leakage monitoring pipe (2) is larger than the diameter of the exhaust pipe (1), and the bottom (15) of the resin leakage monitoring pipe (2) is inclined at 5°-10° to the horizontal plane, the outlet of the resin leakage monitoring pipe (2) is connected to the inlet of the vent valve (3) installed on the exhaust pipe (1), and the outlet of the vent valve (3) is connected to the top opening of the condensate polishing equipment; the inlet of the resin leakage monitoring pipe (2) is connected to the wastewater tank through a leakage pipe.
2. The resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 1, characterized in that, The diameter of the resin leakage monitoring tube (2) is 2-3 times the diameter of the exhaust pipe (1).
3. A resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 2, characterized in that, A water inlet valve (6) is also vertically installed on the top of the condensate polishing equipment.
4. A resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 3, characterized in that, The bottom of the condensate polishing equipment is provided with a drain pipe, and a resin trap (8) is provided on the drain pipe. The outlet of the resin trap (8) is provided with a water outlet valve (7) and a wastewater pipeline through the wastewater pool.
5. A resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 4, characterized in that, The inlet of the resin trap (8) is connected to a tap water inlet pipe, and a bottom water inlet valve (4) is connected to the tap water inlet pipe. A bottom air inlet valve (5) is provided as a bypass between the bottom water inlet valve (4) and the inlet passage of the resin trap (8). The bottom air inlet valve (5) is connected to a compressed air source.
6. A resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 5, characterized in that, The condensate polishing equipment is provided with a grease inlet valve (10) on one side, and the grease inlet valve (10) is connected to the inlet of the bottom water inlet valve (4) through a pipeline provided with a top water filling valve (9).
7. A resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 6, characterized in that, The resin leakage monitoring tube (2) includes a tube wall (11) made of transparent resin material and a measuring device disposed at the bottom (15) of the resin leakage monitoring tube; the measuring device consists of a pair of measuring transmitters (12) and measuring receivers (13) disposed opposite to each other on the outside of the tube wall (11) and a processor (14).
8. A resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 7, characterized in that, The condensate polishing equipment is further provided with one or more of the following positions: the drain valve (3), the bottom water inlet valve (4), and the bottom air inlet valve (5). The processor (14) is connected to the operation control system. When the resin leakage is detected, the processor automatically closes one or more of the following positions: the drain valve (3), the bottom water inlet valve (4), and the bottom air inlet valve (5).
9. A resin leak-proof device for condensate polishing equipment in thermal power plants according to claim 8, characterized in that, The condensate polishing equipment also includes an automatic calibrator, which is connected to the measuring instrument and is used to automatically calibrate the measuring instrument.