A high pressure boiler drum level gauge
By introducing floating control parts, water accumulation device and density mixing part into the boiler drum level meter, the problems of level meter fragmentation and temperature difference error in high-pressure environment are solved, and high-precision liquid level display and automatic water circulation are realized , improves the durability and safety of the liquid level gauge.
Patent Information
- Application Number
- CN202410978894.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2044-07-22
AI Technical Summary
The existing boiler drum level meter has a risk of fragmentation under high pressure environments, and the display error is large due to the difference in water temperature between the level meter and the drum. The condensation and reflux of the condensation water affect the accuracy of the level meter, making it difficult to be at high pressure. Automatic water circulation is realized in the environment.
A liquid level meter structure including a floating control part, a water accumulation device, a conductive condensation part, a discharge control part and a density mixing part is designed. The condensed water is automatically recovered through the floating control part, and the hot water in the mixed liquid level display part is used. The density mixing part sucks and mixes hot water under high pressure, and the flow limiting device realizes one-way flow, improving the liquid level display accuracy.
Effectively avoid direct introduction of condensate water into the level gauge, improve the accuracy of the level display and high-pressure resistance, ensure the reliability and accuracy of the level gauge in a high-pressure environment, reduce temperature errors, and automatically recover and mix Improves the service life of the liquid level gauge.
Smart Images
Figure CN118654274B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of drum level gauges, and in particular to a high-pressure boiler drum level gauge. Background Art
[0002] The steam drum is an important pressure-bearing component in a natural circulation boiler. It is mainly used in high-pressure subcritical boilers in power production. In the actual working process of the boiler drum, it is necessary to monitor the water level inside it. Because of its high pressure and high temperature, the hot water inside the drum must be kept within a certain height range. Abnormal water level will directly affect the safe operation of the boiler. At present, the common boiler drum liquid level gauges mostly use two-color liquid level gauges for measurement, that is, directly observe the liquid level through the window. It is widely used due to its advantages such as intuitive liquid level display. However, the current boiler drum liquid level gauge has poor high pressure resistance effect, and the liquid level gauge with glass display window is not good. The level gauge is at risk of breaking. At the same time, because the liquid level gauge is located outside the steam drum, there is a large deviation between its internal water temperature and the water temperature inside the steam drum. The water density is different at different temperatures, and the density of the critical water inside the steam drum is relatively low, which leads to a large error in the actual displayed water level. It is not convenient to increase the mixing effect between the liquid level gauge and the critical water in the steam drum to reduce the liquid level difference caused by the temperature difference. At the same time, the air pressure duct between the liquid level gauge and the steam drum will continuously produce condensed water and flow into the liquid level gauge, which will further affect the deviation between the liquid level gauge and the water temperature in the steam drum. It is not convenient for the independent discharge of condensed water and the automatic water circulation under high pressure environment, which affects the accuracy of the water level gauge. Summary of the invention
[0003] The disclosed embodiment relates to a high-pressure boiler drum liquid level gauge, whose floating control component can automatically control the recovery of condensed water to avoid direct introduction into the liquid level gauge. At the same time, the liquid level gauge can be automatically controlled to perform drum water suction circulation work in a high-pressure environment, thereby increasing the internal water temperature of the structure and improving the water level display accuracy.
[0004] In a first aspect of the present disclosure, a high-pressure boiler drum level gauge is provided, which specifically includes a level display component, on which a water accumulation device is installed; on which a conductive condensation portion is installed; the water accumulation device is used to collect condensed water discharged from the conductive condensation portion; a discharge control component is slidably installed inside the water accumulation device; a floating control component is installed inside the water accumulation device; the floating control component is attached to the discharge control component; the floating control component is used to control the discharge of condensed water by the discharge control component; a density mixing portion is installed on the floating control component, and the density mixing portion is sleeved inside the level display component; the density mixing portion is used to mix the hot water inside the level display component and the hot water in the drum; a flow limiting device is installed inside the level display component, and the flow limiting device is used to limit the flow of hot water inside the level display component; the level display component includes: a level installation pipe and a drum connecting pipe, on the side of the level installation pipe, a drum connecting pipe is fixedly installed, and a flange is provided on the drum connecting pipe; the flange on the drum connecting pipe is used to connect the drum water pipe.
[0005] In at least some embodiments, the floating control component includes: a floating control block, a tension spring frame, a tension spring and a pull-back rope, the floating control block is slidably sleeved on the sleeve inner cylinder; three tension spring frames are fixedly installed on the floating control block, and the three tension spring frames are respectively provided with a circle of slots; tension springs are respectively fixedly installed inside the three tension spring frames, and the ends of the three tension springs are respectively connected to the bottom of the water accumulation installation cylinder; pull-back ropes are respectively fixedly installed on the three tension spring frames, and the three pull-back ropes respectively pass through the three through holes on the sleeve inner cylinder; the other ends of the three pull-back ropes are twisted and gathered into a single rope.
[0006] In at least some embodiments, the emission control component includes: a sliding shielding tube and a lifting and switching magnet ring, the sliding shielding tube is slidably sleeved inside the water accumulation mounting tube; a lifting and switching magnet ring is fixedly installed on the upper end of the sliding shielding tube; the lifting and switching magnet ring is used to magnetically attract two control annular magnets; the sliding shielding tube is used to control the on and off of the drainage of the condensation reflux drain pipe; and a raised ring with the same inner diameter as the lifting and switching magnet ring is provided at the bottom of the sliding shielding tube.
[0007] In at least some embodiments, the flow limiting device includes: a flow limiting position ring and a valve sheet, wherein the flow limiting position ring is fixedly sleeved inside the boiler connecting pipe; a circle of valve sheets is fixedly installed inside the flow limiting position ring; the circle of valve sheets are all installed obliquely; the valve sheets are used for one-way flow limiting liquid level installation pipe hot water inside; the valve sheets are elastic thin sheet structures.
[0008] In at least some embodiments, the liquid level display component includes: a floating block, an inner magnet, a lifting ring, drag reduction balls and an outer magnet, the floating block is slidably sleeved inside the liquid level mounting tube; the inner magnet is fixedly installed inside the floating block; the lifting ring is located outside the liquid level mounting tube; six rows of drag reduction balls are embedded in the lifting ring, and the six rows of drag reduction balls are respectively rolled and fitted on the outside of the liquid level mounting tube; the outer magnet is embedded in the lifting ring; the outer magnet is magnetically connected to the inner magnet; the liquid level mounting tube is provided with scale lines; the floating block is used to float inside the liquid level mounting tube to detect the liquid level.
[0009] In at least some embodiments, the water accumulation device includes: a water accumulation mounting tube, a sleeve inner tube, a liquid separator, a condensate reflux drain pipe and a control annular magnet, the water accumulation mounting tube is fixedly mounted on the liquid level mounting tube; a sleeve inner tube is fixedly mounted inside the water accumulation mounting tube; a through slot is provided on the sleeve inner tube; the through slot on the sleeve inner tube is used to conduct the air pressure between the liquid level mounting tube and the steam drum; three through holes are provided on the sleeve inner tube; a liquid separator is fixedly mounted inside the water accumulation mounting tube, and the liquid separator is an umbrella-shaped inclined surface structure; the liquid separator is used to guide condensate into the water accumulation mounting tube; a condensate reflux drain pipe is fixedly mounted on the bottom side of the water accumulation mounting tube, and a flange is provided at the end of the condensate reflux drain pipe; the flange at the end of the condensate reflux drain pipe is used to discharge condensate to the steam drum after connecting to the steam drum; two control annular magnets are fixedly sleeved inside the water accumulation mounting tube; a gap is provided between the two control annular magnets; the two control annular magnets are respectively used for magnetic attraction positioning emission control components.
[0010] In at least some embodiments, the floating control member further includes: an on-off control ring, which is fixedly sleeved on the floating control block; the on-off control ring is located inside the sliding shielding tube; the on-off control ring is used to lift and push to control the movement of the lifting and switching magnet ring.
[0011] In at least some embodiments, the conductive condensation part includes: an air duct and a heat exchange plate, one end of the air duct is fixedly installed above the water accumulation installation cylinder; the other end of the air duct is provided with a flange, and the flange at the other end of the air duct is used to connect to the steam drum to balance the air pressure; a circle of heat exchange plates is fixedly installed on the air duct; the air duct is installed obliquely; and the air duct is used to condense the steam in the steam drum.
[0012] In at least some embodiments, the density mixing section also includes: a lifting hole cover and a booster plate, the lifting hole cover is slidably sleeved on the pulling column; the lifting hole cover is slidably inserted on the sliding column; six through holes are opened on the lifting hole cover; the six through holes opened on the lifting hole cover are offset from the six through holes opened on the pulling column; the booster plate is fixedly installed on the bottom of the lifting hole cover; the conductive tension spring is connected between the lifting hole cover and the pulling column; the booster plate is snugly sleeved inside the liquid level mounting tube; the booster plate is used to suck hot water from the steam drum.
[0013] In at least some embodiments, the density mixing part includes: a pulling column, a conductive tension spring and a sliding column, the pulling column is sleeved with a conductive tension spring; a sliding column is fixedly installed on the top of the pulling column; the sliding column is connected to the other end of the three pull ropes; six through holes are opened on the pulling column; and the sliding column is a hexagonal column structure.
[0014] The present invention provides a high-pressure boiler drum level gauge, which has the following beneficial effects:
[0015] The present invention adopts a conductive condensation part to carry out condensation recovery work. In conjunction with the water accumulation device, the condensed water can be independently recovered, which can prevent the condensed water from directly condensing and being introduced into the liquid level installation pipe to cause a rapid drop in temperature, thereby aggravating the liquid level error caused by the temperature difference. The liquid level installation pipe used does not need to be provided with a glass observation window, and can have better high-pressure resistance.
[0016] In addition, by adopting the emission control component, the accumulated and recovered condensed water can be utilized to perform buoyancy control work, and the present structure can be controlled to automatically recover the condensed water and introduce it into the steam drum, and cooperate with the floating control component to realize reciprocating driving work, and drive the density mixing part to mix the hot water inside the liquid level installation pipe with the hot water inside the steam drum, thereby improving the reliability of the hot water inside the liquid level installation pipe, eliminating the need for cumbersome electric-driven mixing, having low power consumption and ensuring accurate liquid level detection, and also ensuring the airtightness of the present structure, thereby improving the durability of the structure.
[0017] In addition, a density mixing part is used to perform lifting and lowering air pressure suction, which can be moved upward under the control of a floating control part. A lifting hole cover is used in conjunction with a pulling column, and the staggered air holes are used to automatically control the closed air pressure during the upward pulling process, thereby further improving the efficiency of the mixing and suction, ensuring the liquid level accuracy of the liquid level installation pipe, increasing the flow of hot water, and also playing a role in flushing and cleaning. There is no need to manually control multiple valves like traditional flushing. Through the flow limiting device, the structure is simple and the cost is low. The valve structure is used to facilitate one-way flow. When the water flow is sucked into the liquid level installation pipe, it is smooth, while on the contrary, the resistance is large during discharge. The hot water in the steam drum and the hot water in the liquid level installation pipe can be better mixed, thereby improving the consistency of the hot water density, and avoiding the hot water in the steam drum just sucked into the liquid level installation pipe from flowing back to the steam drum in large quantities under the action of air pressure, thereby improving the mixing water quality of the present structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.
[0019] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.
[0020] In the attached picture:
[0021] Figure 1 A schematic diagram showing the overall structure of the liquid level meter of the present application;
[0022] Figure 2 A cross-sectional view showing the internal structure of the liquid level meter of the present application;
[0023] Figure 3 A schematic diagram showing the bottom structure of the liquid level meter of the present application is shown;
[0024] Figure 4 A schematic diagram showing the structure of the water accumulation device of the present application is shown;
[0025] Figure 5 A partial cross-sectional view showing the structure of the liquid level display member;
[0026] Figure 6 Shows Figure 2 A magnified view of the structure of the middle D region;
[0027] Figure 7 A schematic diagram showing the structure of the emission control component of the present application is shown;
[0028] Figure 8 A schematic diagram showing the floating control member structure of the present application is shown;
[0029] Fig. 9 An enlarged view of the internal structure of the density mixing unit of the present application is shown;
[0030] Fig.10 A schematic diagram showing the structure of the current limiting device of the present application is shown;
[0031] Fig.11 A cross-sectional view showing the internal structure of the floating control member of the present application;
[0032] Fig.12 Shows Fig.11 Enlarged view of the structure of the middle G region.
[0033] Reference numerals list
[0034] 1. Liquid level display; 101. Liquid level installation pipe; 102. Steam drum connecting pipe; 103. Floating block; 104. Inner magnet; 105. Lifting ring mark; 106. Drag reduction ball; 107. Outer magnet; 2. Water accumulation device; 201. Water accumulation installation cylinder; 202. Socket inner cylinder; 2021. Liquid separation plate; 203. Condensation reflux drain pipe; 204. Control ring magnet; 3. Conducting condensation part; 301. Air guide pipe; 302. Heat exchange plate; 4 , emission control part; 401, sliding shielding cylinder; 402, lifting and switching magnet ring; 5, floating control part; 501, floating control block; 502, tension spring frame; 503, tension spring; 504, pull-back rope; 505, break control circle; 6, density mixing part; 601, pulling column; 602, conductive tension spring; 603, sliding column; 604, lifting hole cover; 605, booster disk; 7, current limiting device; 701, current limiting and limiting ring; 702, valve sheet. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0036] Example 1: Please refer to Figures 1 to 12 :
[0037] The present invention proposes a high-pressure boiler drum liquid level gauge, comprising a liquid level display component 1, a water accumulation device 2 is installed on the liquid level display component 1; a conductive condensation portion 3 is installed on the water accumulation device 2; the water accumulation device 2 is used to collect condensed water discharged from the conductive condensation portion 3; a discharge control component 4 is slidably installed inside the water accumulation device 2; a floating control component 5 is installed inside the water accumulation device 2; the floating control component 5 is attached to the discharge control component 4; the floating control component 5 is used to control the discharge of condensed water by the discharge control component 4; a density mixing portion 6 is installed on the floating control component 5, The density mixing part 6 is sleeved inside the liquid level display 1; the density mixing part 6 is used to mix the hot water inside the liquid level display 1 and the hot water inside the drum; a flow limiting device 7 is installed inside the liquid level display 1, and the flow limiting device 7 is used to limit the flow of hot water inside the liquid level display 1; the liquid level display 1 includes: a liquid level installation pipe 101 and a drum connecting pipe 102, the drum connecting pipe 102 is fixedly installed on the side of the liquid level installation pipe 101, and the drum connecting pipe 102 is provided with a flange; the flange on the drum connecting pipe 102 is used to connect the drum water pipe.
[0038] In the embodiment of the present disclosure, the liquid level display element 1 includes: a floating block 103, an inner magnet 104, a lifting ring mark 105, a drag reduction ball 106 and an outer magnet 107. The floating block 103 is slidably sleeved inside the liquid level installation tube 101; the inner magnet 104 is fixedly installed inside the floating block 103; the lifting ring mark 105 is located outside the liquid level installation tube 101; six rows of drag reduction balls 106 are embedded inside the lifting ring mark 105, and the six rows of drag reduction balls 106 are respectively rolled and attached to the outside of the liquid level installation tube 101; the outer magnet 107 is embedded inside the lifting ring mark 105; The outer magnet 107 is magnetically connected to the inner magnet 104; the liquid level installation tube 101 is provided with a scale line; the floating block 103 is used to float inside the liquid level installation tube 101 to detect the liquid level; the water accumulation device 2 includes: a water accumulation installation tube 201, a sleeve inner tube 202, a liquid separation plate 2021, a condensation reflux drainage pipe 203 and a control annular magnet 204, and the water accumulation installation tube 201 is fixedly installed on the liquid level installation tube 101; a sleeve inner tube 202 is fixedly installed inside the water accumulation installation tube 201; a through slot is provided on the sleeve inner tube 202; the through slot on the sleeve inner tube 202 Used to conduct the air pressure between the liquid level installation tube 101 and the steam drum; three through holes are provided on the sleeve inner tube 202; a liquid separation plate 2021 is fixedly installed inside the water accumulation installation tube 201, and the liquid separation plate 2021 is an umbrella-shaped inclined surface structure; the liquid separation plate 2021 is used to guide the condensed water into the water accumulation installation tube 201; a condensation reflux drain pipe 203 is fixedly installed on the bottom side of the water accumulation installation tube 201, and a flange is provided at the end of the condensation reflux drain pipe 203; the flange at the end of the condensation reflux drain pipe 203 is used to discharge the condensed water to the steam drum after connecting the steam drum; the water accumulation installation tube 2 01 has two control annular magnets 204 fixedly sleeved inside; the two control annular magnets 204 are respectively used for magnetic attraction and positioning of the emission control component 4; a gap is provided between the two control annular magnets (204); the conductive condensation part 3 comprises: an air guide pipe 301 and a heat exchange plate 302, one end of the air guide pipe 301 is fixedly installed above the water accumulation installation cylinder 201; the other end of the air guide pipe 301 is provided with a flange, and the flange at the other end of the air guide pipe 301 is used to connect the steam drum to balance the air pressure; a circle of heat exchange plates 302 are fixedly installed on the air guide pipe 301; the air guide pipe 301 is installed obliquely;The air guide pipe 301 is used to condense the steam in the drum. The condensation recovery work can be carried out by using the conducting condensation part 3. The condensed water is recovered at the air pressure connection between the top of the liquid level gauge and the drum. With the water accumulation device 2, the condensed water can be recovered independently, which can avoid the condensed water directly condensing and introducing into the liquid level installation pipe 101 to cause a rapid drop in temperature, and aggravate the liquid level error caused by the temperature difference. The air guide pipe 301 used can increase the condensation recovery efficiency. The inclined installation is convenient for the condensed water to flow by itself. The heat exchange efficiency is increased through the heat exchange plate 302. The liquid level installation pipe 101 used does not need to be provided with a glass observation window, and can have better high-pressure resistance. The liquid level installation pipe 101 can be processed with titanium alloy as raw material to further improve the compressive strength. The structure uses an inner magnet 104 and an outer magnet 107 to realize the liquid level detection work by magnetic attraction, and does not affect the compressive strength of the structure. ;
[0039] In the disclosed embodiment, the emission control component 4 includes: a sliding shielding cylinder 401 and a lifting and switching magnet ring 402. The sliding shielding cylinder 401 is slidably sleeved inside the water accumulation installation cylinder 201; a lifting and switching magnet ring 402 is fixedly installed on the upper end of the sliding shielding cylinder 401; the lifting and switching magnet ring 402 is used to magnetically attract two control annular magnets 204; the sliding shielding cylinder 401 is used to control the on and off of the drainage of the condensation reflux drainage pipe 203; a raised circle with the same inner diameter as the lifting and switching magnet ring 402 is provided at the bottom of the sliding shielding cylinder 401; the floating control component 5 includes: a floating control block 501, a tension spring frame 502, a tension spring 503 and a pull-back rope 504, the floating control block 501 is slidably sleeved on the sleeved inner cylinder 202; the floating control block 501 Three tension spring frames 502 are fixedly installed, and each of the three tension spring frames 502 is provided with a circle of slots; tension springs 503 are fixedly installed inside the three tension spring frames 502, and the ends of the three tension springs 503 are connected to the bottom of the water accumulation installation cylinder 201; pull-back ropes 504 are fixedly installed on the three tension spring frames 502, and the three pull-back ropes 504 pass through the three through holes on the sleeve inner cylinder 202 respectively; the other ends of the three pull-back ropes 504 are twisted and gathered into a single rope; the floating control member 5 also includes: an on-off control circle 505, which is fixedly sleeved on the floating control block 501; the on-off control circle 505 is located inside the sliding shielding cylinder 401; the on-off control circle 505 is used for lifting and pushing to control the movement of the lifting and switching magnet ring 402;The water accumulation device 2 and the floating control component 5 are buoyancy control components, and their diameter and volume are closely related to the buoyancy that can be provided. They can be customized and produced according to the size of the steam drum. By adopting the discharge control component 4, the accumulated and recovered condensed water can be used for buoyancy control, and the present structure can be controlled to automatically recover the condensed water. While introducing the condensed water into the steam drum, the floating control component 5 can be cooperated to realize reciprocating driving work, and the density mixing part 6 can be driven to mix the hot water inside the liquid level installation pipe 101 with the hot water inside the steam drum, so as to improve the reliability of the hot water inside the liquid level installation pipe 101, and be better suitable for the scene where the water level of the steam drum is relatively stable, but the temperature is high and the hot water inside the liquid level installation pipe 101 has poor fluidity, so as to avoid the problem of low readings caused by too low water temperature. The present structure can realize the control work through the buoyancy of condensed water inside the equipment through the floating control component 5, with low power consumption and accurate liquid level detection, while also ensuring the air tightness of the present structure, without the need for external Drive to ensure the sealing quality between the structural components. Under the action of buoyancy, the floating control block 501 floats up, stretching the tension spring 503, and the lifting and switching magnet ring 402 above can be driven to move up through the on-off control circle 505. At this time, under the attraction of the upper control annular magnet 204, the lifting and switching magnet ring 402 can be instantly magnetically attracted to the upper control annular magnet 204. At this time, the sliding shielding cylinder 401 can remove the shielding of the condensate reflux drain pipe 203 and realize liquid flow. The condensate flows back to the inside of the steam drum through the condensate reflux drain pipe 203, and the water level inside the water accumulation device 2 gradually decreases. The floating control block 501 is quickly reset downward under the pull of the tension spring 503. Under the attraction of the lower control annular magnet 204, the lifting and switching magnet ring 402 and the lower control annular magnet 204 are magnetically attracted. At this time, the sliding shielding cylinder 401 will block the condensate reflux drain pipe 203 again, and the water accumulation drive and condensate discharge work are continuously performed through the above principle. ;
[0040] In the disclosed embodiment, the density mixing section 6 includes: a pulling column 601, a conductive tension spring 602 and a sliding column 603, the pulling column 601 is sleeved with a conductive tension spring 602; a sliding column 603 is fixedly installed on the top of the pulling column 601; the sliding column 603 is connected to the other end of the three pull-back ropes 504; six through holes are opened on the pulling column 601; the sliding column 603 is a hexagonal column structure; the density mixing section 6 also includes: a lifting hole cover 604 and a booster disk 605, the lifting hole cover 604 is slidably sleeved on the pulling column 601; the lifting hole cover 604 is slidably plugged on the sliding column 603; the lifting hole cover 604 is opened There are six through holes; the six through holes on the lifting hole cover 604 are offset from the six through holes on the pulling column 601; the booster disk 605 is fixedly installed at the bottom of the lifting hole cover 604; the conductive tension spring 602 is connected between the lifting hole cover 604 and the pulling column 601; the booster disk 605 is snugly sleeved inside the liquid level installation tube 101; the booster disk 605 is used to pump hot water in the steam drum; the density mixing part 6 is used to perform lifting and lowering air pressure suction, which can be moved upward under the control of the floating control part 5, and the air pressure is used to increase the internal fluidity of the liquid level installation tube 101, promote the internal water temperature to be close to the steam drum, and improve the water level display accuracy.
[0041] The density mixing section 6 can automatically control the closed air pressure during the upward pulling process, further improving the efficiency of the mixed suction. The lifting hole cover 604 cooperates with the pulling column 601 to utilize the staggered air holes to automatically approach each other during the upward suction, thereby reducing gas leakage and improving the suction effect. At the same time, it can open automatically to avoid affecting the air pressure conduction between the liquid level installation pipe 101 and the steam drum. The structural control is simple and reasonable, which improves the mixing effect and ensures the liquid level accuracy of the liquid level installation pipe 101. At the same time, it increases the flow of hot water and also plays a role in flushing and cleaning.
[0042] Embodiment 2, on the basis of embodiment 1, the flow limiting device 7 comprises: a flow limiting and limiting ring 701 and a valve sheet 702, the flow limiting and limiting ring 701 is fixedly sleeved inside the drum connecting pipe 102; a circle of valve sheets 702 is fixedly installed inside the flow limiting and limiting ring 701; a circle of valve sheets 702 are all installed obliquely; the valve sheet 702 is used for one-way flow limiting of hot water inside the liquid level installation pipe 101; the valve sheet 702 is an elastic thin sheet structure, and the flow limiting device 7 is adopted, which has a simple structure and low cost. By utilizing its valve structure, it can facilitate one-way flow, and the water flow is smooth when it is sucked into the liquid level installation pipe 101, while the resistance is large when it is discharged, which can improve the mixing effect of the hot water in the drum sucked in and the hot water inside the liquid level installation pipe 101, and reduce the liquid level installation pipe 10 1, the critical hot water just sucked in by the floating control block 501 flows back to the critical hot water of the drum under the action of air pressure, so as to improve the water mixing quality of the present structure. When the floating control block 501 descends, the pull rope 504 is pulled back to drive the pulling column 601 to rise rapidly. At this time, the pulling column 601 moves upward under the action of the tension, and the booster disc 605 and the liquid level installation pipe 101 are in contact with each other, which will generate negative pressure. At this time, the pulling column 601 moves upward at a fast speed, and the conductive tension spring 602 is stretched, and the six through holes opened on the lifting hole cover 604 are misaligned with the six through holes opened on the pulling column 601, which plays a role in reducing the air pressure circulation. The booster disc 605 will suck the liquid level installation pipe 101 by moving upward, and the liquid level installation pipe 101 will suck the hot water in the drum for mixing.
[0043] The working principle of this embodiment is as follows: first, a water inlet pipe is arranged on the upper part of the boiler drum for recovering condensed water, and a valve is arranged on the water inlet pipe. The flange on the drum connecting pipe 102 is connected to the drum water pipe, and the flange at the end of the condensate reflux drain pipe 203 is connected to the water inlet pipe on the upper part of the boiler drum for recovering condensed water. Finally, the flange on the air guide pipe 301 is connected to the vent pipe on the upper part of the drum. After the present structure is installed on the boiler drum, the water pipe and the vent pipe valve connecting the drum are opened to carry out the liquid level measurement. Under the action of water pressure, hot water is introduced into the liquid level installation pipe 101, and the buoyancy drives the floating block 103 to rise. The inner magnet 104 inside can magnetically drive the outer magnet 107 to drive the lifting ring mark 105 to rise and fall. The sliding resistance is reduced by the drag reduction ball 106. The scale line provided on the liquid level installation pipe 101 can be observed in cooperation with the heat exchange plate 302 to realize the condensation of water vapor and introduce it into the liquid separation plate. After 2021, it can be recovered through the water accumulation installation cylinder 201. After water continues to accumulate in the water accumulation installation cylinder 201, under the action of buoyancy, the floating control block 501 is controlled to float up and the tension spring 503 is stretched. At this time, as the water accumulates, the floating control block 501 continues to drive the on-off control circle 505 to move upward. At this time, the on-off control circle 505 can touch and squeeze the upper lifting and switching magnet ring 402, driving the upper lifting and switching magnet ring 402 to move upward. At this time, under the attraction of the upper control annular magnet 204, the lifting and switching magnet ring 402 can be instantly magnetically attracted to the upper control annular magnet 204. At this time, the sliding shielding cylinder 401 can remove the shielding of the condensate reflux drain pipe 203 and realize liquid flow. Under the action of gravity, the condensate flows back to the inside of the steam drum through the condensate reflux drain pipe 203, and the water level inside the water accumulation device 2 gradually decreases. The floating control block 501 is controlled to quickly reset downward under the pull of the tension spring 503;
[0044] When the floating control block 501 is controlled to descend to the bottom, the on-off control circle 505 is driven to press down the bottom of the lifting and switching magnet ring 402, driving the lifting and switching magnet ring 402 to separate from the upper control annular magnet 204, and the lifting and switching magnet ring 402 is attracted by the lower control annular magnet 204. At this time, the sliding shielding cylinder 401 will block the condensation reflux drainage pipe 203, and accumulate condensed water through the water accumulation device 2 again. The driving and condensed water discharge work are continuously performed according to the above principle. In this process, when the floating control block 501 descends and resets, the pull rope 504 is pulled back to drive the pulling column 601 rises quickly, at this time, the pulling column 601 moves upward under the action of the pulling force, and the booster disc 605 and the liquid level installation tube 101 are in contact with each other, which will generate negative pressure. At this time, the pulling column 601 moves up quickly, and the conductive tension spring 602 is stretched. Through the six through holes opened on the lifting hole cover 604 and the six through holes opened on the pulling column 601, the through hole intervals are used to stagger and contact each other, which plays a role in reducing the air pressure circulation. As the floating control block 501 descends, the booster disc 605 will suck the liquid level installation tube 101 by moving upward, and the liquid level installation tube 101 will suck the hot water in the steam drum for mixing, and cooperate with the valve sheet 702 to ensure smooth circulation;
[0045] When the floating control block 501 drops to the bottom, the pulling column 601 also stops moving, and cooperates with the conductive tension spring 602 to pull the lifting hole cover 604 to move up and reset. The six through holes opened on the lifting hole cover 604 and the six through holes opened on the pulling column 601 are no longer misaligned and closed, and can be separated and connected again to ensure the internal air pressure of the liquid level installation pipe 101. At this time, because the liquid level installation pipe 101 has just been sucked by negative pressure, the liquid level is relatively high. After standing for a period of time, the liquid level will automatically be level with the liquid level in the steam drum. During this process, when excess hot water in the liquid level installation pipe 101 flows back to the steam drum, the reverse flow of the valve piece 702 will block and limit the flow, slow down the return time, and increase the quality of mixed heat conduction. As the floating control block 501 is controlled to rise by the coolant, the pull-back rope 504 is also driven downward. Under the action of gravity, the booster plate 605 can automatically slide down to prepare for the next mixing by pulling up with the pull-back rope 504. At the same time, when the lifting ring mark 105 returns to stability, its corresponding scale position can be quickly observed.
[0046] In this article, there are a few points to note:
[0047] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.
[0048] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.
[0049] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.
Claims
1. A high-pressure boiler drum liquid level gauge, comprising a liquid level display element (1), wherein a water accumulation device (2) is installed on the liquid level display element (1); characterized in that: The water accumulation device (2) is provided with a conductive condensation portion (3); the water accumulation device (2) is used to collect condensed water discharged from the conductive condensation portion (3); A discharge control component (4) is slidably mounted inside the water accumulation device (2); A floating control component (5) is installed inside the water accumulation device (2); the floating control component (5) is attached to the discharge control component (4); the floating control component (5) is used to control the discharge control component (4) to discharge condensed water; The floating control component (5) is provided with a density mixing part (6), and the density mixing part (6) is sleeved inside the liquid level display component (1); the density mixing part (6) is used to mix the hot water inside the liquid level display component (1) and the hot water in the steam drum; A flow limiting device (7) is installed inside the liquid level display component (1), and the flow limiting device (7) is used to limit the flow of hot water inside the liquid level display component (1); The liquid level display element (1) comprises: a liquid level installation pipe (101) and a drum connecting pipe (102); the drum connecting pipe (102) is fixedly installed on the side of the liquid level installation pipe (101), and the drum connecting pipe (102) is provided with a flange; the flange on the drum connecting pipe (102) is used to connect to a drum water pipe; The floating control member (5) comprises: a floating control block (501), a tension spring frame (502), a tension spring (503) and a pull-back rope (504); The density mixing part (6) comprises: a pulling column (601), a conductive tension spring (602) and a sliding column (603); the pulling column (601) is sleeved with the conductive tension spring (602); the sliding column (603) is fixedly installed on the top of the pulling column (601); the sliding column (603) is connected to the other ends of the three pull ropes (504); six through holes are opened on the pulling column (601); the sliding column (603) is a hexagonal column structure; The density mixing section (6) further comprises: a lifting hole cover (604) and a boosting plate (605), wherein the lifting hole cover (604) is slidably sleeved on the pulling column (601); the lifting hole cover (604) is slidably plugged on the sliding column (603); six through holes are provided on the lifting hole cover (604); the six through holes provided on the lifting hole cover (604) are offset from the six through holes provided on the pulling column (601); the boosting plate (605) is fixedly mounted on the bottom of the lifting hole cover (604); the conductive tension spring (602) is connected between the lifting hole cover (604) and the pulling column (601); the boosting plate (605) is snugly sleeved inside the liquid level mounting tube (101); and the boosting plate (605) is used to extract hot water from the steam drum.
2. A high pressure boiler drum level gauge according to claim 1, characterized in that: The liquid level display component (1) comprises: a floating block (103), an inner magnet (104), a lifting ring mark (105), a drag reduction ball (106) and an outer magnet (107); the floating block (103) is slidably sleeved inside a liquid level installation tube (101); the inner magnet (104) is fixedly installed inside the floating block (103); the lifting ring mark (105) is located outside the liquid level installation tube (101); six rows of drag reduction balls (106) are embedded inside the lifting ring mark (105), and the six rows of drag reduction balls (106) are respectively rolled and attached to the outside of the liquid level installation tube (101); the outer magnet (107) is embedded inside the lifting ring mark (105); the outer magnet (107) is magnetically connected to the inner magnet (104); the liquid level installation tube (101) is provided with scale lines; the floating block (103) is used to float inside the liquid level installation tube (101) to detect the liquid level.
3. The high-pressure boiler drum level gauge according to claim 1, characterized in that: The water accumulation device (2) comprises: a water accumulation installation tube (201), a sleeve inner tube (202), a liquid separation plate (2021), a condensation reflux drain pipe (203) and a control annular magnet (204); the water accumulation installation tube (201) is fixedly installed on the liquid level installation tube (101); a sleeve inner tube (202) is fixedly installed inside the water accumulation installation tube (201); a through slot is provided on the sleeve inner tube (202); the through slot on the sleeve inner tube (202) is used to conduct the air pressure between the liquid level installation tube (101) and the steam drum; the sleeve inner tube (202) is provided with three through holes; a liquid separation plate (2021) is fixedly installed inside the water accumulation installation tube (201) 021), and the liquid separation plate (2021) is an umbrella-shaped inclined surface structure; the liquid separation plate (2021) is used to guide condensed water into the interior of the water storage installation tube (201); a condensation reflux drainage pipe (203) is fixedly installed on the bottom side of the water storage installation tube (201), and a flange is provided at the end of the condensation reflux drainage pipe (203); the flange at the end of the condensation reflux drainage pipe (203) is used to discharge condensed water to the steam drum after connecting to the steam drum; two control annular magnets (204) are fixedly sleeved inside the water storage installation tube (201); a gap is provided between the two control annular magnets (204); the two control annular magnets (204) are respectively used for magnetic attraction and positioning of the emission control component (4).
4. A high-pressure boiler drum level gauge according to claim 3, characterized in that: The conduction condensation part (3) comprises: an air guide pipe (301) and a heat exchange plate (302); one end of the air guide pipe (301) is fixedly mounted above the water accumulation mounting tube (201); the other end of the air guide pipe (301) is provided with a flange, and the flange at the other end of the air guide pipe (301) is used to connect to the steam drum to balance the air pressure; a circle of heat exchange plates (302) is fixedly mounted on the air guide pipe (301); the air guide pipe (301) is installed obliquely; and the air guide pipe (301) is used to condense the steam in the steam drum.
5. The high-pressure boiler drum level gauge according to claim 3, characterized in that: The emission control component (4) comprises: a sliding shielding tube (401) and a lifting and switching magnet ring (402); the sliding shielding tube (401) is slidably sleeved inside the water accumulation installation tube (201); a lifting and switching magnet ring (402) is fixedly installed on the upper end of the sliding shielding tube (401); the lifting and switching magnet ring (402) is used to magnetically attract two control annular magnets (204); the sliding shielding tube (401) is used to control the on and off of drainage of the condensation reflux drainage pipe (203); and a raised ring with the same inner diameter as the lifting and switching magnet ring (402) is provided at the bottom of the sliding shielding tube (401).
6. A high-pressure boiler drum level gauge according to claim 5, characterized in that: The floating control block (501) is slidably sleeved on the sleeve inner cylinder (202); three tension spring frames (502) are fixedly mounted on the floating control block (501), and each of the three tension spring frames (502) is provided with a circle of slots; tension springs (503) are fixedly mounted inside the three tension spring frames (502), and the ends of the three tension springs (503) are respectively connected to the bottom of the water accumulation installation cylinder (201); pull-back ropes (504) are fixedly mounted on the three tension spring frames (502), and the three pull-back ropes (504) respectively pass through three through holes on the sleeve inner cylinder (202); the other ends of the three pull-back ropes (504) are twisted and gathered into a single rope.
7. A high-pressure boiler drum level gauge according to claim 6, characterized in that: The floating control member (5) further comprises: an on-off control ring (505), the on-off control ring (505) being fixedly sleeved on the floating control block (501); the on-off control ring (505) being located inside the sliding shielding cylinder (401); and the on-off control ring (505) being used for lifting and pushing to control the movement of the lifting and switching magnet ring (402).
8. The high-pressure boiler drum level gauge according to claim 1, characterized in that: The flow limiting device (7) comprises: a flow limiting and limiting ring (701) and a valve sheet (702); the flow limiting and limiting ring (701) is fixedly sleeved inside the drum connecting pipe (102); a circle of valve sheets (702) is fixedly installed inside the flow limiting and limiting ring (701); the circle of valve sheets (702) are all installed obliquely; the valve sheets (702) are used for one-way flow limiting of hot water inside the liquid level installation pipe (101); and the valve sheets (702) are elastic thin sheet structures.