CN112963567A - Automatic drain valve for preventing oil discharge of organic heat carrier furnace - Google Patents

Automatic drain valve for preventing oil discharge of organic heat carrier furnace Download PDF

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Publication number
CN112963567A
CN112963567A CN202110126180.8A CN202110126180A CN112963567A CN 112963567 A CN112963567 A CN 112963567A CN 202110126180 A CN202110126180 A CN 202110126180A CN 112963567 A CN112963567 A CN 112963567A
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CN
China
Prior art keywords
flow passage
valve
valve body
heat carrier
organic heat
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Granted
Application number
CN202110126180.8A
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Chinese (zh)
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CN112963567B (en
Inventor
张琳
沈彦儒
丁宏
孙小明
金海鸥
许伟刚
卜诗
柳林
许芳
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Changzhou Energy Equipment Co ltd
Changzhou University
Original Assignee
CHANGZHOU ENERGY ENGINEERING CO LTD
Changzhou University
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Priority to CN202110126180.8A priority Critical patent/CN112963567B/en
Publication of CN112963567A publication Critical patent/CN112963567A/en
Application granted granted Critical
Publication of CN112963567B publication Critical patent/CN112963567B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
    • F16K31/20—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve
    • F16K31/22—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float actuating a lift valve with the float rigidly connected to the valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/10—Means for additional adjustment of the rate of flow

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)
  • Details Of Valves (AREA)

Abstract

The invention provides an automatic drain valve for preventing oil discharge of an organic heat carrier furnace, which comprises a valve body, a ball body structure, a floating body and a stop block, wherein the specific gravity of the floating body is between that of an organic heat carrier and water, and the ball body structure is also fixedly provided with a valve rod for driving the ball body structure to rotate so as to enable an inner flow passage and an outer flow passage to be staggered. The invention utilizes the density difference principle, effectively drains water when meeting water through reasonably matching the design of the ball body and the floating body, closes the drainage valve when the water is drained completely and realizes the automatic drainage operation of the valve body, and simultaneously designs the valve rod for manual control to perform manual operation closing and resetting when impurities exist by visual inspection.

Description

Automatic drain valve for preventing oil discharge of organic heat carrier furnace
Technical Field
The invention relates to boiler equipment, in particular to the technical field of boiler valves, and particularly relates to an automatic drain valve for preventing oil discharge of an organic heat carrier furnace.
Background
In the oil boiling and dehydration process of the organic heat carrier furnace, part of water vapor is condensed and accumulated at the lower parts of the expansion tank, the oil storage tank and the like, and if the water vapor is not condensed in time, the mixture is prevented from being back mixed into the system when the oil is supplemented to a heat supply system of the organic heat carrier furnace. The corrosion of organic acid in the organic heat carrier to metal is aggravated in the operation of the organic heat carrier furnace, and the water is gradually gasified to induce oil injection accidents.
The expansion tank is usually arranged at the highest point of the system, so that the system also has other important functions such as the evacuation of light components in newly filled products and low-boiling-point substances generated in operation, supplementary evaporation and operation loss, nitrogen sealing and the like besides the heat expansion amount of the heat conduction liquid. The oil storage tank is also called as a low-level tank, and the expansion tank in the heat conduction oil furnace running system is used for compensating volume change of heat conduction oil caused by temperature change, so that the pressure of a system heat carrier is stabilized, and the system can be assisted in dehydration and steam exhaust, so that the expansion tank is arranged at a position higher than other equipment or pipelines of the system by 1.5-2M, and the expansion tank is kept in a high liquid level state during normal work.
When the liquid phase organic heat carrier containing moisture is heated, the moisture in the liquid phase organic heat carrier is quickly vaporized in a short time, and the pressure is suddenly increased, so that the heating furnace is over-pressurized to cause explosion. Therefore, the moisture in the system is discharged in time, which is very important for the normal operation of the system.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the invention provides the automatic drain valve for preventing oil discharge of the organic heat carrier furnace, which effectively and automatically drains water by utilizing the density difference principle in the oil boiling and dewatering process.
The technical scheme adopted by the invention for solving the technical problems is as follows: an automatic drain valve for preventing oil discharge of an organic heat carrier furnace is arranged at the bottoms of an oil storage tank and an expansion tank of an organic heat carrier furnace system and comprises a valve body, the valve body is internally provided with an outer flow passage which is communicated up and down, a ball structure which is rotatably connected in the flow passage is arranged in the corresponding flow passage in the valve body, the ball structure is internally provided with an inner flow passage penetrating through the ball structure, a floating body is arranged in the inner flow passage of the ball structure in a floating manner, the valve body is provided with a stop block which is protruded on the inner wall of the outer flow passage above the floating body and used for preventing the floating body from floating upwards excessively to block the connecting end surface of the upper end of the inner flow passage and the outer flow passage, the length of the floating body along the direction of the inner flow passage of the spherical structure is less than that of the inner flow passage, the outer diameter of the floating body is greater than the minimum inner diameter of the flow passage of the spherical structure, the specific gravity of the floating body is between the organic heat carrier and water, and the ball body structure is also fixed with a valve rod which drives the ball body structure to rotate so as to enable the inner flow passage and the outer flow passage to be staggered.
In the scheme, the density difference principle is skillfully utilized, the floating body with the specific gravity between the organic heat carrier and the water is designed, when water exists in the drain valve, the floating body floats in the water, the inner flow channel is communicated with the outer flow channel, and the water is discharged from the upper part of the outer flow channel after passing through the inner flow channel from the lower part of the outer flow channel. When the water in the drain valve is drained completely, the floating body sinks to block the communication end face of the inner flow passage and the outer flow passage, and the drainage is closed, so that the automatic drainage of the drain valve is realized. Meanwhile, the rotatable valve rod drives the ball body structure to rotate, so that the inner flow passage and the outer flow passage are staggered, and manual closing and drainage are realized.
Furthermore, in order to facilitate the valve rod to control the ball structure, a concave cavity is formed in the position, in contact with the valve body, of the outer surface of the ball structure, a fixed block is embedded and fixed in the concave cavity in a matched mode, one end of the valve rod is fixed with the fixed block, and a handle is fixed to the other section of the valve rod.
Further, the valve body adopts split type structure, the valve body from last valve body, well valve body and the lower valve body of including fixed connection down, the cooperation of spheroid structure rotate to connect in well valve body, the protruding upper end of spheroid structure and stretch into in the valve body, in the lower extreme protrusion and stretch into down the valve body, the stop block protrusion set up on the outer runner inner wall of last valve body.
Preferably, the middle valve body is provided with a threaded hole corresponding to the position of the cavity of the ball structure, a pressing block is connected with the threaded hole in an internal thread manner, the valve rod is connected in the pressing block in a penetrating and rotating manner, the front end of the valve rod extends out of the pressing block and is connected with the fixing block, and the front end face of the pressing block and the rear end face of the fixing block are screwed down along with the threads of the pressing block and the threaded hole to be tightly pressed and fixed.
Preferably, the inner flow passage of the sphere structure is in an annular structure with an inwards concave surface.
The oil-discharge-preventing automatic drain valve for the organic heat carrier furnace has the beneficial effects that the density difference principle is utilized, the ball body and the floating body are reasonably matched and designed, water is effectively drained when the ball body and the floating body meet water, the floating body sinks to close the drain valve when the water is drained completely, the automatic drain operation of the valve body is realized, and meanwhile, the valve rod for manual control is also designed, and the manual operation closing and resetting are carried out when impurities exist through visual inspection.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of the preferred embodiment of the present invention in the absence of water.
Fig. 2 is a schematic diagram of the structure of the preferred embodiment of the present invention in the presence of water.
Fig. 3 is a schematic structural diagram of the preferred embodiment of the present invention in manual closing.
In the figure, the valve comprises an upper valve body 1, a middle valve body 2, a lower valve body 3, an outer flow passage 5, a ball structure 6, a floating body 7, an inner flow passage 8, a stop block 9, a valve rod 10, a handle 11, a pressing block 12 and a fixed block.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Fig. 1 to 3 show an automatic drain valve for preventing oil drainage of an organic heat carrier furnace, which is a preferred embodiment of the invention. The drain valve is arranged at the bottoms of an oil storage tank and an expansion tank of an organic heat carrier furnace system and comprises a valve body, and an outer flow passage 4 is formed in the valve body in a vertically through mode. The valve body adopts split type structure, and the valve body is from last to including fixed connection's last valve body 1, well valve body 2 and lower valve body 3 down.
A ball structure 5 which is rotatably connected in the flow passage is arranged in the valve body corresponding to the flow passage. The ball structure 5 is matched and rotationally connected in the middle valve body 2. The upper end of the ball structure 5 protrudes and extends into the upper valve body 1, and the lower end protrudes and extends into the lower valve body 3. An inner flow passage 7 penetrates through the spherical structure 5 in the spherical structure 5, and a floating body 6 is arranged in the inner flow passage 7 of the spherical structure 5 in a floating manner. The length of the floating body 6 along the direction of the inner flow passage 7 of the spherical structure 5 is less than that of the inner flow passage 7, the outer diameter of the floating body 6 is greater than the minimum inner diameter of the inner flow passage 7 of the spherical structure 5, and the specific gravity of the floating body 6 is between the organic heat carrier and water. The inner wall of the outer flow passage 4 above the floating body 6 corresponding to the valve body is protruded with a stop block 8 for preventing the floating body 6 from floating upwards excessively to block the connecting end surface of the upper end of the inner flow passage 7 and the outer flow passage 4, and the stop block 8 is convexly arranged on the inner wall of the outer flow passage 4 of the upper valve body 1. The design of the stop block 8 limits the uppermost position of the floating body 6 to ensure that the floating body 6 floats to the highest position, so that a gap for discharging liquid is reserved between the upper end of the inner flow passage 7 and the outer flow passage 4, and the normal liquid discharging operation is facilitated. By the design, when the inner flow passage 7 is opposite to and communicated with the outer flow passage 4, the floating body 6 can move up and down along the inner flow passage 7 under the buoyancy action of liquid in the flow passage valve body, and moves up to the position of the stop block 8 and down to the position of the minimum inner diameter of the inner flow passage 7. Usually, the inner flow passage 7 of the spherical structure 5 is a ring structure with a concave surface, and the lowest end position of the downward movement of the floating body 6 is the lower end surface of the inner flow passage 7.
In the scheme, a valve rod 9 which drives the ball structure 5 to rotate so as to enable the inner flow passage 7 and the outer flow passage 4 to be staggered is further fixed on the ball structure 5. In order to facilitate the valve rod 9 to control the ball structure 5, a concave cavity is arranged at the contact position of the outer surface of the ball structure 5 and the valve body, a fixed block 12 is embedded and fixed in the concave cavity in a matching way, one end of the valve rod 9 is fixed with the fixed block 12, and a handle 10 is fixed at the other section of the valve rod. The middle valve body 2 is provided with a threaded hole corresponding to the cavity of the ball structure 5, a pressing block 11 is connected with the threaded hole in an internal thread mode, the valve rod 9 is connected in the pressing block 11 in a penetrating and rotating mode, the front end of the valve rod 9 extends out of the pressing block 11 and is connected with a fixing block 12, and the front end face of the pressing block 11 and the tail end face of the fixing block 12 are screwed down along with the threads of the pressing block 11 and the threaded hole to.
The valve rod 9 is designed to play a role in manually controlling the drain valve when in use. When the valve works normally, the outer flow passage 4 is communicated with the inner flow passage 7, and the valve rod 9 keeps the position. When the drainage valve needs to be manually controlled to be closed, the valve rod 9 is rotated to drive the ball body structure 5 to rotate, the inner flow passage 7 and the outer flow passage 4 are staggered, the upper channel and the lower channel of the drainage valve are not communicated, and the closing and the interception of the drainage valve are realized. In the process, when the pressing block 11 is screwed, the pressing block can be pressed on the surface of the fixed block 12 and applies pressure to the fixed block 12, so that the fixed block 12 is fixed in position, and correspondingly, the ball structure 5 matched with the fixed block 12 is also approximately fixed in position relative to the valve body. When the position of the ball structure 5 needs to be adjusted, the valve rod 9 rotates, the valve rod 9 drives the fixing block 12 and the ball structure 5 to rotate simultaneously, in the process, the pressing block 11 applies force to the ball body in the direction perpendicular to the tangent plane of the ball body, the valve rod 9 drives the ball body to rotate in the radial direction around the ball body, and the pressure of the pressing block 11 does not interfere the rotation of the ball structure 5 relative to the central line of the valve rod 9 after reasonable design.
The automatic drain valve for preventing oil discharge of the organic heat carrier furnace skillfully utilizes the density difference principle and designs the floating body 6 with the specific gravity between the organic heat carrier and water. As shown in fig. 2, when water is present in the drain valve, the floating body 6 floats in the water, the inner flow path 7 is communicated with the outer flow path 4, and the water passes through the inner flow path 7 from below the outer flow path 4 and is discharged from above the outer flow path 4. As shown in fig. 1, when the water in the drain valve is drained, the floating body 6 sinks to block the communication end surface of the inner flow passage 7 and the outer flow passage 4, and the water drainage is closed, so that the automatic water drainage of the drain valve is realized. Simultaneously, as shown in fig. 3, in impurity gets into the drain valve from outer runner 4 lower extreme, body 6 can not closely laminate the spheroid under the influence of impurity and accomplish the operation of closing the drainage, finds the organic heat carrier outflow through the eye observation at the discharge section of drain valve, and accessible rotation valve rod 9 drives spheroid structure 5 and rotates 180 this moment for interior runner 7 misplaces with outer runner 4, realizes the manual drainage of closing, carries out closing and resetting of manual operation drain valve.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (5)

1. The utility model provides an organic heat carrier heater prevents oil extraction automatic drain valve, installs in the oil storage tank and the expansion tank bottom of organic heat carrier heater system, its characterized in that: the water-saving valve comprises a valve body, an outer flow passage (4) is arranged in the valve body in a vertically through mode, a ball structure (5) rotatably connected in the flow passage is arranged in the valve body in a corresponding flow passage, the ball structure (5) penetrates through the ball structure (5) and is provided with an inner flow passage (7), a floating body (6) is arranged in the inner flow passage (7) of the ball structure (5) in a floating mode, a stop block (8) for preventing the floating body (6) from floating upwards excessively to block the connecting end face of the upper end of the inner flow passage (7) and the outer flow passage (4) is arranged on the inner wall of the outer flow passage (4) above the valve body corresponding to the floating body (6) in a protruding mode, the length of the floating body (6) along the direction of the inner flow passage (7) of the ball structure (5) is smaller than that of the inner flow passage (7), the outer diameter of the floating body (6) is larger than the minimum inner diameter, and a valve rod (9) which drives the spherical structure (5) to rotate so as to enable the inner flow passage (7) and the outer flow passage (4) to be staggered is further fixed on the spherical structure (5).
2. The automatic drain valve for preventing oil drainage of the organic heat carrier furnace as claimed in claim 1, wherein: the ball valve is characterized in that a concave cavity is formed in the position, in contact with the valve body, of the outer surface of the ball structure (5), a fixed block (12) is embedded and fixed in the concave cavity in a matched mode, one end of the valve rod (9) is fixed to the fixed block (12), and a handle (10) is fixed to the other section of the valve rod.
3. The automatic drain valve for preventing oil drainage of the organic heat carrier furnace, according to claim 2, is characterized in that: the valve body from last to including fixed connection last valve body (1), well valve body (2) and lower valve body (3) down, spheroid structure (5) cooperation swivelling joint in well valve body (2), in spheroid structure (5) upper end protrusion stretched into in last valve body (1), the lower extreme protrusion stretched into down valve body (3), stop block (8) protrusion set up on the outer runner (4) inner wall of last valve body (1).
4. The automatic drain valve for preventing oil drainage of the organic heat carrier furnace, according to claim 3, is characterized in that: well valve body (2) cavity position department that corresponds spheroid structure (5) screw hole has, screw hole female connection have briquetting (11), valve rod (9) run through to rotate to connect in briquetting (11) and valve rod (9) front end stretch out briquetting (11) and be connected with fixed block (12), briquetting (11) preceding terminal surface and fixed block (12) tail end face along with briquetting (11) and screw thread tightening and the terminal surface compresses tightly fixedly.
5. The automatic drain valve for preventing oil drainage of the organic heat carrier furnace as claimed in claim 1, wherein: the inner flow passage (7) of the sphere structure (5) is of an annular structure with an inwards concave surface.
CN202110126180.8A 2021-01-29 2021-01-29 Automatic drain valve for preventing oil discharge of organic heat carrier furnace Active CN112963567B (en)

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Application Number Priority Date Filing Date Title
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CN112963567B CN112963567B (en) 2022-06-24

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101275687A (en) * 2008-05-15 2008-10-01 北京弘泰汇明能源技术有限责任公司 Density contrast automatic fluid discharge valve
CN102606794A (en) * 2012-02-29 2012-07-25 山东圣威新能源有限公司 Novel automatic exhaust valve for heating process systems
CN104482282A (en) * 2014-12-18 2015-04-01 湖南工业大学 Liquid-phase oil-drain-prevention automatic water discharge valve of heat supply system of liquid-phase organic heat carrier boiler
CN204828748U (en) * 2015-07-29 2015-12-02 浙江有氟密阀门有限公司 Three formula pottery ball valves
US20170082214A1 (en) * 2015-09-21 2017-03-23 Commonwealth Oilfield Products, Llc Flow valve apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101275687A (en) * 2008-05-15 2008-10-01 北京弘泰汇明能源技术有限责任公司 Density contrast automatic fluid discharge valve
CN102606794A (en) * 2012-02-29 2012-07-25 山东圣威新能源有限公司 Novel automatic exhaust valve for heating process systems
CN104482282A (en) * 2014-12-18 2015-04-01 湖南工业大学 Liquid-phase oil-drain-prevention automatic water discharge valve of heat supply system of liquid-phase organic heat carrier boiler
CN204828748U (en) * 2015-07-29 2015-12-02 浙江有氟密阀门有限公司 Three formula pottery ball valves
US20170082214A1 (en) * 2015-09-21 2017-03-23 Commonwealth Oilfield Products, Llc Flow valve apparatus

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Address after: 21 Gehu Middle Road, Wujin District, Changzhou City, Jiangsu Province

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