CN113898748A - High-temperature and high-pressure valve for ultra-supercritical unit - Google Patents

High-temperature and high-pressure valve for ultra-supercritical unit Download PDF

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Publication number
CN113898748A
CN113898748A CN202110975530.8A CN202110975530A CN113898748A CN 113898748 A CN113898748 A CN 113898748A CN 202110975530 A CN202110975530 A CN 202110975530A CN 113898748 A CN113898748 A CN 113898748A
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CN
China
Prior art keywords
fixedly connected
bevel gear
cavity
block
flashboard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110975530.8A
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Chinese (zh)
Inventor
孙晋
汤雯娟
朱金华
高明
张路军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Shengye Valve Co ltd
Original Assignee
Jiangsu Shengye Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Shengye Valve Co ltd filed Critical Jiangsu Shengye Valve Co ltd
Priority to CN202110975530.8A priority Critical patent/CN113898748A/en
Publication of CN113898748A publication Critical patent/CN113898748A/en
Pending legal-status Critical Current

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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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0209—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor the valve having a particular passage, e.g. provided with a filter, throttle or safety device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • 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
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
    • F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0025—Electrical or magnetic means
    • F16K37/005—Electrical or magnetic means for measuring fluid parameters

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Details Of Valves (AREA)

Abstract

The invention discloses a high-temperature and high-pressure valve for an ultra-supercritical unit, which comprises a valve body and a flashboard, wherein a flow passage is arranged inside the valve body, the valve body is connected with a limiting strip, the limiting strip is in clearance fit with the flashboard, radiating fins are arranged on the contact surfaces of the valve body and the limiting strip with the flashboard, the flashboard is provided with a circulation hole for butting with the flow passage of the valve body, the valve body comprises two valve pieces, the end parts of the valve pieces are provided with connecting bosses, the connecting bosses of the two valve pieces are fixed by fastening bolts after being butted, a flashboard is arranged between the butt joint end surfaces of the connecting bosses, two holes for embedding a sealing gasket and a sealing ring are arranged in the flashboard, the arrangement of the radiating fins solves the problem that nearly one hundred ultra-supercritical units with the grade of 600 ℃ are put into operation in China at present, the valve plate and the sealing material of the valve are easily affected by high temperature when the valve bears high stress load for long-term operation at such high temperature.

Description

High-temperature and high-pressure valve for ultra-supercritical unit
Technical Field
The invention relates to the technical field of valves, in particular to a high-temperature and high-pressure valve for an ultra-supercritical unit.
Background
The critical parameters of water are: tc is 374.15 deg.C, and Pc is 22.129 MPa. At the critical point and in the supercritical state, no evaporation phenomenon is seen, and the water is directly changed from a liquid state to a vapor state under the condition of keeping a single phase. The range where the pressure is higher than the critical point Pc is generally referred to as the supercritical region, and the range where the pressure is lower than Pc is generally referred to as the subcritical region. Generally, when the vapor pressure is increased to 25MPa, it is called ultra-supercritical.
With the rapid growth of the domestic power station market in recent years, the requirements on the power station efficiency and the environmental protection emission are more and more strict, the ultra supercritical is the first-choice steam inlet parameter of a domestic steam turbine with more than 600MW, nearly one hundred ultra supercritical units with the grade of 600 ℃ are put into operation in China at present, bear high stress load at the high temperature and work for a long time, and a valve plate and a sealing material of the valve are easily influenced by the high temperature.
Disclosure of Invention
The invention provides a high-temperature and high-pressure valve for an ultra-supercritical unit, which is used for solving the technical problems that nearly one hundred ultra-supercritical units with the grade of 600 ℃ are put into operation in China at present, high stress load is borne at the high temperature for long-term work, and a valve plate and a sealing material of the valve are easily influenced by the high temperature.
In order to solve the technical problem, the invention discloses a high-temperature and high-pressure valve for an ultra-supercritical unit, which comprises a valve body and a flashboard, wherein a flow channel is arranged in the valve body, the valve body is connected with a limiting strip, the limiting strip is in clearance fit with the flashboard, radiating fins are arranged on the contact surfaces of the valve body and the limiting strip and the flashboard, and a flow hole for butting with the flow channel of the valve body is formed in the flashboard.
Preferably, the valve body comprises two valve pieces, the end parts of the valve pieces are provided with connecting bosses, the connecting bosses of the two valve pieces are fixed by fastening bolts after being butted, and a flashboard is arranged between the butted end surfaces of the connecting bosses.
Preferably, the butt joint end face of the connecting boss is in threaded connection with the limiting strip through a fastening bolt, and the inner space of the limiting strip is matched with the width of the flashboard.
Preferably, the material of the gate plate is chromium molybdenum cast steel.
Preferably, be provided with two holes that are used for inlaying sealed pad and sealing washer in the flashboard, be provided with a round hole in the middle of the sealing washer for but the runner butt joint of valve body, sealed pad is solid construction.
Preferably, the sealing gasket and the sealing ring are made of nickel-based alloy.
Preferably, still include automatic switching device, automatic switching device with valve body and flashboard can dismantle the connection, automatic switching device includes:
the switch shell is provided with a first baffle plate at the upper side inside the switch shell, a first power cavity is arranged between the upper end of the first baffle plate and the upper end inside the switch shell, a third power cavity and two second power cavities are arranged between the lower end of the first baffle plate and the lower end inside the switch shell, the second power cavity is symmetrically arranged on the left side and the right side of the third power cavity, a second baffle plate is arranged between the second power cavity and the third power cavity, a first through hole is formed in the left end and the right end of the second baffle plate in a penetrating mode, the second power cavity is communicated with the third power cavity through the first through hole, a second through hole is formed in the lower end of the switch shell in a penetrating mode from top to bottom, and the second through hole is communicated with the third power cavity from top to bottom;
the first motor is arranged inside the first power cavity, the first motor is fixedly connected with a first threaded sleeve, the first threaded sleeve is fixedly connected with a first bevel gear, the left side and the right side of the first bevel gear are symmetrically meshed with a second bevel gear, the second bevel gear is fixedly connected with a first rotating shaft, the first rotating shaft is fixedly connected with a twelfth bevel gear, the twelfth bevel gear is meshed with a third bevel gear, the third bevel gear is fixedly connected with a second rotating shaft, and the second rotating shaft penetrates through the first baffle and enters the second power cavity to be fixedly connected with a fourth bevel gear;
the first support rods are fixedly connected with one ends, close to the second power cavity, of the second baffle plates respectively, the first support rods are rotatably connected with a third rotating shaft, the third rotating shaft is fixedly connected with a first gear and a first guide block, a first sliding groove is formed in the first guide block and is slidably connected with a first sliding shaft, and a first spring is fixedly arranged between the first guide block and the second baffle plates;
the first guide rods are respectively connected with one end of the sliding shaft in a rotating mode, and one end, far away from the first sliding shaft, of each first guide rod penetrates through the first through hole and a first clamping block in the power cavity III to be fixedly connected;
the two first fixing blocks are fixedly connected with one ends, close to the power cavity III, of the second baffle plates respectively, a second sliding groove is formed in the first fixing blocks, the second sliding groove is connected with a second sliding shaft in a sliding mode, the second sliding shaft is fixedly connected with a second guide rod, the second guide rod is fixedly connected with a second clamping block, and a telescopic rod is arranged between the second guide rod and the first guide rod;
the two support rods II are respectively fixedly connected with one end, close to the power cavity II, of the baffle II, and are arranged on the upper side of the support rod I, the support rod II is rotatably connected with a rotating shaft IV, the rotating shaft IV is fixedly connected with a bevel gear V and a sector gear, the bevel gear V is meshed with the bevel gear IV, and the sector gear is meshed with the gear I and the rack;
the second fixing block penetrates through the second through hole to be in sliding connection with the second through hole, a mounting groove is formed in the lower end of the second fixing block, the mounting groove and the flashboard are fixedly connected through matching of bolts and nuts, clamping grooves are symmetrically formed in the left side and the right side of the upper portion of the second fixing block, the clamping grooves are matched with the first clamping blocks, a first threaded rod is fixedly connected to the upper end of the second fixing block, and the first threaded rod is in threaded connection with the first threaded sleeve;
the two pull ropes are symmetrically arranged on the left side and the right side of the upper end of the second fixing block, one end, far away from the second fixing block, of each pull rope is fixedly connected with a third fixing block, the third fixing block is fixedly connected with the rack, the middle of each pull rope is connected with a guide wheel, the guide wheel is rotatably connected with a third support rod, and the third support rod is fixedly connected with the first baffle;
the two fixing blocks IV are symmetrically arranged on the left side and the right side of the lower end of the first baffle plate, the fixing blocks IV are fixedly connected with a second spring, the second spring is fixedly connected with a third fixing block, and the third fixing block is slidably connected with the first baffle plate;
the connecting block, the connecting block symmetry sets up the lower extreme left and right sides of switch shell, the connecting block with the connection can be dismantled to the valve body.
Preferably, still including filtering cleaning device, filtering cleaning device includes filter equipment and a plurality of cleaning device, filter equipment's inside is equipped with filter chamber and installation cavity, the installation cavity with the connection can be dismantled to the valve body, the inside of filter chamber is equipped with the filter screen, the filter chamber with the runner intercommunication, the inside four cleaning device that are equipped with of filter equipment, four cleaning device symmetries set up the upper and lower both ends left and right sides of filter chamber, and the cleaning device at upper and lower both ends corresponds the setting and is in the left and right sides of filter screen is connected with fixed axle five between the cleaning device of the left and right sides.
Preferably, the filtering device comprises:
the filter device comprises a mounting shell, wherein a filter cavity and a mounting cavity are arranged at the left end and the right end of the mounting shell in a penetrating manner, the filter cavity is communicated with the mounting cavity from left to right, a first working cavity, a second working cavity and a third working cavity are symmetrically arranged at the upper side and the lower side of the filter cavity, a fourth working cavity is symmetrically arranged at the upper side and the lower side of the mounting cavity, the first working cavity, the second working cavity, the third working cavity and the fourth working cavity are sequentially communicated from left to right, and the fourth working cavity is communicated with the mounting cavity;
the two motors II are respectively arranged inside the working cavity III and fixedly connected with the first fixed shaft, the first fixed shaft is fixedly connected with a sixth bevel gear, the left side of the sixth bevel gear is engaged with a seventh bevel gear, the right side of the bevel gear six is engaged with a bevel gear eight, the bevel gear seven is fixedly connected with the fixed shaft two, a third spring is fixedly sleeved on the part, positioned in the third working cavity, of the second fixing shaft, the second fixing shaft penetrates through the second working cavity to enter the first working cavity, the second fixed shaft is fixedly connected with a second gear in the second working cavity, the second gear is meshed with a third gear, the third gear is fixedly connected with the fifth fixed shaft, the second fixed shaft is fixedly connected with the first magnetic block in the first working cavity, the first magnetic block and the first electromagnetic block are arranged correspondingly, and the first electromagnetic block is arranged inside the first working cavity;
the two mounting blocks are respectively connected with the working cavity IV in a sliding mode in the vertical direction, the mounting blocks are fixedly connected with a second threaded sleeve, the second threaded sleeve is in threaded connection with a second threaded rod, the second threaded rod is fixedly connected with a ninth bevel gear, the left side of the ninth bevel gear is meshed with a tenth bevel gear, and the right side of the ninth bevel gear is meshed with a eleventh bevel gear;
the three fixing shafts are fixedly connected with the tenth bevel gear and the eleventh bevel gear respectively, a matching groove is formed in the left end of the third fixing shaft, a second magnetic block is fixedly connected to the right end of the third fixing shaft, the second magnetic block corresponds to the second electromagnetic block, the second electromagnetic block is arranged inside the fourth working cavity, the matching groove is matched with the fourth fixing shaft, the fourth fixing shaft is fixedly connected with the eighth bevel gear, and a fourth spring is fixedly arranged between the third fixing shaft and the fourth fixing shaft.
Preferably, the cleaning device includes:
the cleaning shell is internally provided with a power cavity IV and a cleaning groove, the cleaning groove is vertically communicated with the power cavity IV through an opening, and the cleaning groove is communicated with the filtering cavity;
the disc is arranged inside the power cavity IV and fixedly connected with the fixed shaft IV, the disc is symmetrically and eccentrically provided with eccentric shafts, the eccentric shafts are matched with a connecting groove of a grooved pulley, the grooved pulley is fixedly connected with a gear IV through a connecting shaft, the gear IV is meshed with a rack II, and the rack II penetrates through the opening to be rotatably connected with the cleaning sleeve;
and the two connecting plates are respectively and fixedly connected with the second rack, and a fifth spring is fixedly arranged between the connecting plate and the fourth power cavity.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the valve in an open state according to the present invention;
FIG. 3 is a schematic view of the valve assembly of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 2;
FIG. 5 is a schematic structural view of the valve of the present invention in a closed state;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
fig. 7 is a schematic structural diagram of the middle gate plate of the valve.
FIG. 8 is a schematic view of the automatic opening and closing apparatus of the present invention;
FIG. 9 is a schematic view of the filter cleaning apparatus of the present invention;
FIG. 10 is a side view of the cleaning device of the present invention.
In the figure: 1. a valve body; 101. a valve member; 1011. connecting the bosses; 102. a flow channel; 2. a baffle plate; 201. a flow-through hole; 202. a gasket; 203. a seal ring; 3. fastening a bolt; 4. a limiting strip; 5. a heat sink; 6. a switch housing; 601. a first baffle plate; 602. a first power cavity; 603. a first motor; 604. a threaded sleeve; 605. a first bevel gear; 606. a second bevel gear; 607. rotating a first shaft; 608. twelve bevel gears; 609. connecting blocks; 610. a third bevel gear; 611. a second rotating shaft; 612. a fourth bevel gear; 613. rotating the shaft four; 614. a fifth bevel gear; 615. a sector gear; 616. a second baffle plate; 6161. a first through hole; 617. a second power cavity; 618. a third power cavity; 619. a second through hole; 620. a first gear; 621. a third rotating shaft; 622. a first supporting rod; 623. a second supporting rod; 624. a guide block; 6241. a first sliding chute; 625. a first sliding shaft; 626. a first guide rod; 627. a first clamping block; 628. a first spring; 629. a first fixed block; 6291. a second chute; 630. a second sliding shaft; 631. a second guide rod; 632. a telescopic rod; 633. a second clamping block; 634. a rack; 635. a third fixed block; 636. pulling a rope; 637. a third supporting rod; 638. a guide wheel; 639. a second spring; 640. a fourth fixed block; 641. a first threaded rod; 642. a second fixed block; 6421. a card slot; 6422. mounting grooves; 643. a nut; 7. mounting a shell; 701. a mounting cavity; 702. a filter chamber; 703. a second working cavity; 704. a working cavity III; 705. a working cavity IV; 706. a first working cavity; 707. a second motor; 708. a first fixed shaft; 709. a sixth bevel gear; 710. a bevel gear seven; 711. eighthly, a bevel gear; 712. a second fixed shaft; 713. a first magnetic block; 714. a first electromagnetic block; 715. a third spring; 716. a second gear; 717. a third gear; 718. fixing a shaft IV; 719. a fourth spring; 720. fixing a shaft III; 721. a mating groove; 722. ten bevel gears; 723. nine bevel gears; 724. a second threaded rod; 725. a second thread sleeve; 726. mounting blocks; 727. eleven bevel gears; 728. a second magnetic block; 729. a second electromagnetic block; 730. fixing a shaft V; 731. a filter screen; 8. cleaning the shell; 801. a power cavity IV; 802. a disc; 803. an eccentric shaft; 804. a grooved wheel; 8041. connecting grooves; 805. a connecting shaft; 806. a fourth gear; 807. a second rack; 808. a connecting plate; 809. a fifth spring; 810. cleaning the sleeve; 811. an opening; 812. and cleaning the tank.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
The invention provides the following examples
Example 1
The embodiment of the invention provides a high-temperature and high-pressure valve for an ultra-supercritical unit, which comprises a valve body 1 and a flashboard 2, wherein a flow channel 102 is arranged inside the valve body 1, the valve body 1 is connected with a limiting strip 4, the limiting strip 4 is in clearance fit with the flashboard 2, radiating fins 5 are arranged on the contact surfaces of the valve body 1 and the limiting strip 4 and the flashboard 2, and a circulation hole 201 for butting with the flow channel 102 of the valve body 1 is arranged on the flashboard 2;
the valve body 1 comprises two valve members 101, the end parts of the valve members 101 are provided with connecting bosses 1011, the connecting bosses 1011 of the two valve members 101 are fixed by fastening bolts 3 after being butted, and a flashboard 2 is arranged between the butted end surfaces of the connecting bosses 1011;
the butt joint end face of the connecting boss 1011 is in threaded connection with the limiting strip 4 through a fastening bolt 3, and the inner distance of the limiting strip 4 is matched with the width of the flashboard 2;
the gate plate 2 is made of chromium molybdenum cast steel;
two holes for embedding a sealing gasket 202 and a sealing ring 203 are formed in the flashboard 2, a round hole is formed in the middle of the sealing ring 203 and used for butt joint of a flow passage of the valve body 1, and the sealing gasket 202 is of a solid structure;
the sealing gasket 202 and the sealing ring 203 are made of nickel-based alloy.
The beneficial effects of the above technical scheme are:
after the connecting bosses 1011 of two valve bodies 1 are butted, the two valve bodies are fixedly connected through the fastening bolts 3, the flashboard 1 is clamped between the two connecting bosses 1011, when the circulation hole 201 on the flashboard 2 corresponds to the runner 102 of the inner cavity of the valve body, the valve is in an open state, when the circulation hole 201 on the flashboard 2 is staggered with the runner 102 of the inner cavity of the valve body, the valve is in a closed state, the butting end surface of the connecting boss 1011 is provided with the limit strip 4, the limit strip 4 arranged on the connecting boss 1011 can play a role in guiding the flashboard 2, the inner space of the limit strip 4 is adapted to the width of the flashboard 2, the limit strip 4 is in clearance fit with the flashboard 2, the flashboard 2 can slide along the direction of the limit strip 4, in order to improve the strength and the heat resistance of the flashboard 2, the material of the flashboard 2 is high-temperature nickel-based alloy, the shape of the flashboard 2 is regular, the processing is convenient, and can effectively reduce the cost of the valve, in order to further reduce the usage amount of the high-temperature nickel-based alloy, the gate plate 2 is made of chromium-molybdenum cast steel, a sealing gasket 22 arranged in the gate plate 2 is of a solid structure and is in butt joint with a flow passage of the valve body 1 to play a role in blocking and sealing, and meanwhile, the technical problem that nearly one hundred 600 ℃ ultra-supercritical units are put into operation in China at present, bear high stress load and work for a long time at such high temperature, and a valve plate and a sealing material of a valve are easily influenced by high temperature is solved by arranging the radiating fins 5.
Example 2
On the basis of the above embodiment 1, as shown in fig. 6, the automatic opening and closing device is further included, and the automatic opening and closing device is detachably connected to the valve body 1 and the shutter 2, and includes:
the switch shell 6 is provided with a first baffle 601 at the upper side inside the switch shell 6, a first power cavity 602 is arranged between the upper end of the first baffle 601 and the upper end inside the switch shell 6, a third power cavity 618 and two second power cavities 617 are arranged between the lower end of the first baffle 601 and the lower end inside the switch shell 6, the second power cavities 617 are symmetrically arranged at the left side and the right side of the third power cavity 618, a second baffle 616 is arranged between the second power cavity 617 and the third power cavity 618, the left end and the right end of the second baffle 616 are provided with a first through hole 6161 in a penetrating manner, the second power cavity 617 is communicated with the third power cavity 618 through the first through hole 6161, a second through hole 619 is arranged at the lower end of the switch shell 6 in a penetrating manner from top to bottom, and the second through hole 619 is communicated with the third power cavity 618 from top to bottom;
the motor I603 is arranged inside the power cavity I602, the motor I603 is fixedly connected with a threaded sleeve I604, the threaded sleeve I604 is fixedly connected with a bevel gear I605, bevel gears II 606 are symmetrically meshed with the left side and the right side of the bevel gear I605, the bevel gears II 606 are fixedly connected with a rotating shaft I607, the rotating shaft I607 is fixedly connected with a bevel gear II 608, the bevel gear II 608 is meshed with a bevel gear III 610, the bevel gear III 610 is fixedly connected with a rotating shaft II 611, and the rotating shaft II 611 penetrates through the baffle I601 to enter the power cavity II 617 and is fixedly connected with a bevel gear IV 612;
the two first support rods 622 are respectively fixedly connected with one end, close to the power cavity II 617, of the baffle II 616, the first support rods 622 are rotatably connected with a rotating shaft III 621, the rotating shaft III 621 is fixedly connected with a gear I620 and a guide block 624, a sliding groove I6241 is arranged on the guide block 624, the sliding groove I6241 is slidably connected with a sliding shaft I625, and a spring I628 is fixedly arranged between the guide block 624 and the baffle II 616;
the two first guide rods 626 are respectively and rotatably connected with the first sliding shaft 625, and one end, away from the first sliding shaft 625, of each first guide rod 626 penetrates through the first through hole 6161 and the first fixture block 627 in the power cavity III 618 to be fixedly connected;
the two first fixing blocks 629 are respectively fixedly connected with one end, close to the third power cavity 618, of the second baffle 616, the first fixing blocks 629 are provided with second sliding grooves 6291, the second sliding grooves 6291 are in sliding connection with second sliding shafts 630, the second sliding shafts 630 are fixedly connected with second guide rods 631, the second guide rods 631 are fixedly connected with second fixture blocks 633, and telescopic rods 632 are arranged between the second guide rods 631 and the first guide rods 626;
the two second support rods 623 are respectively fixedly connected with one end, close to the second power cavity 617, of the second baffle 616, the second support rods 623 are arranged on the upper sides of the first support rods 622, the second support rods 623 are rotatably connected with a fourth rotating shaft 613, the fourth rotating shaft 613 is fixedly connected with a fifth bevel gear 614 and a sector gear 615, the fifth bevel gear 614 is meshed with the fourth bevel gear 612, and the sector gear 615 is meshed with the first gear 620 and the rack 634;
a second fixing block 642, wherein the second fixing block 642 penetrates through the second through hole 619 to be slidably connected with the second through hole 619, a mounting groove 6422 is formed in the lower end of the second fixing block 642, the mounting groove 6422 is fixedly connected with the gate plate 2 through the matching of a bolt 643 and a nut 644, clamping grooves 6421 are symmetrically formed in the left side and the right side of the upper portion of the second fixing block 642, the clamping grooves 6421 are matched with the first clamping blocks 627, a first threaded rod 641 is fixedly connected to the upper end of the second fixing block 642, and the first threaded rod 641 is in threaded connection with the first threaded sleeve 604;
the two pull ropes 636 are symmetrically arranged on the left side and the right side of the upper end of the second fixed block 642, one end, far away from the second fixed block 642, of each pull rope 636 is fixedly connected with a third fixed block 635, the third fixed block 635 is fixedly connected with the rack 634, the middle of each pull rope 636 is connected with a guide wheel 638, each guide wheel 638 is rotatably connected with a third support rod 637, and each third support rod 637 is fixedly connected with the first baffle 601;
the two fixing blocks IV 640 are symmetrically arranged on the left side and the right side of the lower end of the first baffle 601, the fixing blocks IV 640 are fixedly connected with a second spring 639, the second spring 639 is fixedly connected with a third fixing block 635, and the third fixing block 635 is slidably connected with the first baffle 601;
and the connecting blocks 609 are symmetrically arranged on the left side and the right side of the lower end of the switch shell 6, and the connecting blocks 609 are detachably connected with the valve body 1.
The beneficial effects of the above technical scheme are: the opening and closing state of the valve body 1 is controlled by the movement of the flashboard 2, the flashboard 2 is moved upwards, the circulation hole 201 on the flashboard 2 is staggered with the flow channel 102 in the inner cavity of the valve body, the flashboard 2 is moved downwards, the circulation hole 201 on the flashboard 2 corresponds to the flow channel 102 in the inner cavity of the valve body, when the flashboard 2 is controlled to move upwards, the motor I603 is started, the motor I603 drives the threaded sleeve I604 to rotate, the threaded sleeve I604 drives the threaded rod I641 to move upwards, the fixed block II 642 to move upwards, the flashboard 2 is driven to move upwards, meanwhile, the threaded sleeve I604 drives the bevel gear I605 to rotate, the bevel gear I605 drives the bevel gear II 606 to rotate, the bevel gear II 606 drives the rotating shaft I607 to rotate, the rotating shaft I607 drives the bevel gear twelve 608 to rotate, the bevel gear twelve 608 drives the bevel gear III 610 to rotate, the rotating shaft III 610 drives the rotating shaft II 611 to rotate, and the bevel gear IV 612 to rotate, the bevel gear IV 612 drives the bevel gear V614 to rotate, the bevel gear V614 drives the rotating shaft IV 613 to rotate, the rotating shaft IV 613 drives the sector gear 615 to rotate, the sector gear 615 firstly drives the gear I620 to rotate, so that the guide rod I626 moves in the direction away from the fixed block II 642, the fixture block I627 is disengaged from the clamping groove 6421, meanwhile, the fixture block II 633 is disengaged from the upper end of the fixed block II 642, then the rack 634 is driven to move, the rack 634 drives the fixed block III 635 to move, the fixed block III 635 drives the fixed block II 642 to move upwards through the pull rope 636, the movement of the fixed block II 642 pulled by the pull rope 636 is kept stable, the pull rope 636 assists the threaded sleeve I604 and the threaded rod I641 to move upwards to the fixed block II 642, the stability of the upward moving process of the fixed block II 642 is improved, meanwhile, the sector gear 615 is arranged, and the gear I620 does not rotate in the moving process of the driving rack 634, after the circulation hole 201 on the gate plate 2 is staggered with the flow passage 102 of the inner cavity of the valve body, the first motor 603 stops working, the gate plate 2 is enabled to be higher in stability when in a closed state through the combined action of the pull rope 636, the first threaded sleeve 604 and the first threaded rod 641, when the gate plate 2 is controlled to move downwards, the first motor 603 rotates reversely, the second fixed block 642 moves downwards, the gate plate 2 is driven to move downwards, meanwhile, the sector gear 615 rotates reversely, firstly, the sector gear is meshed with the rack 634, the rack 634 is pushed to move, the third fixed block 635 does not pull the second fixed block 642, the smooth downward movement of the second fixed block 642 is ensured, then, the sector gear 615 is meshed with the first gear 620, the first gear 620 rotates, the first guide rod 626 moves towards the direction close to the second fixed block 642, the first guide rod 626 drives the telescopic rod 632 to move, the telescopic rod 632 drives the second guide rod 631 to move, the second guide rod 631 moves, the sliding connection between the second sliding shaft 630 and the second sliding groove 6201 plays a guiding role for the second sliding shaft 630, so that the first clamping block 627 is matched with the clamping groove 6421, the operation of the first motor 603 is stopped, the second fixing block 642 is fixed, meanwhile, the second clamping block 633 is in contact with the upper end of the second fixing block 642, the stability of the second fixing block 642 is further improved, finally, the stability is higher when the flashboard 2 is in an opening state, the second fixing block 642 is fixed with the flashboard 2 through the matching of the bolt 643 and the nut 644, and the connecting block 609 is detachably connected with the valve body 1, so that the purpose of conveniently detaching the automatic switching device is achieved, and the valve body 1 and the flashboard 2 are convenient to maintain and replace.
Example 3
On the basis of embodiment 1, as shown in fig. 7-8, still include and filter cleaning device, it includes filter equipment and a plurality of cleaning device to filter cleaning device, filter equipment's inside is equipped with filter chamber 702 and installation cavity 701, installation cavity 701 with valve body 1 can dismantle the connection, filter chamber 702's inside is equipped with filter screen 731, filter chamber 702 with runner 102 intercommunication, filter equipment is inside to be equipped with four cleaning device, four cleaning device symmetries set up the upper and lower both ends left and right sides of filter chamber 702, and the cleaning device at upper and lower both ends corresponds the setting and is in the left and right sides of filter screen 731, is connected with five fixed axles 730 between the cleaning device of left and right sides.
The filtering device includes:
the mounting structure comprises a mounting shell 7, wherein a filter cavity 702 and a mounting cavity 701 are arranged at the left end and the right end of the mounting shell 7 in a penetrating manner, the filter cavity 702 is communicated with the mounting cavity 701 from left to right, a first working cavity 706, a second working cavity 703 and a third working cavity 704 are symmetrically arranged at the upper side and the lower side of the filter cavity 702, a fourth working cavity 705 is symmetrically arranged at the upper side and the lower side of the mounting cavity 701, the first working cavity 706, the second working cavity 703, the third working cavity 704 and the fourth working cavity 705 are sequentially communicated from left to right, and the fourth working cavity 705 is communicated with the mounting cavity 701;
two motors 707, the two motors 707 are respectively arranged inside the working chamber three 704, the motor two 707 is fixedly connected with a fixed shaft one 708, the fixed shaft one 708 is fixedly connected with a bevel gear six 709, the left side of the bevel gear six 706 is engaged with a bevel gear seven 710, the right side of the bevel gear six 706 is engaged with a bevel gear eight 711, the bevel gear seven 710 is fixedly connected with a fixed shaft two 712, the fixed shaft two 712 is fixedly sleeved with a spring three 715 at the part of the working chamber three 704, the fixed shaft two 712 passes through the working chamber two 703 and enters the working chamber one 706, the fixed shaft two 712 is fixedly connected with a gear two 716 inside the working chamber two 703, the gear two 716 is engaged with a gear three 717, the gear three 717 is fixedly connected with the fixed shaft five 730, and the fixed shaft two 712 is fixedly connected with a magnetic block 713 inside the working chamber one 706, the first magnetic block 713 is arranged corresponding to the first electromagnetic block 714, and the first electromagnetic block 714 is arranged inside the first working cavity 706;
the two mounting blocks 726 are respectively connected with the working chamber IV 705 in a sliding manner along the vertical direction, the mounting blocks 726 are fixedly connected with a second threaded sleeve 725, the second threaded sleeve 725 is in threaded connection with a second threaded rod 724, the second threaded rod 724 is fixedly connected with a ninth bevel gear 723, the left side of the ninth bevel gear 723 is meshed with a tenth bevel gear 722, and the right side of the ninth bevel gear 723 is meshed with an eleventh bevel gear 727;
the two fixed shafts three 720 are respectively fixedly connected with the bevel gear ten 722 and the bevel gear eleventh 727, the left end of each fixed shaft three 720 is provided with a matching groove 721, the right end of each fixed shaft three 720 is fixedly connected with a magnetic block two 728, the magnetic block two 728 and an electromagnetic block two 729 are correspondingly arranged, the electromagnetic block two 729 is arranged inside the working cavity four 705, the matching groove 721 is matched with a fixed shaft four 718, the fixed shaft four 718 is fixedly connected with the bevel gear eight 711, and a spring four 719 is fixedly arranged between the fixed shaft three 720 and the fixed shaft four 718.
The cleaning device includes:
a power cavity IV 801 and a cleaning groove 812 are arranged in the cleaning shell 8, the cleaning groove 812 is vertically communicated with the power cavity IV 801 through an opening 811, and the cleaning groove 812 is communicated with the filter cavity 702;
the disc 802 is arranged inside the power cavity four 801 and fixedly connected with the fixed shaft five 730, the disc 802 is symmetrically and eccentrically provided with an eccentric shaft 803, the eccentric shaft 803 is matched with a connecting groove 8041 of a grooved wheel 804, the grooved wheel 804 is fixedly connected with a gear four 806 through a connecting shaft 805, the gear four 806 is meshed with a gear two 807, and the gear two 807 passes through the opening 811 and is rotatably connected with a cleaning sleeve 810;
and the two connecting plates 808 are respectively and fixedly connected with the second rack 807, and a fifth spring 809 is fixedly arranged between the connecting plates 808 and the fourth power cavity 801.
The beneficial effects of the above technical scheme are:
when the filtering and cleaning device is used, firstly, the valve body 1 is inserted into the mounting cavity 701, the motor two 707 is started, the motor two 707 drives the bevel gear six 709 to rotate through the fixed shaft one 708, the bevel gear six 709 drives the bevel gear eight 711 to rotate, the bevel gear eight 711 drives the fixed shaft four 718 to rotate, the fixed shaft four 718 drives the fixed shaft three 720 to rotate, the fixed shaft three 720 drives the bevel gear ten 722 to rotate, the bevel gear ten 722 drives the bevel gear nine 723 to rotate, the bevel gear nine 723 drives the threaded sleeve two 725 to rotate, the threaded sleeve two 725 drives the threaded rod two 724 to move, the threaded rod two 724 drives the mounting block 726 to move in the direction close to the mounting cavity 701, the valve body 1 is clamped, after the valve body 1 is connected with the filtering and cleaning device, the flow channel 102 is communicated with the filtering cavity 702, and the purpose of filtering and cleaning of the overflowing medium inside the valve body 1 is achieved through the filter screen 731, after the filtering operation is stopped, if the valve body 1 and the filtering and cleaning device are disassembled, the second electromagnetic block 729 is electrified, the like poles of the second electromagnetic block 729 and the second magnetic block 728 repel each other, so that the bevel gear ten 722 is separated from the bevel gear nine 723, the bevel gear eleven 727 is meshed with the bevel gear nine 723, through the arrangement of the spring 719, under the elastic action of the spring 719, the bevel gear ten 722 is meshed with the bevel gear nine 723 after the second electromagnetic block 729 is powered off, the bevel gear eleven 727 is separated from the bevel gear nine 723, the bevel gear eleven 727 is driven by the rotation of the motor 707, the bevel gear nine 727 is driven by the bevel gear eleven 727 to rotate reversely, so that the mounting block 726 moves in the direction far away from the mounting cavity 701, so that the filtering and cleaning device is separated from the valve body 1, meanwhile, the first electromagnetic block 714 is electrified, the like poles of the first electromagnetic block 713 repel each other, so that the second electromagnetic block 712 drives the second gear 716 to be meshed with the third gear 717, the five fixed shaft 730 is driven to rotate, the five fixed shaft 730 drives the disc 802 to rotate, the disc 802 drives the eccentric shaft 803 to rotate, the eccentric shaft 803 drives the grooved wheel 804 to rotate, the grooved wheel 804 drives the four gear 806 to rotate, the four gear 806 drives the two rack 807 to move upwards, the two rack 807 drives the cleaning sleeve 810 to move upwards, the cleaning sleeve 810 cleans the left side and the right side of the filter screen 731, the purpose of automatic resetting after the cleaning of the cleaning sleeve 810 is finished is achieved by arranging the five spring 809, and manpower is saved.
Example 4
On the basis of embodiment 3, the method further comprises the following steps:
a first speed sensor: the speed sensor is arranged at the inlet of the flow channel 102 and used for detecting the flow velocity of the overflowing medium at the inlet of the flow channel 102;
a speed sensor II: the second speed sensor is arranged at the outlet of the flow channel 102 and used for detecting the flow velocity of the overflowing medium at the outlet of the flow channel 102;
the first force sensor is as follows: a first force measuring layer is arranged on one side, close to the flashboard 2, of the inlet part of the flow channel 102, and a first force sensor is arranged inside the first force measuring layer and used for detecting the extrusion force of the overflowing medium on the inlet part of the flow channel 102;
and a second force sensor: a second force measuring layer is arranged on one side, close to the flashboard 2, of the outlet part of the flow passage 102, and a second force sensor is arranged inside the second force measuring layer and used for detecting the extrusion force of overflowing media on the outlet part of the flow passage 102;
a first temperature sensor: the first temperature sensor is arranged at the inlet part of the flow channel 102 and is used for detecting the temperature at the inlet part of the flow channel 102;
and a second temperature sensor: the second temperature sensor is arranged at the outlet part of the flow channel 102 and used for detecting the temperature at the outlet part of the flow channel 102;
an alarm device: the alarm is arranged outside the valve body 1;
the controller is electrically connected with the first speed sensor, the second speed sensor, the first force sensor, the second force sensor, the first temperature sensor, the second temperature sensor and the alarm;
the controller controls the alarm to work based on the first speed sensor, the second speed sensor, the first force sensor, the second force sensor, the first temperature sensor and the second temperature sensor, and the method comprises the following steps:
step 1, a controller calculates a theoretical resistance coefficient of a gate plate 2 in a flow passage 102 according to a flow velocity of overflowing medium at an inlet of the flow passage 102 detected by a first speed sensor, a flow velocity of overflowing medium at an outlet of the flow passage 102 detected by a second speed sensor, extrusion force of overflowing medium on an inlet of the flow passage 102 detected by the first force sensor, extrusion force of overflowing medium on an outlet of the flow passage 102 detected by the second force sensor, temperature of the inlet of the flow passage 102 detected by the first temperature sensor, temperature of the outlet of the flow passage 102 detected by the second temperature sensor and a formula (1);
Figure BDA0003227506310000151
where κ is the theoretical coefficient of resistance of the gate 2 in the runner 102, P1Is the detection value of the first force sensor, A1Is the cross-sectional area of the force measuring layer one, P2Is the detection value of the first force sensor, A2Is the cross-sectional area of force measuring layer two, V1Is the detected value of a speed sensor one, V2Is the detected value of the second speed sensor, T1Is the detected value of a temperature sensor one, T2The detection value of the temperature sensor II is shown, rho is the density of the overflowing medium, and e is a natural base number;
and 2, calculating theoretical working specific pressure of the sealing ring 203 by the controller according to the theoretical resistance coefficient of the flashboard 2 in the flow passage 102 calculated in the step 1 and the formula (2), comparing the calculated theoretical working specific pressure of the sealing ring 203 with the allowable specific pressure of the sealing ring 203 by the controller, and if the calculated theoretical working specific pressure of the sealing ring 203 is greater than the allowable specific pressure of the sealing ring 203, controlling an alarm to give an alarm by the controller to remind a user that the sealing performance of the sealing ring 203 is poor and the maintenance and the replacement should be carried out in time.
Figure BDA0003227506310000152
Wherein W is the theoretical working specific pressure of the seal ring 203, C1Is the diameter of the flow passage 102, B is the nominal pressure of the valve body 1, N is the minimum specific pressure for pre-tightening the sealing ring 203, R is the outer ring diameter of the sealing ring 203, R is the inner ring diameter of the sealing ring 203, C2The diameter of a hole for embedding a sealing ring 203 on the flashboard 2, h is the thickness of the flashboard 2, h1η is a friction coefficient between the seal ring 203 and the shutter 2, which is a thickness of the seal ring 203.
Wherein, in the formula (1)
Figure BDA0003227506310000161
The resistance coefficient P of the shutter 2 without considering the temperature difference1Take 600N, A1Take 1cm2,P2Taking 590N, A2Take 1cm2,V1The value is 1200m/s, V2The value is 1100m/s, the water vapor is taken as the overflowing medium, and the density rho of the water vapor is 0.25Kg/m3Then, then
Figure BDA0003227506310000162
The calculation results in that 2.5 is obtained,
Figure BDA0003227506310000163
the influence values of the inlet temperature and the outlet temperature of the flow path 102 on the coefficient of resistance of the shutter 2, T1Get 600K, T2Taking 580K, then
Figure BDA0003227506310000164
Calculating to obtain 0.96, and finally calculating to obtain
Figure BDA0003227506310000165
Is 2.4;
n (R) in formula (2)2-r2) Pre-tightening force of a sealing ring 203 on the gate plate 2, wherein N is 5MPa, R is 230mm, and R is 210mm, N (R)2-r2) The calculation results in 44000N, and the like,
Figure BDA0003227506310000166
acting force of overflowing medium on sealing ring 203 on flashboard 2, wherein C2232mm is taken, h is 50mm, eta is 0.6, B is 50MPa, C1Taking 220mm, calculating to obtain
Figure BDA0003227506310000167
30661.8N, the final calculation shows that 186.7MPa is less than the allowable specific pressure of the sealing ring 203 of 250MPa, and the alarm does not give an alarm.
The beneficial effects of the above technical scheme are that:
arranging a first speed sensor at the inlet of the flow channel 102, and detecting the flow velocity of the overflowing medium at the inlet of the flow channel 102; a second speed sensor is arranged at the outlet of the flow channel 102 and used for detecting the flow velocity of the overflowing medium at the outlet of the flow channel 102; a first force measuring layer is arranged on one side, close to the flashboard 2, of the inlet part of the flow channel 102, and a first force sensor is arranged inside the first force measuring layer and used for detecting the extrusion force of the overflowing medium on the inlet part of the flow channel 102; a second force measuring layer is arranged on one side, close to the flashboard 2, of the outlet part of the flow passage 102, and a second force sensor is arranged inside the second force measuring layer and used for detecting the extrusion force of the overflowing medium on the outlet part of the flow passage 102; arranging a first temperature sensor at the inlet part of the flow channel 102, and detecting the temperature of the inlet part of the flow channel 102; a second temperature sensor is arranged at the outlet part of the flow passage 102 and is used for detecting the temperature at the outlet part of the flow passage 102; the controller calculates the theoretical resistance coefficient of the gate plate 2 in the flow passage 102 according to the flow velocity of the overflowing medium at the inlet of the flow passage 102 detected by the first speed sensor, the flow velocity of the overflowing medium at the outlet of the flow passage 102 detected by the second speed sensor, the extrusion force of the overflowing medium at the inlet of the flow passage 102 detected by the first force sensor, the extrusion force of the overflowing medium at the outlet of the flow passage 102 detected by the second force sensor, the temperature at the inlet of the flow passage 102 detected by the first temperature sensor, the temperature at the outlet of the flow passage 102 detected by the second temperature sensor, and the formula (1), then calculates the theoretical specific operating pressure of the seal ring 203 according to the theoretical resistance coefficient of the gate plate 2 in the flow passage 102 calculated in the step (1) and the formula (2), compares the calculated theoretical specific operating pressure of the seal ring 203 with the allowable specific pressure of the seal ring 203, and if the calculated theoretical specific operating pressure of the seal ring 203 is greater than the allowable specific pressure of the seal ring 203, the controller controls the alarm to give an alarm to remind a user that the sealing performance of the sealing ring 203 is poor and the sealing ring should be maintained and replaced in time.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A be used for ultra supercritical unit high temperature high pressure valve, its characterized in that: including valve body (1) and flashboard (2), valve body (1) inside is equipped with runner (102), valve body (1) is connected with spacing (4), spacing (4) with flashboard (2) clearance fit, valve body (1) and spacing (4) are equipped with fin (5) with the contact surface of flashboard (2), be provided with on flashboard (2) and be used for runner (201) the butt joint with valve body (1) runner (102).
2. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 1 is characterized in that: valve body (1) includes two valve members (101), valve member (101) tip is provided with connects boss (1011), the connection boss (1011) of two valve members (101) dock the back with fastening bolt (3) fixed, be equipped with flashboard (2) between the terminal surface of connecting boss (1011) butt joint.
3. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 1 is characterized in that: connect boss (1011) butt joint terminal surface with spacing strip (4) pass through fastening bolt (3) threaded connection, the interior interval of spacing strip (4) with the width of flashboard (2) suits.
4. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 1 is characterized in that: the flashboard (2) is made of chromium molybdenum cast steel.
5. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 1 is characterized in that: be provided with two holes that are used for inlaying sealed pad (202) and sealing washer (203) in flashboard (2), be provided with a round hole in the middle of sealing washer (203) for but the runner butt joint of valve body (1), sealed pad (202) are solid construction.
6. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 5, characterized in that: the sealing gasket (202) and the sealing ring (203) are made of nickel-based alloy.
7. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 1 is characterized in that: still include automatic switching device, automatic switching device with valve body (1) and flashboard (2) can be dismantled and be connected, automatic switching device includes:
a switch shell (6), a first baffle plate (601) is arranged on the upper side inside the switch shell (6), a first power cavity (602) is arranged between the upper end of the first baffle (601) and the upper end of the interior of the switch shell (6), a third power cavity (618) and a second power cavity (617) are arranged between the lower end of the first baffle plate (601) and the lower end of the interior of the switch shell (6), the left side and the right side of the power cavity III (618) are symmetrically provided with the power cavity II (617), a second baffle plate (616) is arranged between the second power cavity (617) and the third power cavity (618), the left end and the right end of the second baffle plate (616) are provided with a first through hole (6161) in a penetrating way, the second power cavity (617) is communicated with the third power cavity (618) through the first through hole (6161), a second through hole (619) is formed in the lower end of the switch shell (6) in a vertically penetrating mode, and the second through hole (619) is vertically communicated with the third power cavity (618);
the first motor (603), the first motor (603) is arranged inside the first power cavity (602), the first motor (603) is fixedly connected with the first thread bushing (604), the first thread bushing (604) is fixedly connected with the first bevel gear (605), the bevel gear II (606) is symmetrically meshed with the left side and the right side of the first bevel gear (605), the bevel gear II (606) is fixedly connected with the first rotating shaft (607), the first rotating shaft (607) is fixedly connected with the bevel gear twelve (608), the bevel gear twelve (608) is meshed with the bevel gear III (610), the bevel gear III (610) is fixedly connected with the second rotating shaft (611), and the second rotating shaft (611) penetrates through the first baffle (601) to enter the inside of the second power cavity (617) and is fixedly connected with the bevel gear IV (612);
the two first support rods (622) are respectively fixedly connected with one end, close to the power cavity II (617), of the baffle II (616), the first support rods (622) are rotatably connected with a rotating shaft III (621), the rotating shaft III (621) is fixedly connected with a gear I (620) and a guide block (624), a sliding groove I (6241) is arranged on the guide block (624), the sliding groove I (6241) is slidably connected with a sliding shaft I (625), and a spring I (628) is fixedly arranged between the guide block (624) and the baffle II (616);
the two first guide rods (626) are respectively and rotatably connected with the first sliding shaft (625), and one end, far away from the first sliding shaft (625), of each first guide rod (626) penetrates through the first through hole (6161) and a first clamping block (627) in the power cavity III (618) to be fixedly connected;
the two first fixing blocks (629) are fixedly connected with one end, close to the power cavity III (618), of the baffle plate II (616), the fixing blocks I (629) are provided with sliding grooves II (6291), the sliding grooves II (6291) are in sliding connection with sliding shafts II (630), the sliding shafts II (630) are fixedly connected with guide rods II (631), the guide rods II (631) are fixedly connected with fixture blocks II (633), and telescopic rods (632) are arranged between the guide rods II (631) and the guide rods I (626);
two second support rods (623), wherein the two second support rods (623) are respectively fixedly connected with one end, close to the second power cavity (617), of the second baffle plate (616), the second support rods (623) are arranged on the upper sides of the first support rods (622), the second support rods (623) are rotatably connected with a fourth rotating shaft (613), the fourth rotating shaft (613) is fixedly connected with a fifth bevel gear (614) and a sector gear (615), the fifth bevel gear (614) is meshed with the fourth bevel gear (612), and the sector gear (615) is meshed with the first gear (620) and the rack (634);
a second fixing block (642), wherein the second fixing block (642) penetrates through the second through hole (619) and is slidably connected with the second through hole (619), a mounting groove (6422) is formed in the lower end of the second fixing block (642), the mounting groove (6422) is fixedly connected with the gate plate (2) through a bolt (643) and a nut (644) in a matched mode, clamping grooves (6421) are symmetrically formed in the left side and the right side of the upper portion of the second fixing block (642), the clamping grooves (6421) are matched with the first clamping blocks (627), a first threaded rod (641) is fixedly connected to the upper end of the second fixing block (642), and the first threaded rod (641) is in threaded connection with the first threaded sleeve (604);
the two pull ropes (636) are symmetrically arranged on the left side and the right side of the upper end of the second fixed block (642), one end, far away from the second fixed block (642), of each pull rope (636) is fixedly connected with a third fixed block (635), the third fixed block (635) is fixedly connected with the rack (634), the middle of each pull rope (636) is connected with a guide wheel (638), each guide wheel (638) is rotatably connected with a third support rod (637), and each third support rod (637) is fixedly connected with the first baffle (601);
the two fixing blocks IV (640) are symmetrically arranged on the left side and the right side of the lower end of the baffle I (601), the fixing blocks IV (640) are fixedly connected with a spring II (639), the spring II (639) is fixedly connected with a fixing block III (635), and the fixing block III (635) is in sliding connection with the baffle I (601);
the connecting block (609), the connecting block (609) symmetry sets up the lower extreme left and right sides of switch shell (6), connecting block (609) with valve body (1) can dismantle the connection.
8. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 1 is characterized in that: still including filtering cleaning device, filtering cleaning device includes filter equipment and a plurality of cleaning device, filter equipment's inside is equipped with filter chamber (702) and installation cavity (701), installation cavity (701) with the connection can be dismantled in valve body (1), the inside of filter chamber (702) is equipped with filter screen (731), filter chamber (702) with runner (102) intercommunication, the inside four cleaning device that is equipped with of filter equipment, four cleaning device symmetries set up the upper and lower both ends left and right sides of filter chamber (702), and the cleaning device at upper and lower both ends corresponds the setting and is in the left and right sides of filter screen (731), be connected with five (730) of fixed axle between the cleaning device of the left and right sides.
9. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 8 is characterized in that: the filtering device includes:
the mounting shell (7), a filter cavity (702) and a mounting cavity (701) are arranged at the left end and the right end of the mounting shell (7) in a penetrating manner, the filter cavity (702) is communicated with the mounting cavity (701) in the left-right direction, a first working cavity (706), a second working cavity (703) and a third working cavity (704) are symmetrically arranged at the upper side and the lower side of the filter cavity (702), a fourth working cavity (705) is symmetrically arranged at the upper side and the lower side of the mounting cavity (701), the first working cavity (706), the second working cavity (703), the third working cavity (704) and the fourth working cavity (705) are sequentially communicated in the left-right direction, and the fourth working cavity (705) is communicated with the mounting cavity (701);
two motors II (707), the two motors II (707) are respectively arranged inside the working cavity III (704), the motor II (707) is fixedly connected with a first fixed shaft (708), the first fixed shaft (708) is fixedly connected with a sixth bevel gear (709), the left side of the sixth bevel gear (706) is engaged with a seventh bevel gear (710), the right side of the sixth bevel gear (706) is engaged with an eighth bevel gear (711), the seventh bevel gear (710) is fixedly connected with a second fixed shaft (712), the part of the working cavity III (704) on which the second fixed shaft (712) is fixedly sleeved with a third spring (715) passes through the second working cavity (703) to enter the first working cavity (706), the second fixed shaft (712) is fixedly connected with the second gear (716) inside the second working cavity (703), and the second gear (716) is engaged with the third gear (717), the gear three (717) is fixedly connected with the fixed shaft five (730), the fixed shaft two (712) is fixedly connected with a magnetic block one (713) in the working cavity one (706), the magnetic block one (713) is arranged corresponding to an electromagnetic block one (714), and the electromagnetic block one (714) is arranged in the working cavity one (706);
the two mounting blocks (726) are respectively connected with the working chamber IV (705) in a sliding mode along the vertical direction, the mounting blocks (726) are fixedly connected with a second threaded sleeve (725), the second threaded sleeve (725) is in threaded connection with a second threaded rod (724), the second threaded rod (724) is fixedly connected with a ninth bevel gear (723), the left side of the ninth bevel gear (723) is meshed with a tenth bevel gear (722), and the right side of the ninth bevel gear (723) is meshed with an eleventh bevel gear (727);
the three fixed shafts (720) are respectively fixedly connected with the bevel gear ten (722) and the bevel gear eleventh (727), the left end of each fixed shaft three (720) is provided with a matching groove (721), the right end of each fixed shaft three (720) is fixedly connected with a magnetic block two (728), the magnetic block two (728) and the electromagnetic block two (729) are correspondingly arranged, the electromagnetic block two (729) is arranged inside the working cavity IV (705), the matching groove (721) is matched with a fixed shaft IV (718), the fixed shaft IV (718) is fixedly connected with the bevel gear eighth (711), and a spring IV (719) is fixedly arranged between each fixed shaft three (720) and the fixed shaft IV (718).
10. The high-temperature and high-pressure valve for the ultra-supercritical unit according to claim 8 is characterized in that: the cleaning device includes:
the cleaning device comprises a cleaning shell (8), wherein a power cavity IV (801) and a cleaning groove (812) are arranged in the cleaning shell (8), the cleaning groove (812) is communicated with the power cavity IV (801) up and down through an opening (811), and the cleaning groove (812) is communicated with a filter cavity (702);
the disc (802) is arranged inside the power cavity IV (801) and fixedly connected with the fixed shaft IV (730), the disc (802) is symmetrically and eccentrically provided with eccentric shafts (803), the eccentric shafts (803) are matched with a connecting groove (8041) of a grooved wheel (804), the grooved wheel (804) is fixedly connected with a gear IV (806) through a connecting shaft (805), the gear IV (806) is meshed with a rack II (807), and the rack II (807) penetrates through the opening (811) and is rotatably connected with a cleaning sleeve (810);
the two connecting plates (808) are respectively and fixedly connected with the second rack (807), and a fifth spring (809) is fixedly arranged between the connecting plates (808) and the fourth power cavity (801).
CN202110975530.8A 2021-08-24 2021-08-24 High-temperature and high-pressure valve for ultra-supercritical unit Pending CN113898748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110975530.8A CN113898748A (en) 2021-08-24 2021-08-24 High-temperature and high-pressure valve for ultra-supercritical unit

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Application Number Priority Date Filing Date Title
CN202110975530.8A CN113898748A (en) 2021-08-24 2021-08-24 High-temperature and high-pressure valve for ultra-supercritical unit

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114470994A (en) * 2022-01-29 2022-05-13 广州科威环保工程有限公司 Special high-energy light plasma deodorization sterilization equipment for garbage site

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Publication number Priority date Publication date Assignee Title
CN207229800U (en) * 2017-09-18 2018-04-13 江苏圣泰阀门有限公司 For extra-supercritical unit high-temperature high pressure valve
CN109202761A (en) * 2018-11-08 2019-01-15 新昌县建凯电机有限公司 A kind of pressure-increased power big vice
JP6627168B1 (en) * 2019-04-28 2020-01-08 天津▲へん▼香飾品有限公司 Accessory display stand
CN211844439U (en) * 2020-02-12 2020-11-03 高鹏 Coal mine transportation ground bumper device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207229800U (en) * 2017-09-18 2018-04-13 江苏圣泰阀门有限公司 For extra-supercritical unit high-temperature high pressure valve
CN109202761A (en) * 2018-11-08 2019-01-15 新昌县建凯电机有限公司 A kind of pressure-increased power big vice
JP6627168B1 (en) * 2019-04-28 2020-01-08 天津▲へん▼香飾品有限公司 Accessory display stand
CN211844439U (en) * 2020-02-12 2020-11-03 高鹏 Coal mine transportation ground bumper device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114470994A (en) * 2022-01-29 2022-05-13 广州科威环保工程有限公司 Special high-energy light plasma deodorization sterilization equipment for garbage site

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