CN116906601A - Large-caliber high-temperature high-pressure regulating valve - Google Patents

Large-caliber high-temperature high-pressure regulating valve Download PDF

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Publication number
CN116906601A
CN116906601A CN202310963639.9A CN202310963639A CN116906601A CN 116906601 A CN116906601 A CN 116906601A CN 202310963639 A CN202310963639 A CN 202310963639A CN 116906601 A CN116906601 A CN 116906601A
Authority
CN
China
Prior art keywords
valve
cover
temperature
valve cover
valve rod
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
CN202310963639.9A
Other languages
Chinese (zh)
Inventor
封宽海
陈守丰
陈立民
董狄军
孙健
王江华
姜铭
朱永锋
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.)
ZHEJIANG SANFANG CONTROL VALVE CO Ltd
Original Assignee
ZHEJIANG SANFANG CONTROL 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 ZHEJIANG SANFANG CONTROL VALVE CO Ltd filed Critical ZHEJIANG SANFANG CONTROL VALVE CO Ltd
Priority to CN202310963639.9A priority Critical patent/CN116906601A/en
Publication of CN116906601A publication Critical patent/CN116906601A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K1/32—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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre 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
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • 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
    • 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
    • F16K41/00—Spindle sealings
    • F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
    • 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
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/005—Circulation means for a separate heat transfer fluid

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lift Valve (AREA)

Abstract

The invention discloses a large-caliber high-temperature high-pressure regulating valve which comprises a valve body, a valve cover arranged on the valve body, an upper valve cover arranged on the valve cover, a bracket arranged on the upper valve cover, an electric actuator arranged on the bracket and a valve rod connected with the electric actuator, wherein the valve cover is arranged on the valve body; a valve core is arranged on the valve rod; a sleeve is arranged between the valve body and the valve cover; the valve rod is sleeved with a corrugated pipe; the device is characterized in that a preheating mechanism for heating the valve cover and the corrugated pipe before starting is arranged on the valve cover; the preheating mechanism comprises a heat-conducting oil valve cavity which is arranged on the valve cover and is convenient for filling heat-conducting oil, and a thermocouple which is arranged on the valve cover and is used for monitoring the temperature in the valve; the valve rod is provided with an anti-rotation structure for preventing the valve rod and the valve core from rotating; and inclination angles of beta and alpha for improving the smoothness of the fluid flow passage are respectively arranged on the valve core and the sleeve. According to the invention, the preheating mechanism is utilized to preheat the valve cover and the corrugated pipe, so that solidification of fluid caused by cooling is prevented, and normal sealing of the corrugated pipe is prevented from being influenced.

Description

Large-caliber high-temperature high-pressure regulating valve
Technical Field
The invention relates to the technical field of valves, in particular to a large-caliber high-temperature high-pressure regulating valve.
Background
In the production process of industries such as petroleum, chemical industry and the like, the regulating valve plays a very important role, the sealing performance of the regulating valve directly influences the use effect of the whole pipeline control system, especially the regulation of large-caliber and high-flow working conditions, in the prior art, when the valve is used in the process of flowing high-temperature fluid to the corrugated pipe, the corrugated pipe is at normal temperature when the valve is just used, and forms a temperature difference with the high-temperature fluid, the high-temperature fluid is easy to solidify between the corrugated pipe and the valve rod after encountering cold, so that the corrugated pipe and the valve rod cannot normally move at the same time, the rupture of the corrugated pipe is easy to cause, the leakage of the valve is caused, and the valve core and the valve rod are easy to rotate due to the high-density corrosive fluid under extreme working conditions, thereby influencing the control precision of the valve. Therefore, a large-caliber high-temperature high-pressure regulating valve is provided.
Disclosure of Invention
The invention aims to solve the problems and provides a large-caliber high-temperature high-pressure regulating valve.
In order to achieve the above purpose, the present invention provides the following technical solutions: a large-caliber high-temperature high-pressure regulating valve comprises a valve body, a valve cover arranged on the valve body, an upper valve cover arranged on the valve cover, a bracket arranged on the upper valve cover, an electric actuator arranged on the bracket and a valve rod connected with the electric actuator; a valve core is arranged on the valve rod; a sleeve is arranged between the valve body and the valve cover; the valve rod is sleeved with a corrugated pipe; the device is characterized in that a preheating mechanism for heating the valve cover and the corrugated pipe before starting is arranged on the valve cover; the preheating mechanism comprises a heat-conducting oil valve cavity which is arranged on the valve cover and is convenient for filling heat-conducting oil, and a thermocouple which is arranged on the valve cover and is used for monitoring the temperature in the valve; the valve rod is provided with an anti-rotation structure for preventing the valve rod and the valve core from rotating; and inclination angles of beta and alpha for improving the smoothness of the fluid flow passage are respectively arranged on the valve core and the sleeve.
Preferably, the valve core is provided with a plurality of balance holes; the sleeve is provided with a plurality of fluid through holes; the < beta > is positioned at a balance hole on the valve core; and the < alpha > is positioned at the position of the fluid through hole on the sleeve.
Preferably, the valve core and the sleeve are also provided with matched sealing surfaces.
Preferably, the valve cover is also provided with a heat conducting oil inlet and a heat conducting oil outlet which are communicated with the heat conducting oil valve cavity; and the thermocouple is also provided with a temperature measuring point fixed on the valve cover.
Preferably, the valve rod comprises a lower valve rod and an upper valve rod mounted on the lower valve rod; the valve core and the corrugated pipe are arranged on the lower valve rod; the anti-rotation structure is arranged on the upper valve rod; and a packing structure is arranged between the upper valve rod and an upper valve cover provided with a bracket.
Preferably, an anti-rotation block is assembled and fixed on the upper valve rod; and an anti-rotation limiting groove matched with the anti-rotation block is formed in the support.
Preferably, the packing structure includes packing installed between the upper valve stem and the upper valve cover, and a packing pressing plate installed on the packing and fixed to the upper valve cover by screws.
Preferably, the filler comprises double layer flexible graphite and nickel wire filler.
Preferably, a sealing lip welding is adopted between the valve body and the valve cover; the valve body is also provided with a fluid inlet and a fluid outlet.
The invention has the beneficial effects that: the preheating mechanism is used for preheating the heat conduction oil valve cavity on the valve cover and the corrugated pipe, so that solidification of fluid caused by cold is prevented, and normal sealing of the corrugated pipe is prevented from being influenced;
the valve rod is radially limited by utilizing the anti-rotation structure, so that the valve core and the valve rod are prevented from rotating due to scouring of high-density corrosive fluid under extreme working conditions, and the control precision of the valve core and the valve rod is improved;
through setting up the inclination angle of +.beta and +.alpha respectively on case and the sleeve, increase the smoothness of fluid runner on case and the sleeve, avoid fluid deposit solidification when reducing the pressure loss.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the adaptation structure of the valve core and the sleeve of the present invention. A step of
Fig. 3 is an enlarged view of a portion of fig. 1 a of the present invention.
Fig. 4 is a partial enlarged view of the present invention at B in fig. 1.
Legend description: 1. a valve body; 101. a fluid inlet; 102. a fluid outlet; 2. a valve cover; 3. an upper valve cover; 301. a filler; 302. a packing pressing plate; 4. a bracket; 5. an electric actuator; 6. a valve stem; 601. a lower valve rod; 602. an upper valve rod; 7. a valve core; 701. a balance hole; 8. a sleeve; 801. a fluid through hole; 802. sealing surfaces; 9. a bellows; 10. a preheating mechanism; 1001. a heat transfer oil valve cavity; 1002. a thermocouple; 1003. a conduction oil inlet; 1004. a heat transfer oil outlet; 1005. a temperature measuring point; 11. an anti-rotation structure; 1101. an anti-rotation block; 1102. anti-rotation limit groove.
Description of the embodiments
The invention relates to a large-caliber high-temperature high-pressure regulating valve, which is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, a large-caliber high-temperature high-pressure regulating valve in the embodiment comprises a valve body 1, a valve cover 2 arranged on the valve body 1, an upper valve cover 3 arranged on the valve cover 2, a bracket 4 arranged on the upper valve cover 3, an electric actuator 5 arranged on the bracket 4 and a valve rod 6 connected with the electric actuator 5; a valve core 7 is arranged on the valve rod 6; a sleeve 8 is arranged between the valve body 1 and the valve cover 2; the valve rod 6 is sleeved with a corrugated pipe 9; the device is characterized in that a preheating mechanism 10 for heating the valve cover 2 and the corrugated pipe 9 before starting is arranged on the valve cover 2; the preheating mechanism 10 comprises a heat conduction oil valve cavity 1001 which is arranged on the valve cover 2 and is convenient for filling heat conduction oil, and a thermocouple 1002 which is arranged on the valve cover 2 and is used for monitoring the temperature in the valve; the valve rod 6 is provided with an anti-rotation structure 11 for preventing the valve rod 6 and the valve core 7 from rotating; the valve core 7 and the sleeve 8 are respectively provided with inclination angles of beta and alpha for improving the smoothness of the fluid flow channel; the preheating mechanism 10 is used for preheating the heat conduction oil valve cavity 201 and the corrugated pipe 9 on the valve cover 2, so that solidification of fluid caused by cold is prevented, and normal sealing of the corrugated pipe 9 is prevented; the valve rod 6 is radially limited by utilizing the anti-rotation structure 11, so that the valve core 7 and the valve rod 6 are prevented from rotating due to scouring of high-density corrosive fluid under extreme working conditions, and the control precision of the valve core 7 and the valve rod 6 is improved; through setting up the inclination angle of +.beta and +.alpha respectively on case 7 and sleeve 8, increase the smoothness of fluid flow channel on case 7 and the sleeve 8, avoid fluid deposit solidification when reducing the pressure loss.
Referring to fig. 1-4, the valve core 7 is provided with a plurality of balance holes 701; the sleeve 8 is provided with a plurality of fluid through holes 801; the +.beta.is positioned at the balance hole 701 on the valve core 7; the +.alpha.is positioned at the fluid through hole 801 on the sleeve 8; the valve core 7 and the sleeve 8 are also provided with matched sealing surfaces 802; the balance holes 701 on the valve core 7 are utilized to balance the pressure of fluid on two sides of the valve core 7, so that the valve core 7 is prevented from swaying due to unbalanced pressure of the fluid, and the control precision is improved; by the contact adaptation of the sealing surface 802 on the valve core 7 with the sealing surface 802 on the sleeve 8, the tightness between the valve core 7 and the sleeve 8 is improved.
Referring to fig. 1-4, the valve cover 2 is further provided with a heat conducting oil inlet 1003 and a heat conducting oil outlet 1004 which are communicated with the heat conducting oil valve cavity 10; the thermocouple 1002 is also provided with a temperature measuring point 1005 fixed on the valve cover 2; the valve rod 6 includes a lower valve rod 601 and an upper valve rod 602 mounted on the lower valve rod 601; the valve core 7 and the corrugated pipe 9 are arranged on the lower valve rod 601; the conduction oil flows into the conduction oil valve cavity 10 on the valve cover 2 through the conduction oil inlet 1003, then flows out of the conduction oil outlet 1004, preheats the conduction oil valve cavity 10 and the corrugated pipe 9, and monitors the preheated temperature by utilizing the temperature measuring point 1005 on the thermocouple 1002, thereby preventing the fluid from solidifying when encountering cold, ensuring that the corrugated pipe 9 cannot move simultaneously with the valve rod 6, and affecting the normal sealing of the corrugated pipe 9.
Referring to FIGS. 1-4, the anti-rotation structure 11 is mounted on the upper stem 602; a packing structure is arranged between the upper valve rod 602 and the upper valve cover 3 provided with the bracket 4; the anti-rotation structure 11 comprises an anti-rotation block 1101 assembled and fixed on the upper valve rod 602 through bolts and an anti-rotation limit groove 1102 which is arranged on the bracket 4 and is matched with the anti-rotation block 1101; the packing structure includes a packing 301 installed between an upper stem 602 and an upper bonnet 3, and a packing pressing plate 302 installed on the packing 301 and fixed on the upper bonnet 3 by screws; the filler 301 comprises double-layer flexible graphite and nickel wire filler; sealing lip welding is adopted between the valve body 1 and the valve cover 2; the valve body 1 is also provided with a fluid inlet 101 and a fluid outlet 102; the anti-rotation block 1101 is arranged on the upper valve rod 602, the anti-rotation block 1101 is radially limited by utilizing the anti-rotation limiting groove 1102 on the support 4, the valve core 7 and the valve rod 6 are prevented from rotating due to scouring of high-density corrosive fluid under extreme working conditions, the control precision of the valve core 7 and the valve rod 6 is improved, and the high pressure resistance and the high temperature resistance of the valve are improved by adopting double-layer flexible graphite and nickel wire filler as the filler 301.
In the invention, firstly, heat conduction oil flows into a heat conduction oil valve cavity 10 on a valve cover 2 through a heat conduction oil inlet 1003, then flows out from a heat conduction oil outlet 1004, the heat conduction oil valve cavity 10 and a corrugated pipe 9 are preheated, meanwhile, the preheated temperature is monitored by a temperature measuring point 1005 on a thermocouple 1002 until the preheated temperature of the heat conduction oil valve cavity 10 and the corrugated pipe 9 reaches a set value, then an electric actuator 5 drives an upper valve rod 602 to move upwards, the upper valve rod 602 drives a lower valve rod 601 to move, the lower valve rod 601 drives a valve core 7 to move upwards, the valve is opened, fluid flows into a valve body 1 through a fluid inlet 101, then a part of fluid flows into the upper part of the valve core 7 through a balance hole 701 on the valve core 7, so that the pressure of the upper part and the lower part of the valve core 7 are balanced, and the other fluid flows out from the valve body 1 through a fluid through hole 801 and a fluid outlet 102 on a sleeve 8, when the electric actuator 5 drives the upper valve rod 602 to move downwards, the lower valve rod 601 drives the lower valve rod 601 to move downwards, and a sealing surface 802 on the valve core 7 is matched with a sealing surface 802 on the sleeve 8, and the valve is closed.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.

Claims (9)

1. A large-caliber high-temperature high-pressure regulating valve comprises a valve body (1), a valve cover (2) arranged on the valve body (1), an upper valve cover (3) arranged on the valve cover (2), a bracket (4) arranged on the upper valve cover (3), an electric actuator (5) arranged on the bracket (4) and a valve rod (6) connected with the electric actuator (5); a valve core (7) is arranged on the valve rod (6); a sleeve (8) is arranged between the valve body (1) and the valve cover (2); the valve rod (6) is sleeved with a corrugated pipe (9); the device is characterized in that a preheating mechanism (10) for heating the valve cover (2) and the corrugated pipe (9) before starting is arranged on the valve cover (2); the preheating mechanism (10) comprises a heat conduction oil valve cavity (1001) which is arranged on the valve cover (2) and is convenient for filling heat conduction oil, and a thermocouple (1002) which is arranged on the valve cover (2) and is used for monitoring the temperature in the valve; an anti-rotation structure (11) for preventing the valve rod (6) and the valve core (7) from rotating is arranged on the valve rod (6); and inclination angles of beta and alpha for improving the smoothness of the fluid flow passage are respectively arranged on the valve core (7) and the sleeve (8).
2. The large-caliber high-temperature and high-pressure regulating valve according to claim 1, wherein: a plurality of balance holes (701) are formed in the valve core (7); a plurality of fluid through holes (801) are formed in the sleeve (8); the < beta > is positioned at a balance hole (701) on the valve core (7); the < alpha > is positioned at a fluid through hole (801) on the sleeve (8).
3. The large-caliber high-temperature and high-pressure regulating valve according to claim 2, wherein: and the valve core (7) and the sleeve (8) are also provided with matched sealing surfaces (802).
4. The large-caliber high-temperature and high-pressure regulating valve according to claim 1, wherein: a heat conducting oil inlet (1003) and a heat conducting oil outlet (1004) which are communicated with the heat conducting oil valve cavity (10) are also arranged on the valve cover (2); the thermocouple (1002) is also provided with a temperature measuring point (1005) fixed on the valve cover (2).
5. The large-caliber high-temperature and high-pressure regulating valve according to claim 1, wherein: the valve rod (6) comprises a lower valve rod (601) and an upper valve rod (602) arranged on the lower valve rod (601); the valve core (7) and the corrugated pipe (9) are arranged on the lower valve rod (601); the anti-rotation structure (11) is arranged on the upper valve rod (602); a packing structure is arranged between the upper valve rod (602) and the upper valve cover (3) provided with the bracket (4).
6. The large-caliber high-temperature and high-pressure regulating valve according to claim 5, wherein: the anti-rotation structure (11) comprises an anti-rotation block (1101) assembled and fixed on the upper valve rod (602) and an anti-rotation limit groove (1102) which is arranged on the support (4) and is matched with the anti-rotation block (1101).
7. The large-caliber high-temperature and high-pressure regulating valve according to claim 5, wherein: the packing structure comprises a packing (301) arranged between an upper valve rod (602) and an upper valve cover (3) and a packing pressing plate (302) arranged on the packing (301) and fixed on the upper valve cover (3) through screws.
8. The large-caliber high-temperature and high-pressure regulating valve according to claim 7, wherein: the filler (301) comprises a double layer flexible graphite and nickel wire filler.
9. The large-caliber high-temperature and high-pressure regulating valve according to claim 1, wherein: a sealing lip welding is adopted between the valve body (1) and the valve cover (2); the valve body (1) is also provided with a fluid inlet (101) and a fluid outlet (102).
CN202310963639.9A 2023-08-02 2023-08-02 Large-caliber high-temperature high-pressure regulating valve Pending CN116906601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310963639.9A CN116906601A (en) 2023-08-02 2023-08-02 Large-caliber high-temperature high-pressure regulating valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310963639.9A CN116906601A (en) 2023-08-02 2023-08-02 Large-caliber high-temperature high-pressure regulating valve

Publications (1)

Publication Number Publication Date
CN116906601A true CN116906601A (en) 2023-10-20

Family

ID=88360111

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310963639.9A Pending CN116906601A (en) 2023-08-02 2023-08-02 Large-caliber high-temperature high-pressure regulating valve

Country Status (1)

Country Link
CN (1) CN116906601A (en)

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