CN110762284B - High-temperature high-pressure reciprocating shaft sealing gas valve - Google Patents
High-temperature high-pressure reciprocating shaft sealing gas valve Download PDFInfo
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- CN110762284B CN110762284B CN201911053085.9A CN201911053085A CN110762284B CN 110762284 B CN110762284 B CN 110762284B CN 201911053085 A CN201911053085 A CN 201911053085A CN 110762284 B CN110762284 B CN 110762284B
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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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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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
- 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
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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
- 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
Abstract
The invention discloses a high-temperature high-pressure reciprocating shaft sealing gas valve, which relates to the technical field of gas control, and comprises: the valve comprises a valve main body, a first channel is arranged at one end of the valve main body and is communicated with a first cavity in the valve main body, and a first opening opposite to the first channel is formed in the other end of the valve main body; the stuffing box, the disc spring and the stuffing gland are sequentially abutted and arranged in the first channel; the valve core is coaxially arranged in the stuffing box, the disc spring and the packing gland and can reciprocate in the stuffing box, the disc spring, the packing gland, the first channel and the first cavity; the packing gland is used for being pressed by the pressure in the cavity of the valve main body and is matched with the disc spring to compress the packing box; the free end of the valve core is opposite to the first opening. According to the invention, the packing gland is matched with the disc spring, so that the sealing performance of a sealing gap in the valve is improved, the solid particle combustion product is prevented from entering, and the valve core is effectively prevented from being blocked.
Description
Technical Field
The invention relates to the technical field of gas control, in particular to a high-temperature high-pressure reciprocating shaft sealing gas valve.
Background
The high-temperature gas valve is used as an important component of an attitude orbit control system of the aerospace craft, and needs to bear extremely high pressure and temperature in the working process, and corrosive high-temperature gas introduced into the high-temperature gas valve also enters a sealing gap together with a solid particle combustion product, so that the valve core is possibly clamped; meanwhile, due to the limitation on space and mass, the valve is required to reduce the action execution force as small as possible while meeting the requirement of high reliability of dynamic seal. The valve structure at the present stage is difficult to meet the working requirements.
Therefore, a new high-temperature high-pressure reciprocating shaft sealing gas valve is urgently needed, the problems can be solved, and the technical requirements are met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the high-temperature high-pressure reciprocating shaft sealing gas valve, the sealing performance of a sealing gap in the valve is improved by matching the packing gland with the disc spring, solid particle combustion products are prevented from entering, and the valve core is effectively prevented from being clamped.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention discloses a high temperature and high pressure reciprocating shaft seal gas valve, comprising:
the valve comprises a valve main body, wherein one end of the valve main body is provided with a first channel which is communicated with a first cavity in the valve main body, and the other end of the valve main body is provided with a first opening which is opposite to the first channel;
the packing box, the disc spring and the packing gland are sequentially abutted and arranged in the first channel;
a spool coaxially disposed within the stuffing box, the disc spring, and the packing gland and reciprocally movable within the stuffing box, the disc spring, the packing gland, the first passage, and the first cavity; wherein the content of the first and second substances,
the packing gland is used for being pressed by the pressure in the cavity of the valve main body and is matched with the disc spring to tightly press the packing box;
the free end of the valve core is opposite to the first opening.
On the basis of the technical scheme, the stuffing box comprises a flexible sealing ring, a transfer guide ring and an annular gasket which are arranged in sequence;
the annular gasket is abutted to the disc spring.
On the basis of the technical scheme, the packing gland is provided with a cover hole for the valve core to reciprocate, and one end of the packing gland, which is far away from the disc spring, is provided with an inner hexagonal hole.
On the basis of the technical scheme, the packing gland comprises an annular side wall and an intermediate cover plate,
the middle cover plate is arranged inside the annular side wall along the length direction perpendicular to the annular side wall;
the middle cover plate is provided with a cover hole for the valve core to reciprocate, one end of the annular side wall is abutted against the disc spring, and one end of the annular side wall, which is far away from the disc spring, is provided with an inner hexagonal hole.
On the basis of the technical scheme, the side wall of the valve main body is provided with a gas inlet.
On the basis of the above technical scheme, the gas valve further comprises:
and the outlet end cover is positioned at the first opening and is matched with the valve main body to be connected with an outlet end cover, and an outlet which is communicated with the first opening and is coaxially arranged with the first channel and the valve core is arranged on the outlet end cover.
On the basis of the technical scheme, a first static sealing ring and a second static sealing ring are arranged on the connecting surface of the valve main body and the outlet end cover.
On the basis of the technical scheme, the valve core is in a state of being close to or far away from the outlet in the reciprocating motion.
On the basis of the technical scheme, the transfer guide ring, the annular gasket, the disc spring and the packing gland are all made of high-temperature alloy materials.
In a second aspect, the present invention also discloses another high-temperature and high-pressure reciprocating shaft seal gas valve, comprising:
the gas-operated valve comprises a valve main body, wherein one end of the valve main body is provided with a first channel, the first channel is communicated with a first cavity in the valve main body, the other end of the valve main body is provided with a first opening which is opposite to the first channel, and the side wall of the valve main body is provided with a gas inlet;
the packing box, the disc spring and the packing gland are sequentially abutted and arranged in the first channel;
a spool coaxially disposed within the stuffing box, the disc spring, and the packing gland and reciprocally movable within the stuffing box, the disc spring, the packing gland, the first passage, and the first cavity;
the outlet end cover is positioned at the first opening and is matched with the valve main body to be connected with an outlet end cover, and an outlet which is communicated with the first opening and is coaxially arranged with the first channel and the valve core is arranged on the outlet end cover; wherein the content of the first and second substances,
the packing gland is used for being pressed by the pressure in the cavity of the valve main body and is matched with the disc spring to tightly press the packing box;
the free end of the valve core is opposite to the first opening.
Compared with the prior art, the invention has the advantages that:
1. according to the invention, the packing gland is matched with the disc spring, and the disc spring can compensate abrasion of the packing box in the working process through deformation, so that the sealing performance of a sealing gap in the valve is improved, solid particle combustion products are prevented from entering, and the valve core is effectively prevented from being clamped.
2. In the invention, when the air pressure in the valve cavity is increased, the packing gland can be influenced by pressure to extrude the disc spring and further extrude the packing box, thereby further improving the sealing performance of the sealing gap in the valve.
3. According to the invention, the packing gland plays a certain isolation role, so that the influence of solid particle combustion products on the packing box is avoided, the pressure and the temperature in the valve cavity can be slowed down, and the packing box is effectively protected.
Drawings
Fig. 1 is a schematic structural view of a medium-high temperature and high pressure reciprocating shaft seal gas valve according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a high-temperature high-pressure reciprocating shaft seal gas valve according to a second embodiment of the present invention;
fig. 3 is a schematic structural view of a valve core and a stuffing box in a medium-high temperature and high-pressure reciprocating shaft seal gas valve according to a second embodiment of the present invention;
fig. 4 is a schematic structural view of an outlet end cover in a high-temperature and high-pressure reciprocating shaft seal gas valve according to a second embodiment of the invention;
FIG. 5 is a sectional view of an outlet end cap in a high temperature and high pressure reciprocating shaft seal gas valve in accordance with a second embodiment of the present invention;
in the figure: 1. a valve body; 10. a first channel; 11. a first cavity; 12. a first opening; 13. a gas inlet; 2. a stuffing box; 20. a flexible sealing ring; 21. a transfer guide ring; 22. an annular gasket; 3. a disc spring; 4. a packing gland; 40. covering the hole; 41. an inner hexagonal hole; 42. an annular sidewall; 43. a middle cover plate; 5. a valve core; 6. an outlet end cap; 60. an outlet; 7. a first stationary seal ring; 8. a second stationary seal ring; 9. and a power device.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The embodiment of the invention provides a high-temperature high-pressure reciprocating shaft sealing gas valve, which is characterized in that a packing gland is matched with a disc spring, the disc spring can compensate abrasion of a packing box in the working process through deformation, the sealing performance of a sealing gap in the valve is improved, solid particle combustion products are prevented from entering, and the valve core is effectively prevented from being clamped and blocked.
In order to achieve the technical effects, the general idea of the application is as follows:
a high temperature, high pressure reciprocating shaft seal gas valve, comprising:
the valve comprises a valve body 1, wherein one end of the valve body 1 is provided with a first channel 10, the first channel 10 is communicated with a first cavity 11 in the valve body 1, and the other end of the valve body 1 is provided with a first opening 12 facing the first channel 10;
the stuffing box 2, the disc spring 3 and the stuffing gland 4 are sequentially abutted against each other and arranged in the first channel 10;
the valve core 5 is coaxially arranged in the stuffing box 2, the disc spring 3 and the packing gland 4 and can reciprocate in the stuffing box 2, the disc spring 3, the packing gland 4, the first channel 10 and the first cavity 11; wherein the content of the first and second substances,
the packing gland 4 is used for being pressed in the cavity of the valve main body 1 and is matched with the disc spring 3 to compress the packing box 2;
the free end of the spool 5 faces the first opening 12.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1, embodiment 1 of the present invention provides a high-temperature and high-pressure reciprocating shaft seal gas valve, including:
the valve comprises a valve body 1, wherein one end of the valve body 1 is provided with a first channel 10, the first channel 10 is communicated with a first cavity 11 in the valve body 1, and the other end of the valve body 1 is provided with a first opening 12 facing the first channel 10;
the stuffing box 2, the disc spring 3 and the stuffing gland 4 are sequentially abutted against each other and arranged in the first channel 10;
the valve core 5 is coaxially arranged in the stuffing box 2, the disc spring 3 and the packing gland 4 and can reciprocate in the stuffing box 2, the disc spring 3, the packing gland 4, the first channel 10 and the first cavity 11; wherein the content of the first and second substances,
the packing gland 4 is used for being pressed in the cavity of the valve main body 1 and is matched with the disc spring 3 to compress the packing box 2;
the free end of the spool 5 faces the first opening 12.
In the embodiment of the invention, a valve main body 1 is used as a main body structure of a high-temperature high-pressure reciprocating shaft sealing gas valve and is an irregular shell with a cavity inside, one end of the valve main body 1 is provided with a first channel 10, the first channel 10 is communicated with a first cavity 11 inside the valve main body 1, the first channel 10 is mainly used for installing a stuffing box 2, a disc spring 3 and a stuffing gland 4 and enabling a valve core 5 to reciprocate, the other end of the valve main body 1 is provided with a first opening 12 facing the first channel 10, the first opening 12 is used for being matched with the valve core 5 to work, and the valve core 5 can be far away from or close to the first opening 12 when reciprocating;
the stuffing box 2, the disc spring 3 and the packing gland 4 are sequentially arranged in the first channel 10 in a propping manner, in particular to the sequential propping arrangement that the stuffing box 2, the disc spring 3 and the packing gland 4 are sequentially arranged in the first channel 10, the stuffing box 2 props against the disc spring 3, the disc spring 3 props against the packing gland 4,
if necessary, the stuffing box 2, the disc spring 3 and the stuffing gland 4 are coaxial;
the valve core 5 is coaxially arranged in the stuffing box 2, the disc spring 3 and the stuffing cover 4 and can reciprocate in the stuffing box 2, the disc spring 3, the stuffing cover 4, the first channel 10 and the first cavity 11, one end of the valve core 5 is far away from or close to the first opening 12, the other end of the valve core 5 is provided with a power device 9, and the power device 9 is used for providing power for the valve core 5 during reciprocating motion;
when 11 inside pressures in first cavity increase, gland 4 can receive the extrusion of pressure, at this moment, can compress tightly packing box 2 through extrusion dish spring 3, further promotes sealed effect, avoids the solid particle combustion product in the corrosivity high temperature gas in the work to enter into sealed clearance, and then avoids leading to case 5 jamming.
In the embodiment of the invention, the packing gland 4 is matched with the disc spring 3, and the disc spring 3 can compensate abrasion of the packing box 2 in the working process through deformation, so that the sealing performance of a sealing gap in the valve is improved, solid particle combustion products are prevented from entering, and the valve core 5 is effectively prevented from being clamped and blocked.
It should be noted that the shape of the first cavity 11 can be adjusted according to the requirement;
when the stuffing box 2 and the stuffing gland 4 are different in size, the first channel 10 can be divided into a first sub-channel and a second sub-channel, the inner wall of the first sub-channel is matched with the outer wall of the stuffing box 2, and the inner wall of the second sub-channel is matched with the outer wall of the stuffing gland 4;
in order to enable the gland 4 to press the stuffing box 2, the cross-sectional area of the gland 4 is required to be larger than that of the stuffing box 2, and the internal dimension of the second sub-channel is larger than that of the first sub-channel.
It should be noted that, on the premise of ensuring the functions of each component, each component in the embodiment of the present invention is connected with other components as tightly as possible at the joints or contact surfaces to ensure that the sealing performance is not affected;
in addition, the embodiment of the invention is a high-temperature high-pressure reciprocating shaft seal gas valve, the gas valve can adapt to medium temperature range of 800-1100 ℃ and pressure value range of 8-10 MPa, and the material can be improved to adapt to higher temperature or higher pressure environment if necessary.
Example two
Referring to fig. 2 to 5, on the basis of embodiment 1 of the present invention, embodiment 2 of the present invention provides another high-temperature and high-pressure reciprocating shaft seal gas valve, which is different from embodiment 1 in that:
the stuffing box 2 comprises a flexible sealing ring 20, a transfer guide ring 21 and an annular gasket 22 which are arranged in sequence;
the annular washer 22 is disposed against the disc spring 3.
If necessary, additional sealing rings may be added between the flexible sealing ring 20, the transfer guide ring 21 and the annular gasket 22 for further improving the sealing performance.
In the embodiment of the invention, the flexible sealing ring 20, the transfer guide ring 21, the annular gasket 22 and the disc spring 3 of the stuffing box 2 adopt a combined sealing form, and the radial stress distribution level of the inner wall surface and the outer wall surface of the stuffing box 2 is adjusted through the placement sequence of the flexible sealing ring 20, the transfer guide ring 21 and the annular gasket 22, so that the sealing efficiency of the stuffing box 2 in the unit height direction is increased, and the friction resistance of the valve core 5 during reciprocating motion is reduced.
In another embodiment of the present invention, a cover hole 40 for reciprocating the valve core 5 is formed in the packing gland 4, and an inner hexagonal hole 41 is formed at one end of the packing gland 4 far away from the disc spring 3.
In another embodiment of this embodiment of the invention, the packing gland 4 includes an annular sidewall 42 and an intermediate cover plate 43,
an intermediate cover plate 43 is arranged inside the annular side wall 42 in a direction perpendicular to the length direction of the annular side wall 42;
the middle cover plate 43 is provided with a cover hole 40 for the valve core 5 to reciprocate, one end of the annular side wall 42 is abutted against the disc spring 3, and one end of the annular side wall 42, which is far away from the disc spring 3, is provided with an inner hexagonal hole 41.
In the embodiment of the invention, the valve core 5 is in a linear reciprocating motion mode, so that better flow regulation characteristics can be obtained. Compared with the traditional packing seal, the packing gland 4 in the embodiment of the invention is provided with a compression nut structure, a counter bore is drilled at one side close to the packing box 2 by utilizing the internal space of the gland for mounting and limiting the disc spring 3, an internal hexagonal hole 41 is drilled at the medium side for applying a compression torque, and meanwhile, the compression nut structure is arranged at one side of a high-pressure cavity, so that the structural space is reduced, and the sealing reliability is improved by utilizing the pressure of the valve cavity during working. During the assembly, gland 4 can set up in first passageway 10 through threaded connection mode, through applying the tightening moment to gland 4, transmit the flexible sealing ring 20 of gland 2 with the transmission guide ring 21 of power through dish spring 3 and gland 2, thereby make the sealed face of flexible sealing ring 20 and case 5 form initial sealed specific pressure, simultaneously because set up gland 4 in the high-pressure side, the pretightning force direction that gland 4 applied for gland 2 is the same with gland 4 in valve during operation, thereby make gland 2 receive bigger extrusion force, cause sealed effect better.
In the embodiment of the invention, due to the structural characteristics of the packing gland 4 at the high-temperature high-pressure end, and the small clearance fit among the disc spring 3, the annular gasket 22 and the outer circular surface of the valve core 5, a certain clearance sealing effect is formed when gas passes through the small clearance fit, a certain pressure reduction and temperature reduction effect is realized on the high-temperature high-pressure gas, the pressure of the gas entering the flexible sealing ring 20 is reduced, the relatively compact axial space of the packing box 2 is effectively utilized, and the overall structural space size is saved. Meanwhile, the packing gland 4 is arranged on the high-pressure side and generates positive pressure on the end face under the pressure of the high-temperature gas, and can better compress the disc spring 3 and the flexible sealing ring 20, so that the high-temperature gas is prevented from leaking from the valve core during working, the sealing pressure is automatically adjusted along with the pressure of the high-temperature gas, and a pressure sensitive dynamic sealing structure is formed.
In addition, the flexible sealing ring 20 can use flexible graphite packing, because the radial pressure required by the packing box 2 is provided by the axial pre-pressure applied to the flexible sealing ring 20 by the packing gland 4, when the flexible sealing ring 20 generates certain abrasion due to the reciprocating motion friction of the valve core 5 in the working process, the disc spring 3 can generate deformation to push the annular gasket 22 inwards, and the radial force on each contact point among the flexible sealing ring 20, the valve core 5 and the valve main body 1 can be effectively compensated in time, thereby further improving the sealing reliability.
In another embodiment of the present embodiment, the side wall of the valve body 1 is provided with a gas inlet 13.
In another embodiment of the present invention, the gas valve further comprises:
the outlet end cover 6 is positioned at the first opening 12 and is matched with the valve body 1, and an outlet 60 which is communicated with the first opening 12 and is coaxially arranged with the first channel 10 and the valve core 5 is arranged on the outlet end cover 6.
In another embodiment of the present invention, the connection surface of the valve main body 1 and the outlet end cover 6 is provided with a first static sealing ring 7 and a second static sealing ring 8.
In the embodiment of the invention, the outlet end cover 6 adopts the end face sealing structures of the first static sealing ring 7 and the second static sealing ring 8 to realize static sealing, and as the packing gland 4 is arranged at the high-pressure side, the diameter of the packing gland is much larger than that of the outlet 60, the split design of the valve main body 1 and the outlet end cover 6 is adopted, and the external part applies pressing force through bolts/nuts, so that the first static sealing ring 7 and the second static sealing ring 8 are deformed, and the sealing effect is realized.
In another embodiment of the present embodiment, the valve body 5 is in a state of being close to or far from the outlet 60 in the reciprocating motion.
In the embodiment of the invention, when the high-temperature and high-pressure fuel gas flow control valve works, the high-temperature and high-pressure fuel gas flows into the first cavity 11 of the valve main body 1 from the fuel gas inlet 13, the valve core 5 makes reciprocating linear motion, and the axial distance between the valve core 5 and the outlet 60 of the outlet end cover 6 is changed, so that the flow area of the outlet 60 is changed, the outlet flow is changed from 0-100%, and the flow control function of the high-temperature and high-pressure fuel gas is realized.
In another embodiment of the present invention, the transmission guide ring 21, the annular gasket 22, the disc spring 3, and the packing gland 4 are all made of high temperature alloy material.
In the embodiment of the invention, the valve core 5 is made of TZM alloy material, the annular gasket 22 of the transmission guide ring 21, the disc spring 3 and the packing gland 4 are made of high-temperature alloy material, the high-temperature high-pressure working environment with the temperature of more than 1000 ℃ can be adapted, and the risk of the valve core 5 acting jamming under the high-temperature condition is further reduced by utilizing the difference of linear expansion coefficients between the two alloys;
the flexible sealing ring 20 can be made of high temperature polytetrafluoroethylene, high temperature alloy graphite packing or flexible graphite ring.
It should be noted that, when the high-temperature and high-pressure reciprocating shaft seal gas valve is installed, the flexible sealing ring 20, the transfer guide ring 21, the annular gasket 22 and the disc spring 3 are sequentially sleeved on the valve core 5 in sequence to be installed into the valve main body 1, the packing gland 4 is screwed in from one side of the outlet end cover 6 and is pressed tightly, and finally the outlet end cover 6 is pressed tightly through bolts or other methods.
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 high temperature and high pressure reciprocating shaft seal gas valve, characterized in that the gas valve includes:
the valve comprises a valve main body (1), wherein one end of the valve main body (1) is provided with a first channel (10), the first channel (10) is communicated with a first cavity (11) in the valve main body (1), and the other end of the valve main body (1) is provided with a first opening (12) which is opposite to the first channel (10);
the packing box (2), the disc spring (3) and the packing gland (4) are sequentially abutted against each other and arranged in the first channel (10);
a spool (5) coaxially disposed within the stuffing box (2), the disc spring (3) and the gland (4) and reciprocally movable within the stuffing box (2), the disc spring (3), the gland (4), the first passage (10) and the first cavity (11); wherein the content of the first and second substances,
the packing gland (4) is used for being pressed by the pressure in the cavity of the valve body (1) and is matched with the disc spring (3) to press the packing box (2);
the free end of the valve core (5) is opposite to the first opening (12).
2. A high-temperature high-pressure reciprocating shaft-sealed gas valve as claimed in claim 1, wherein the stuffing box (2) comprises a flexible sealing ring (20), a transfer guide ring (21) and an annular gasket (22) which are arranged in sequence;
the annular gasket (22) is abutted to the disc spring (3).
3. A high temperature, high pressure reciprocating shaft seal gas valve as defined in claim 1, wherein:
the packing gland (4) is provided with a cover hole (40) for the valve core (5) to reciprocate, and one end of the packing gland (4) far away from the disc spring (3) is provided with an inner hexagonal hole (41).
4. A high temperature, high pressure reciprocating shaft seal gas valve as defined in claim 1, wherein:
the packing gland (4) comprises an annular side wall (42) and an intermediate cover plate (43),
the middle cover plate (43) is arranged inside the annular side wall (42) along the length direction perpendicular to the annular side wall (42);
the middle cover plate (43) is provided with a cover hole (40) for the valve core (5) to reciprocate, one end of the annular side wall (42) is abutted against the disc spring (3), and one end of the annular side wall (42), which is far away from the disc spring (3), is provided with an inner hexagonal hole (41).
5. A high temperature, high pressure reciprocating shaft seal gas valve as defined in claim 1, wherein:
the side wall of the valve main body (1) is provided with a gas inlet (13).
6. A high temperature, high pressure reciprocating shaft sealed gas valve as claimed in claim 1, further comprising:
the outlet end cover (6) is positioned at the first opening (12) and is matched and connected with the valve main body (1), and an outlet (60) which is communicated with the first opening (12) and is coaxially arranged with the first channel (10) and the valve core (5) is arranged on the outlet end cover (6).
7. The high temperature, high pressure reciprocating shaft seal gas valve of claim 6, wherein:
the connection surface of the valve main body (1) and the outlet end cover (6) is provided with a first static sealing ring (7) and a second static sealing ring (8).
8. The high temperature, high pressure reciprocating shaft seal gas valve of claim 6, wherein:
the valve element (5) is in a state of being close to or far from the outlet (60) in the reciprocating motion.
9. The high temperature, high pressure reciprocating shaft seal gas valve of claim 6, wherein:
the transmission guide ring (21), the annular gasket (22), the disc spring (3) and the packing gland (4) are all made of high-temperature alloy materials.
10. A high temperature and high pressure reciprocating shaft seal gas valve, characterized in that the gas valve includes:
the gas-operated valve comprises a valve main body (1), wherein one end of the valve main body (1) is provided with a first channel (10), the first channel (10) is communicated with a first cavity (11) in the valve main body (1), the other end of the valve main body (1) is provided with a first opening (12) which is opposite to the first channel (10), and the side wall of the valve main body (1) is provided with a gas inlet (13);
the packing box (2), the disc spring (3) and the packing gland (4) are sequentially abutted against each other and arranged in the first channel (10);
a spool (5) coaxially disposed within the stuffing box (2), the disc spring (3) and the gland (4) and reciprocally movable within the stuffing box (2), the disc spring (3), the gland (4), the first passage (10) and the first cavity (11);
the outlet end cover (6) is positioned at the first opening (12) and is matched and connected with the valve main body (1), and an outlet (60) which is communicated with the first opening (12) and is coaxially arranged with the first channel (10) and the valve core (5) is arranged on the outlet end cover (6); wherein the content of the first and second substances,
the packing gland (4) is used for being pressed by the pressure in the cavity of the valve body (1) and is matched with the disc spring (3) to press the packing box (2);
the free end of the valve core is opposite to the first opening (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053085.9A CN110762284B (en) | 2019-10-31 | 2019-10-31 | High-temperature high-pressure reciprocating shaft sealing gas valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911053085.9A CN110762284B (en) | 2019-10-31 | 2019-10-31 | High-temperature high-pressure reciprocating shaft sealing gas valve |
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| CN110762284A CN110762284A (en) | 2020-02-07 |
| CN110762284B true CN110762284B (en) | 2021-08-03 |
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| CN201911053085.9A Active CN110762284B (en) | 2019-10-31 | 2019-10-31 | High-temperature high-pressure reciprocating shaft sealing gas valve |
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| CN2336140Y (en) * | 1997-09-30 | 1999-09-01 | 成都市成华区仪表阀门厂 | Durable stop valve |
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| JP2009036362A (en) * | 2007-08-03 | 2009-02-19 | Yamatake Corp | Control valve |
| CN202790563U (en) * | 2012-09-08 | 2013-03-13 | 环球阀门集团有限公司 | High-temperature high-pressure forged steel stop valve |
| CN106838318A (en) * | 2015-12-05 | 2017-06-13 | 哈尔滨顺芝科技有限公司 | High temperature resistant self-tightening type high-temperature and high-pressure sealing device and encapsulating method |
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| CN110762284A (en) | 2020-02-07 |
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