CN115681535B - High-temperature pressure sealing gate valve - Google Patents
High-temperature pressure sealing gate valve Download PDFInfo
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- CN115681535B CN115681535B CN202211294677.1A CN202211294677A CN115681535B CN 115681535 B CN115681535 B CN 115681535B CN 202211294677 A CN202211294677 A CN 202211294677A CN 115681535 B CN115681535 B CN 115681535B
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Abstract
The invention provides a high-temperature pressure sealing gate valve, which relates to the technical field of valves and comprises a valve body, wherein the upper end of the valve body is provided with a valve cover, the valve cover is fixedly connected with the upper end of the valve body through a fastening bolt, a packing cavity is arranged in the valve cover, sealing packing is arranged in the packing cavity, the upper end of the valve cover is provided with a packing pressing plate, and the packing pressing plate is detachably connected with the valve cover through a connecting component. According to the invention, the packing pressing plate and the valve cover are detachably connected through the connecting component, and a special tool plate is not needed when the packing pressing plate is detached, so that the disassembly efficiency is improved, the quick replacement of the sealing packing is facilitated, the integral sealing performance of the sealing gate valve is ensured, and the labor intensity of staff is reduced.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a high-temperature pressure sealing gate valve.
Background
The sealing gate valve is an important control part of an aqueous medium fluid pipeline and can be used for conveying high-performance oil gas, the opening and closing part of the sealing gate valve is a gate plate, the moving direction of the gate plate is perpendicular to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate plate typically has two sealing surfaces, with the two sealing surfaces of the most commonly used mode gate valve forming a wedge shape and a wedge angle.
In order to improve sealing property of the sealing gate valve, valve rod packing is generally arranged in the sealing gate valve, the valve rod packing is fixed inside the valve cover by using a packing pressing plate, the aging problem of the valve rod packing can occur along with the increase of service time, and the sealing property of the valve rod packing is reduced, so that the valve rod packing needs to be replaced regularly, however, most of packing pressing plates of the existing high-temperature pressure sealing gate valve are fixedly connected with the valve cover by bolts, special tools are needed during disassembly, and the bolts are easy to rust, difficult to assemble and disassemble and high in working strength along with the increase of service time.
Disclosure of Invention
The invention provides a high-temperature pressure sealing gate valve, which is used for solving the technical problems that most of packing pressing plates of the existing high-temperature pressure sealing gate valve are fixedly connected with a valve cover through bolts, special tools are needed to be used for disassembly, and the bolts are easy to rust, difficult to disassemble and high in working strength along with the increase of service time.
In order to solve the technical problems, the invention discloses a high-temperature pressure sealing gate valve, which comprises: the valve body, the valve body upper end sets up the valve gap, the valve gap pass through fastening bolt with valve body upper end fixed connection, set up the packing chamber in the valve gap, set up sealed packing in the packing chamber, the valve gap upper end sets up the packing clamp plate, the packing clamp plate with the valve gap passes through coupling assembling and can dismantle the connection.
Preferably, the first valve chamber is communicated with the second valve chamber through a first communication hole, the second valve chamber is communicated with the flow channel, a flashboard is arranged in the first valve chamber, the flashboard is made of high-temperature and high-pressure resistant materials, a valve rod is arranged at the upper end of the flashboard in a rotating mode, the upper end of the valve rod sequentially penetrates through the valve cover, the sealing filler and the filler pressing plate to extend to the upper part of the filler pressing plate and is provided with a hand wheel, the valve rod is in threaded transmission connection with the penetrating position of the valve cover, and the valve rod is respectively in sliding connection with the penetrating position of the sealing filler and the filler pressing plate.
Preferably, the front and rear side walls of the shutter are respectively connected with the front and rear inner side walls of the first communication hole and the second valve chamber in a sealing and sliding manner.
Preferably, the packing pressing plate is T-shaped, and the outer wall of the vertical section of the packing pressing plate is in sliding connection with the inner wall of the packing cavity.
Preferably, the connection assembly is located above the sealing packing, and the connection assembly includes:
the pressing sleeve is sleeved on the valve rod, the pressing sleeve is positioned above the sealing filler, the inner wall of the pressing sleeve is in sliding connection with the outer wall of the valve rod, and the outer wall of the pressing sleeve is in sliding connection with the inner wall of the filler pressing plate;
the first clamping grooves are formed in the inner wall of the valve cover and are communicated with the packing cavity, two first clamping grooves are formed, and the two first clamping grooves are bilaterally symmetrical to the axis of the valve rod;
the mounting holes are formed in the packing pressing plate, one end of each mounting hole is communicated with the first clamping groove, the other end of each mounting hole is communicated with the inside of the packing cavity, and the two mounting holes are arranged and are bilaterally symmetrical relative to the axis of the valve rod;
the rotating shaft is arranged in the mounting hole, the front end and the rear end of the rotating shaft are respectively connected with the inner walls of the front side and the rear side of the mounting hole in a rotating mode, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fixedly connected with the rotating shaft, the other end of the torsion spring is fixedly connected with the inner wall of the upper end of the mounting hole, a first clamping block is fixedly arranged on the rotating shaft, the section of the first clamping block is fan-shaped, and the first clamping block is matched with the inner wall of the first clamping groove.
Preferably, still include spacing subassembly, spacing subassembly includes:
the second clamping grooves are formed in the outer wall of the pressing sleeve, a plurality of the second clamping grooves are formed in the outer wall of the pressing sleeve, and the second clamping grooves are distributed in an annular array along the circumferential direction of the pressing sleeve;
the sliding hole is horizontally arranged in the packing pressing plate, a clamping column is slidably arranged in the sliding hole, and a baffle is fixedly arranged at one end, far away from the pressing sleeve, of the clamping column;
the first spring is sleeved on the clamping column, one end of the first spring is fixedly connected with the outer wall of the packing pressing plate, and the other end of the first spring is fixedly connected with the side wall of the baffle plate.
Preferably, the pressing sleeve is fixedly provided with a rotating plate, the rotating plate is sleeved outside the valve rod and is in sliding connection with the outer wall of the valve rod, the lower end of the pressing sleeve is fixedly provided with a pressing pipe, the pressing pipe is sleeved on the outer wall of the valve rod, and the inner wall of the pressing pipe is in sliding connection with the outer wall of the valve rod.
Preferably, the pressure pipe lower extreme is the toper, the pressure pipe outer wall sets up first external screw thread, pressure pipe left and right sides symmetry sets up fixed subassembly, fixed subassembly includes:
the mounting groove is arranged on the inner wall of the packing pressing plate, and one side, close to the valve rod, of the mounting groove is communicated with the inside of the packing cavity;
the sliding rod is arranged in the mounting groove in a sliding manner, a clamping plate is fixedly arranged at one end, close to the valve rod, of the sliding rod, a second external thread is arranged on the outer wall, close to one side of the valve rod, of the clamping plate, and the second external thread is matched with the first external thread;
the second spring is arranged in the mounting groove, one end of the second spring is fixedly connected with one end of the sliding rod, which is far away from the valve rod, and the other end of the second spring is fixedly connected with the inner wall of one end of the mounting groove, which is far away from the valve rod.
Preferably, the symmetry of second valve chamber left and right sides sets up the fixed plate, the fixed plate outer wall with runner inner wall fixed connection, set up the second intercommunicating pore in the fixed plate, second intercommunicating pore left and right sides respectively with the runner intercommunication, the second intercommunicating pore diameter is less than the runner diameter, flashboard left and right sides symmetry sets up the installation cavity, set up seal assembly in the installation cavity, seal assembly includes:
the sealing plate is arranged in the mounting cavity, the sealing plate is in an isosceles trapezoid shape, the diameter of one end of the sealing plate, which is close to the fixing plate, is smaller than that of one end of the sealing plate, which is far away from the fixing plate, the sealing plate is connected with the inner wall of the mounting cavity through two connecting rods which are parallel to each other, one end of each connecting rod is hinged with the side wall of the sealing plate, the other end of each connecting rod is hinged with the inner wall of one end of the mounting cavity, which is far away from the fixing plate, and the height of one end of each connecting rod, which is close to the sealing plate, is lower than that of one end, which is far away from the sealing plate, of each connecting rod;
the sleeve, the sleeve sets up two between the connecting rod, sleeve one end with installation intracavity wall fixed connection, the slip sets up the slip post in the sleeve, the slip post is close to closing plate one end is fixed to be set up the contact plate, the contact plate with the closing plate is kept away from fixed plate one side butt, set up the third spring in the sleeve, third spring one end with slip post fixed connection, the third spring other end with installation intracavity wall fixed connection.
Preferably, the flashboard lower extreme is vertical to be set up the third intercommunicating pore, the installation cavity through the third intercommunicating pore with second valve chamber bottom intercommunication, the fixed montant that sets up of second valve chamber diapire, the montant with third intercommunicating pore inner wall sliding connection, the montant upper end sets up the ball.
The technical scheme of the invention has the following advantages: the invention provides a high-temperature pressure sealing gate valve, which comprises a valve body, wherein the upper end of the valve body is provided with a valve cover, the valve cover is fixedly connected with the upper end of the valve body through a fastening bolt, a packing cavity is arranged in the valve cover, sealing packing is arranged in the packing cavity, the upper end of the valve cover is provided with a packing pressing plate, and the packing pressing plate is detachably connected with the valve cover through a connecting component. According to the invention, the packing pressing plate and the valve cover are detachably connected through the connecting component, and a special tool plate is not needed when the packing pressing plate is detached, so that the disassembly efficiency is improved, the quick replacement of the sealing packing is facilitated, the integral sealing performance of the sealing gate valve is ensured, and the labor intensity of staff is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and other advantages of the invention may be realized and attained by means of the instrumentalities particularly pointed out in the written description and the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the high temperature pressure seal gate valve of the present invention in an open state;
FIG. 2 is an enlarged view of the invention at A in FIG. 1;
FIG. 3 is a schematic view of the high temperature pressure seal gate valve of the present invention in a closed state;
FIG. 4 is an enlarged view of the invention at B in FIG. 3;
FIG. 5 is an enlarged view of FIG. 4 at C in accordance with the present invention;
FIG. 6 is a schematic illustration of the seal assembly of the present invention in a non-sealing condition;
FIG. 7 is an enlarged view of the invention at D in FIG. 6;
FIG. 8 is a schematic view of a seal assembly of the present invention in a sealed condition;
fig. 9 is an enlarged view of fig. 8 at E in accordance with the present invention.
In the figure: 1. a valve body; 2. a valve cover; 3. a filler cavity; 4. sealing filler; 5. a packing pressing plate; 6. a first valve chamber; 7. a second valve chamber; 8. a first communication hole; 9. a flow passage; 10. a flashboard; 11. a valve stem; 12. a hand wheel; 13. pressing the sleeve; 14. a first clamping groove; 15. a mounting hole; 16. a rotating shaft; 17. a torsion spring; 18. a first clamping block; 19. a second clamping groove; 20. a sliding hole; 21. a clamping column; 22. a baffle; 23. a first spring; 24. a rotating plate; 25. pressing a pipe; 26. a mounting groove; 27. a slide bar; 28. a clamping plate; 29. a second spring; 30. a fixing plate; 31. a second communication hole; 32. a mounting cavity; 33. a sealing plate; 34. a connecting rod; 35. a sleeve; 36. a sliding column; 37. a contact plate; 38. a third spring; 39. a third communication hole; 40. a vertical rod; 41. and (3) rolling balls.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the embodiments may be combined with each other, but it is necessary to base that a person skilled in the art can implement the combination of technical solutions, when the combination of technical solutions contradicts or cannot be implemented, should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present invention.
Example 1:
the embodiment of the invention provides a high-temperature pressure sealing gate valve, as shown in fig. 1-9, comprising: the valve body 1, valve body 1 upper end sets up valve gap 2, valve gap 2 pass through fastening bolt with valve body 1 upper end fixed connection, set up packing chamber 3 in the valve gap 2, set up sealed packing 4 in packing chamber 3, valve gap 2 upper end sets up packing clamp plate 5, packing clamp plate 5 with valve gap 2 passes through coupling assembling and can dismantle the connection.
The working principle and the beneficial effects of the technical scheme are as follows: the valve body 1 is fixedly provided with the valve cover 2, the valve cover 2 is internally provided with the packing cavity 3, the packing cavity 3 is internally filled with sealing packing 4, the sealing packing 4 can play a sealing role, the packing pressing plate 5 is arranged above the sealing packing 4, the sealing packing 4 can be fixed in the packing cavity 3 by the packing pressing plate 5, the packing pressing plate 5 and the valve cover 2 are detachably connected through the connecting component, the connecting component is used for replacing the traditional bolt connection, the special tool plate is not needed when the packing pressing plate 5 is detached, the detachment efficiency is improved, the quick replacement of the sealing packing 4 is facilitated, the integral sealing performance of the sealing gate valve is ensured, and the labor intensity of workers is reduced.
Example 2
On the basis of the embodiment 1, as shown in fig. 1 and 2, a flow passage 9 is penetrated and arranged in the valve body 1, a first valve chamber 6 and a second valve chamber 7 are sequentially arranged in the center of the valve body 1 from top to bottom, the first valve chamber 6 is communicated with the second valve chamber 7 through a first communication hole 8, the second valve chamber 7 is communicated with the flow passage 9, a flashboard 10 is arranged in the first valve chamber 6, the flashboard 10 is made of a high-temperature and high-pressure resistant material, a valve rod 11 is rotatably arranged at the upper end of the flashboard 10, the upper end of the valve rod 11 sequentially penetrates through the valve cover 2, the sealing filler 4 and the filler pressing plate 5 to extend above the filler pressing plate 5, a hand wheel 12 is arranged, the valve rod 11 is in threaded transmission connection with the penetrating position of the valve cover 2, and the valve rod 11 is respectively in sliding connection with the penetrating position of the sealing filler 4 and the filler pressing plate 5;
the front and rear side walls of the flashboard 10 are respectively connected with the front and rear inner side walls of the first communication hole 8 and the second valve chamber 7 in a sealing sliding manner;
the packing pressing plate 5 is T-shaped, and the outer wall of the vertical section of the packing pressing plate 5 is in sliding connection with the inner wall of the packing cavity 3;
the valve body 1 and the valve cover 2 are made of titanium alloy steel.
The working principle and the beneficial effects of the technical scheme are as follows: the horizontal runner 9 that sets up in the valve body 1, fluid can flow in runner 9, valve body 1 center sets gradually first valve chamber 6 and second valve chamber 7, set up flashboard 10 in the first valve chamber 6, flashboard 10 upper end rotates and sets up valve rod 11, valve rod 11 and valve gap 2 screw drive connection, rotation hand wheel 12 can drive valve rod 11 at flashboard 10 upper end rotation, and valve rod 11 drives flashboard 10 along first valve chamber 6, the motion about the inner wall of second valve chamber 7, when flashboard 10 gets into in the second valve chamber 7 completely, flashboard 10 can separate runner 9, the fluid flow in the runner 9 has been hindered, sealing gate valve's closure has been realized, after flashboard 10 and the separation of second valve chamber 7 diapire, flow channel 9 communicates again, sealing gate valve's opening has been realized, sealing gate 4 and valve rod 11 sealing sliding connection, for valve rod 11 and valve gap 2 junction has provided the seal, sealing gate valve's sealing performance has been improved, valve body 1 all adopts high temperature resistant high pressure resistant material to make, the whole gate valve sealing can work under high temperature, clamp plate 5 is the T shape, clamp plate 5 is guaranteed that clamp plate 5 is in the T, clamp plate 5 is guaranteed to be in the seal clamp plate 5, seal plate 5 can extend to the tight to the inner pressure ring 4, on the aspect, seal end is guaranteed to seal packing 4 is closely and seal up to the end is guaranteed to seal down to the end, on the side, on the other hand seal packing 4 is tightly can extend to sealing gate plate 4.
Example 3
On the basis of embodiment 2, as shown in fig. 1 to 5, the connection assembly is located above the sealing packing 4, and the connection assembly includes:
the pressing sleeve 13 is sleeved on the valve rod 11, the pressing sleeve 13 is positioned above the sealing packing 4, the inner wall of the pressing sleeve 13 is in sliding connection with the outer wall of the valve rod 11, and the outer wall of the pressing sleeve 13 is in sliding connection with the inner wall of the packing pressing plate 5;
the first clamping grooves 14 are formed in the inner wall of the valve cover 2, the first clamping grooves 14 are communicated with the packing cavity 3, two first clamping grooves 14 are formed, and the two first clamping grooves 14 are bilaterally symmetrical relative to the axis of the valve rod 11;
the mounting holes 15 are formed in the packing pressing plate 5, one end of each mounting hole 15 is communicated with the first clamping groove 14, the other end of each mounting hole 15 is communicated with the inside of the packing cavity 3, two mounting holes 15 are formed, and the two mounting holes 15 are bilaterally symmetrical relative to the axis of the valve rod 11;
the rotation shaft 16, the rotation shaft 16 sets up in the mounting hole 15, both ends respectively with both sides inner wall rotation is connected around the mounting hole 15 around the rotation shaft 16, the torsional spring 17 is established to the cover on the rotation shaft 16, torsional spring 17 one end with rotation shaft 16 fixed connection, the torsional spring 17 other end and mounting hole 15 upper end inner wall fixed connection, the fixed first fixture block 18 that sets up on the rotation shaft 16, first fixture block 18 cross-section is fan-shaped, first fixture block 18 with first draw-in groove 14 inner wall looks adaptation.
The working principle and the beneficial effects of the technical scheme are as follows: when the connecting assembly is used, the packing pressing plate 5 is placed on the valve cover 2 until the lower end of the packing pressing plate 5 is abutted against the upper end of the sealing packing 4, at the moment, the lower end of the first clamping groove 14 is in the same horizontal plane with the lower end of the mounting hole 15, then the pressing sleeve 13 is pressed downwards, the pressing sleeve 13 slides downwards along the outer wall of the valve rod 11, the lower end of the pressing sleeve 13 is abutted against the upper end of the first clamping block 18, then the first clamping block 18 is driven to rotate in the direction away from the valve rod 11, the first clamping block 18 drives the rotating shaft 16 to overcome the force of the torsion spring 17 until one side of the first clamping block 18 is abutted against the upper end of the first clamping groove 14, at the moment, the packing pressing plate 5 is fixedly installed on the valve cover 2 through the cooperation of the first clamping block 18 and the first clamping groove 14, the first clamping block 18 is prevented from loosening by the outer wall of the pressing sleeve 13 under the action of the torsion spring 17, and only the pressing sleeve 13 is required to be manually pulled upwards, the pressing sleeve 13 slides upwards along the valve rod 11, and under the action of the torsion spring 17, the first clamping block 18 rotates in the direction towards the direction close to the valve rod 11 until the first clamping block 18 is separated from the first clamping block 18 and the first clamping block 14 and the sealing packing 4 is separated from the valve rod 4, the sealing packing 4 can be removed from the sealing packing 4, the sealing packing 4 can be separated from the sealing packing 4, and the sealing packing can be sealed from the sealing packing 4, and the sealing packing can be removed, and the sealing packing can be sealed from the sealing case 4 can be prevented.
Example 4
On the basis of embodiment 3, as shown in fig. 3, the device further comprises a limiting assembly, wherein the limiting assembly comprises:
the second clamping grooves 19 are formed in the outer wall of the pressing sleeve 13, a plurality of second clamping grooves 19 are formed in the second clamping grooves 19, and the second clamping grooves 19 are distributed in an annular array along the circumferential direction of the pressing sleeve 13;
the sliding hole 20 is horizontally arranged in the packing pressing plate 5, a clamping column 21 is arranged in the sliding hole 20 in a sliding mode, and a baffle 22 is fixedly arranged at one end, far away from the pressing sleeve 13, of the clamping column 21;
the first spring 23, the first spring 23 cover is established on the card post 21, first spring 23 one end with packing clamp plate 5 outer wall fixed connection, first spring 23 other end with baffle 22 lateral wall fixed connection.
The working principle and the beneficial effects of the technical scheme are as follows: after being connected with packing clamp plate 5 and valve gap 2, can carry out spacingly to pressing sleeve 13 through spacing subassembly, during the use, rotate pressing sleeve 13 for slide hole 20 aligns with arbitrary second draw-in groove 19, in first spring 23's effect, draw-in column 21 card goes into second draw-in groove 19, at this moment, pressing sleeve 13 just can't slide from top to bottom along valve rod 11 outer wall, when packing clamp plate 5 needs to be dismantled, only need pulling baffle 22, with draw-in column 21 and second draw-in groove 19 separation, alright pull-up pressing sleeve 13, through setting up spacing subassembly, can make pressing sleeve 13 fix in packing clamp plate 5, avoid personnel to make sealing gate valve sealing performance reduce because of the mistake pulling pressing sleeve 13 separates packing clamp plate 5 and valve gap 2, the mistake proofing performance of coupling assembling use has been improved.
Example 5
On the basis of embodiment 3 or 4, as shown in fig. 1-5, a rotating plate 24 is fixedly arranged at the upper end of the pressing sleeve 13, the rotating plate 24 is sleeved outside the valve rod 11 and is in sliding connection with the outer wall of the valve rod 11, a pressing pipe 25 is fixedly arranged at the lower end of the pressing sleeve 13, the pressing pipe 25 is sleeved on the outer wall of the valve rod 11, and the inner wall of the pressing pipe 25 is in sliding connection with the outer wall of the valve rod 11.
The working principle and the beneficial effects of the technical scheme are as follows: the pressing sleeve 13 is provided with the rotating plate 24, the rotating plate 24 can drive the pressing sleeve 13 to rotate, the cross section area of the rotating plate 24 is larger than that of the pressing sleeve 13, the outer wall of the rotating plate 24 is provided with anti-skidding patterns, the pressing sleeve 13 is convenient for a user to rotate, the lower end of the pressing sleeve 13 is fixedly provided with the pressing pipe 25, the diameter of the pressing pipe 25 is smaller than that of the pressing sleeve 13, two first clamping blocks 18 are positioned on the left side and the right side of the pressing pipe 25, when the packing pressing plate 5 is fixedly arranged on the valve cover 2, the lower end of the pressing pipe 25 is abutted to the upper end of the packing 4, and the joint of the upper end of the packing 4 and the valve rod 11 can be sealed through the sealing sliding connection of the pressing pipe 25 and the valve rod 11, so that the sealing performance is further enhanced.
Example 6
On the basis of embodiment 5, as shown in fig. 1-5, the lower end of the pressing tube 25 is tapered, the outer wall of the pressing tube 25 is provided with a first external thread, the left and right sides of the pressing tube 25 are symmetrically provided with fixing components, and the fixing components comprise:
the mounting groove 26 is formed in the inner wall of the packing pressing plate 5, and one side, close to the valve rod 11, of the mounting groove 26 is communicated with the inside of the packing cavity 3;
the sliding rod 27 is arranged in the mounting groove 26 in a sliding manner, a clamping plate 28 is fixedly arranged at one end of the sliding rod 27 close to the valve rod 11, a second external thread is arranged on the outer wall of one side of the clamping plate 28 close to the valve rod 11, and the second external thread is matched with the first external thread;
the second spring 29, the second spring 29 sets up in the mounting groove 26, second spring 29 one end with slide bar 27 is kept away from valve rod 11 one end fixed connection, the second spring 29 other end with mounting groove 26 is kept away from valve rod 11 one end inner wall fixed connection.
The working principle and the beneficial effects of the technical scheme are as follows: the fixed subassembly can fix pressure pipe 25, when installing packing clamp plate 5, push down pressure cover 13, press cover 13 drive pressure pipe 25 downstream, the pressure pipe 25 lower extreme is the toper setting, press pipe 25 downstream earlier with the cardboard 28 contact of both sides, then progressively drive cardboard 28 to keeping away from valve rod 11 direction motion, slide bar 27 slides in mounting groove 26, second spring 29 compresses, when first external screw thread and second external screw thread contact, second spring 29 is in the biggest degree of compression, this moment, rotate pressure cover 13 alright with drive pressure pipe 25 rotation, first external screw thread moves along the second external screw thread when pressure pipe 25 rotates, pressure pipe 25 has realized threaded transmission connection with cardboard 28, at this moment, under the screw thread effect, pressure pipe 25 just fixes in packing chamber 3, rotate pressure cover 13, until pressure pipe 25 and sealing packing 4 upper end butt, this moment packing clamp plate 5 fixed mounting is on valve gap 2, pressure pipe 25 compresses tightly sealing packing 4 in packing chamber 3, make sealing packing 4 can bear great pressure impact, the improvement sealing 4 nature has been improved, seal 4 is removed when the valve gap between the opposite direction, can be connected at first with the valve gap cover 13 through the reverse direction, can be with the fixed pressure cover 13 with the valve gap cover 13, can be connected at the axial seal cover 13 outside the axial compression, can be avoided moving the valve gap between the whole, the pressure cover is connected with 13, can be fixed with the axial seal cover 13, the axial compressor 13 is realized, at the axial compressor is connected, at the axial compressor, under the thread effect is under the axial compression, this can, sealing packing 4 can be compressed down, sealing 4 and sealing 4 on the sealing 4, and sealing 4 on the face when sealing is on the sealing, and when sealing 4 is on the sealing has and on.
Example 7
On the basis of any one of embodiments 2 to 6, as shown in fig. 6 to 9, the left and right sides of the second valve chamber 7 are symmetrically provided with a fixing plate 30, the outer wall of the fixing plate 30 is fixedly connected with the inner wall of the runner 9, the fixing plate 30 is provided with a second communication hole 31, the left and right sides of the second communication hole 31 are respectively communicated with the runner 9, the diameter of the second communication hole 31 is smaller than that of the runner 9, the left and right sides of the gate 10 are symmetrically provided with an installation cavity 32, the installation cavity 32 is internally provided with a sealing assembly, and the sealing assembly comprises:
the sealing plate 33 is arranged in the mounting cavity 32, the sealing plate 33 is in an isosceles trapezoid shape, the diameter of one end of the sealing plate 33, which is close to the fixed plate 30, is smaller than the diameter of one end of the sealing plate 33, which is far away from the fixed plate 30, the sealing plate 33 is connected with the inner wall of the mounting cavity 32 through two connecting rods 34 which are parallel to each other, one end of each connecting rod 34 is hinged with the side wall of the sealing plate 33, the other end of each connecting rod 34 is hinged with the inner wall of one end of the mounting cavity 32, which is far away from the fixed plate 30, and the height of one end of each connecting rod 34, which is close to the sealing plate 33, is lower than the height of one end of each connecting rod 34, which is far away from the sealing plate 33;
sleeve 35, sleeve 35 sets up two between the connecting rod 34, sleeve 35 one end with installation cavity 32 inner wall fixed connection, the slip sets up slip post 36 in the sleeve 35, slip post 36 is close to closing plate 33 one end is fixed to be set up contact plate 37, contact plate 37 with closing plate 33 is kept away from fixed plate 30 one side butt, set up third spring 38 in the sleeve 35, third spring 38 one end with slip post 36 fixed connection, the third spring 38 other end with installation cavity 32 inner wall fixed connection.
The working principle and the beneficial effects of the technical scheme are as follows: when the gate 10 moves downwards, the sealing assembly in the gate 10 also moves downwards synchronously, when the gate 10 gradually enters the second valve chamber 7, under the action of the elastic force of the third spring 38, the third spring 38 drives the sliding column 36 to move towards the direction close to the fixed plate 30, the sliding column 36 drives the sealing plate 33 to move towards the direction close to the fixed plate 30 through the contact plate 37, under the action of the two connecting rods 34, the sealing plate 33 deflects upwards in the moving process, after the bottom wall of the gate 10 contacts with the inner wall of the bottom of the second valve chamber 7, the sealing plate 33 is also abutted with the side wall of the fixed plate 30, the sealing assembly is in a sealing state, the sealing plate 33 can play a sealing role on the second communication hole 31, thereby further isolating the flow channel 9, sealing performance is improved, at the moment, the sealing filler 4 can be replaced, the influence of fluid in the flow channel 9 on the pressure and the temperature of the sealing filler 4 can be reduced, the replacement of the sealing filler 4 is more convenient, meanwhile, leakage of the fluid in the flow channel 9 is reduced, when the gate 10 is opened, the sealing plate 33 is separated from the fixed plate 30, the sealing plate 33 can retract into the valve body 32 under the action of the valve body 1, and the sealing assembly can be restored to the sealing assembly to the non-connected state.
Example 8
On the basis of embodiment 7, as shown in fig. 9, a third communication hole 39 is vertically arranged at the lower end of the gate plate 10, the installation cavity 32 is communicated with the bottom of the second valve chamber 7 through the third communication hole 39, a vertical rod 40 is fixedly arranged at the bottom wall of the second valve chamber 7, the vertical rod 40 is slidably connected with the inner wall of the third communication hole 39, and a ball 41 is arranged at the upper end of the vertical rod 40.
The working principle and the beneficial effects of the technical scheme are as follows: when the flashboard 10 moves downwards, the vertical rods 40 align to the third communication holes 39, the flashboard 10 moves downwards along the direction of the vertical rods 40, the stability of the downward pressing of the flashboard 10 is improved, the balls 41 at the upper ends of the vertical rods 40 can be abutted with the connecting rods 34 at the lower sides, so that the connecting rods 34 are pushed to swing upwards, after the sealing plate 33 is abutted with the fixed plate 30, the balls 41 also tightly push the connecting rods 34 at the lower sides, the fitting degree of the sealing plate 33 and the fixed plate 30 is enhanced, the sealing plate 33 is prevented from being flushed by high-pressure fluid, and the sealing performance of a sealing assembly is improved.
Example 9
On the basis of embodiment 2, further comprising a monitoring assembly comprising:
a pressure sensor provided in the first valve chamber 6 for detecting the air pressure inside the first valve chamber 6;
the alarm is arranged on the outer wall of the valve body 1;
the controller is arranged on the outer wall of the valve body 1 and is respectively and electrically connected with the pressure sensor, the timer and the alarm;
the controller controls the pressure sensor to detect the air pressure in the first valve chamber 6 after a preset time interval, and controls the alarm to work based on the detection value of the pressure sensor, and the method comprises the following steps:
step 1: based on the detection value of the pressure sensor, the actual leakage amount of the sealing position of the sealing packing 4 is calculated by the following formula:
wherein Q is 1 For the actual leakage amount, P, of the sealing position of the sealing filler 4 1 For the detected value of the pressure sensor at the last moment, P 2 For the detection value of the current moment of the pressure sensor, the interval duration between the last moment and the current moment is a preset time interval, V 1 For the internal volume of the valve body 1, T 1 For the preset time interval, P 0 Is at standard atmospheric pressure;
step 2: and (3) comparing the actual leakage amount of the sealing position of the sealing filler 4 with a preset leakage amount based on the calculation result of the step (1), and controlling the alarm to give an alarm prompt by the controller when the actual leakage amount is larger than the preset leakage amount.
The working principle and the beneficial effects of the technical scheme are as follows: the monitoring component can monitor the sealing performance of the sealing filler 4, calculates the actual leakage amount of the sealing position of the sealing filler 4, and compares the actual leakage amount with the preset leakage amount, wherein the preset time interval and the preset leakage amount are set by a user, and in the scheme, the preset time interval can be 1 hour, and the preset leakage amount is the rated capacity multiplied by 10 of the valve body 1 -4 When actually leakingWhen the quantity is greater than the preset leakage quantity, the sealing performance of the sealing packing 4 is poor, at the moment, the controller controls the alarm to send out an alarm prompt, and a user can replace the sealing packing 4 in time according to the alarm prompt, so that the overall sealing performance of the sealing gate valve is ensured.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. High temperature pressure sealing gate valve, its characterized in that includes: the valve comprises a valve body (1), wherein a valve cover (2) is arranged at the upper end of the valve body (1), the valve cover (2) is fixedly connected with the upper end of the valve body (1) through a fastening bolt, a packing cavity (3) is arranged in the valve cover (2), sealing packing (4) is arranged in the packing cavity (3), a packing pressing plate (5) is arranged at the upper end of the valve cover (2), and the packing pressing plate (5) is detachably connected with the valve cover (2) through a connecting component;
the valve is characterized in that a flow passage (9) is arranged in the valve body (1) in a penetrating manner, a first valve chamber (6) and a second valve chamber (7) are sequentially arranged in the center of the valve body (1) from top to bottom, the first valve chamber (6) is communicated with the second valve chamber (7) through a first communication hole (8), the second valve chamber (7) is communicated with the flow passage (9), a flashboard (10) is arranged in the first valve chamber (6), the flashboard (10) is made of a high-temperature and high-pressure resistant material, a valve rod (11) is arranged at the upper end of the flashboard (10) in a rotating manner, the upper end of the valve rod (11) sequentially penetrates through the valve cover (2), the sealing filler (4) and the packing pressing plate (5) to be extended above the packing pressing plate (5) and provided with a hand wheel (12), the valve rod (11) is in threaded transmission connection with the penetrating position of the valve cover (2), and the valve rod (11) is respectively connected with the penetrating position of the sealing filler (4) in a sliding manner.
The connection assembly is located above the sealing filler (4), and comprises:
the pressing sleeve (13) is sleeved on the valve rod (11), the pressing sleeve (13) is positioned above the sealing packing (4), the inner wall of the pressing sleeve (13) is in sliding connection with the outer wall of the valve rod (11), and the outer wall of the pressing sleeve (13) is in sliding connection with the inner wall of the packing pressing plate (5);
the first clamping grooves (14) are formed in the inner wall of the valve cover (2), the first clamping grooves (14) are communicated with the packing cavity (3), the number of the first clamping grooves (14) is two, and the two first clamping grooves (14) are bilaterally symmetrical relative to the axis of the valve rod (11);
the mounting holes (15) are formed in the packing pressing plate (5), one end of each mounting hole (15) is communicated with the first clamping groove (14), the other end of each mounting hole (15) is communicated with the inside of the packing cavity (3), two mounting holes (15) are formed, and the two mounting holes (15) are bilaterally symmetrical relative to the axis of the valve rod (11);
the rotary shaft (16), axis of rotation (16) set up in mounting hole (15), both ends respectively with both sides inner wall rotation is connected around mounting hole (15) around axis of rotation (16), torsional spring (17) are established to the cover on axis of rotation (16), torsional spring (17) one end with axis of rotation (16) fixed connection, torsional spring (17) other end and mounting hole (15) upper end inner wall fixed connection, fixed first fixture block (18) that set up on axis of rotation (16), first fixture block (18) cross-section is fan-shaped, first fixture block (18) with first draw-in groove (14) inner wall looks adaptation.
2. The high-temperature pressure sealing gate valve according to claim 1, wherein the front and rear side walls of the gate plate (10) are respectively in sealing sliding connection with the front and rear inner side walls of the first communication hole (8) and the second valve chamber (7).
3. The high-temperature pressure sealing gate valve according to claim 1, wherein the packing pressing plate (5) is in a T shape, and the outer wall of the vertical section of the packing pressing plate (5) is in sliding connection with the inner wall of the packing cavity (3).
4. The high temperature, pressure seal gate valve of claim 1, further comprising a stop assembly, the stop assembly comprising:
the second clamping grooves (19) are formed in the outer wall of the pressing sleeve (13), a plurality of second clamping grooves (19) are formed in the second clamping grooves (19), and the second clamping grooves (19) are distributed in an annular array along the circumferential direction of the pressing sleeve (13);
the sliding hole (20) is horizontally arranged in the packing pressing plate (5), a clamping column (21) is arranged in the sliding hole (20) in a sliding mode, and a baffle plate (22) is fixedly arranged at one end, far away from the pressing sleeve (13), of the clamping column (21);
the first spring (23), the first spring (23) cover is established on card post (21), first spring (23) one end with pack clamp plate (5) outer wall fixed connection, first spring (23) other end with baffle (22) lateral wall fixed connection.
5. The high-temperature pressure sealing gate valve according to claim 1, wherein a rotating plate (24) is fixedly arranged at the upper end of the pressing sleeve (13), the rotating plate (24) is sleeved outside the valve rod (11) and is in sliding connection with the outer wall of the valve rod (11), a pressing pipe (25) is fixedly arranged at the lower end of the pressing sleeve (13), the pressing pipe (25) is sleeved on the outer wall of the valve rod (11), and the inner wall of the pressing pipe (25) is in sliding connection with the outer wall of the valve rod (11).
6. The high temperature pressure sealing gate valve according to claim 5, wherein the lower end of the pressing pipe (25) is tapered, the outer wall of the pressing pipe (25) is provided with a first external thread, and the left and right sides of the pressing pipe (25) are symmetrically provided with fixing components, and the fixing components comprise:
the mounting groove (26) is formed in the inner wall of the packing pressing plate (5), and one side, close to the valve rod (11), of the mounting groove (26) is communicated with the inside of the packing cavity (3);
the sliding rod (27) is arranged in the mounting groove (26) in a sliding manner, a clamping plate (28) is fixedly arranged at one end, close to the valve rod (11), of the sliding rod (27), a second external thread is arranged on the outer wall, close to one side of the valve rod (11), of the clamping plate (28), and the second external thread is matched with the first external thread;
the second spring (29), second spring (29) set up in mounting groove (26), second spring (29) one end with slide bar (27) are kept away from valve rod (11) one end fixed connection, second spring (29) other end with mounting groove (26) are kept away from valve rod (11) one end inner wall fixed connection.
7. The high temperature pressure sealing gate valve according to claim 1, wherein the left and right sides of the second valve chamber (7) are symmetrically provided with fixing plates (30), the outer wall of the fixing plates (30) is fixedly connected with the inner wall of the runner (9), the fixing plates (30) are provided with second communication holes (31), the left and right sides of the second communication holes (31) are respectively communicated with the runner (9), the diameter of the second communication holes (31) is smaller than that of the runner (9), the left and right sides of the gate plate (10) are symmetrically provided with mounting cavities (32), and sealing components are arranged in the mounting cavities (32) and comprise:
the sealing plate (33), sealing plate (33) is arranged in installation cavity (32), sealing plate (33) is isosceles trapezoid, sealing plate (33) is close to fixed plate (30) one end diameter is less than sealing plate (33) is kept away from fixed plate (30) one end diameter, sealing plate (33) is connected with installation cavity (32) inner wall through two connecting rods (34) that are parallel to each other, connecting rod (34) one end with sealing plate (33) lateral wall hinge connection, connecting rod (34) other end with installation cavity (32) are kept away from fixed plate (30) one end inner wall hinge connection, connecting rod (34) are close to sealing plate (33) one end height is less than connecting rod (34) is kept away from sealing plate (33) one end height;
sleeve (35), sleeve (35) set up two between connecting rod (34), sleeve (35) one end with installation cavity (32) inner wall fixed connection, it sets up slip post (36) to slide in sleeve (35), slip post (36) are close to closing plate (33) one end is fixed sets up contact plate (37), contact plate (37) with closing plate (33) are kept away from fixed plate (30) one side butt, set up third spring (38) in sleeve (35), third spring (38) one end with slip post (36) fixed connection, the third spring (38) other end with installation cavity (32) inner wall fixed connection.
8. The high-temperature pressure sealing gate valve according to claim 7, wherein a third communication hole (39) is vertically formed in the lower end of the gate plate (10), the installation cavity (32) is communicated with the bottom of the second valve chamber (7) through the third communication hole (39), a vertical rod (40) is fixedly arranged on the bottom wall of the second valve chamber (7), the vertical rod (40) is slidably connected with the inner wall of the third communication hole (39), and a ball (41) is arranged at the upper end of the vertical rod (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294677.1A CN115681535B (en) | 2022-10-21 | 2022-10-21 | High-temperature pressure sealing gate valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294677.1A CN115681535B (en) | 2022-10-21 | 2022-10-21 | High-temperature pressure sealing gate valve |
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| CN115681535B true CN115681535B (en) | 2023-09-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203286121U (en) * | 2013-06-05 | 2013-11-13 | 环球阀门集团有限公司 | Self-sealing gate valve |
| CN206637102U (en) * | 2017-04-18 | 2017-11-14 | 浙江石化阀门有限公司 | A kind of ultra-low temperature throttle valve |
| CN208919368U (en) * | 2018-09-17 | 2019-05-31 | 江苏高华流体控制有限公司 | Novel fire resistant metal gate valve |
| CN211550589U (en) * | 2020-01-18 | 2020-09-22 | 上海亚奥阀门有限公司 | Forged steel gate valve |
| CN212718349U (en) * | 2020-05-20 | 2021-03-16 | 方正阀门集团股份有限公司 | Large-caliber low-leakage gate valve |
| CN215487978U (en) * | 2021-08-13 | 2022-01-11 | 亚登阀门管件有限公司 | Micro-leakage prevention gate valve |
-
2022
- 2022-10-21 CN CN202211294677.1A patent/CN115681535B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203286121U (en) * | 2013-06-05 | 2013-11-13 | 环球阀门集团有限公司 | Self-sealing gate valve |
| CN206637102U (en) * | 2017-04-18 | 2017-11-14 | 浙江石化阀门有限公司 | A kind of ultra-low temperature throttle valve |
| CN208919368U (en) * | 2018-09-17 | 2019-05-31 | 江苏高华流体控制有限公司 | Novel fire resistant metal gate valve |
| CN211550589U (en) * | 2020-01-18 | 2020-09-22 | 上海亚奥阀门有限公司 | Forged steel gate valve |
| CN212718349U (en) * | 2020-05-20 | 2021-03-16 | 方正阀门集团股份有限公司 | Large-caliber low-leakage gate valve |
| CN215487978U (en) * | 2021-08-13 | 2022-01-11 | 亚登阀门管件有限公司 | Micro-leakage prevention gate valve |
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| CN115681535A (en) | 2023-02-03 |
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