CN210716010U - Large-diameter ultrahigh-pressure-difference steam emptying valve - Google Patents
Large-diameter ultrahigh-pressure-difference steam emptying valve Download PDFInfo
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- CN210716010U CN210716010U CN201921293339.XU CN201921293339U CN210716010U CN 210716010 U CN210716010 U CN 210716010U CN 201921293339 U CN201921293339 U CN 201921293339U CN 210716010 U CN210716010 U CN 210716010U
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Abstract
The utility model relates to a large-caliber ultrahigh-pressure-difference steam emptying valve, which comprises a valve body, wherein a self-sealing valve seat is arranged in the valve body, a labyrinth sleeve and a pressing ring are sequentially connected on the self-sealing valve seat, the pressing ring, the labyrinth sleeve and the self-sealing valve seat are tightly pressed in the valve body through a pressing quarter ring, the upper end of the valve body is connected with a valve cover pressing plate, a self-sealing valve cover is arranged in the valve cover pressing plate, a sealing end of the self-sealing valve cover is connected with the valve cover pressing plate through a valve cover adjusting bolt and a valve cover nut, a valve cover self-sealing ring is arranged between the sealing end and the valve body, a valve cover quarter ring is arranged at the upper side of the sealing end of the self-sealing valve cover in the valve body, a ladder valve core is arranged in the pressing ring, the, the valve seat of the large-caliber ultrahigh-pressure-difference steam vent valve is detachable, the installation and the maintenance are convenient, the operation is stable, and the sealing is firm.
Description
Technical Field
The utility model relates to a steam atmospheric valve especially relates to heavy-calibre superhigh pressure difference steam atmospheric valve.
Background
In order to protect a large-caliber high-pressure-difference large-flow steam emptying valve arranged on a steam main pipe of an air separation device in a large-scale coal chemical engineering project, the valve under the occasion depends on imported products for a long time, basically depends on the imported products, and basically has a porous or labyrinth sleeve valve structure, a self-sealing valve cover, a valve seat and valve body integrated type and a pilot valve core structure. Because the large-caliber ultra-high pressure difference emptying application occasion is adopted, the application requirements of high pressure difference and low noise can be met only by using a multi-layer labyrinth sleeve structure, and because the connection with the stuffing box is not designed well, a plurality of labyrinth sleeves are integrated with the valve seat, and are connected with the valve seat through the lengthened screw, and the screw bears great medium pressure. The pilot valve core structure is more favorable for the sealing requirement above the V level, and the labyrinth sleeve structure is more suitable for high pressure difference media. However, in the actual use process, the problems that the small flow cannot be adjusted, the thrust of the valve is increased after the pilot valve core is opened, the valve is easy to surge in the closing process and the like often occur; because the labyrinth sleeve is arranged on the valve seat, the high-pressure medium is directly put into the valve seat without being decompressed, so that the connecting pin bears great pressure, the pin can be broken or failed, the labyrinth sleeve is finally scattered, and the accident can happen to products imported on site. Therefore, changing the current structural form and avoiding the above problems are important points and difficulties in development.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defects and carries out research and improvement to provide a large-caliber ultrahigh-pressure-difference steam vent valve.
The utility model discloses the technical scheme who adopts as follows:
the large-caliber ultrahigh-pressure-difference steam emptying valve comprises a valve body, wherein a self-sealing valve seat is arranged in the valve body, a labyrinth sleeve and a pressing ring are sequentially connected onto the self-sealing valve seat, the pressing ring, the labyrinth sleeve and the self-sealing valve seat are tightly pressed in the valve body through a pressing four-way ring connected in the valve body, the upper end of the valve body is connected with a valve cover pressing plate, a self-sealing valve cover penetrates through the valve cover pressing plate, the sealing end of the self-sealing valve cover, which is positioned in the valve body, is connected with the valve cover pressing plate through a valve cover adjusting bolt and a valve cover nut, a valve cover self-sealing ring is arranged between the sealing end and the valve body, a valve cover four-way ring is arranged on the upper side of the sealing end of the self-sealing valve cover, a stepped valve core is arranged in, and the valve rod and the self-sealing valve cover are sealed through a valve rod sealing mechanism.
As a further improvement of the above technical solution:
the self-sealing valve seat and the valve body are sealed through the valve seat self-sealing ring, the lower end of the self-sealing valve seat is provided with the U-shaped structure, the side wall of the U-shaped structure is provided with the shunt small hole, and the bottom plate of the U-shaped structure is provided with the steam outlet.
The labyrinth is characterized in that the outer side of the labyrinth sleeve is sleeved with a protective sleeve, a plurality of strip runner grooves communicated with runners of the labyrinth are formed in the protective sleeve, a pin hole is formed in the labyrinth sleeve and the protective sleeve in a matched mode, a positioning pin penetrates through the pin hole, and the labyrinth sleeve and the protective sleeve are connected with a pressing ring and a self-sealing valve seat through the positioning pin.
Set up C shape ring pressure cover before compressing tightly quarter ring and clamping ring, compress tightly quarter ring and connect adjusting screw, the adjusting screw lower extreme is worn in the locating hole that C shape ring pressure cover upside was seted up, just set up between C shape ring pressure cover and valve body and the clamping ring and be used for sealed clamping ring self sealss C shape ring, the dish spring pressure cover is established to adjusting screw upper end cover, the adjusting screw outside is located the dish spring pressure cover and compresses tightly between the quarter ring and overlap and establish locking dish spring, the dish spring pressure cover is located the screw clamp plate that adjusting screw was pushed down in the grafting of adjusting screw upper end, screw clamp plate and adjusting screw pass through holding screw and are connected.
And a self-sealing ring pressing plate for pressing the valve cover self-sealing ring is arranged between the sealing end of the self-sealing valve cover and the valve cover quartering.
The lower end of the stepped valve core is provided with a stepped structure with the area continuously increasing from bottom to top, a flow guiding circular arc is arranged at the stepped structure, and the stepped valve core is further provided with a balance hole.
The outer side of the upper end of the valve core is provided with a plurality of sealing installation grooves, the valve core sealing mechanism is installed in the sealing installation grooves and comprises a sealing ring pre-tightening spring, the inner side of the sealing ring pre-tightening spring is connected with a valve core sealing ring, and the inner side of the valve core sealing ring is cut into an S-shaped notch.
The valve rod sealing mechanism comprises a packing gasket, a protective lower end ring, a high-density lower ring, low-density V-shaped self-sealing packing, a high-density upper ring, a protective upper end ring, a packing pressing sleeve and a packing pressing cover which are sequentially arranged from bottom to top, and the packing pressing cover is connected with the upper end of the self-sealing valve cover through a packing stud matched with a packing nut.
The outer side of the packing stud is positioned between the packing nut and the packing gland and sleeved with a disc spring limiting sleeve, and the outer side of the packing stud is positioned between the disc spring limiting sleeve and the packing gland and sleeved with a disc spring.
Set up pressure testing mechanism in the valve body, pressure testing mechanism includes pressure testing self sealss valve gap and pressure testing quartering, the pressure testing quartering is connected in the valve body, and pressure testing self sealss valve gap is located pressure testing quartering inboard, just set up between pressure testing self sealss valve gap and the pressure testing quartering and be used for sealed pressure testing self-sealing ring, pressure testing quartering and pressure testing self-sealing ring set up the pressure testing self sealss clamp plate that compresses tightly pressure testing self-sealing ring between the self-sealing ring the valve body is located the pressure testing quartering outside and sets up pressure testing valve gap clamp plate, the pressure testing double-screw bolt is connected in the pressure testing self sealss valve gap outside, the pressure testing double-screw bolt passes pressure testing valve gap clamp plate and extends to the pressure testing valve gap clamp plate outside, and the pressure testing double-screw bolt.
The utility model has the advantages as follows:
1) compress tightly four rings through setting up in the valve body upper end and compress tightly clamping ring, labyrinth sleeve and self sealss disk seat in the valve body, make the disk seat become detachable structure, in case the disk seat has the damage, then very light just can dismantle and maintain or change the disk seat for it is more convenient and high-efficient to maintain.
2) The pilot valve core is replaced by the stepped valve core with the self-sealing function, the self-sealing by using a high-pressure medium is realized by the area difference of the stepped part of the stepped valve core, and the stepped valve core is an integral valve core, so that the defects that the pilot valve core is easy to surge, the thrust is high during switching, and dead zones exist in flow regulation are thoroughly overcome;
3) the lower end of the self-sealing valve seat is provided with a U-shaped structure, so that high-speed steam at the outlet of the self-sealing valve seat flows out of a large pipeline through a small flow dividing hole in the side wall of the U-shaped structure, and the flow rate and noise at the steam outlet are reduced;
4) the outer side of the labyrinth sleeve is sleeved with a protective sleeve to prevent high-pressure-difference large-flow media from impacting and damaging the labyrinth sleeve;
5) the static seal at the upper part of the pressing ring adopts a self-sealing C-shaped ring with a self-sealing function, so that the static seal at the position is well ensured, the realization of high leakage grade is ensured, and a disc spring anti-loosening pressing structure is arranged to prevent a pressing quarter ring from loosening, so that the pressing loosening is avoided;
6) the lower end of the stepped valve core is also provided with a flow guiding arc, so that the bottom turbulence phenomenon is avoided when the small flow is adjusted at a small opening degree, the outflow is smoother, and the stability of the adjustment under the small flow is improved;
7) the stepped valve core is provided with a multi-layer valve core sealing mechanism to realize multi-sealing, so that high sealing requirements are realized, the valve core sealing mechanism comprises a sealing ring pre-tightening spring and a valve core sealing ring, and an S-shaped notch is arranged in the valve core sealing ring, so that the sealing ring has the double self-sealing functions of a spring pre-tightening function and medium pressure;
8) the middle low-density V-shaped self-sealing packing, the high-density upper ring and the high-density lower ring and the structural forms for protecting the upper ring and the lower ring ensure that the packing is more reliably sealed, self sealing is generated under high pressure, and the sealing performance of the valve rod is ensured;
9) through the disc spring limiting sleeve, the compression limit of the disc spring is not exceeded when the disc spring is compressed, the service life of the disc spring is prolonged, and the pretightening force of the disc spring is continuously guaranteed.
10) The design is new pressure testing mechanism, through the principle of valve gap self sealss, adopts pressure testing self sealss valve gap and pressure testing quartering pressure tight seal, makes pressure testing mechanism smaller and exquisite and easy installation, and the outside seal when guaranteeing the pressure testing more easily.
Drawings
FIG. 1 is a sectional view of the large-caliber ultra-high pressure difference steam vent valve provided by the present invention.
FIG. 2 is an enlarged view of FIG. 1I.
Fig. 3 is an enlarged view of fig. 1 ii.
FIG. 4 is an enlarged view of FIG. 1 III.
Fig. 5 is a cross-sectional view of a cartridge sealing ring.
FIG. 6 is an enlarged view of FIG. 1 IV.
FIG. 7 is an enlarged view of FIG. 1V.
FIG. 8 is an enlarged view of FIG. 1 VI.
FIG. 9 is a block diagram of the labyrinth sleeve and protective sleeve assembly.
In the figure: 1. a valve body; 2. self-sealing valve seats; 21. the valve seat self-sealing ring; 22. a U-shaped structure; 23. a flow splitting aperture; 24. a steam outlet; 3. a labyrinth sleeve; 31. a protective sleeve; 32. a flow channel; 33. a strip runner channel; 34. a pin hole; 35. positioning pins; 4. pressing a ring; 41. the pressing ring is self-sealed with the C-shaped ring; 5. compressing the four-way ring; 51. c-shaped ring pressing sleeves; 52. an adjusting screw; 53. a disc spring pressing sleeve; 54. arranging a disc loosening prevention spring; 55. a screw pressing plate; 56. tightening the screw; 6. a valve cover pressing plate; 7. a self-sealing valve cover; 71. a valve cover adjusting bolt; 72. a bonnet nut; 73. the valve cover is a self-sealing ring; 74. self-sealing ring pressing plates; 8. a valve cover four-way ring; 9. a stepped valve core; 91. a valve core sealing mechanism; 911. a sealing ring pre-tightening spring; 912. a valve core sealing ring; 913. an S-shaped cut; 92. a valve stem; 93. a valve stem sealing mechanism; 931. a padding liner; 932. protecting the lower end ring; 933. a high-density lower ring; 934. a low density V-shaped self-sealing packing; 935. high-density ring fitting; 936. pressing and sleeving the filler; 937. a packing gland; 938. a packing stud; 939. a packing nut; 9310. a disc spring limit sleeve; 9311. a belleville spring; 9312. a protective upper end ring; 94. a diversion arc; 95. a balance hole; 96. sealing the mounting groove; 10. a pressure testing mechanism; 101. pressure testing and self-sealing of the valve cover; 102. pressure testing is carried out on four rings; 103. a pressure test self-sealing ring; 104. a pressure testing valve cover pressing plate; 105. a pressure test stud; 106. a pressure test adjusting nut; 107. pressure testing self-sealing pressure plate.
Detailed Description
As shown in figure 1, the large-caliber ultrahigh-pressure-difference steam emptying valve of the embodiment comprises a valve body 1, wherein a self-sealing valve seat 2 is arranged in the valve body 1, the self-sealing valve seat 2 is sequentially connected with a labyrinth sleeve 3 and a pressing ring 4, the labyrinth sleeve 3 and the self-sealing valve seat 2 are tightly pressed in the valve body 1 through a pressing quartering 5 connected in the valve body 1, the upper end of the valve body 1 is connected with a bonnet pressing plate 6 through a pressing plate bolt and a pressing plate nut, a self-sealing valve bonnet 7 penetrates through the bonnet pressing plate 6, the sealing end of the self-sealing valve bonnet 7 positioned in the valve body 1 is connected with the bonnet pressing plate 6 through a bonnet adjusting bolt 71 and a bonnet nut 72, a bonnet self-sealing ring 73 is arranged between the sealing end and the valve body 1, a quartering 8 is arranged on the upper side of the sealing end of the self-sealing valve bonnet 7 in the, can ensure the valve cover four-division ring 8 and the self-sealing valve cover 7 to be pressed and sealed, a step valve core 9 is arranged in the pressing ring 4, the labyrinth sleeve 3 and the self-sealing valve seat 2, the lower end of the step valve core 9 is provided with a step structure with the area increasing from bottom to top, poor realization through the area of stair structure utilizes the self sealss of high-pressure medium, and stair structure department sets up water conservancy diversion circular arc 94, balance hole 95 has still been seted up on the ladder case 9, balance hole 95 the actuating mechanism thrust requirement that can significantly reduce, water conservancy diversion circular arc 94 has carried out effectual reposition of redundant personnel to the medium that flows, the turbulent phenomenon prevents to appear, the action stability under the little aperture has been improved, the ladder case 9 outside sets up case sealing mechanism 91, valve rod 92 is connected to ladder case 9 upper end, valve rod 92 passes and extends to the outside in the self sealss valve gap 7, and seal through valve rod sealing mechanism 93 between valve rod 92 and the self sealss valve gap 7.
Seal through disk seat self-sealing ring 21 between self sealss disk seat 2 and the valve body 1, and self sealss disk seat 2 lower extreme sets up U-shaped structure 22, reposition of redundant personnel aperture 23 is seted up to the lateral wall of U-shaped structure 22, all set up steam outlet 24 on the bottom plate of U-shaped structure 22, through reposition of redundant personnel aperture 23, make in the high-speed steam of self sealss disk seat 2 export flows out big pipeline through reposition of redundant personnel aperture 23 on the U-shaped structure 22 lateral wall, the velocity of flow and the noise of steam outlet 24 department have been reduced.
As shown in fig. 2 and 9, a protection sleeve 31 is sleeved outside the labyrinth sleeve 3, a plurality of long-strip runner grooves 33 communicated with runners 32 of the labyrinth sleeve 3 are formed in the protection sleeve, pin holes 34 are formed in the labyrinth sleeve 3 and the protection sleeve 31 in a matching manner, positioning pins 35 penetrate through the pin holes 34, the labyrinth sleeve 3 and the protection sleeve 31 are connected with the pressing ring 4 and the self-sealing valve seat 2 through the positioning pins 35, and the protection sleeve 31 is arranged to prevent high-pressure-difference large-flow media from impacting and damaging the labyrinth sleeve 3;
as shown in FIG. 3, a C-shaped ring pressing sleeve 51 is arranged in front of the pressing quarter ring 5 and the pressing ring 4, the pressing quarter ring 5 is connected with an adjusting screw 52, the lower end of the adjusting screw 52 penetrates through a positioning hole formed in the upper side of the C-shaped ring pressing sleeve 51, a pressing ring self-sealing C-shaped ring 41 for sealing is arranged between the C-shaped ring pressing sleeve 51 and the valve body 1 and the pressing ring 4, a disc spring pressing sleeve 53 is sleeved at the upper end of the adjusting screw 52, a locking disc spring 54 is sleeved between the disc spring pressing sleeve 53 and the pressing quarter ring 5 at the outer side of the adjusting screw 52, a screw pressing plate 55 for inserting and pressing the adjusting screw 52 is arranged at the upper end of the adjusting screw 52 by the disc spring pressing sleeve 53, the screw pressing plate 55 is connected with the adjusting screw 52 through a locking screw 56, the metal pressing ring self-sealing C-shaped ring 41 is adopted to ensure the sealing at the upper end of the pressing ring 4, in, Labyrinth sleeve 3, protective sleeve 31 and self sealss disk seat 2 compress tightly not hard up.
As shown in fig. 4 and 5, two sealing installation grooves 96 are formed in the outer side of the upper end of the valve core 9, two sets of valve core sealing mechanisms 91 are installed in the two sealing installation grooves 96 to realize double-layer sealing, each valve core sealing mechanism 91 comprises a sealing ring pre-tightening spring 911, the inner side of each sealing ring pre-tightening spring 911 is connected with the corresponding sealing installation groove 96, the outer side of each sealing ring pre-tightening spring 911 is connected with a valve core sealing ring 912, an S-shaped cut 913 is formed in the inner side of each valve core sealing ring 912 in a cutting mode, the vertical surface of each S-shaped cut 913 realizes sealing through the elastic.
As shown in fig. 6, the valve rod sealing mechanism 93 includes a packing gasket 931, a protection lower end ring 932, a high-density lower ring 933, a low-density V-shaped self-sealing packing 934, a high-density upper ring 935, a protection upper end ring 9312, a packing pressing sleeve 936 and a packing gland 937, the packing gland 937 is connected with the upper end of the self-sealing valve cover 7 through a packing stud 938 and a packing nut 939, the low-density V-shaped self-sealing packing 934, the high-density upper ring 935 is graphite packing, through the valve rod sealing mechanism 93, the packing sealing of the valve rod sealing mechanism 93 is more reliable, self-sealing is generated under high pressure, and the sealing performance of the valve rod 92 is ensured.
As shown in fig. 7, a disc spring limiting sleeve 9310 is sleeved on a position, which is located between the packing nut 939 and the packing gland 937, outside the packing stud 938, and a disc spring 9311 is sleeved on a position, which is located between the disc spring limiting sleeve 9310 and the packing gland 937, outside the packing stud 938, and through the disc spring limiting sleeve 9310, it is ensured that the compression limit of the disc spring 9311 is not exceeded when the disc spring 9311 compresses, the service life of the disc spring 9311 is protected, and the pretightening force of the disc spring 9311 is continuously ensured.
As shown in fig. 8, a pressure testing mechanism 10 is arranged in a valve body 1, the pressure testing mechanism 10 comprises a pressure testing self-sealing valve cover 101 and a pressure testing quarter ring 102, the pressure testing quarter ring 102 is connected in the valve body 1, the pressure testing self-sealing valve cover 101 is positioned at the inner side of the pressure testing quarter ring 102, a pressure testing self-sealing ring 103 for sealing is arranged between the pressure testing self-sealing valve cover 101 and the pressure testing quarter ring 102, a pressure testing self-sealing pressure plate 107 for pressing the pressure testing self-sealing ring 103 is arranged between the pressure testing quarter ring 102 and the pressure testing self-sealing ring 103, a pressure testing valve cover pressure plate 104 is arranged at the outer side of the pressure testing quarter ring 102 of the valve body 1, a pressure testing stud 105 is connected at the outer side of the pressure testing self-sealing valve cover 101, the pressure testing stud 105 passes through the pressure testing valve cover pressure plate 104 and extends to the outer side of the pressure testing valve cover pressure plate 104, the pressure testing stud 105 is, the pressure testing mechanism 10 is made smaller and easier to install, and the external seal during pressure testing is easier to ensure.
When the large-caliber ultrahigh-pressure-difference steam emptying valve is used, a large-flow high-pressure-difference medium enters a flow channel 32 of a labyrinth sleeve 3 through a long-strip flow channel groove 33 of a protective sleeve 31 through an inlet on the left side, then enters a self-sealing valve seat 2 through a flow guide circular arc 94 at the bottom of a stepped valve core, is discharged through a flow distribution small hole 23 and a steam outlet 24 which are formed in a U-shaped structure 22 of the self-sealing valve seat 2, finally is discharged from an outlet at the lower end of a valve body 1, and further flows to the atmosphere for emptying regulation, when the large-caliber ultrahigh-pressure-difference steam emptying valve carries out pressure testing, a pressure testing self-sealing valve cover 101 is firstly placed in an inlet on the left side of the valve body 1, then a pressure testing quarter ring 102 is clamped on the side wall of the inlet on the left side of the valve body 1, a pressure testing valve cover pressing plate 104 is prevented from being arranged on, and a pressure test adjusting nut 106 is sleeved on the pressure test stud 105, the pressure test self-sealing valve cover 101 can be driven to move outwards by rotating the pressure test adjusting nut 106, finally the pressure test self-sealing valve cover 101 and the pressure test quarter ring 102 are pressed tightly to realize sealing, and after sealing is finished, the pressure test self-sealing valve cover 101 can be connected with a pipeline to carry out pressure test operation.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.
Claims (10)
1. Heavy-calibre superhigh pressure difference steam atmospheric valve, including valve body (1), set up self sealss disk seat (2), its characterized in that in valve body (1): the labyrinth sleeve (3) and the clamping ring (4) are sequentially connected on the self-sealing valve seat (2), the clamping ring (4), the labyrinth sleeve (3) and the self-sealing valve seat (2) are tightly pressed in the valve body (1) through a pressing quartering (5) connected in the valve body (1), the upper end of the valve body (1) is connected with a valve cover pressing plate (6), a self-sealing valve cover (7) is penetrated in the valve cover pressing plate (6), the sealing end of the self-sealing valve cover (7) positioned in the valve body (1) is matched with a valve cover nut (72) through a valve cover adjusting bolt (71) to be connected with the valve cover pressing plate (6), a valve cover self-sealing ring (73) is arranged between the sealing end and the valve body (1), a valve cover quartering (8) is arranged on the upper side of the sealing end of the self-sealing valve cover (7) positioned in the valve body (1), a stepped valve core (, the outer side of the stepped valve core (9) is provided with a valve core sealing mechanism (91), the upper end of the stepped valve core (9) is connected with a valve rod (92), the valve rod (92) penetrates through the self-sealing valve cover (7) to extend to the outer side, and the valve rod (92) and the self-sealing valve cover (7) are sealed through a valve rod sealing mechanism (93).
2. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: the self-sealing valve seat is characterized in that the self-sealing valve seat (2) and the valve body (1) are sealed through a valve seat self-sealing ring (21), a U-shaped structure (22) is arranged at the lower end of the self-sealing valve seat (2), a shunt small hole (23) is formed in the side wall of the U-shaped structure (22), and a steam outlet (24) is formed in the bottom plate of the U-shaped structure (22).
3. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: protective sleeve (31) are established to labyrinth sleeve (3) outside cover, set up on protective sleeve (31) a plurality of rectangular runner grooves (33) that communicate with runner (32) of labyrinth sleeve (3), pinhole (34) are seted up in labyrinth sleeve (3) and protective sleeve (31) cooperation, locating pin (35) have been worn in pinhole (34), labyrinth sleeve (3) and protective sleeve (31) are connected with clamping ring (4) and self sealss disk seat (2) through locating pin (35).
4. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: a C-shaped ring pressing sleeve (51) is arranged in front of the pressing quarter ring (5) and the pressing ring (4), the pressing quarter ring (5) is connected with an adjusting screw (52), the lower end of the adjusting screw (52) penetrates through a positioning hole formed in the upper side of the C-shaped ring pressing sleeve (51), a pressing ring self-sealing C-shaped ring (41) for sealing is arranged between the C-shaped ring pressing sleeve (51) and the valve body (1) and the pressing ring (4), the upper end of the adjusting screw (52) is sleeved with a disc spring pressing sleeve (53), the outer side of the adjusting screw (52) is positioned between the disc spring pressing sleeve (53) and the pressing quarter ring (5) and sleeved with a locking disc spring (54), the disc spring pressing sleeve (53) is positioned at the upper end of the adjusting screw (52) and is inserted into a screw pressing plate (55) pressing the adjusting screw (52), the screw pressure plate (55) is connected with the adjusting screw (52) through a set screw (56).
5. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: and a self-sealing ring pressing plate (74) for pressing the valve cover self-sealing ring (73) is arranged between the sealing end of the self-sealing valve cover (7) and the valve cover quarter ring (8).
6. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: the lower end of the stepped valve core (9) is provided with a stepped structure with the area increasing from bottom to top, a flow guiding circular arc (94) is arranged at the stepped structure, and the stepped valve core (9) is further provided with a balance hole (95).
7. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: a plurality of sealing installation grooves (96) are formed in the outer side of the upper end of the stepped valve core (9), the valve core sealing mechanism (91) is installed in the sealing installation grooves (96), the valve core sealing mechanism (91) comprises a sealing ring pre-tightening spring (911) the inner side of which is connected with the sealing installation grooves (96), the outer side of the sealing ring pre-tightening spring (911) is connected with a valve core sealing ring (912), and an S-shaped notch (913) is formed in the inner side of the valve core sealing ring (912).
8. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: valve rod sealing mechanism (93) include by packing liner (931), protection end ring (932), high density lower ring (933) that supreme setting gradually down, low density V-arrangement self sealss packing (934), high density upper ring (935), protection upper end ring (9312), packing pressure cover (936) and gland (937), gland (937) are connected with self sealss valve gap (7) upper end through packing double-screw bolt (938) cooperation packing nut (939).
9. The large-caliber ultra-high pressure differential steam vent valve of claim 8, wherein: the outer side of the packing stud (938) is positioned between the packing nut (939) and the packing gland (937) and sleeved with a disc spring limiting sleeve (9310), and the outer side of the packing stud (938) is positioned between the disc spring limiting sleeve (9310) and the packing gland (937) and sleeved with a disc spring (9311).
10. The large-caliber ultra-high pressure differential steam vent valve of claim 1, wherein: the pressure testing valve is characterized in that a pressure testing mechanism (10) is arranged in the valve body (1), the pressure testing mechanism (10) comprises a pressure testing self-sealing valve cover (101) and a pressure testing quarter ring (102), the pressure testing quarter ring (102) is connected in the valve body (1), the pressure testing self-sealing valve cover (101) is located on the inner side of the pressure testing quarter ring (102), a pressure testing self-sealing ring (103) for sealing is arranged between the pressure testing self-sealing valve cover (101) and the pressure testing quarter ring (102), a pressure testing self-sealing pressure plate (107) for pressing the pressure testing self-sealing ring (103) is arranged between the pressure testing quarter ring (102) and the pressure testing self-sealing ring (103), the valve body (1) is located on the outer side of the pressure testing quarter ring (102) and is provided with a pressure testing valve cover pressure plate (104), the pressure testing self-sealing valve cover (101) is connected with a pressure testing stud (105), and the pressure testing stud (105) passes through the pressure testing valve cover pressure, and the pressure test stud (105) is positioned on the outer side of the pressure test valve cover pressing plate (104) and is connected with a pressure test adjusting nut (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921293339.XU CN210716010U (en) | 2019-08-09 | 2019-08-09 | Large-diameter ultrahigh-pressure-difference steam emptying valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921293339.XU CN210716010U (en) | 2019-08-09 | 2019-08-09 | Large-diameter ultrahigh-pressure-difference steam emptying valve |
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| Publication Number | Publication Date |
|---|---|
| CN210716010U true CN210716010U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921293339.XU Active CN210716010U (en) | 2019-08-09 | 2019-08-09 | Large-diameter ultrahigh-pressure-difference steam emptying valve |
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| CN (1) | CN210716010U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253866A (en) * | 2020-11-04 | 2021-01-22 | 克里特集团有限公司 | Valve pressure test structure and installation method thereof |
| CN113404461A (en) * | 2021-07-06 | 2021-09-17 | 成都百胜野牛科技有限公司 | Inner core protection structure of intelligent flow regulator of natural gas well |
-
2019
- 2019-08-09 CN CN201921293339.XU patent/CN210716010U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253866A (en) * | 2020-11-04 | 2021-01-22 | 克里特集团有限公司 | Valve pressure test structure and installation method thereof |
| CN113404461A (en) * | 2021-07-06 | 2021-09-17 | 成都百胜野牛科技有限公司 | Inner core protection structure of intelligent flow regulator of natural gas well |
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