CN107152560B

CN107152560B - Water-cooled high-temperature forged steel valve

Info

Publication number: CN107152560B
Application number: CN201710542898.9A
Authority: CN
Inventors: 吴尖斌; 钱勇; 胡家勇; 谢其涵; 王飞; 郑浩林
Original assignee: Anhui Tunxi High Pressure Valve Co ltd
Current assignee: Anhui Tunxi High Pressure Valve Co ltd
Priority date: 2017-07-05
Filing date: 2017-07-05
Publication date: 2023-05-16
Anticipated expiration: 2037-07-05
Also published as: CN107152560A

Abstract

The invention discloses a water-cooled high-temperature forged steel valve, which comprises a valve body, an elongated valve cover, a valve rod, a support and an annular handle, wherein the top of the valve body is tightly connected with the elongated valve cover through bolts, the top of the elongated valve cover is provided with the support, the top of the support is connected with the annular handle, the elongated valve cover is of an integral structure with a thin upper part and a thick lower part, a cooling device is fixedly sleeved on the outer wall of the elongated valve cover, a packing layer is arranged in a packing box at the top of the elongated valve cover, an automatic compensation device is arranged at the top of the packing layer, the top of the automatic compensation device is provided with a packing gland, the automatic compensation device and the packing gland are sleeved on the valve rod, and the other end of the packing gland corresponding to the valve rod and the bottom of the support form a secondary compensation system; the invention can effectively cool the equipment, effectively avoid overheat of the filler, realize the purpose of automatic compensation of the filler and improve the tightness of the equipment.

Description

Water-cooled high-temperature forged steel valve

Technical Field

The invention relates to the technical field of valve equipment, in particular to a water-cooled high-temperature forging steel valve.

Background

At present, the lengthened valve cover of the existing high-temperature valve adopts three connection modes of socket welding of a connecting pipe and a valve cover, threaded connection of the connecting pipe and the valve cover and butt welding of the connecting pipe. When the connecting pipe and the valve cover are connected by socket welding or threads, the excircle of the connecting pipe is required to be enlarged to ensure the welding thickness, so that the manufacturing cost is increased. When the connecting pipe and the valve cover are connected by butt welding, the welding thickness is unchanged, but the processing technology is complex. The welding stress and the weld quality problem exist in all three connecting modes, hidden danger is brought for safety, secondly, the cooling measures are lacked, the high-temperature valve is always in a high-temperature state during working, the lack of the cooling measures can only singly protect the filler through the heightened valve cover, the effect is not ideal, the filler stress relaxation phenomenon is serious, the stability of sealing work is poor, the existing high-temperature valve filler sealing structure is poor, the pretightening force applied to the filler by the movable joint bolt is constant, the compression deformation of the filler is slightly reduced due to abrasion, the stress relaxation of the filler is aggravated, the stability and the reliability of sealing work are reduced, the equipment automatic compensation capability is poor, the clearance between the filler and the inner walls of the valve rod and the filler chamber is increased after the filler is abraded, and the filler sealing structure of the traditional high-temperature valve has no capability of automatically compensating the compressing force, and the leakage quantity is increased along with the increase of the clearance.

Therefore, how to improve the defects of the prior art is an urgent problem to be solved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a water-cooled high-temperature forged steel valve, so as to solve the technical problems of lack of cooling measures, poor sealing stability and poor automatic compensation capability in the prior art.

The invention is realized by the following technical scheme:

the invention provides a water-cooled high-temperature forged steel valve which comprises a valve body, a lengthened valve cover, a valve rod, a support and an annular handle, wherein the top of the valve body is tightly connected with the lengthened valve cover through bolts, the support is arranged at the top of the lengthened valve cover, the annular handle is connected to the top of the support, the bottom end of the valve rod is fixedly connected with a valve ball in the valve body, the other end of the valve rod sequentially penetrates through the lengthened valve cover and the support and is fixedly connected with the annular handle, the lengthened valve cover is of an integral structure with a thin upper part and a thick lower part, a cooling device is fixedly sleeved on the outer wall of the lengthened valve cover, a packing layer is arranged in a packing box at the top of the lengthened valve cover, an automatic compensation device is arranged at the top of the packing layer, a packing gland is arranged at the top of the automatic compensation device, the automatic compensation device and the packing gland are sleeved on the valve rod, and a secondary compensation system is formed by the other end of the packing gland corresponding to the valve rod and the bottom of the support.

Further, the cooling device specifically comprises two half cooling water tanks, two half cooling water tanks are fixedly installed on the outer wall of the lengthened valve cover through positioning grooves on the lengthened valve cover respectively, two half cooling water tanks are fixedly connected through welding, and a water inlet and a water outlet are formed in the upper portion and the lower portion of each half cooling water tank respectively.

Further, the automatic compensation device comprises a spring fixing ring, a spring seat and a spring, wherein the spring fixing ring is arranged at the top of the spring seat, through holes corresponding to the spring are uniformly formed in the spring fixing ring, the spring is arranged in the through holes, the top end of the spring tightly abuts against the bottom of the packing gland, the bottom end of the spring tightly abuts against the top of the spring fixing ring, and the spring seat is arranged at the top of the packing layer.

Further, the secondary compensation system specifically comprises a packing gland, a support and an articulated bolt, wherein the articulated bolt is movably arranged on the outer wall of the bottom of the support, the other end of the articulated bolt vertically penetrates through one end of the packing gland corresponding to the valve rod and then is tightly connected with an articulated nut, a belleville spring gasket is sleeved on the articulated bolt between the articulated nut and the packing gland, the top end of the belleville spring gasket tightly abuts against the bottom of the articulated nut, and the bottom end of the belleville spring gasket tightly abuts against the top of the packing gland.

Further, the lengthened valve cover is connected with the support in a threaded connection mode.

Further, the lengthened valve cover, the valve rod, the bracket, the annular handle and the automatic compensation device are coaxially distributed.

Compared with the prior art, the invention has the following advantages: the invention provides a water-cooled high-temperature forging steel valve, which is characterized in that a cooling device is arranged on the outer wall of a lengthened valve cover, so that the lengthened valve cover is effectively cooled, meanwhile, overheat of a packing layer in a packing box is effectively avoided, the service life of the packing layer is prolonged, the cooling device is composed of two semi-cooling water tanks, the convenience of installation is improved, an automatic compensation device is additionally arranged on the packing layer, downward force can be effectively applied to the packing layer through mutual matching among a spring fixing ring, a spring seat and a spring, the packing layer can automatically supplement gaps caused by abrasion, the purpose of packing automatic compensation is realized, and a disc spring gasket in a secondary compensation system is combined to apply downward force to the packing gland and finally conduct the downward force to the packing layer, so that the purpose of secondary compensation of packing is realized, and the sealing property of equipment is effectively improved.

Drawings

FIG. 1 is a schematic view of the structure of the water-cooled high temperature forging steel valve of the present invention;

FIG. 2 is an enlarged view of a portion of the water-cooled high temperature wrought steel valve of the present invention;

fig. 3 is a top view of the water cooled high temperature wrought steel valve spring retainer of the present invention.

In the figure: 1. a valve body; 2. lengthening the valve cover; 3. a valve stem; 4. a bracket; 5. an annular handle; 6. a cooling device; 7. a filler layer; 8. an automatic compensation device; 9. a packing gland; 10. a semi-cooling water tank; 11. a water inlet; 12. a water outlet; 13. a spring retainer ring; 14. a spring seat; 15. a spring; 16. a through hole; 17. a swing bolt; 18. a swing nut; 19. disc spring washers.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-3, an embodiment of the present invention is provided: a water-cooled high-temperature forged steel valve comprises a valve body 1, a lengthened valve cover 2, a valve rod 3, a support 4 and an annular handle 5, wherein the top of the valve body 1 is tightly connected with the lengthened valve cover 2 through bolts, the support 4 is arranged at the top of the lengthened valve cover 2, the annular handle 5 is connected at the top of the support 4, the bottom end of the valve rod 3 is fixedly connected with a valve ball in the valve body 1, the other end of the valve rod passes through the lengthened valve cover 2 and the support 4 in sequence and then is fixedly connected with the annular handle 5, the lengthened valve cover 2 is of an integral structure with a thin upper part and a thick lower part, a cooling device 6 is fixedly sleeved on the outer wall of the lengthened valve cover 2, a packing layer 7 is arranged in a packing box at the top of the lengthened valve cover 2, an automatic compensating device 8 is arranged at the top of the packing layer 7, a packing gland 9 is arranged at the top of the automatic compensating device 8, the automatic compensating device 8 and the packing gland 9 are sleeved on the valve rod 3, the other end of the packing gland 9 corresponding to the valve rod 3 and the bottom of the bracket 4 form a secondary compensation system, the cooling device 6 is specifically composed of two half cooling water tanks 10, the two half cooling water tanks 10 are fixedly installed on the outer wall of the lengthened valve cover 2 through positioning grooves on the lengthened valve cover 2 respectively, the two half cooling water tanks 10 are fixedly connected through welding, a water inlet 11 and a water outlet 12 are respectively arranged on the upper side and the lower side of the two half cooling water tanks 10, the automatic compensation device 8 comprises a spring fixing ring 13, a spring seat 14 and a spring 15, the spring fixing ring 13 is arranged at the top of the spring seat 14, through holes 16 corresponding to the spring 15 are uniformly formed in the spring fixing ring 13, the spring 15 is arranged in the through holes 16, the top end of the spring 15 tightly abuts against the bottom of the packing gland 9, the bottom end of the spring 15 tightly abuts against the top of the spring fixing ring 13, the spring seat 14 is arranged at the top of the packing layer 7, and the secondary compensation system is specifically composed of the packing gland 9, the support 4 and the movable bolt 17 form, movable mounting has movable bolt 17 on the outer wall of support 4 bottom, the other end of movable bolt 17 vertically passes behind the one end that packing gland 9 corresponds with valve rod 3 with movable nut 18 zonulae occludens, the cover is equipped with belleville spring gasket 19 on the movable bolt 17 between movable nut 18 and the packing gland 9, the top of belleville spring gasket 19 tightly pushes up the bottom of movable nut 18, and the bottom of belleville spring gasket 19 tightly pushes up the top of packing gland 9, connect through threaded connection between extension valve gap 2 and the support 4, extension valve gap 2, valve rod 3, support 4, annular handle 5 and automatic compensating device 8 coaxial distribution.

The working principle is that the valve rod 3 can be driven to rotate by rotating the annular handle 5 during operation, then the valve ball in the valve body 1 is driven to rotate, finally the effective opening and closing of the equipment are realized, the strength of the equipment is effectively improved due to the integral structure of the lengthened valve cover 2, the heat dissipation effect is improved by lengthening the valve cover, the defect of connection through welding can be effectively avoided by adopting a threaded connection mode between the lengthened valve cover 2 and the bracket 4, the manufacturing cost is reduced, the safety of the equipment is improved, when the heat in the valve body 1 is conducted to the lengthened valve cover 2, the cooling device 6 fixedly sleeved on the valve body of the lengthened valve cover 2 can effectively cool the lengthened valve cover 2, the convenience of installation is improved due to the fact that the cooling device 6 is formed by two semi-cooling water tanks 10, the cooling water enters from the water inlet 11 of one semi-cooling water tank 10, after the cooling device 6 circularly flows, the water flows out from the water outlet 12 of the other semi-cooling water tank 10, so that the cooling water can be effectively circulated, the lengthened valve cover 2 can be effectively cooled, meanwhile, the overheat of the packing layer 7 in the packing box at the top of the lengthened valve cover 2 can be effectively avoided, the service life of the packing layer 7 is prolonged, when the packing layer 7 generates gaps between the outer wall of the valve rod 3 and the inner wall of the packing box due to long-time operation of equipment, the spring 15 in the automatic compensation device 8 at the top of the packing layer 7 can apply downward force to the spring seat 14 and finally conduct to the packing layer 7, the packing in the packing layer 7 supplements the generated gaps, the purpose of automatic compensation is realized, the leakage rate of the equipment is reduced, the through holes 16 on the spring fixing ring 13 can effectively limit the spring 15, and the through holes 16 are a plurality of and are uniformly distributed on the spring fixing ring 13, the stress balance of the spring seat 14 is further realized, the purpose of compensating the gap balance of the packing layer 7 is achieved, the packing gland 9 and the support 4 can be effectively connected through the mutual matching between the movable joint bolt 17 and the movable joint nut 18 in the secondary compensation system, the effective limit and fixation of the packing gland 9 are realized, when the packing in the packing layer 7 is in abrasion loss, the disc spring gasket 19 arranged between the movable joint nut 18 and the packing gland 9 can apply downward force to the packing gland 9 and is conducted to the packing layer 7 through the automatic compensation device 8, so that the packing layer 7 can automatically supplement the gap caused by abrasion, the secondary compensation of the packing layer 7 is realized, and the leakage rate of equipment is reduced again.

Claims

1. The utility model provides a water-cooled high temperature forging steel valve, includes valve body (1), extension valve gap (2), valve rod (3), support (4) and annular handle (5), the top of valve body (1) passes through bolt and extension valve gap (2) zonulae occludens, the top of extension valve gap (2) is provided with support (4), the top of support (4) is connected with annular handle (5), the bottom of valve rod (3) is fixed with the valve ball in valve body (1), and the other end passes extension valve gap (2) and support (4) in proper order after with annular handle (5) fixed connection, characterized in that, extension valve gap (2) is the integrative structure of upper and lower thick cylinder, fixed cover is equipped with cooling device (6) on extension valve gap (2) outer wall, be provided with packing layer (7) in the packing box at extension valve gap (2) top, the top of packing layer (7) is provided with automatic compensating device (8), the top of automatic compensating device (8) is provided with packing (9), automatic compensating device (8) and packing (9) are all set up on valve rod (3) and the corresponding system of second time bottom (4) of valve rod (3);

the cooling device (6) is specifically composed of two semi-cooling water tanks (10), the two semi-cooling water tanks (10) are fixedly arranged on the outer wall of the lengthened valve cover (2) through positioning grooves on the lengthened valve cover (2), the two semi-cooling water tanks (10) are fixedly connected through welding, and a water inlet (11) and a water outlet (12) are respectively arranged on the upper part and the lower part of the two semi-cooling water tanks (10);

the automatic compensation device (8) comprises a spring fixing ring (13), a spring seat (14) and a spring (15), wherein the spring fixing ring (13) is arranged at the top of the spring seat (14), through holes (16) corresponding to the spring (15) are uniformly formed in the spring fixing ring (13), the spring (15) is arranged in the through holes (16), the top end of the spring (15) tightly abuts against the bottom of the packing gland (9), the bottom end of the spring (15) tightly abuts against the top of the spring fixing ring (13), and the spring seat (14) is arranged at the top of the packing layer (7);

the secondary compensation system specifically comprises a packing gland (9), a support (4) and an articulated bolt (17), wherein the articulated bolt (17) is movably mounted on the outer wall of the bottom of the support (4), the other end of the articulated bolt (17) vertically penetrates through one end of the packing gland (9) corresponding to the valve rod (3) and then is tightly connected with an articulated nut (18), a belleville spring gasket (19) is sleeved on the articulated bolt (17) between the articulated nut (18) and the packing gland (9), the top end of the belleville spring gasket (19) tightly abuts against the bottom of the articulated nut (18), and the bottom end of the belleville spring gasket (19) tightly abuts against the top of the packing gland (9).

2. A water-cooled high temperature forged steel valve according to claim 1, wherein the lengthened valve cover (2) and the bracket (4) are connected in a threaded connection manner.

3. The water-cooled high-temperature forged steel valve according to claim 1, wherein the lengthened valve cover (2), the valve rod (3), the bracket (4), the annular handle (5) and the automatic compensation device (8) are coaxially distributed.