CN214197375U

CN214197375U - High-temperature-resistant leak-proof forged steel ball valve

Info

Publication number: CN214197375U
Application number: CN202120121176.8U
Authority: CN
Inventors: 余金贤; 李璋喜; 叶云
Original assignee: Yonglong Valve Co ltd
Current assignee: Yonglong Valve Co ltd
Priority date: 2021-01-15
Filing date: 2021-01-15
Publication date: 2021-09-14
Anticipated expiration: 2031-01-15

Abstract

The utility model discloses a high temperature resistant and leak-proof forged steel ball valve, which comprises a valve body, a valve rod seat, a ball core and a valve seat, wherein a flow passage is arranged in the valve body, the valve rod penetrates through the valve rod seat and extends into the flow passage in the valve body to be linked with the ball core, and the valve seat is arranged in the flow passage and is used for forming sealing fit with the ball core; be equipped with consecutive first ring channel, second ring channel and third ring channel in the runner, and the diameter of first ring channel, second ring channel and third ring channel reduces in proper order, the disk seat slides and sets up in first ring channel, the one side of keeping away from the ball core on the disk seat is equipped with the bellows, the bellows sets up in the second ring channel, the one end that the disk seat was kept away from to the bellows is equipped with the support border, be equipped with the clamping ring in the third ring channel, the clamping ring passes through locking screw to be fixed in the third ring channel, and support border clamping between third ring channel and clamping ring. The utility model has the advantages of sealing performance and security performance are reliable, be fit for using under the high temperature medium operating mode.

Description

High-temperature-resistant leak-proof forged steel ball valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a high temperature resistant prevents leaking forged steel ball valve.

Background

Due to the good circulation of the ball valve and the fast switching speed, the ball valve is applied to pipeline systems of high-temperature media more and more. Generally, under the condition of a medium at the temperature of less than or equal to 200 ℃, the ball valve usually adopts a soft sealing mode, namely an O-shaped sealing ring is adopted to realize the sealing between a valve seat and a ball core, the sealing performance is good, and the elastic compensation is reliable; however, under the working condition of high-temperature medium at more than 200 ℃, the temperature resistance of the O-shaped sealing ring can not meet the requirement, and the O-shaped sealing ring can only be forcibly sealed by adopting a hard sealing mode and arranging a metal ring on the valve seat. The metal ring has no problem at normal temperature, and once the metal ring is in a high-temperature state or changes alternately at high and low temperatures, the friction force between the metal ring and the ball core is easily increased due to the characteristic of thermal expansion of the material, and the abrasion of the surfaces of the metal ring and the ball core is accelerated, so that a large gap is easily generated between the metal ring and the ball core when the temperature is reduced, the medium is leaked, and the production safety is influenced. Therefore, there is a need in the market for a high temperature resistant and leak proof forged steel ball valve to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant prevents leaking forged steel ball valve, the utility model has the advantages of sealing performance and security performance are reliable, be fit for using under the high temperature medium operating mode.

In order to achieve the above object, the utility model provides a following technical scheme: the high-temperature-resistant and leak-proof forged steel ball valve comprises a valve body, a valve rod seat, a ball core and a valve seat, wherein a flow channel is arranged in the valve body, the valve rod penetrates through the valve rod seat and extends into the flow channel in the valve body to be in linkage connection with the ball core, and the valve seat is arranged in the flow channel and is used for forming sealing fit with the ball core; the ball valve is characterized in that a first annular groove, a second annular groove and a third annular groove which are connected in sequence are arranged in the flow channel, the diameters of the first annular groove, the second annular groove and the third annular groove are reduced in sequence, the valve seat is arranged in the first annular groove in a sliding mode, a corrugated pipe is arranged on one side, away from the ball core, of the valve seat and arranged in the second annular groove, a supporting edge is arranged at one end, away from the valve seat, of the corrugated pipe, a pressing ring is arranged in the third annular groove and fixed in the third annular groove through a locking screw, and the supporting edge is clamped between the third annular groove and the pressing ring.

Through adopting above-mentioned technical scheme, when the condition of disk seat expend with heat and contract with cold took place, the bellows can provide elastic compensation for the disk seat, makes it hug closely the ball core surface all the time, indulges the disk seat surface and takes place wearing and tearing, also can not produce great clearance between disk seat and the ball core to avoid the medium leakage, it has the advantage that sealing performance and security performance are reliable, is fit for using under the high temperature medium operating mode. Simultaneously, utilize the clamping ring to fix the support border of bellows, the dismouting is very convenient, and fixed effectual, does benefit to the later maintenance and changes.

The utility model discloses further set up to, press from both sides between clamping ring and the third ring channel and be equipped with the spring washer, the thickness of spring washer with the thickness at support border equals.

Through adopting above-mentioned technical scheme, the elasticity packing ring can play the pretension effect to locking screw, simultaneously, also can provide displacement compensation for the clamping ring to improve the clamping ring and support the firm effect of pressure at border to the bellows.

The utility model discloses further set up to, the periphery of clamping ring evenly is provided with the multiunit along the axial and acts on support the location bulge loop at border.

Through adopting above-mentioned technical scheme, location bulge loop on the clamping ring supports on supporting the border, can further promote the fixed effect of supporting the border.

The utility model discloses further set up to, set up the circular slot that supplies locking screw's nut to sink into on the inner wall of clamping ring, be equipped with the manger plate pad in the circular slot, the interior terminal surface of manger plate pad is inconsistent with locking screw's nut terminal surface, and the periphery of manger plate pad is equipped with the toper convex part, be equipped with on the inner wall of circular slot with the toper concave part that the toper convex part agrees with mutually.

Through adopting above-mentioned technical scheme, can play water protection's effect to locking screw, avoid locking screw to rust.

The utility model discloses further set up to, be equipped with the extension that the orientation is close to the ball core direction and extends on the clamping ring, the outer wall of extension with the inner wall of bellows is laminated mutually.

Through adopting above-mentioned technical scheme, can promote the stability of bellows activity to can avoid it to produce radial deformation.

The utility model discloses further set up to, the disk seat is gone up the car and is had the installation inclined plane, be equipped with the sealing washer on the installation inclined plane, be equipped with reference column and holding ring along circumference on the sealing washer, be equipped with on the installation inclined plane with the locating hole that the reference column agrees with mutually and with the annular positioning groove that the holding ring agrees with mutually.

Through adopting above-mentioned technical scheme, can further promote the leakproofness between disk seat and the ball core, it is very convenient to change the sealing washer simultaneously.

The utility model discloses further set up to, seted up the spring groove on the interior terminal surface of first ring channel, the spring inslot is equipped with compression spring, and compression spring's one end is supported on the interior terminal surface in spring groove, and compression spring's the other end supports on the terminal surface of disk seat.

Through adopting above-mentioned technical scheme, compression spring provides secondary elastic compensation for the disk seat, can further promote sealing performance and the security performance between disk seat and the ball core.

The utility model discloses further set up to, be equipped with the spacing groove on the terminal surface of disk seat, the spacing groove is outer big-end-up's frustum shape, compression spring inlays near the one end of ball core and establishes in the spacing groove.

Through adopting above-mentioned technical scheme, can improve the steadiness of compression spring installation.

The utility model discloses further set up to, the disk seat is as an organic whole with the bellows.

Through adopting above-mentioned technical scheme, can promote the bulk strength of disk seat and bellows, and then promote the life of disk seat and bellows.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. a valve body; 2. a valve stem; 3. a valve stem seat; 4. a ball core; 5. a valve seat; 6. a flow channel; 7. a first annular groove; 8. a second annular groove; 9. a third annular groove; 10. a bellows; 11. a support rim; 12. pressing a ring; 13. locking the screw; 14. an elastic washer; 15. positioning the convex ring; 16. a circular groove; 17. a tapered convex portion; 18. a tapered recess; 19. an extension portion; 20. installing an inclined plane; 21. a seal ring; 22. a positioning column; 23. a positioning ring; 24. positioning holes; 25. an annular positioning groove; 26. a spring slot; 27. a compression spring; 28. a limiting groove; 29. a water-retaining cushion.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): the high-temperature-resistant and leak-proof forged steel ball valve shown in the attached drawings 1-2 comprises a valve body 1, a valve rod 2, a valve rod seat 3, a ball core 4 and a valve seat 5, wherein a flow passage 6 is arranged in the valve body 1, the valve rod 2 penetrates through the valve rod seat 3 and extends into the flow passage 6 in the valve body 1 to be in linkage connection with the ball core 4, and the valve seat 5 is arranged in the flow passage 6 and is used for forming sealing fit with the ball core 4; the ball valve is characterized in that a first annular groove 7, a second annular groove 8 and a third annular groove 9 which are connected in sequence are arranged in the flow channel 6, the diameters of the first annular groove 7, the second annular groove 8 and the third annular groove 9 are reduced in sequence, a step is formed between every two adjacent annular grooves, the valve seat 5 is arranged in the first annular groove 7 in a sliding mode, a corrugated pipe 10 (made of metal materials) is arranged on one side, away from the ball core 4, of the valve seat 5, the corrugated pipe 10 is arranged in the second annular groove 8, a supporting edge 11 is arranged at one end, away from the valve seat 5, of the corrugated pipe 10, a pressing ring 12 is arranged in the third annular groove 9, the pressing ring 12 is fixed in the third annular groove 9 through a locking screw 13, and the supporting edge 11 is clamped between the third annular groove 9 and the pressing ring 12. When the condition of expansion with heat and contraction with cold of the valve seat 5 occurs, the corrugated pipe 10 can provide elastic compensation for the valve seat 5, so that the valve seat 5 is always tightly attached to the surface of the ball core 4, and even if the surface of the valve seat 5 is abraded, a larger gap can not be generated between the valve seat 5 and the ball core 4, thereby avoiding medium leakage.

As shown in fig. 2, an elastic gasket 14 is interposed between the pressing ring 12 and the third annular groove 9, the elastic gasket 14 may be made of rubber, and the thickness of the elastic gasket 14 is equal to that of the supporting rim 11. The elastic washer 14 can pre-tighten the locking screw 13, and can also provide displacement compensation for the pressing ring 12, so that the pressing effect of the pressing ring 12 on the supporting edge 11 of the corrugated pipe 10 is improved.

As shown in fig. 2, a plurality of sets of positioning convex rings 15 acting on the supporting edge 11 are uniformly arranged on the periphery of the pressing ring 12 along the axial direction, and the positioning convex rings 15 and the supporting edge 11 are integrated. The positioning convex ring 15 on the pressing ring 12 is abutted against the supporting edge 11, so that the fixing effect of the supporting edge 11 can be further improved.

As shown in fig. 2, a circular groove 16 into which a nut of the locking screw 13 is sunk is formed in the inner wall of the pressing ring 12, a water blocking pad 29 is arranged in the circular groove 16, the inner end surface of the water blocking pad 29 is in contact with the nut end surface of the locking screw 13, a conical convex portion 17 is arranged on the periphery of the water blocking pad 29, and a conical concave portion 18 matched with the conical convex portion 17 is formed on the inner wall of the circular groove 16. This design can play water protection's effect to locking screw 13, avoids locking screw 13 to rust.

As shown in fig. 2, the pressing ring 12 is provided with an extending portion 19 extending toward the direction close to the ball core 4, and an outer wall of the extending portion 19 is attached to an inner wall of the corrugated tube 10. This design can improve the stability of the movement of the bellows 10 and can avoid radial deformation thereof.

As shown in fig. 2, an installation inclined plane 20 is turned on the valve seat 5, a sealing ring 21 is arranged on the installation inclined plane 20, a positioning column 22 and a positioning ring 23 are arranged on the sealing ring 21 along the circumferential direction, and a positioning hole 24 engaged with the positioning column 22 and an annular positioning groove 25 engaged with the positioning ring 23 are arranged on the installation inclined plane 20. The design can further improve the sealing performance between the valve seat 5 and the ball core 4, and meanwhile, the sealing ring 21 is very convenient to replace.

As shown in fig. 2, a spring groove 26 is formed on an inner end surface of the first annular groove 7, a compression spring 27 is arranged in the spring groove 26, one end of the compression spring 27 abuts against the inner end surface of the spring groove 26, and the other end of the compression spring 27 abuts against an end surface of the valve seat 5. The compression spring 27 provides a secondary elastic compensation for the valve seat 5, which can further improve the sealing performance and safety performance between the valve seat 5 and the ball core 4.

As shown in fig. 2, a limiting groove 28 is formed in the end surface of the valve seat 5, the limiting groove 28 is in a frustum shape with a large outer part and a small inner part, and one end of the compression spring 27 close to the ball core 4 is embedded in the limiting groove 28, so that the mounting stability of the compression spring 27 can be improved.

Wherein, valve seat 5 and bellows 10 are as an organic whole, and this design can promote the bulk strength of valve seat 5 and bellows 10, and then promotes the life of valve seat 5 and bellows 10.

The working principle is as follows: when the condition of 5 expend with heat and contract with cold of disk seat takes place, bellows 10 can provide the elastic compensation for disk seat 5, makes it hug closely 4 surfaces of ball core all the time, indulges 5 surfaces of disk seat and takes place wearing and tearing, also can not produce great clearance between disk seat 5 and the ball core 4 to avoid the medium leakage, it has the advantage that sealing performance and security performance are reliable, is fit for using under the high temperature medium operating mode. Meanwhile, the supporting edge 11 of the corrugated pipe 10 is fixed by the pressing ring 12, so that the corrugated pipe is very convenient to disassemble and assemble, has a good fixing effect and is beneficial to later maintenance and replacement.

Claims

1. The high-temperature-resistant leak-proof forged steel ball valve comprises a valve body (1), a valve rod (2), a valve rod seat (3), a ball core (4) and a valve seat (5), wherein a flow channel (6) is arranged in the valve body (1), the valve rod (2) penetrates through the valve rod seat (3) and extends into the flow channel (6) in the valve body (1) to be in linkage connection with the ball core (4), and the valve seat (5) is arranged in the flow channel (6) and is used for forming sealing fit with the ball core (4); the method is characterized in that: be equipped with consecutive first ring channel (7), second ring channel (8) and third ring channel (9) in runner (6) to the diameter of first ring channel (7), second ring channel (8) and third ring channel (9) reduces in proper order, disk seat (5) slide and set up in first ring channel (7), and the one side of keeping away from ball core (4) on disk seat (5) is equipped with bellows (10), bellows (10) set up in second ring channel (8), and the one end that disk seat (5) were kept away from in bellows (10) is equipped with support border (11), is equipped with clamping ring (12) in third ring channel (9), clamping ring (12) are fixed in third ring channel (9) through locking screw (13), and support border (11) clamping is between third ring channel (9) and clamping ring (12).

2. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 1, wherein: an elastic gasket (14) is clamped between the pressing ring (12) and the third annular groove (9), and the thickness of the elastic gasket (14) is equal to that of the supporting edge (11).

3. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 1, wherein: the periphery of the pressing ring (12) is uniformly provided with a plurality of groups of positioning convex rings (15) acting on the supporting edge (11) along the axial direction.

4. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 1, wherein: the inner wall of the pressing ring (12) is provided with a circular groove (16) for the nut of the locking screw (13) to sink into, a water retaining pad (29) is arranged in the circular groove (16), the inner end face of the water retaining pad (29) is abutted to the nut end face of the locking screw (13), the periphery of the water retaining pad (29) is provided with a conical convex portion (17), and the inner wall of the circular groove (16) is provided with a conical concave portion (18) matched with the conical convex portion (17).

5. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 1, wherein: the pressing ring (12) is provided with an extending part (19) extending towards the direction close to the ball core (4), and the outer wall of the extending part (19) is attached to the inner wall of the corrugated pipe (10).

6. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 1, wherein: the valve seat (5) is turned on to have an installation inclined plane (20), be equipped with sealing washer (21) on installation inclined plane (20), be equipped with reference column (22) and holding ring (23) along circumference on sealing washer (21), be equipped with on installation inclined plane (20) with locating hole (24) that reference column (22) agrees with mutually and with annular constant head tank (25) that holding ring (23) agree with mutually.

7. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 1, wherein: a spring groove (26) is formed in the inner end face of the first annular groove (7), a compression spring (27) is arranged in the spring groove (26), one end of the compression spring (27) abuts against the inner end face of the spring groove (26), and the other end of the compression spring (27) abuts against the end face of the valve seat (5).

8. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 7, wherein: the ball valve is characterized in that a limiting groove (28) is formed in the end face of the valve seat (5), the limiting groove (28) is in a frustum shape with a large outer part and a small inner part, and one end, close to the ball core (4), of the compression spring (27) is embedded in the limiting groove (28).

9. A high temperature resistant, leak resistant forged steel ball valve as claimed in claim 1, wherein: the valve seat (5) and the corrugated pipe (10) are integrated.