CN216951750U - Top-mounted ultralow-temperature fixed ball valve - Google Patents
Top-mounted ultralow-temperature fixed ball valve Download PDFInfo
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- CN216951750U CN216951750U CN202123100146.8U CN202123100146U CN216951750U CN 216951750 U CN216951750 U CN 216951750U CN 202123100146 U CN202123100146 U CN 202123100146U CN 216951750 U CN216951750 U CN 216951750U
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Abstract
The utility model provides a fixed ball valve of upper assembling type ultra-low temperature, includes the valve body, has seted up the valve pocket in the middle of the valve body, installs the spheroid in the middle of the valve pocket, and valve body top fixed mounting has the valve gap, is provided with the valve rod in the middle of the valve gap, and the spheroid both sides are provided with preceding disk seat and back disk seat respectively, all are provided with the lip circle between the outer disc of preceding disk seat and back disk seat and the valve body passageway inner wall, and the one end of preceding disk seat and back disk seat all is provided with the clamping ring, and the clamping ring is located the passageway both sides of valve body, and the clamping ring surface is equallyd divide do not inconsistent with the terminal surface of takeover. The utility model overcomes the defects of the prior art, reduces the requirement on a sealing element by arranging the lip-shaped ring and the pressing ring, and can realize the bidirectional sealing of the rear valve seat; when the ball is installed, the ball can vertically enter the valve cavity from the upper opening of the valve body; then slowly rotating the ball body to enable the front valve seat and the rear valve seat to be held at two sides of the ball body; compared with the prior art, the assembly is more convenient.
Description
Technical Field
The utility model relates to the technical field of cyclone furnaces, in particular to an upper-mounted ultralow-temperature fixed ball valve.
Background
The common low-temperature ball valve generally adopts a one-way sealing structure, and the side wall of the ball body, which corresponds to the upstream end of the valve body, is provided with a pressure relief hole, so that when the ball body is closed, the valve cavity is always communicated with an upstream high-pressure medium, and accidents caused by low-temperature gasification of the medium are avoided. The valve rod part adopts the long-neck structure to set up, makes the sealing filler keep away from spheroid one end to ensure the valve rod's of valve in long-term switch process sealed. The defects of the common low-temperature valve are as follows: because the valve body works in a low-temperature state for a long time, the main sealing of the valve body only depends on the sealing of a pre-tightening type wound gasket, and the service life is short. And for the installation of a small-caliber sphere, the installation problem also exists due to the small size.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the upper-mounted ultralow-temperature fixed ball valve, which overcomes the defects of the prior art, is reasonable in design, reduces the requirements on a sealing element by arranging the lip-shaped ring and the pressure ring, and can realize the bidirectional sealing of the rear valve seat; when the ball is installed, the ball can vertically enter the valve cavity from the upper opening of the valve body firstly by enabling the axial length of the ball along the channel to be larger than the radial length of the ball and the compression amount of the disc spring; then slowly rotating the ball body to enable the front valve seat and the rear valve seat to be held at two sides of the ball body; compared with the prior art, the assembly is more convenient.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model provides a top-mounted ultra-low temperature fixed ball valve, includes the valve body, the valve pocket has been seted up in the middle of the valve body, install the spheroid in the middle of the valve pocket, valve body top fixed mounting has the valve gap, be provided with the valve rod in the middle of the valve gap, the lower extreme of valve rod passes the valve gap and is connected with the spheroid, the spheroid both sides are provided with preceding disk seat and back disk seat respectively, all be provided with the lip circle between the outer disc of preceding disk seat and back disk seat and the valve body passageway inner wall, the spheroidal one end of keeping away from with preceding disk seat and back disk seat all is provided with the clamping ring, the clamping ring is located the passageway both sides of valve body, the clamping ring surface is equallyd divide do not inconsistent with the terminal surface of takeover, takeover fixed welding respectively at the passageway both ends of valve body.
Preferably, the one end surface of clamping ring is seted up and is had the valve seat groove, the tip of preceding disk seat and back disk seat sets up respectively in the disk seat inslot of two clamping ring terminal surfaces that correspond, the dish spring groove has been seted up on the other end surface of clamping ring, install the dish spring in the dish spring groove, the dish spring is inconsistent with takeover terminal surface.
Preferably, a shaft hole is formed in the lower portion of the valve body, and a fixing shaft is mounted in the shaft hole through a fixing shaft screw.
Preferably, soft sealing rings are embedded in the contact surfaces of the front valve seat and the ball body and the contact surfaces of the rear valve seat and the ball body.
Preferably, the end face of the valve body, which is in contact with the adapter tube, is provided with a welding groove.
Preferably, the axial length of the ball along the passage is greater than the radial length of the ball plus the amount of compression of the belleville spring.
The utility model provides an upper-mounted ultralow-temperature fixed ball valve. The method has the following beneficial effects: when the end part is pressurized, the lip-shaped ring pushes the downstream rear valve seat to move towards the ball body so as to ensure the sealing effect of the rear valve seat and the ball body, and the medium pushes the front valve seat to move towards the ball body so as to ensure the sealing effect of the front valve seat and the ball body; when the pressure of the cavity in the valve body is high, the pressure ring is pushed to abut against the connecting pipe to be fixed through the lip-shaped ring, and then the valve seat is pushed to the ball body under the action of medium reverse thrust, so that the two-way sealing effect of the rear valve seat is achieved; the medium force pushes the front valve seat and the ball body to be separated, thereby achieving the purpose of pressure relief.
And by making the axial length of the ball along the passage greater than the radial length of the ball plus the amount of compression of the belleville spring. Therefore, when the ball valve is installed, the ball body can vertically enter the valve cavity from the opening above the valve body; then slowly rotating the ball body to enable the ball body to automatically compress the disc spring, and after the ball body rotates, enabling the front valve seat and the rear valve seat to be held at two sides of the ball body; compared with the prior art, the assembly is more convenient.
Drawings
In order to more clearly illustrate the present invention or the prior art solutions, the drawings used in the description of the prior art will be briefly described below.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the valve body of the present invention;
FIG. 3 is a diagram illustrating a step of installing a ball according to the present invention;
the numbering in the figures illustrates:
1. a valve body; 2. a valve cavity; 3. a sphere; 4. a valve cover; 5. a valve stem; 6. a front valve seat; 7. a rear valve seat; 8. a lip-shaped ring; 9. pressing a ring; 10. taking over a pipe; 11. a disc spring; 12. a shaft hole; 13. a fixed shaft; 14. a soft seal ring; 15. and welding the groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings.
Embodiment one, as shown in fig. 1-2, a top-mounted ultralow temperature fixed ball valve includes a valve body 1, a valve cavity 2 is provided in the middle of the valve body 1, a ball body 3 is installed in the middle of the valve cavity 2, a valve cover 4 is fixedly installed above the valve body 1, a valve rod 5 is provided in the middle of the valve cover 4, the lower end of the valve rod 5 penetrates through the valve cover 4 and is connected with the ball body 3, a front valve seat 6 and a rear valve seat 7 are respectively provided on two sides of the ball body 3, a lip ring 8 is respectively provided between the outer circumferential surfaces of the front valve seat 6 and the rear valve seat 7 and the inner wall of a channel of the valve body 1, compression rings 9 are respectively provided at one ends of the front valve seat 6 and the rear valve seat 7, the compression rings 9 are located on two sides of the channel of the valve body 1, the outer surfaces of the compression rings 9 are respectively abutted to the end surfaces of connecting pipes 10, and the connecting pipes 10 are respectively fixedly welded at two ends of the channel of the valve body 1.
In this embodiment, the one end surface of clamping ring 9 is seted up and is had a valve seat groove, and preceding disk seat 6 sets up respectively in the valve seat groove of two clamping ring 9 terminal surfaces that correspond with the tip of back disk seat 7, and the dish spring groove has been seted up to the other end surface of clamping ring 9, installs dish spring 11 in the dish spring groove, and dish spring 11 offsets with takeover 10 terminal surfaces.
The working principle is as follows:
when the end part is pressurized, the lip-shaped ring 8 pushes the downstream rear valve seat 7 to move towards the ball body 3 so as to ensure the sealing effect of the rear valve seat 7 and the ball body 3, and when the pressure of a cavity (namely a space formed by the valve body, the valve cover and the ball body) in the valve body 1 is higher, the lip-shaped ring 8 pushes the press ring 9 to be propped against the connecting pipe 10 to be fixed, and then the rear valve seat 7 is under the action of medium reverse thrust, so that the rear valve seat 7 is pushed towards the ball body, and the bidirectional sealing effect is achieved; and when the end part is pressurized, the medium pushes the front valve seat 6 to move towards the ball 3, thereby achieving the sealing effect. When the pressure of the middle cavity of the valve body 1 rises, the medium force pushes the front valve seat 6 and the ball body 3 to be separated, so that the purpose of pressure relief is achieved.
In this embodiment, as shown in figure 3, the axial length of the ball 3 along the passage is greater than the radial length of the ball 3 plus the amount of compression of the belleville spring 11. Therefore, when the valve body is installed in the early stage, the ball body 3 can vertically enter the valve cavity 2 from the opening above the valve body 1; slowly rotating the ball body 3 to enable the ball body 3 to automatically compress the disc spring 11, and after rotating by 90 degrees, enabling the front valve seat 6 and the rear valve seat 7 to be held at two sides of the ball body 3; compared with the prior art, the assembly is more convenient.
In this embodiment, a shaft hole 12 is formed below the valve body 1, and a stationary shaft 13 is mounted in the shaft hole 12 by a stationary shaft screw. The fixed shaft 13 is disassembled to realize the manual discharge of the middle cavity medium and impurities at the fully closed or fully opened position of the ball body 3.
In this embodiment, the contact surfaces of the front valve seat 6 and the rear valve seat 7 with the ball 3 are embedded with soft sealing rings 14. The sealing effect when the front valve seat 6 and the rear valve seat 7 respectively contact with the ball 3 is ensured by the soft sealing ring 14.
In the present embodiment, the end surface of the valve body 1 contacting the adapter tube 10 is provided with a welding groove 15. The welding groove 15 is used to facilitate the welding work between the adapter tube 10 after being mounted on both sides of the valve body 1.
The embodiment II also discloses an installation method of the upper-mounted ultralow-temperature fixed ball valve, which comprises the following steps:
step S1: processing the valve body 1 to enable positions of valve seats arranged on two sides of the valve body 1 to be processed and penetrated, and then respectively butt-welding the two connecting pipes 10 on two sides of the valve body 1;
step S2: the disc spring 11 and the pressing ring 9 are respectively arranged on two sides of an inner cavity channel of the valve body 1, then the front valve seat 6 and the rear valve seat 7 are arranged in the channels on two sides of the valve body 1 together with the lip-shaped ring 8 on the outer surface of the front valve seat 6 and the rear valve seat 7, and the end parts of the front valve seat 6 and the rear valve seat 7 correspond to a valve seat groove on the end surface of the pressing ring 9.
Step S3: vertically enabling the ball body 3 to enter the valve cavity 2 from an opening above the valve body 1;
step S4: slowly rotating the ball body 3 to enable the ball body 3 to automatically compress the disc spring 11, and after rotating by 90 degrees, enabling the front valve seat 6 and the rear valve seat 7 to be embraced at two sides of the ball body 3;
step S5: the bonnet 4 is mounted above the valve body 1 together with the stem 5 and the end of the stem 5 is connected to the ball.
Step S6: the fixed shaft 13 is mounted on the shaft hole 12 below the valve body 1 by a fixed shaft screw.
The method effectively solves the problem of difficult assembly of the small-caliber sphere due to small size.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a ball valve is fixed to upper assembling type ultra-low temperature which characterized in that: the valve comprises a valve body (1), a valve cavity (2) is formed in the middle of the valve body (1), a ball body (3) is mounted in the middle of the valve cavity (2), a valve cover (4) is fixedly mounted above the valve body (1), a valve rod (5) is arranged in the middle of the valve cover (4), the lower end of the valve rod (5) penetrates through the valve cover (4) and is connected with the ball body (3), a front valve seat (6) and a rear valve seat (7) are respectively arranged on two sides of the ball body (3), the valve body (1), the front valve seat (6) and the ball body (3) are connected through holes in the rear valve seat (7) to form a fluid channel; all be provided with lip circle (8) between the outer disc of preceding disk seat (6) and back disk seat (7) and valve body (1) passageway inner wall, the one end that spheroid (3) were kept away from in preceding disk seat (6) and back disk seat (7) all is provided with clamping ring (9), clamping ring (9) are located the passageway both sides of valve body (1), the terminal surface of clamping ring (9) surface is equallyd divide and is do not inconsistent with the terminal surface of takeover (10), takeover (10) fixed welding respectively at the passageway both ends of valve body (1).
2. The top-loading ultra-low temperature fixed ball valve as claimed in claim 1, wherein: the one end surface of clamping ring (9) is seted up and is had the valve seat groove, the tip of preceding disk seat (6) and back disk seat (7) sets up respectively in the valve seat groove of two clamping ring (9) terminal surfaces that correspond, the dish spring groove has been seted up on the other end surface of clamping ring (9), install dish spring (11) in the dish spring groove, dish spring (11) and takeover (10) terminal surface counterbalance.
3. The top-loading ultra-low temperature fixed ball valve as claimed in claim 1, wherein: a shaft hole (12) is formed in the lower portion of the valve body (1), and a fixing shaft (13) is installed in the shaft hole (12) through a fixing shaft screw.
4. The top-loading ultra-low temperature fixed ball valve as claimed in claim 1, wherein: the contact surface of the front valve seat (6) and the contact surface of the rear valve seat (7) and the ball body (3) are both embedded with soft sealing rings (14).
5. The top-loading ultra-low temperature fixed ball valve as claimed in claim 1, wherein: the axial length of the ball body (3) along the channel is greater than the radial length of the ball body (3) plus the compression amount of the disc spring (11).
6. The top-loading ultra-low temperature fixed ball valve as claimed in claim 1, wherein: the end face of the valve body (1) in contact with the connecting pipe (10) is provided with a welding groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123100146.8U CN216951750U (en) | 2021-12-10 | 2021-12-10 | Top-mounted ultralow-temperature fixed ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123100146.8U CN216951750U (en) | 2021-12-10 | 2021-12-10 | Top-mounted ultralow-temperature fixed ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951750U true CN216951750U (en) | 2022-07-12 |
Family
ID=82307586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123100146.8U Active CN216951750U (en) | 2021-12-10 | 2021-12-10 | Top-mounted ultralow-temperature fixed ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951750U (en) |
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2021
- 2021-12-10 CN CN202123100146.8U patent/CN216951750U/en active Active
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