CN210623659U - Novel heating power pipe network welding ball valve - Google Patents
Novel heating power pipe network welding ball valve Download PDFInfo
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- CN210623659U CN210623659U CN201921742990.0U CN201921742990U CN210623659U CN 210623659 U CN210623659 U CN 210623659U CN 201921742990 U CN201921742990 U CN 201921742990U CN 210623659 U CN210623659 U CN 210623659U
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Abstract
The utility model relates to a novel heating power pipe network welding ball valve, including valve body, disk seat subassembly and spherical case, spherical case has the runner, and the valve body is including relative first valve body and the second valve body that sets up, and each valve body all includes linkage segment and hemisphere section, and the terminal surface of the hemisphere section of two valve bodies passes through the girth weld and welds, and the disk seat subassembly sets up in the junction of the linkage segment of each valve body and hemisphere section, is equipped with seal structure between disk seat subassembly and the case. The valve body is formed by welding split valve bodies, so that the whole valve body is provided with a welding seam in the middle of the valve body, the welding seam is far away from the valve seat assembly, and the influence of high-temperature heat generated by welding on sealing is reduced. Meanwhile, the welding heat cannot deform the valve body at the valve seat assembly, and the problem of leakage caused by blocking of the valve seat assembly due to deformation of the valve body caused by the welding heat in the prior art is solved. The spherical valve body has compact structure and high rigidity, and ensures that the valve is opened and closed flexibly when the valve is subjected to axial force and radial force.
Description
Technical Field
The utility model relates to a valve field, concretely relates to novel heating power pipe network welding ball valve.
Background
The traditional heating power pipe network ball valve mostly adopts the valve body of straight cylindric outward appearance, is equipped with the disk seat subassembly in the valve body, and the case adopts spherical structure, adopts the sealing washer of single track polytetrafluoroethylene material between case and the disk seat subassembly, and the sealed position is close to the splice of valve gap and valve body, and the high temperature that produces during the welding conducts the sealing washer position between case and the disk seat subassembly easily, leads to the sealing washer scaling loss or warp the inefficacy. And heat can act on the straight cylindric valve body of valve seat subassembly department during the welding moreover, leads to the straight cylindric valve body of this department to warp under the welding stress effect to cause the jam of valve seat subassembly, lead to the valve to be unable to seal.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel heating power pipe network welding ball valve to solve the heat that the welding that exists among the prior art produced and burn the sealing washer easily and make the valve body warp the problem that leads to sealed inefficacy.
In order to achieve the above object, the utility model discloses a novel heating power pipe network welding ball valve adopts following technical scheme: the utility model provides a novel heating power pipe network welding ball valve, includes the valve body, disk seat subassembly and spherical case, spherical case has the runner, the valve body is including relative first valve body and the second valve body that sets up, each valve body all include the linkage segment and with linkage segment integrated into one piece and the hemisphere section of opening orientation another valve body, the terminal surface of the hemisphere section of two valve bodies passes through the circular weld welding and is in the same place, the disk seat subassembly sets up in the junction of the linkage segment of each valve body and hemisphere section, be provided with seal structure between disk seat subassembly and the case.
The valve core comprises a cylinder body and a spherical side plate located on the outer side of the cylinder body, the inner cavity of the cylinder body forms the flow channel, a cavity is formed between the cylinder body and the spherical side plate, a first mounting hole for mounting a fixed shaft and a second mounting hole for mounting a driving shaft of an electric actuating mechanism are oppositely arranged at the welding position of the end faces of the first valve body and the second valve body, the cavity is internally provided with a first mounting boss corresponding to the first mounting hole and a second mounting boss corresponding to the second mounting hole, the first mounting boss is provided with a matching hole for mounting the fixed shaft in a rotating matching manner, and the second mounting boss is provided with a connecting hole for connecting a driving shaft of the electric actuating mechanism in a transmission manner.
The first mounting hole is internally provided with a shaft sleeve in a welding mode, the fixed shaft is mounted in the shaft sleeve, and the end portion of the shaft sleeve is detachably connected with an end cover.
The sliding bearing is welded in the second mounting hole, a connecting flange is arranged at the end part of the sliding bearing to mount an electric actuating mechanism, and the electric actuating mechanism is driven to rotate and mounted in close fit with the inner ring of the sliding bearing.
And a bearing sealing cover is arranged between the end part of the sliding bearing and the connecting flange.
The utility model has the advantages that: the hemisphere section of first valve body and the hemisphere section terminal surface welding of second valve body for whole valve body has and has a welding seam in the centre of spherical valve body, and the valve seat subassembly sets up in the linkage segment of each valve body and the junction of hemisphere section moreover, makes the welding seam keep away from the valve seat subassembly, has reduced the high temperature heat that the welding produced to sealed influence. Meanwhile, the welding heat cannot deform the valve body at the valve seat assembly, and the problem of leakage caused by blocking of the valve seat assembly due to deformation of the valve body caused by the welding heat in the prior art is solved. And the spherical valve body has compact structure and high rigidity, and ensures that the valve can be opened and closed flexibly when the valve is subjected to axial pressure, tension and radial bending moment.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a novel heat pipe network welded ball valve of the present invention;
FIG. 2 is a schematic view of the mating arrangement of the valve body and valve seat assembly of FIG. 1;
FIG. 3 is a schematic illustration of the construction of the valve seat assembly.
Detailed Description
The utility model discloses a novel heating power pipe network welding ball valve's embodiment, as shown in fig. 1-3, including valve body, disk seat subassembly 4 and spherical case 3, spherical case 3 has runner 6. The valve body includes relative first valve body 1 and the second valve body 2 that sets up, and each valve body all includes linkage segment 29 and with linkage segment 29 integrated into one piece and the opening towards the hemisphere section 30 of another valve body, and the terminal surface of the hemisphere section 30 of two valve bodies passes through the annular weld welding together. The valve seat assembly 4 is arranged at the joint of the connecting section and the hemispherical section of each valve body, and a sealing structure 21 is arranged between the valve seat assembly and the valve core. An O-shaped sealing ring is arranged between the valve seat component and the inner wall of the valve body.
The number of valve bodies in this embodiment is two, and correspondingly the number of seat assemblies 4 is also two. The two valve bodies have the same structure, and the two valve seat assemblies have the same structure, and the structure of one of the valve seat assemblies will be described in detail below as an example. Valve seat assembly 4 demountable installation is in corresponding valve body, and valve seat assembly 4 is including valve seat 15, spring holder 16 and the retaining ring 17 that sets gradually, and seal structure 21 sets up on valve seat 15. The spring seat 16 is provided with a spring mounting hole for mounting a spring and an opening of the spring mounting hole faces the valve seat, the other end face of the spring seat is provided with a plurality of screw rods 19 which are circumferentially arranged on the spring seat at intervals, the retainer ring 17 is provided with screw rod through holes which are in one-to-one correspondence with the screw rods, and the screw rods are provided with locking nuts 18. An annular limiting groove 20 is formed in the outer side of the check ring on the inner wall of the valve body, and a steel wire check ring for holes is installed in the annular limiting groove to limit and stop the valve seat assembly. The end part of the medium flow channel of each valve body is provided with an expanding section, so that the valve seat can be conveniently installed and taken out. When the valve breaks down, the valve body does not need to be disassembled to replace internal parts, so that the maintenance time of the valve is greatly shortened, the valve can be completed even on the user site, and great convenience is brought to the maintenance of a pipe network of a user.
The sealing structure 21 is a three-stage sealing structure, the valve seat 15 has a conical surface 26 matched with the spherical valve core, and the sealing structure 21 comprises a first sealing ring 23, a second sealing ring 22 and a metal sealing layer 25 which are arranged on the conical surface. First sealing washer 23 is viton O shape circle and its cross-section is the triangle-shaped structure, and a prismatic edge of triangle-shaped structure is used for being used for with the sealed cooperation of spherical case roof pressure towards spherical case, is provided with the first mounting groove that supplies first sealing washer 23 installation on the conical surface, is provided with the annular 24 of the rubber circle dismouting of being convenient for in first mounting groove department on conical surface 26. The second sealing ring 22 is a reinforced polytetrafluoroethylene polymer sealing ring, the cross section of the sealing ring is of a rectangular structure, and a second mounting groove for mounting the sealing ring is formed in the conical surface, and the opening of the second mounting groove faces the spherical valve core. The end angle of the rectangular structure towards the spherical valve core is lost to form a slope surface for being in abutting and sealing fit with the spherical valve core. The metal sealing layer 25 is made of a build-up welding cobalt-based alloy, the metal sealing surface does not cover the whole conical surface, and the metal sealing layer covers the part of the conical surface except the second sealing ring in the radial direction of the valve seat. The arrangement of the metal sealing layer 25 enables the valve seat to automatically clean granular media which affect the sealing effect, such as dirt and scale attached to the surface of the spherical valve core, in the opening and closing processes of the valve, so that the long-term effective operation of the valve is ensured. The first sealing ring is positioned on the conical surface part of the kettle cover of the alloy sealing layer. The height of the conical surface 26 of the first sealing ring 23 protruding towards the edge of the spherical valve core is larger than the height of the second sealing ring 22 protruding towards the spherical valve core, and the height of the second sealing ring 22 protruding towards the spherical valve core is larger than the thickness of the alloy sealing layer 25, so that the first sealing ring 23 forms a first sealing, the second sealing ring 22 forms a second sealing, and the alloy sealing layer 25 forms a third sealing.
The three-stage sealing process comprises the following steps: the first sealing ring 23 is tightly attached to the surface of the spherical valve core under the action of the spring to form initial sealing, namely first sealing, when the working condition system starts to work, the medium pressure generates a piston effect to generate medium thrust, the first sealing ring generates elastic deformation to promote the second sealing ring 22 to be tightly attached to the surface of the spherical valve core to form second sealing, when the system pressure continuously rises, the first sealing ring and the second sealing ring both generate elastic deformation, and at the moment, the metal sealing layer 25 on the valve seat is tightly attached to the surface of the spherical valve core to form third sealing. The design of tertiary seal structure makes the valve can be fit for the operating mode of different pressure grades, and valve seal is safe and reliable more.
The valve core 3 comprises a cylinder 7 and a spherical side plate 8 positioned outside the cylinder, the inner cavity of the cylinder 7 forms the flow passage 6, and a cavity is formed between the cylinder 7 and the spherical side plate 8 to play a role in reducing weight. The end face welding part of the first valve body 1 and the second valve body 2 is oppositely provided with a first mounting hole for mounting the fixed shaft and a second mounting hole for mounting the driving shaft of the electric actuating mechanism. The cavity is provided with a first mounting boss 12 corresponding to the first mounting hole and a second mounting boss 9 corresponding to the second mounting hole. The first mounting boss 12 is provided with a matching hole for being mounted with the fixed shaft 13 in a rotating matching mode, and the second mounting boss 9 is provided with a connecting hole for the driving shaft 11 of the electric actuating mechanism 5 to be in transmission connection. A shaft sleeve is welded in the first mounting hole, the fixed shaft 13 is mounted in the shaft sleeve, and an end cover 14 is detachably connected to the end of the shaft sleeve. The sliding bearing 10 is welded in the second mounting hole, a connecting flange 27 is arranged at the end part of the sliding bearing 10 so as to mount an electric actuator, and the driving rotor of the electric actuator is mounted in close fit with the inner ring of the sliding bearing. A bearing cover 28 is arranged between the end part of the sliding bearing 10 and the connecting flange 27, and the three are fixedly connected through screws.
The valve body of the valve in the embodiment is formed by welding two split valve bodies, a single welding seam form is adopted, the prior art of welding point walls is few, and leakage points are few. The welding seam is in the intermediate position of whole valve body, and the valve seat subassembly is kept away from to the welding seam, and the high temperature heat that produces among the welding process is as far as possible passed to the valve seat position, ensures that the valve seat can not warp and causes the jam to lead to the fact sealed inefficacy, has guaranteed moreover that the sealed welding seam heat influence between valve seat and the valve body is less, ensures the leakproofness. And the spherical valve body has compact structure and high rigidity, and ensures that the valve can be opened and closed flexibly when the valve is subjected to axial pressure, tension and radial bending moment.
In other embodiments of the present invention, on the premise of ensuring the sealing property between the valve core and the valve seat, the sealing structure may only have the first sealing ring to form a seal; the sealing structure can also only be provided with a second sealing ring to form a seal; the sealing structure can also only have a metal sealing layer to form a seal; the sealing structure can also be provided with any two of the first sealing ring, the second sealing ring and the metal sealing layer at the same time, and two seals are provided at the moment.
Claims (5)
1. The utility model provides a novel heating power pipe network welding ball valve, includes valve body, disk seat subassembly and spherical case, and spherical case has runner, its characterized in that: the valve body includes relative first valve body and the second valve body that sets up, and each valve body all includes linkage segment and with linkage segment integrated into one piece and the opening towards the hemisphere section of another valve body, the terminal surface of the hemisphere section of two valve bodies passes through the welding of annular weld together, and the disk seat subassembly sets up in the junction of the linkage segment of each valve body and hemisphere section, is provided with seal structure between disk seat subassembly and the case.
2. The novel welded ball valve for a heat distribution pipe network as claimed in claim 1, wherein: the valve core comprises a cylinder body and a spherical side plate located on the outer side of the cylinder body, the inner cavity of the cylinder body forms the flow channel, a cavity is formed between the cylinder body and the spherical side plate, a first mounting hole for mounting a fixed shaft and a second mounting hole for mounting a driving shaft of an electric actuating mechanism are oppositely arranged at the welding position of the end faces of the first valve body and the second valve body, the cavity is internally provided with a first mounting boss corresponding to the first mounting hole and a second mounting boss corresponding to the second mounting hole, the first mounting boss is provided with a matching hole for mounting the fixed shaft in a rotating matching manner, and the second mounting boss is provided with a connecting hole for connecting a driving shaft of the electric actuating mechanism in a transmission manner.
3. The novel welded ball valve for a heat distribution pipe network as claimed in claim 2, wherein: the first mounting hole is internally provided with a shaft sleeve in a welding mode, the fixed shaft is mounted in the shaft sleeve, and the end portion of the shaft sleeve is detachably connected with an end cover.
4. The novel welded ball valve for a heat distribution pipe network as claimed in claim 2, wherein: the sliding bearing is welded in the second mounting hole, a connecting flange is arranged at the end part of the sliding bearing to mount an electric actuating mechanism, and the electric actuating mechanism is driven to rotate and mounted in close fit with the inner ring of the sliding bearing.
5. The novel welded ball valve for a heat pipe network as claimed in claim 4, wherein: and a bearing sealing cover is arranged between the end part of the sliding bearing and the connecting flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921742990.0U CN210623659U (en) | 2019-10-17 | 2019-10-17 | Novel heating power pipe network welding ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921742990.0U CN210623659U (en) | 2019-10-17 | 2019-10-17 | Novel heating power pipe network welding ball valve |
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| Publication Number | Publication Date |
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| CN210623659U true CN210623659U (en) | 2020-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921742990.0U Active CN210623659U (en) | 2019-10-17 | 2019-10-17 | Novel heating power pipe network welding ball valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829814A (en) * | 2020-07-20 | 2020-10-27 | 西南石油大学 | Ball valve for sampling, natural gas hydrate fidelity sampler and sampling method |
-
2019
- 2019-10-17 CN CN201921742990.0U patent/CN210623659U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829814A (en) * | 2020-07-20 | 2020-10-27 | 西南石油大学 | Ball valve for sampling, natural gas hydrate fidelity sampler and sampling method |
| CN111829814B (en) * | 2020-07-20 | 2022-01-28 | 西南石油大学 | Ball valve for sampling, natural gas hydrate fidelity sampler and sampling method |
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