CN220320426U

CN220320426U - Low-temperature floating ball valve

Info

Publication number: CN220320426U
Application number: CN202321663290.9U
Authority: CN
Inventors: 谢正泽; 刘敏楠; 沙涛; 雷海森; 吴平
Original assignee: Qingdao Weivalve Technology Co ltd
Current assignee: Qingdao Weivalve Technology Co ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-01-09
Anticipated expiration: 2033-06-28

Abstract

The utility model discloses a low-temperature floating ball valve which comprises a valve seat and a ball valve fitting pipe inlet assembly, wherein a valve ball is movably arranged in the valve seat, the top of the valve ball is fixedly connected with a valve rod, one end of the valve seat is provided with a liquid inlet end, the other end of the valve seat is provided with a liquid outlet end, connecting flanges are welded on the liquid inlet end and the liquid outlet end, the connecting flanges on the liquid inlet end are fixedly connected with a fixing flange at the end part of the ball valve fitting pipe inlet assembly in a threaded manner, and the connecting flanges and the fixing flange are sealed through a sealing assembly. This low temperature ball valve that floats when external inlet tube is incline state, the laminating flange pipe that accessible slope set up this moment carries out the installation work to the external inlet tube that is in incline state, laminating flange pipe that sets up through this slope, the laminating degree between multiplicable inlet tube and the laminating flange pipe, after the installation finishes, inseparabler, improves sealing performance between the two.

Description

Low-temperature floating ball valve

Technical Field

The utility model relates to the field of ball valves, in particular to a low-temperature floating ball valve.

Background

Under the action of medium pressure, the ball body of the low-temperature floating ball valve can generate certain displacement and is tightly pressed on the sealing surface of the outlet end, so that the sealing of the outlet end is ensured; the floating ball valve has the advantages that the structure is simple, the sealing performance is good, the ball valve is divided into an upper ball valve and a side ball valve according to different installation modes, compared with the side ball valve, the upper ball valve has the advantages of reducing the external leakage point, reducing the influence of pipeline stress on a flange in the valve, and the like, meanwhile, the upper ball valve can realize the maintenance on a pipeline, is simple and rapid to disassemble, is convenient and rapid to maintain, greatly saves the maintenance time, and reduces the loss in production to the minimum; however, the valve seat of the existing upper-mounted floating ball valve is easy to be pressed and deformed under the pressure of a medium, so that the sealing performance of the valve is affected;

to solve the problems, the prior art discloses (application number: CN 201621028626.4) a low-temperature floating ball valve through searching; the ball body is arranged in the valve body, the valve seat assembly is arranged between the ball body and the valve body, and the upstream and the downstream of the ball body are respectively provided with the valve seat assembly; the valve seat assembly comprises a valve seat inner ring, a valve seat and a valve seat support, wherein the valve seat is sleeved on the valve seat inner ring, and the valve seat support is sleeved on the valve seat; "

When the ball valve is actually installed, the angle of the connecting flange at the end part of the ball valve is 180 degrees, and when the water inlet pipe which is obliquely arranged outside is required to be connected, the water inlet pipe is required to be forcibly broken to the position opposite to the ball valve, so that the water inlet end of the ball valve is difficult to attach to the water inlet pipe outside, and the situation that the sealing effect of an attaching surface is poor is caused.

Disclosure of Invention

The utility model aims to provide a low-temperature floating ball valve, which solves the defects in the prior art.

In order to achieve the above purpose, the low-temperature floating ball valve comprises a valve seat and a ball valve fitting pipe inlet assembly, wherein a valve ball is movably installed in the valve seat, the top of the valve ball is fixedly connected with a valve rod, meanwhile, one end of the valve seat is provided with a liquid inlet end, the other end of the valve seat is provided with a liquid outlet end, connecting flanges are welded on the liquid inlet end and the liquid outlet end, the connecting flanges on the liquid inlet end are fixedly connected with a fixing flange at the end part of the ball valve fitting pipe inlet assembly in a threaded manner, and the connecting flanges and the fixing flange are sealed through a sealing assembly;

the ball valve laminating advances the pipe subassembly and comprises flange, laminating pipe and laminating flange pipe triplex, and laminating pipe one end and flange rigid coupling, laminating pipe keeps away from flange's one end and laminating flange pipe rigid coupling simultaneously.

Preferably, the laminating pipe is the level setting, and laminating flange pipe is at the tip tilt up 15 of laminating pipe, and the one end that laminating flange pipe kept away from the laminating pipe simultaneously is through flange and external inlet tube intercommunication.

Preferably, the sealing assembly comprises a sealing gasket, an outer sealing groove and an inner sealing groove, the inner walls of the connecting flange and the fixing flange are respectively provided with the outer sealing groove and the inner sealing groove, and the outer sealing groove and the inner sealing groove are of concentric circle structures.

Preferably, the sealing gasket consists of an outer sealing strip, a connecting sheet and an inner sealing strip, wherein the outer side of the connecting sheet is fixedly connected with the outer sealing strip, and the inner side of the connecting sheet is fixedly connected with the inner sealing strip.

Preferably, the outer sealing strip and the inner sealing strip are respectively clamped in the outer sealing groove and the inner sealing groove, the outer sealing strip and the outer sealing groove are in interference fit, and meanwhile the inner sealing strip and the inner sealing groove are in interference fit.

Preferably, the ball valve laminating advances pipe assembly and sets up to two sets of both sides of installing at the low temperature ball valve body respectively, and ball valve laminating advances pipe assembly and be detachable construction on the low temperature ball valve body, and ball valve laminating advances pipe assembly's length simultaneously is 15cm.

Compared with the prior art, the utility model has the beneficial effects that: when external inlet tube is the incline condition, the laminating flange pipe that accessible slope set up this moment carries out the installation work to the external inlet tube that is in the incline condition, laminating flange pipe that sets up through this slope, the laminating degree between multiplicable inlet tube and the laminating flange pipe, after the installation finishes, more closely improves sealing performance between the two.

Drawings

FIG. 1 is a schematic elevational view of the structure of the present utility model;

FIG. 2 is a schematic view of the seal assembly of FIG. 1 in a block diagram of the present utility model;

FIG. 3 is a side view of the structural attachment flange of the present utility model;

FIG. 4 is a schematic diagram of a second embodiment of the present utility model;

FIG. 5 is a schematic diagram of a third embodiment of the present utility model;

reference numerals in the drawings: 1. a low temperature ball valve body; 2. a valve seat; 3. a valve ball; 4. a liquid inlet end; 5. a connecting flange; 6. fitting the ball valve into the pipe assembly; 61. a fixed flange; 62. fitting the pipe; 63. attaching a flange pipe; 7. a seal assembly; 70. a sealing gasket; 71. an outer seal groove; 72. an inner seal groove; 73. an outer sealing strip; 74. a connecting sheet; 75. an inner sealing strip.

Detailed Description

The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one: referring to fig. 1-3, the utility model provides a low-temperature floating ball valve, which comprises a valve seat 2 and a ball valve fitting inlet pipe assembly 6, wherein a valve ball 3 is movably installed in the valve seat 2, the top of the valve ball 3 is fixedly connected with a valve rod, meanwhile, one end of the valve seat 2 is provided with a liquid inlet end 4, the other end of the valve seat 2 is provided with a liquid outlet end, the liquid inlet end 4 and the liquid outlet end are both welded with a connecting flange 5, the connecting flange 5 on the liquid inlet end 4 is fixedly connected with a fixing flange 61 at the end part of the ball valve fitting inlet pipe assembly 6 in a threaded manner, and the connecting flange 5 and the fixing flange 61 are sealed through a sealing assembly 7;

the ball valve fitting pipe inlet assembly 6 consists of a fixed flange 61, a fitting pipe 62 and a fitting flange pipe 63, one end of the fitting pipe 62 is fixedly connected with the fixed flange 61, and one end of the fitting pipe 62 far away from the fixed flange 61 is fixedly connected with the fitting flange pipe 63.

Working principle: when using, when external inlet tube is the incline condition, the laminating flange pipe 63 that accessible slope set up this moment carries out the installation work to the external inlet tube that is in the incline condition, laminating flange pipe 63 that sets up through this slope, the laminating degree between multiplicable inlet tube and the laminating flange pipe 63, after the installation finishes, inseparabler, improves sealing performance between the two.

As a preferred embodiment, the joint pipe 62 is arranged horizontally, and the joint flange pipe 63 is inclined upward by 15 ° at the end of the joint pipe 62, and at the same time, the end of the joint flange pipe 63 far from the joint pipe 62 is communicated with an external water inlet pipe through a flange.

As shown in fig. 1-3: the joint flange pipe 63 is inclined upwards by 15 degrees at the end part of the joint pipe 62, so that the water inlet pipe outside the inclined arrangement can be matched, the water inlet pipe outside the inclined arrangement can be connected more quickly, the water inlet pipe outside the inclined arrangement is not required to be broken off, and the labor is saved during installation.

As a preferred embodiment, the seal assembly 7 includes a gasket 70, an outer seal groove 71 and an inner seal groove 72, and the inner walls of the connecting flange 5 and the fixing flange 61 are provided with the outer seal groove 71 and the inner seal groove 72, and the outer seal groove 71 and the inner seal groove 72 are concentric.

As shown in fig. 1-3: the connecting flange 5 and the fixing flange 61 are sealed through the sealing assembly 7, and the sealing assembly 7 can seal the connecting flange 5 and the fixing flange 61, so that leakage between the connecting flange 5 and the fixing flange 61 is avoided.

As a preferred embodiment, the gasket 70 is composed of three parts, namely an outer sealing strip 73, a connecting piece 74 and an inner sealing strip 75, wherein the outer side of the connecting piece 74 is fixedly connected with the outer sealing strip 73, and the inner side of the connecting piece 74 is fixedly connected with the inner sealing strip 75.

As shown in fig. 2: the gasket 70 is composed of an outer sealing strip 73, a connecting sheet 74 and an inner sealing strip 75, the gasket 70 is arranged between the connecting flange 5 and the fixing flange 61 and is extruded through bolts, so that the gasket 70 made of rubber materials is extruded to fill gaps between the connecting flange 5 and the fixing flange 61, and the situation of leakage and seepage between the connecting flange 5 and the fixing flange 61 is avoided.

As a preferred embodiment, the outer sealing strip 73 and the inner sealing strip 75 are respectively clamped inside the outer sealing groove 71 and the inner sealing groove 72, and the outer sealing strip 73 and the outer sealing groove 71 are in interference fit and are in interference fit with each other, and meanwhile, the inner sealing strip 75 and the inner sealing groove 72 are in interference fit and are in interference fit.

As a preferred embodiment, the ball valve fitting pipe inlet assembly 6 is arranged to be installed on two sides of the low-temperature ball valve body 1 respectively, the ball valve fitting pipe inlet assembly 6 is of a detachable structure on the low-temperature ball valve body 1, and meanwhile, the length of the ball valve fitting pipe inlet assembly 6 is 15cm.

Embodiment two: as shown in fig. 4: the present embodiment is basically identical to the first embodiment in structure, except that: in the first embodiment, the attaching flange pipe 63 is inclined upward by 15 ° at the end of the attaching pipe 62, and in this embodiment, the attaching flange pipe 63 and the attaching pipe 62 are horizontally arranged, so that an external water inlet pipe placed horizontally can be adapted.

Embodiment III: as shown in fig. 5: the present embodiment is basically identical to the first embodiment in structure, except that: in the first embodiment, the fitting flange pipe 63 is inclined upward at 15 ° at the end of the fitting pipe 62, and in the present embodiment, the fitting flange pipe 63 is inclined upward at 30 ° on the fitting pipe 62, so that the external water inlet pipe which is inclined more in the first embodiment can be suitably implemented.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low temperature ball valve that floats, includes disk seat (2) and ball valve laminating advances pipe assembly (6), and inside movable mounting valve ball (3) of disk seat (2), and the top and the valve rod rigid coupling of valve ball (3), the one end of disk seat (2) sets up feed liquor end (4) simultaneously to the other end of disk seat (2) sets up the flowing back end, and equal welding flange (5) on feed liquor end (4) and the flowing back end, its characterized in that: the connecting flange (5) on the liquid inlet end (4) is fixedly connected with the fixing flange (61) attached to the end part of the pipe inlet assembly (6) through screw threads, and the connecting flange (5) and the fixing flange (61) are sealed through the sealing assembly (7);

ball valve laminating advances pipe subassembly (6) by mounting flange (61), laminating pipe (62) and laminating flange pipe (63) triplex, and laminating pipe (62) one end and mounting flange (61) rigid coupling, the one end and the laminating flange pipe (63) rigid coupling that mounting flange (61) were kept away from to laminating pipe (62) simultaneously.

2. The cryogenic float ball valve of claim 1 wherein: the laminating pipe (62) is the level setting, and laminating flange pipe (63) is at the tip tilt up 15 of laminating pipe (62), and the one end that laminating flange pipe (63) kept away from laminating pipe (62) is through flange and external inlet tube intercommunication simultaneously.

3. The cryogenic float ball valve of claim 1 wherein: the sealing assembly (7) comprises a sealing gasket (70), an outer sealing groove (71) and an inner sealing groove (72), the inner walls of the connecting flange (5) and the fixing flange (61) are respectively provided with the outer sealing groove (71) and the inner sealing groove (72), and meanwhile the outer sealing groove (71) and the inner sealing groove (72) are of concentric circle structures.

4. A cryogenic float ball valve as claimed in claim 3 wherein: the sealing gasket (70) is composed of an outer sealing strip (73), a connecting sheet (74) and an inner sealing strip (75), wherein the outer side of the connecting sheet (74) is fixedly connected with the outer sealing strip (73), and the inner side of the connecting sheet (74) is fixedly connected with the inner sealing strip (75).

5. The cryogenic float ball valve of claim 4 wherein: the outer sealing strip (73) and the inner sealing strip (75) are respectively clamped inside the outer sealing groove (71) and the inner sealing groove (72), the outer sealing strip (73) and the outer sealing groove (71) are installed in an interference fit mode, and meanwhile the inner sealing strip (75) and the inner sealing groove (72) are installed in an interference fit mode.

6. The cryogenic float ball valve of claim 1 wherein: the ball valve laminating advances pipe subassembly (6) and sets up to two sets of both sides of installing in low temperature ball valve body (1) respectively, and ball valve laminating advances pipe subassembly (6) and be detachable construction on low temperature ball valve body (1), and the length that ball valve laminating advances pipe subassembly (6) is 15cm simultaneously.