CN219292278U

CN219292278U - Angle type welding valve purging tool

Info

Publication number: CN219292278U
Application number: CN202223485469.8U
Authority: CN
Inventors: 王利华; 豆艺菲; 陈红方; 杨昌慧; 毛华娟
Original assignee: Dongchen Intelligent Technology Co ltd
Current assignee: Dongchen Intelligent Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-07-04
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to an angular welding valve purging tool. At present, the traditional purging method wastes a great deal of manpower, material resources and financial resources, and often has the defect of incomplete purging. The utility model comprises a valve body, wherein an inlet flow passage for entering fluid and an outlet flow passage for exiting fluid are arranged in the valve body; a valve body cavity is arranged in the valve body corresponding to the space between the inlet runner and the outlet runner; the valve seat is arranged at the bottom of the cavity of the valve body, and is characterized in that a valve seat compression ring for compressing the valve seat and the valve body is arranged on the valve seat; a valve seat purging pressing plate is arranged on the valve seat; a purging tool assembly is arranged on the valve seat purging pressing plate; the purging tool component consists of a high-pressure seamless steel pipe and a valve cover purging pressing plate; valve body top sets up the valve gap pull ring, is equipped with seal structure between valve gap pull ring and the valve gap sweep the clamp plate, and high pressure seamless steel pipe wears out from the center guiding hole of valve gap pull ring. The utility model can prolong the service life of the valve and ensure the long-time reliable operation of the system.

Description

Angle type welding valve purging tool

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to an angle type welding valve purging tool.

Background

Purging is an important link before completion and production operation of petrochemical equipment, and is the final inspection and acceptance of equipment technological process and engineering quality, so that the whole equipment can be safely, stably and normally operated.

Before the device is put into use for the first time, the pipeline and equipment which are installed and inspected to be qualified need to be purged, and the purpose is to purge and test the pipeline by using fluids such as air (nitrogen), steam, water, chemical solution and the like, so that residual impurities in the pipeline in the construction process are removed, otherwise, after the device is operated, the quality of passing media is affected by the existence of impurities such as rust, welding slag, ash and the like, and the impurities are brought to each equipment along with the media, so that a valve is blocked and a valve sealing surface is damaged, and the normal operation of the system working condition is affected.

At present, the traditional purging method needs to dismantle instruments, pore plates, safety valves, throttle valves, check valves and regulating valves before purging, temporary short pipes are used for replacing or taking measures to protect the instruments, pore plates, safety valves, throttle valves, check valves and regulating valves, and the instruments, the pore plates, the safety valves, the check valves and the regulating valves are recovered after the purging is qualified, so that a great deal of manpower, material resources and financial resources are wasted, and the purging is often not thorough.

Secondly, when the on-site purging device is arranged, the on-site purging device cannot be quickly and labor-saving, and the disassembly and assembly tasks can be completed under the condition of not damaging the valve body. Although the problem that the purging is carried out without dismantling the valve is solved by the traditional angle type welding valve purging tool, because parts in the valve are mutually limited and fixed, strict requirements are put forward on the size of a purging tool to be used, and the difficulty and cost of part processing are increased.

Meanwhile, the shape and the size of the opening of the purging tool can influence the smoothness of the channel, purging can not be completed easily, and the valve body is damaged. Moreover, the valve cover pull ring and the valve cover sweeping pressing plate are in bolted connection, and when sweeping, the stress of each bolt of the bolt group cannot be completely uniform, and part of bolts can be fatigued and broken in advance, so that loss is caused.

It can be concluded that the existing corner welding valve purging tool cannot meet the application of the working condition.

Disclosure of Invention

The utility model aims at the problems and provides the angular welding valve purging tool which is convenient to assemble, disassemble and maintain, can prolong the service life of the valve and ensures the long-time reliable operation of the system.

The utility model adopts the following technical scheme: the utility model provides an angle welding valve sweeps frock, includes the valve body, be equipped with the import runner that fluid got into and the export runner that fluid flows out in the valve body; a valve body cavity is arranged in the valve body, corresponding to the space between the inlet runner and the outlet runner; the valve seat is arranged at the bottom of the cavity of the valve body, and is characterized in that a valve seat compression ring for compressing the valve seat and the valve body is arranged on the valve seat; a valve seat purging pressing plate is arranged on the valve seat; a purging tool assembly is arranged on the valve seat purging pressing plate; the purging tool assembly consists of a high-pressure seamless steel pipe and a valve cover purging pressing plate; valve body top sets up the valve gap pull ring, is equipped with seal structure between valve gap pull ring and the valve gap sweep the clamp plate, and high-pressure seamless steel pipe wears out from the center guiding hole of valve gap pull ring. The valve seat and the valve cover are of self-sealing structures, and the valve cover purging pressing plate and the valve seat purging pressing plate are pressed by the fluid pressure to achieve the sealing effect.

Preferably, the lower pipe wall of the high-pressure seamless steel pipe is uniformly provided with a plurality of through holes. The through holes are arranged in different directions, so that the uniform blowing and sweeping of all directions in the cavity is ensured.

Preferably, the through holes are rectangular, four in number and perpendicular to each other. The air blown out of each through hole is not interfered with each other, and the smooth purging operation is ensured.

Preferably, a sealing structure formed by combining a self-sealing ring, a self-sealing pressing ring and four-opening rings is sequentially arranged between the valve cover pull ring and the valve cover blowing pressing plate from bottom to top.

Preferably, the valve cover purging pressing plate is provided with an inclined step surface for installing a self-sealing ring and a self-sealing pressing ring, and the self-sealing ring adopts a metal edge-wrapping mode. The metal wrapping structure has reliable performance and high temperature resistance.

Preferably, the four open rings are distributed in four blocks, and are detached by four holes punched on the side of the valve body.

Preferably, the valve cover pull ring is provided with a threaded hole, and the bolt is directly connected with the threaded hole on the valve cover sweeping pressing plate, so that the valve cover pull ring is fixedly connected.

Preferably, the back of the valve seat is provided with a groove for installing a metal winding pad, the valve seat is sealed with the valve body through the metal winding pad, and the valve seat compression ring is in threaded connection with the valve body.

The beneficial effects of the utility model are as follows:

1) The valve is not required to be disassembled before purging, so that the cleaning step is simplified, normal purging use is guaranteed, the service life of the valve is prolonged, and long-time reliable operation of the system is guaranteed.

2) When the self-sealing structure is adopted for purging, the valve cover purging pressing plate and the valve seat purging pressing plate are pressed by the fluid pressure, so that the sealing effect is achieved; meanwhile, the problems of uneven stress, fatigue fracture and the like of the bolt connection between the valve cover pull ring and the valve cover sweeping pressing plate are solved.

3) Easy dismounting and maintenance, the dismouting is labour saving and time saving, also can not cause the damage to the valve body, and maintenance utilization ratio is higher.

4) The structure is simple and compact, the purging tool component can be matched with parts of the valve, and the types of the parts are reduced; meanwhile, the requirement on the processing precision of the purging tool component is low, the production cost of the whole product can be saved, and the economic benefit is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

FIG. 2 is a schematic view of a purge tool assembly of the present utility model.

Fig. 3 is a cross-sectional view of fig. 2.

Fig. 4 is a schematic view of the internal structure of the present utility model.

In the figure: 1. valve body 2, metal winding pad 3, valve seat 4, valve seat clamping ring 5, valve seat purging pressing plate 6, purging tool component 7, self-sealing ring 8, self-sealing pressing ring 9, four-way ring 10, valve cover pull ring 11, inlet flow channel 12, outlet flow channel 13, seamless steel pipe 14 and valve cover purging pressing plate.

Detailed Description

The utility model will be further illustrated with reference to specific examples.

The purging tool for the angle welding valve shown in fig. 1-4 comprises a valve body 1, wherein an inlet flow passage 11 for fluid to enter is arranged at the left end in the valve body 1, an outlet flow passage 12 for fluid to flow out is arranged at the lower end in the valve body 1, the inlet flow passage 11 and the outlet flow passage 12 are mutually perpendicular, a valve body cavity is further arranged in the valve body 1, and the valve body cavity is positioned between the inlet flow passage 11 and the outlet flow passage 12.

In one embodiment, a positioning step surface for mounting the valve seat 3 is arranged at the bottom of the cavity of the valve body 1, the movement of the valve seat 3 in the radial direction inside the valve body 1 is restrained, and a groove for mounting the metal winding pad 2 is arranged on the back surface of the valve seat 3, so that the sealing between the valve body 1 and the valve seat 3 is realized.

In one embodiment, the valve seat 3 and the valve body 1 are pressed by the valve seat pressing ring 4, the valve seat pressing ring 4 is in threaded connection with the valve body 1, the valve seat purging pressing plate 5 is arranged on the valve seat 3, and a groove is formed in the back surface of the valve seat purging pressing plate 5 and used for restraining the valve seat purging pressing plate 5 and achieving sealing.

In one embodiment, a purging tool assembly 6 is arranged on the valve seat purging pressing plate 5, the purging tool assembly 6 is formed by coaxially inserting a seamless steel pipe 13 for a high-pressure boiler and a valve cover purging pressing plate 14, and a valve cover pull ring 10 is arranged on the top of the valve body 1.

Specifically, the valve cover purging platen 14 is provided with an inclined bench surface for installing a self-sealing ring and a self-sealing pressing ring, and the self-sealing ring adopts a metal edge-wrapping mode.

In one embodiment, a plurality of through holes are uniformly distributed on the lower pipe wall of the high-pressure seamless steel pipe. The through holes are arranged in different directions, so that the uniform blowing and sweeping of all directions in the cavity is ensured.

Specifically, the through holes are rectangular, and the number of the through holes is four and mutually perpendicular. The air blown out of each through hole is not interfered with each other, and the smooth purging operation is ensured.

In one embodiment, the bonnet tab 10 is provided with a threaded hole and a bolt is directly connected to the threaded hole on the bonnet purge platen 14, thereby securing the bonnet tab 10. A self-sealing ring 7, a self-sealing pressing ring 8 and a four-way ring 9 are sequentially arranged between the valve cover pull ring 10 and the valve cover blowing pressing plate 14.

Specifically, the four open rings are distributed in four blocks and are detached by four holes punched on the side of the valve body.

The working process of the utility model is as follows:

when fluid enters the inner cavity of the valve body from the inlet flow passage 11, the internal pressure enables the valve cover sweeping pressing plate 14 to be pressed upwards and to be pressed by the sealing ring 7 and the self-sealing pressing ring 8, and the four-way ring 9 is limited by the hole position on the side of the valve body 1, so that the sealing effect is achieved, and the valve body is ensured not to leak. The seamless steel pipe 13 for the high-pressure boiler is penetrated out from the guide hole of the valve cover pull ring 10. And four rectangular through holes are uniformly distributed on the wall of the seamless steel pipe 13 for the high-pressure boiler and are mutually perpendicular, when the purging work is carried out, impurities such as rust, dust, welding slag, sediment, sundries and the like remained in the pipeline in the construction process enter the inner cavity of the valve body along with the fluid introduced into the pipeline, and the fluid is blown out from the rectangular holes on the seamless steel pipe 13 for the high-pressure boiler by virtue of the internal pressure, so that the purging and cleaning work is completed.

According to the utility model, the valve is not required to be disassembled before purging, so that the cleaning step is simplified, the normal use of purging is ensured, the service life of the valve is prolonged, and the long-time reliable operation of the system is ensured. When the self-sealing structure is adopted for purging, the valve cover purging pressing plate and the valve seat purging pressing plate are pressed by the fluid pressure, so that the sealing effect is achieved; meanwhile, the problems of uneven stress, fatigue fracture and the like of the bolt connection between the valve cover pull ring and the valve cover sweeping pressing plate are solved.

It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it is understood that various changes and modifications may be made by those skilled in the art after reading the teachings of the present utility model, and such equivalents are intended to fall within the scope of the claims appended hereto.

Claims

1. An angular welding valve purging tool comprises a valve body (1), wherein an inlet flow passage (11) for entering fluid and an outlet flow passage (12) for exiting fluid are arranged in the valve body (1); a valve body cavity is arranged in the valve body (1) corresponding to the space between the inlet runner (11) and the outlet runner (12); the valve seat (3) is arranged at the bottom of the valve body cavity, and is characterized in that a valve seat compression ring (4) for compressing the valve seat (3) and the valve body (1) is arranged on the valve seat (3); a valve seat purging pressing plate (5) is arranged on the valve seat (3); a purging tool assembly (6) is arranged on the valve seat purging pressing plate (5); the purging tool assembly (6) consists of a high-pressure seamless steel pipe (13) and a valve cover purging pressing plate (14); valve body (1) top sets up valve gap pull ring (10), is equipped with seal structure between valve gap pull ring (10) and the valve gap sweeps clamp plate (14), and high-pressure seamless steel pipe (13) are worn out in the center guiding hole of valve gap pull ring (10).

2. The purging tool for the angle welding valve according to claim 1, wherein a plurality of through holes are uniformly distributed on the lower pipe wall of the high-pressure seamless steel pipe (13).

3. The tool for purging the angle welding valve according to claim 2, wherein the through holes are rectangular, four in number and perpendicular to each other.

4. The angular welding valve purging tool according to claim 1, wherein a sealing structure formed by combining a self-sealing ring (7), a self-sealing pressing ring (8) and a four-way ring (9) is sequentially arranged between the valve cover pull ring (10) and the valve cover purging pressing plate (14) from bottom to top.

5. The tool for purging the angle type welding valve according to claim 1, wherein the valve cover purging pressing plate (14) is provided with an inclined step surface for installing a self-sealing ring and a self-sealing pressing ring, and the self-sealing ring adopts a metal edge-wrapping mode.

6. The tool for purging the angle welding valve according to claim 4, wherein the four open loops are distributed in four blocks and are detached by four holes punched on the side of the valve body.

7. The tool for purging the angle welding valve according to claim 1, wherein the valve cover pull ring (10) is provided with a threaded hole, and a bolt is directly connected with the threaded hole on the valve cover purging pressing plate (14), thereby connecting and fixing the valve cover pull ring (10).

8. An angular welding valve purging tool as claimed in claim 1 or 2, characterized in that the back of the valve seat (3) is provided with a groove for mounting a metal winding pad, the valve seat is sealed with the valve body (1) by the metal winding pad, and the valve seat compression ring (4) is in threaded connection with the valve body (1).