CN207358973U - Valve packing fills tool of returning to work - Google Patents

Abstract

The utility model discloses a kind of valve packing to fill return to work tool, including body and steel loop, and the body is cylindrical, and body is made of polytetrafluoroethylene (PTFE), and body one end is pressed end, and other end outer wall offers annular groove, and the steel loop is socketed with annular groove.During valve packing multiple using the instrument dress of the structure, it can be ensured that each packing is pressed into place, it is therefore prevented that the presence of the empty phenomenon of packing pressure, while solve the problems, such as that maintenance cost is high, time-consuming, it is ensured that equipment long-term safety, reliable, smoothly operation.

Description

Valve Packing Restoration Tool

technical field

The utility model relates to the field of installation tools, in particular to a valve packing restoration tool.

Background technique

Thermal power plants burn water into steam, and the steam drives the rotor to rotate to generate electricity, which inevitably requires a large amount of water, which results in the extensive use of large valves. The pressure of the 300MW water supply system can reach up to 19MPa. Most of the valves have flow diameter DN300. The packing is relatively brittle, and the use of non-special tools will cause the graphite ring to not enter evenly or cause the surface of the graphite ring to be damaged; use the packing gland to reinstall, because the length of the gland is not enough, each packing cannot be pressed in place, which will cause The packing cannot be compacted and compacted, which will bring hidden dangers to the system.

Utility model content

In view of this, the purpose of this utility model is to provide a valve packing reinstallation tool to solve the problem that the graphite ring packing is not pressed in place, prevent the existence of packing voids, and at the same time solve the problem of high maintenance cost and long time consumption. problems to meet the long-term safety, reliability and smooth operation requirements of the equipment.

The utility model solves the above problems through the following technical means: a valve packing reinstallation tool, including a body and a steel ring, the body is cylindrical, the body is made of polytetrafluoroethylene, and one end of the body is an extruded end. The outer wall of the other end is provided with an annular groove, and the steel ring is socketed with the annular groove.

Further, the body is in the shape of a stepped cylinder.

Further, the steel ring is made of No. 45 steel.

In addition, an airbag ring can be installed at the extrusion end of the body. During the process of compressing the valve packing, the airbag ring is in contact with the packing. On the one hand, the airbag ring and the packing are in soft contact to avoid damage to the packing. , after the packing is pressed, in the process of gradually separating the airbag ring from the packing, under the pressure of the gas in the airbag ring, the packing will not lose the extrusion force instantly, avoiding the springback of the packing, and further ensuring that the packing Compress, compact. Compression springs can also be arranged in the airbag ring, and the spring back of the packing can be avoided by the elastic force of the compression springs.

Beneficial effects of the present utility model: the utility model valve packing reinstallation tool includes a body and a steel ring, the body is cylindrical, the body is made of polytetrafluoroethylene, one end of the body is an extrusion end, The outer wall is provided with an annular groove, and the steel ring is socketed with the annular groove. When using the tool of this structure to reinstall the valve packing, it has the following advantages: 1) It can ensure that each packing is pressed in place, preventing the existence of packing voids, ensuring that the packing is compacted and compacted, and ensuring The long-term safe, reliable and stable operation of the equipment reduces the maintenance cost; 2) The tool is mainly made of PTFE, which is not only low in cost, but also PTFE is soft and does not adhere to the graphite ring packing; 3) Through the The tool compresses the packing, which improves the work efficiency, ensures that each packing can be compacted, and improves the safety of the equipment.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is another structural schematic diagram of the utility model.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings, as shown in Figure 1-2: the utility model provides a valve packing restoration tool, including a body 1 and a steel ring 2, the body is cylindrical, The body is made of polytetrafluoroethylene, one end of the body is the extrusion end 3, and the outer wall of the other end is provided with an annular groove, and the steel ring is socketed with the annular groove. Specifically, the body is in the shape of a stepped cylinder, and the steel ring The ring is made of No. 45 steel. The steel ring is used to increase the overall weight of the tool, so that the tool has a certain weight. If the tool is too light, the packing of the graphite ring will not fall in place. If the tool is too heavy, the packing of the graphite ring will out of shape. When in use, the body and the valve stem are socketed, and each packing can be pressed tightly through the extrusion end. When the tool of this structure is used to reinstall the valve packing, it has the following advantages: 1) It can ensure that each packing is pressed in place, preventing the existence of packing voids, ensuring that the packing is compacted and compacted, and ensuring The long-term safe, reliable and stable operation of the equipment reduces the maintenance cost; 2) The tool is mainly made of PTFE, which is not only low in cost, but also PTFE is soft and does not adhere to the graphite ring packing; 3) Through the The tool compresses the packing, which improves the work efficiency, ensures that each packing can be compacted, and improves the safety of the equipment.

In addition, an airbag ring 4 can be installed at the extrusion end of the body. During the process of compressing the valve packing, the airbag ring contacts the packing. On the one hand, the airbag ring and the packing are in soft contact to avoid damage to the packing. On the one hand, after the packing is pressed, the packing will not lose the extrusion force instantly under the pressure of the gas in the air bag ring during the process of gradually separating the air bag ring from the packing, which avoids the spring back of the packing and further ensures the packing The roots are compacted and compacted. A compression spring 5 can also be arranged in the air bag ring, and the spring force of the compression spring can prevent the packing from springing back.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (5)

1. The tool 1. a kind of valve packing dress is returned to work, it is characterised in that：Including body and steel loop, the body is cylindrical, body by Polytetrafluoroethylene (PTFE) is made, and body one end is pressed end, and other end outer wall offers annular groove, and the steel loop is socketed with annular groove.
2. The tool 2. valve packing dress according to claim 1 is returned to work, it is characterised in that：The body is in ladder circle tubular.
3. The tool 3. the valve packing dress according to claim 1-2 any one is returned to work, it is characterised in that：The steel loop is by No. 45 Steel is made.
4. The tool 4. valve packing dress according to claim 1 is returned to work, it is characterised in that：Pressed end is provided with air pocket rings.
5. The tool 5. valve packing dress according to claim 4 is returned to work, it is characterised in that：Compression spring is provided with the air pocket rings.