A kind of valve heat tracing dismountable flange set group device
Technical field
The utility model relates to chemical industry heat tracing pipe installation technology field more particularly to a kind of detachable methods of valve heat tracing
Blue set group device.
Background technique
Currently, chemical medium pipeline since medium freezing point is higher, is all made of the auxiliary heat preservation of high-temperature steam heat tracing pipeline.
Heat tracing pipeline especially valve heat tracing pipeline is the difficult point of maintenance, and valve heat tracing pipe generallys use loose joint connection, when for overhauling
Disassembly.Loose joint is sealed using raw material band or gasket, due to generating vibration when valve passes through medium in production process, so loose joint
Steam leaks frequent occurrence, not only wastes steam energy, also easily causes temperature in valve inadequate, high-temperature medium solidification rate height etc.
Defect.Common processing method is disassembly loose joint, re-replaces gasket or raw material band, but steam can still occur after a period of time
Leakage, it is palliative.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of valve heat tracing dismountable flange set group
Device.It can effectively reinforce sealing, avoid steam leakage.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of valve heat tracing dismountable flange set group device, including it is silk head, first flange, second flange, gasket, curved
Head, short tube;The silk head is that tubular structure one end is equipped with external screw thread, and external screw thread is adapted to valve heat tracing mouth internal screw thread, and silk is first
End is connected by screw thread with valve heat tracing mouth, and the silk head other end is connected with first flange;First flange and second flange pass through spiral shell
It tethers and connects, gasket pad is between first flange and second flange;Second flange is connected with one end of elbow, the other end of elbow with
Short tube is connected, and the other end of short tube is connected with heat traced pipeline.
The first flange and second flange are pairs of slip-on-welding plate flange, and sealing surface is convex surface.
The gasket is SW with outside ring, material 1222.
Compared with prior art, the utility model has the beneficial effects that
The utility model is equipped with SW with outside ring by flanged joint valve heat tracing pipe, can effectively reinforce
Sealing generates the steam leakage caused by vibration, saves steam resource, guarantee the temperature in valve when avoiding passing through because of valve medium
Degree.
Detailed description of the invention
Fig. 1 is the utility model structural representation front sectional view;
In figure: 1- head 2- first flange 3- second flange 4- gasket 5- elbow 6- short tube 7- valve heat tracing mouth 8-
Heat traced pipeline
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
As shown in Figure 1, a kind of valve heat tracing dismountable flange set group device, including silk head 1, first flange 2, the second method
Blue 3, gasket 4, elbow 5, short tube 6.
Silk head 1 is made of seamless steel pipe, one end threading of silk head 1, external screw thread and 7 internal screw thread of valve heat tracing mouth
Adaptation, 1 one end of silk head are connected by screw thread with valve heat tracing mouth 7, and the screwed one end of silk head 1 is screwed into valve heat tracing mouth 7, and
It screws.Silk 1 other end of head and first flange 2 are welded.
First flange 2 and second flange 3 are pairs of PL (B) type RF flange, this flange is chemical pipeline class special flange.
Gasket 4 uses SW with outside ring, and material 1222, high temperature resistant, corrosion-resistant, leakproofness is good.First flange 2 and second flange
3 are bolted, and gasket 4 pads between first flange 2 and second flange 3.
Elbow 5 is 90 degree seamless elbows, and short tube 6 is seamless steel pipe, and 5 one end of elbow and second flange 3 are welded, the other end and
Short tube 6 welds, and the other end and heat traced pipeline 8 of short tube 6 weld.
The utility model is equipped with SW with outside ring by first flange 2 and 3 connecting valve heat tracing pipe of second flange
4, it can effectively reinforce sealing, steam is avoided to leak, save steam resource, guarantee the temperature in valve.
Above embodiments are implemented under premised on technical solutions of the utility model, give detailed embodiment
With specific operating process, but the protection scope of the utility model is not limited to the above embodiments.Side used in above-described embodiment
Method is conventional method unless otherwise instructed.