CN210266412U

CN210266412U - Heat tracing pipeline for sampling

Info

Publication number: CN210266412U
Application number: CN201921008520.1U
Authority: CN
Inventors: 祁海峰
Original assignee: Beijing Chengyinhe Wire And Cable Factory
Current assignee: Beijing Chengyinhe Wire And Cable Factory
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-04-07
Anticipated expiration: 2029-07-01

Abstract

The utility model relates to a heat tracing pipeline of sampling usefulness, including elastic isolation cover, first heat preservation, second heat preservation, the outer wall bottom of sampling pipe is fixed with a plurality of buffer unit along the equidistant range of sampling pipe length direction, cladding one deck metal heat-conducting layer on the outer wall of sampling pipe, the electric tracing area spiral winding is in on the metal heat-conducting layer is outside, just the electric tracing area passes a plurality of buffer unit in proper order at the winding in-process, the elastic isolation cover is located between first heat preservation and the second heat preservation, the sheath cladding in the outside of second heat preservation. The utility model discloses set up first heat preservation and second heat preservation and set up the elasticity isolation sleeve between it, blocked heat transfer, reduced heat transfer's speed, the heat preservation effect is better, sets up buffer assembly simultaneously, when making electric tracing band receive the pulling force, self length can finely tune, has reduced and has exerted the pulling force on electric tracing band.

Description

Heat tracing pipeline for sampling

Technical Field

The utility model relates to a heat tracing pipeline technical field, concretely relates to heat tracing pipeline of sampling usefulness.

Background

In the online sampling system, gas is extracted by a sampling head and then is sent to a detection instrument for monitoring through a sampling pipe accompanied by heat of a heat tracing band. The heat tracing pipe can ensure that the sample gas does not condense, and the authenticity of the components is ensured.

At present, the heat tracing band generally adopts a constant-power electric heating element. The conventional heat tracing pipeline has a structure that a heat tracing band and a sample gas pipe are directly attached together, the temperature of one side of the sample gas pipe, which is in contact with the heat tracing band, is higher than that of the other side of the sample gas pipe through the heat tracing band, so that the temperature on the cross section of the sample gas pipe is uneven, the temperature of the sample gas in the sample gas pipe cannot completely reach the required temperature, partial gas is easy to condense, and the authenticity of detection is influenced; therefore, the electric tracing band is spirally wound on the sampling tube, so that the electric tracing band is not bent when being coated by the heat insulation material, no gap exists between the electric tracing band and the sampling tube, the electric tracing band is completely in a contact state, and the existing sampling tube has the phenomena of thermal expansion and cold contraction; meanwhile, the existing heat tracing pipelines all adopt a layer of heat insulation material, so that the heat exchange with the outside is relatively large, and the energy consumption loss is large.

SUMMERY OF THE UTILITY MODEL

For solving the problem that prior art exists, the utility model provides a heat tracing pipeline of sampling usefulness not only sets up two-layer heat preservation, separate through the elastic separation cover between first heat preservation and the second heat preservation moreover, block heat transfer, the speed of heat transfer has been reduced, the heat preservation effect is better, set up buffer assembly simultaneously, when making electric tracing band receive the pulling force, under buffer assembly's buffering, self length can finely tune, reduced the pulling force of applying on electric tracing band, and service life is prolonged.

In order to achieve the above object, the utility model adopts the following technical scheme:

a heat tracing pipeline for sampling comprises a sheath, an electric tracing band and a sampling pipe, wherein the sampling pipe and the electric tracing band are arranged in the sheath, the heat tracing pipeline also comprises an elastic isolation sleeve, a first heat-insulating layer and a second heat-insulating layer, a plurality of buffer components which are arranged at equal intervals along the length direction of the sampling pipe are fixed at the bottom of the outer wall of the sampling pipe, the outer wall of the sampling tube is coated with a layer of metal heat conduction layer, the electric tracing band is spirally wound on the outer part of the metal heat conduction layer, the electric tracing band sequentially passes through the plurality of buffer components in the winding process, the elastic isolation sleeve is sleeved between the first heat preservation layer and the second heat preservation layer, the first heat-insulating layer is coated on the outer sides of the sampling pipe and the electric tracing band, the sheath is coated on the outer side of the second heat-insulating layer, elastic isolation cover includes cylinder, two elastic sleeve that cup joint, two realize fixed connection through a plurality of cylinders between the elastic sleeve.

Preferably, the buffer component comprises a buffer block, the buffer block is fixedly connected with the bottom of the outer wall of the sampling pipe, a through hole matched with the electric tracing band is formed in the buffer block along the radial direction of the sampling pipe, and the electric tracing band penetrates through the through hole and is wound outside the metal heat conduction layer.

In any of the above aspects, preferably, the top wall of the through hole has an arc structure protruding outward.

In any of the above embodiments, preferably, a through hole is opened in a top wall of the through hole.

In any of the above schemes, preferably, the cylinder, the elastic sleeve and the buffer block are all made of high temperature resistant rubber materials.

In any of the above embodiments, preferably, a layer of aluminum foil is attached to the inner wall of the sampling tube.

In any of the above embodiments, preferably, the metal thermal conductive layer is a copper foil.

In any of the above schemes, preferably, the first heat insulating layer and the second heat insulating layer are both made of glass fiber heat insulating materials.

Compared with the prior art, the utility model provides a heat tracing pipeline of sampling usefulness has following beneficial effect:

1. the heat insulation effect is improved by arranging the first heat insulation layer and the second heat insulation layer, the first heat insulation layer and the second heat insulation layer are separated by arranging the elastic isolation sleeve, heat transfer is blocked, the speed of heat transfer with the outside is reduced, the heat insulation effect is better, energy consumption loss is reduced, meanwhile, the elastic isolation sleeve has elasticity, can be bent randomly along with the heat tracing pipeline without being damaged, the service life of the elastic isolation sleeve is ensured, certain pressure resistance is realized, the whole heat tracing pipeline is protected, and the damage of a sampling pipe and an electric tracing pipeline caused by extrusion is avoided;

2. the buffer blocks are arranged at the bottom of the sampling pipe, and penetrate through the buffer blocks in the winding process of the electric tracing band, and have certain elasticity, so that when the electric tracing band is pulled, the buffer blocks are extruded, the fine adjustment function of the length of the electric tracing band is realized, the pulling force applied to the electric tracing band is reduced, the damage caused by overlarge pulling force is avoided, the service life of the electric tracing band is prolonged, and the buffer blocks are provided with a plurality of through holes, so that the elasticity of the buffer blocks is improved;

3. the top wall of the through hole is designed to be an arc-shaped structure, so that the electric tracing band can be bent in the winding process.

Drawings

Fig. 1 is a schematic overall structure diagram of a preferred embodiment of a heat tracing pipeline for sampling according to the present invention.

The figures are labeled as follows: 1. a sheath; 2. a second insulating layer; 3. a cylinder; 4. an elastic spacer sleeve; 5. a metal heat conducting layer; 6. a sampling tube; 7. an electric tracing band; 8. a buffer block; 9. a through hole; 10. a first insulating layer; 11. aluminum foil.

Detailed Description

In order to further understand the inventive content of the present invention, the present invention will be explained in detail with reference to the specific embodiments.

As shown in fig. 1, according to an embodiment of the heat tracing pipeline for sampling provided by the present invention, the heat tracing pipeline comprises a sheath 1, an electric tracing band 7, a sampling tube 6, wherein the sampling tube 6 and the electric tracing band 7 are disposed in the sheath 1, the heat tracing pipeline further comprises an elastic isolation sleeve 4, a first heat-insulating layer 10 and a second heat-insulating layer 2, a plurality of buffer components are fixed at the bottom of the outer wall of the sampling tube 6, the buffer components are arranged at equal intervals along the length direction of the sampling tube 6, a metal heat-conducting layer 5 is coated on the outer wall of the sampling tube 6, the electric tracing band 7 is spirally wound on the outside of the metal heat-conducting layer 5, the electric tracing band 7 sequentially passes through the plurality of buffer components in the winding process, the elastic isolation sleeve 4 is disposed between the first heat-insulating layer 10 and the second heat-insulating layer 2, the first heat-insulating layer 10 is coated on the outer side of the sampling tube 6 and the electric tracing band 7, the sheath, elastic isolation cover 4 includes cylinder 3, two elastic sleeve that cup joint, two realize fixed connection through a plurality of cylinders 3 between the elastic sleeve. Through the two-layer heat preservation setting of first heat preservation 10 and second heat preservation 2, the holistic heat preservation effect of heat tracing pipeline has been improved, set up elastic isolation sleeve 4 between first heat preservation 10 and second heat preservation 2, not only can separate first heat preservation 10 and second heat preservation 2, make sheath 1 and sampling pipe 6, electric heat tracing band 7 separates, avoid making the temperature in the 1 external world of sheath and the inside temperature of first heat preservation 10 transmit mutually, the heat preservation effect has been improved, energy loss has been reduced, and elastic isolation sleeve 4 has elasticity, when avoiding heat tracing pipeline to take place the bending, elastic isolation sleeve 4 damages, play the guard action.

Buffer unit includes buffer block 8, buffer block 8 with the bottom fixed connection of sampling pipe 6 outer wall, buffer block 8 is gone up and is seted up along sampling pipe 6's radial direction with electric tracing band 7 complex through hole 9, electric tracing band 7 passes through hole 9 and twines in metal heat-conducting layer 5 outside. The top wall of the through hole 9 is of an arc structure protruding outwards. And a through hole is formed in the top wall of the through hole 9. Through the setting of the buffer block 8, not only play a fixed role to the electric tracing band 7, and make the electric tracing band 7 be in the relaxed state for the sampling pipe 6, when the heat tracing pipeline takes place to buckle or sampling pipe 6 self expend with heat and contract with cold, the electric tracing band 7 can stretch out and draw back freely through extrusion buffer block 8 when receiving the pulling force, prevent because of the heat tracing pipeline takes place to buckle, the electric tracing band 7 is damaged because of winding tension and the space is little makes it can't freely stretch out and draw back, play the guard action to the electric tracing band 7, the life of electric tracing band 7 has been prolonged.

The cylinder 3, the elastic sleeve and the buffer block 8 are all made of high-temperature resistant rubber materials.

And a layer of aluminum foil 11 is attached to the inner wall of the sampling tube 6.

The metal heat conduction layer 5 is a copper foil, so that heat conduction is more uniform.

The first heat-insulating layer 10 and the second heat-insulating layer 2 are both made of glass fiber heat-insulating materials.

The working principle of the embodiment is as follows: the electric tracing band is spirally wound on the sampling tube, sequentially passes through the through holes on the plurality of buffer blocks in the winding process, and then sequentially coats the first heat-insulating layer, the elastic isolation sleeve, the second heat-insulating layer and the protective sleeve.

Compared with the prior art, the embodiment has the following beneficial effects:

through the setting of first heat preservation and second heat preservation, the heat preservation effect has been improved, and separate through setting up the elastic isolation cover between first heat preservation and second heat preservation, block heat transfer, the speed with external heat transfer has been reduced, make the heat preservation effect better, the energy consumption loss has been reduced, elastic isolation cover has elasticity simultaneously, can follow the arbitrary bending of heat tracing pipeline and not damage, the life of elastic isolation cover has been guaranteed, certain resistance to compression also has, play the guard action to heat tracing pipeline wholly, avoid the sampling pipe, the electric heat tracing area damages because of receiving the extrusion.

It will be understood by those skilled in the art that any combination of the elements of the present invention, including the summary and detailed description of the invention provided in the foregoing description and illustrated in the accompanying drawings, is not to be considered limiting in scope and in order to make the description more concise, and not to describe every element of the combination. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a heat tracing pipeline of sampling usefulness, includes sheath, electric tracing area, sampling pipe and electric tracing area are located in the sheath, its characterized in that: still include elastic isolation cover, first heat preservation, second heat preservation, the outer wall bottom of sampling pipe is fixed with a plurality of buffer unit who arranges along sampling pipe length direction equidistance, cladding one deck metal heat-conducting layer on the outer wall of sampling pipe, electric tracing band spiral winding is in on the metal heat-conducting layer is outside, just electric tracing band passes a plurality of buffer unit in winding in-process in proper order, the elastic isolation cover is located between first heat preservation and the second heat preservation, the cladding of first heat preservation is in the sampling pipe and the electric tracing band outside, the sheath cladding in the outside of second heat preservation, the elastic isolation cover includes cylinder, two elastic sleeve that cup joint, two realize fixed connection through a plurality of cylinders between the elastic sleeve.

2. Heat trace line for sampling according to claim 1, characterized in that: the buffer assembly comprises a buffer block, the buffer block is fixedly connected with the bottom of the outer wall of the sampling pipe, a through hole matched with the electric tracing band is formed in the buffer block in the radial direction of the sampling pipe, and the electric tracing band penetrates through the through hole to be wound outside the metal heat conduction layer.

3. Heat trace line for sampling according to claim 2, characterized in that: the top wall of the through hole is of an arc-shaped structure protruding outwards.

4. A heat trace line for sampling according to claim 3, wherein: and the top wall of the through hole is provided with a through hole.

5. Heat trace line for sampling according to claim 1, characterized in that: the cylinder, the elastic sleeve and the buffer block are all made of high-temperature-resistant rubber materials.

6. Heat trace line for sampling according to claim 1, characterized in that: and a layer of aluminum foil is attached to the inner wall of the sampling tube.

7. Heat trace line for sampling according to claim 1, characterized in that: the metal heat conduction layer is a copper foil.

8. Heat trace pipeline for sampling according to any of claims 1-7, characterized in that: the first heat-insulating layer and the second heat-insulating layer are both made of glass fiber heat-insulating materials.