阅读说明：本技术 一种高稳定性伴热采样复合管 (High-stability heat tracing sampling composite tube ) 是由 李贻连 于 2021-08-14 设计创作，主要内容包括：本发明涉及一种高稳定性伴热采样复合管,包括采样管和依次设置在采样管外圈的伴热带、保温层和护套层,所述采样管的一端可拆卸的设有密封盖,所述采样管包括固定管和伸缩管；所述固定管的直径大于所述伸缩管的直径,所述固定管一端设有连接口,所述伸缩管一端自连接口套入固定管内；所述伸缩管另一端为自由端,所述自由端可伸出设有密封盖的伴热带端部或缩入伴热带端部。本发明的采用管包括固定管和伸缩管,在需要对复合管进行运输时,将伸缩管缩入固定管内,避免伸缩管内进入脏污,保证了后续的采样精度；在进行安装时,可根据现场需求,调整伸缩管伸出固定管的长度,以适应各种安装场合和安装长度,提高了复合管的适用范围。(The invention relates to a high-stability heat tracing sampling composite tube, which comprises a sampling tube, a heat tracing band, a heat insulating layer and a protective sleeve layer, wherein the heat tracing band, the heat insulating layer and the protective sleeve layer are sequentially arranged on the outer ring of the sampling tube; the diameter of the fixed pipe is larger than that of the telescopic pipe, one end of the fixed pipe is provided with a connecting port, and one end of the telescopic pipe is sleeved into the fixed pipe from the connecting port; the other end of the extension tube is a free end, and the free end can extend out of the end part of the heat tracing band provided with the sealing cover or retract into the end part of the heat tracing band. The adopted pipe comprises the fixed pipe and the telescopic pipe, and when the composite pipe needs to be transported, the telescopic pipe is retracted into the fixed pipe, so that the telescopic pipe is prevented from being polluted, and the subsequent sampling precision is ensured; when the composite pipe is installed, the length of the telescopic pipe extending out of the fixed pipe can be adjusted according to field requirements so as to adapt to various installation occasions and installation lengths, and the application range of the composite pipe is widened.)

1. The high-stability heat tracing sampling composite tube is characterized by comprising a sampling tube, a heat tracing band, a heat preservation layer and a sheath layer, wherein the heat tracing band, the heat preservation layer and the sheath layer are sequentially arranged on the outer ring of the sampling tube;

the diameter of the fixed pipe is larger than that of the telescopic pipe, one end of the fixed pipe is provided with a connecting port, and one end of the telescopic pipe is sleeved into the fixed pipe from the connecting port;

the other end of the extension tube is a free end, and the free end can extend out of the end part of the heat tracing band provided with the sealing cover or retract into the end part of the heat tracing band.

2. The high-stability heat-tracing sampling composite pipe according to claim 1, wherein a spacing ring is provided on the outside of the telescopic pipe extending out of the fixed pipe.

3. The high-stability heat tracing sampling composite pipe according to claim 1, wherein the telescopic pipe is locked with a fixed pipe connecting port through a locking member, the locking member is arranged on the telescopic pipe and can slide back and forth along the telescopic pipe, and the locking member is flush with the end of the heat tracing band.

4. The high-stability heat tracing sampling composite pipe according to claim 2 or 3, wherein the locking member comprises a movable sleeve, the movable sleeve is arranged on the telescopic pipe and can move up and down along the telescopic pipe, an internal thread is arranged on the inner ring of the movable sleeve, and an external thread matched with the movable sleeve is arranged on the outer ring of the connecting port.

5. The high-stability heat tracing sampling composite tube according to claim 4, wherein the outer diameter of the connection port is smaller than that of the fixed tube, and the inner diameter of the movable sleeve is matched with the outer diameter of the connection port.

6. The high-stability heat tracing sampling composite pipe according to claim 3, wherein a fixing sleeve is provided on an outer ring of a junction of the connecting port and the fixing pipe, an elastic sealing sleeve is provided on the fixing sleeve, one end of the elastic sealing sleeve is fixedly connected with the fixing sleeve, the other end of the elastic sealing sleeve is a sealing free end, the sealing free end faces the locking member, and the elastic sealing sleeve covers the locking member and the connecting port after the locking member is connected with the connecting port.

7. The high stability heat tracing sampling composite tube of claim 6, wherein an elastic sealing member is disposed at an end of the movable sleeve facing the fixed sleeve.

8. The high stability heat tracing sampling composite tube of claim 6, wherein the elastic sealing sleeve completely encases the retaining member.

9. The high-stability heat-tracing sampling composite pipe according to any one of claims 1 to 8, wherein a limiting plate is provided at one end of the telescopic pipe sleeved in the fixed pipe, and the diameter of the limiting plate is smaller than the inner diameter of the fixed pipe and larger than the diameter of the fixed pipe connection port.

Technical Field

The invention relates to a composite tube, in particular to a high-stability heat tracing sampling composite tube.

Background

With the development of industry, the pollution of industrial emission is increasingly serious, and the living environment of people is seriously polluted. Environmental protection and detection are not slow enough, and industrial emission pollution is mainly concentrated in areas such as power plants, chemical plants, smelting plants and the like. On-line smoke detection is brought to the end, and the emission of smoke is sampled to analyze whether the emission of smoke can reach the emission standard.

Current flue gas sampling pipe carries the transportation back many times, gets into external foreign matter easily in the air flue, has certain influence to the accuracy of later stage sampling, and the sampling pipe that stretches out easily takes place the phenomenon of bending, influences the use of sampling pipe.

Disclosure of Invention

In order to overcome the defects, the invention provides a high-stability heat tracing sampling composite tube.

The technical scheme adopted by the invention for solving the technical problems is as follows: a high-stability heat tracing sampling composite tube comprises a sampling tube, a heat tracing band, a heat preservation layer and a sheath layer, wherein the heat tracing band, the heat preservation layer and the sheath layer are sequentially arranged on the outer ring of the sampling tube;

the diameter of the fixed pipe is larger than that of the telescopic pipe, one end of the fixed pipe is provided with a connecting port, and one end of the telescopic pipe is sleeved into the fixed pipe from the connecting port;

the other end of the extension tube is a free end, and the free end can extend out of the end part of the heat tracing band provided with the sealing cover or retract into the end part of the heat tracing band.

In one embodiment of the invention, the high-stability heat-tracing sampling composite pipe according to claim 1 is characterized in that a limiting ring is arranged on the outside of the telescopic pipe extending out of the fixed pipe.

In one embodiment of the invention, the telescopic pipe is locked with the fixed pipe connecting port through a locking piece, the locking piece is arranged on the telescopic pipe and can slide back and forth along the telescopic pipe, and the locking piece is flush with the end part of the heat tracing band.

In one embodiment of the invention, the locking member comprises a movable sleeve, the movable sleeve is arranged on the telescopic pipe and can move up and down along the telescopic pipe, an internal thread is arranged on the inner ring of the movable sleeve, and an external thread matched with the movable sleeve is arranged on the outer ring of the connecting port.

In one embodiment of the invention, the outer diameter of the connecting port is smaller than that of the fixed pipe, and the inner diameter of the movable sleeve is matched with the outer diameter of the connecting port.

In one embodiment of the invention, a fixing sleeve is arranged on an outer ring of a joint of the connecting port and the fixing pipe, an elastic sealing sleeve is arranged on the fixing sleeve, one end of the elastic sealing sleeve is fixedly connected with the fixing sleeve, the other end of the elastic sealing sleeve is a sealing free end, the sealing free end faces towards the locking piece, and the elastic sealing sleeve covers the locking piece and the connecting port after the locking piece is connected with the connecting port.

In one embodiment of the invention, the movable sleeve is provided with an elastic sealing element at one end facing the fixed sleeve.

In one embodiment of the invention, the elastic sealing sleeve completely envelops the locking element.

In one embodiment of the invention, one end of the telescopic pipe sleeved in the fixed pipe is provided with a limiting plate, and the diameter of the limiting plate is smaller than the inner diameter of the fixed pipe and larger than the diameter of a connecting port of the fixed pipe.

The invention has the beneficial effects that: the adopted pipe comprises the fixed pipe and the telescopic pipe, when the composite pipe needs to be transported, the telescopic pipe is retracted into the fixed pipe, so that the telescopic pipe is prevented from being polluted and from being bent or damaged in the transportation process, the quality of the sampling pipe is ensured, and the subsequent sampling precision is ensured; when the composite pipe is installed, the length of the telescopic pipe extending out of the fixed pipe can be adjusted according to field requirements so as to adapt to various installation occasions and installation lengths, and the application range of the composite pipe is widened.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a sampling tube according to the present invention;

FIG. 3 is a schematic view of the retaining member of the present invention shown in connection with an attachment port;

FIG. 4 is a first schematic view of the extension tube extending out of the fixing tube according to the present invention;

FIG. 5 is a schematic view of a second structure of the extension tube of the present invention;

in the figure: 100. a sampling tube; 101. a fixed tube; 102. a telescopic pipe; 1021. a limiting plate; 1022. a limiting ring; 103. a connecting port; 200. a heat tracing band; 300. a heat-insulating layer; 400. a sheath layer; 500. a sealing cover; 600. a locking member; 700. fixing a sleeve; 701. an elastic sealing sleeve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1 to 5, the high-stability heat-tracing sampling composite tube comprises a sampling tube 100, a heat tracing band 200, an insulating layer 300 and a sheath layer 400 which are sequentially arranged on the outer ring of the sampling tube 100, wherein one end of the sampling tube 100 is detachably provided with a sealing cover 500, and the sampling tube 100 comprises a fixed tube 101 and a telescopic tube 102;

the diameter of the fixed pipe 101 is larger than that of the telescopic pipe 102, one end of the fixed pipe 101 is provided with a connection 103, and one end of the telescopic pipe 102 is sleeved into the fixed pipe 101 from the connection 103; the other end of the telescopic pipe 102 is a free end, and the free end can extend out of the end part of the heat tracing band provided with the sealing cover or retract into the end part of the heat tracing band.

When the composite pipe is transported, the telescopic pipe can be retracted into the end part of the heat tracing band, and then the sealing cover 500 is covered, specifically, the sealing cover can be a plug which is matched and plugged into the end part of the composite pipe, so that the end part of the composite pipe is sealed, dirt is prevented from entering the composite pipe in the transportation process, the cleanliness of the composite pipe is ensured, the measurement precision of the composite pipe is ensured, the telescopic pipe retracted into the end part of the heat tracing band also effectively prevents the sampling pipe from being bent due to the fact that the sampling pipe extends out of the heat tracing band, and the quality of the sampling pipe is ensured; after the composite pipe is installed in a designated place, the sealing cover is detached, the telescopic pipe is drawn out from the heat tracing band, connection between the composite pipe and other parts is achieved, the length of the telescopic pipe extending out of the heat tracing band can be adjusted according to field use requirements, the composite pipe is suitable for various installation occasions, and adaptability of the composite pipe is improved.

In the application, one end of the extension tube 102 sleeved in the fixed tube 101 is provided with a limiting plate 1021, and the diameter of the limiting plate 1021 is smaller than the inner diameter of the fixed tube 101 and larger than the diameter of a connecting port 103 of the fixed tube 101; after placing the compound pipe to corresponding installation position, take out flexible pipe 102 from fixed pipe 101, because every installation environment and position all are different, therefore the whole length of required sampling pipe is also different, and the length that fixed pipe was taken out to flexible pipe control according to the condition on scene, the setting of limiting plate avoids flexible pipe to be accomplished and takes out fixed pipe, improves the security of the whole use of sampling pipe.

In the transportation process, the telescopic pipe 102 is retracted into the fixed pipe 101, so that the telescopic pipe 102 cannot be forced to extend out of the fixed pipe conveniently in order to avoid the fact that the telescopic pipe 102 is completely retracted into the fixed pipe, and the limiting ring 1022 is arranged outside the telescopic pipe extending out of the fixed pipe.

After the extension tube 102 extends out of the fixed tube 101 by a proper length, the extension tube 102 is locked with the connecting port 103 of the fixed tube 101 through the locking member 600, and the locking member 600 is arranged on the extension tube 102 and can slide back and forth along the extension tube 102; that is to say, the setting of retaining member 600 does not influence the flexible pipe 102 and removes in fixed pipe 101, and retaining member 600 also can remove along flexible pipe 102, is convenient for realize the locking between flexible pipe 102 arbitrary length department and fixed pipe 101, and in order to realize the sealed lid to the sealed of composite pipe end portion, retaining member 600 flushes the setting with the companion's tropical tip.

Specifically, retaining member 600 includes the movable sleeve, and the movable sleeve sets up on flexible pipe 102 and can follow flexible pipe 102 and reciprocate, and the movable sleeve inner circle is equipped with the internal thread, is equipped with the external screw thread that matches with the movable sleeve on the connector outer lane. In order to facilitate the connection between the extension tube 102 and the fixed tube 101, the outer diameter of the connection port 103 is smaller than that of the fixed tube, so that the movable sleeve is sleeved at the connection port and is locked with the connection port 103.

In order to increase the sealing performance between the locking member 600 and the connection port 103 and ensure the sampling effect of the sampling tube, the connection port 103 is connected with the fixed tube and provided with a fixed sleeve 700 on the outer ring. Be equipped with elastic sealing cover 701 on fixed cover 700, elastic sealing cover 701 one end and fixed cover 700 fixed connection, the other end is sealed free end, and sealed free end is towards retaining member 600, and elastic sealing cover 701 cladding is on retaining member 600 and connector 103 after retaining member 600 is connected with connector 103. As a preferable mode, the elastic sealing sleeve 701 completely covers the locking piece, so that the sealing performance of the joint of the fixed tube 101 and the telescopic tube 102 is further ensured, and the sampling tube is ensured not to leak in the using process. The elastic sealing element is arranged at one end of the movable sleeve facing the fixed sleeve, so that the sealing effect between the movable sleeve and the fixed sleeve is realized, and the sealing property at the joint of the telescopic pipe and the fixed pipe is further ensured.

The adopted pipe comprises the fixed pipe and the telescopic pipe, when the composite pipe needs to be transported, the telescopic pipe is retracted into the fixed pipe, so that the telescopic pipe is prevented from being polluted and from being bent or damaged in the transportation process, the quality of the sampling pipe is ensured, and the subsequent sampling precision is ensured; when the composite pipe is installed, the length of the telescopic pipe extending out of the fixed pipe can be adjusted according to field requirements so as to adapt to various installation occasions and installation lengths, and the application range of the composite pipe is widened.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.