CN212273726U - Leak gas detection device and heat preservation pipe - Google Patents

Abstract

The utility model provides a gas leakage detection device and insulating tube, wherein, a gas leakage detection device, include: the insulation sleeve is arranged between the pipeline and the insulation sleeve, the insulation sleeve is sleeved outside the pipeline, the two ends of the insulation sleeve are axially connected with the pipeline in a sealing mode, the first end of the outgoing pipe is communicated with the insulation sleeve, the second end of the outgoing pipe is connected with the detection assembly, and the detection assembly is used for detecting whether gas to be detected exists in the outgoing pipe or not and outputting a detection signal. The utility model provides a gaseous detection device leaks has avoided demolising the process that the insulation equipment was prevented in winter to but the personal safety is ensured to gaseous leakage position of snap judgments, while reuse.

Description

Leak gas detection device and heat preservation pipe

Technical Field

The utility model relates to a pipeline transportation field especially relates to a gas leakage detection device and insulating tube.

Background

Pipeline transportation is the most economical and reasonable transportation mode for petroleum transportation. In winter, the external temperature is low, the crude oil exchanges heat with the outside in the flowing process, most heat in the crude oil is lost, the temperature of the crude oil is continuously reduced, the crude oil is waxed on the pipe wall, and the crude oil is not smooth to flow.

In order to maintain the normal flow of crude oil under low temperature conditions, a thermal insulation material is often arranged outside a pipeline to reduce the loss of heat of crude oil in the pipeline; or a heating device is arranged to provide heat energy for the crude oil so as to offset the heat lost by the crude oil and maintain the temperature of the crude oil.

In the prior art, toxic gases such as gas leak in the process of conveying crude oil. In winter, due to the fact that the heat insulation material wrapped outside the pipeline influences judgment of construction personnel on the leakage point, the construction personnel cannot find the leakage point in time, time for handling accidents is prolonged, and energy waste is caused.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a gas leakage detection device and insulating tube for solve the constructor and can not in time discover the leakage point, the time of handling the accident is long, causes the problem of the waste of the energy.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an aspect of the embodiment of the utility model provides a gas leakage detection device for install on the insulating tube, the insulating tube includes that pipeline and cover establish the outer insulation cover of pipeline, gas detection device includes: the insulation sleeve is arranged between the pipeline and the insulation sleeve, the insulation sleeve is sleeved outside the pipeline, the two ends of the insulation sleeve are axially connected with the pipeline in a sealing mode, the first end of the outgoing pipe is communicated with the insulation sleeve, the second end of the outgoing pipe is connected with the detection assembly, and the detection assembly is used for detecting whether gas to be detected exists in the outgoing pipe or not and outputting a detection signal.

In one possible implementation manner, the method further includes: the control assembly is connected with the detection assembly and used for receiving the detection signal to output a control signal; and the prompting component is connected to the control component and used for starting or closing a prompting function according to the control signal.

In one possible implementation manner, a first sealing element is arranged between the isolation sleeve and the pipeline, and the first sealing element is in interference fit with the inner wall of the isolation sleeve and the outer wall of the pipeline.

In one possible implementation manner, the isolation sleeve includes a first spacer sleeve and a second spacer sleeve, the first spacer sleeve is detachably connected to the second spacer sleeve, and the first spacer sleeve and the second spacer sleeve are connected in a sealing manner.

In one possible implementation manner, a threaded rod penetrates through the first spacer and the second spacer, two ends of the threaded rod respectively penetrate through the first spacer and the second spacer, two ends of the threaded rod are respectively in threaded connection with two nuts, and the nuts are tightly abutted against the first spacer or the second spacer.

In one possible implementation manner, a second sealing element is arranged between the first spacer and the second spacer, and the second sealing element is in interference fit with the first spacer and the second spacer.

In one possible implementation manner, a lead-out valve is arranged on the lead-out pipe, and the lead-out valve is used for manually releasing gas in the lead-out pipe.

In one possible implementation manner, a safety valve is arranged on the delivery pipe, the safety valve is preset with a safety pressure threshold value, and the safety valve is used for automatically releasing gas in the delivery pipe.

The utility model provides an insulating tube, includes first pipeline, connects in the male joint of first pipeline one end, second pipeline, connects in the female joint of second pipeline one end and overlaps the insulation cover of establishing outside first pipeline, second pipeline, male joint and female joint cooperation are connected, still include as above arbitrary the gaseous detection device of leakage, the isolation ways cover is located the male joint with the cooperation junction of female joint, the first end of isolation covers with first pipeline sealing connection, the second end of isolation covers with second pipeline sealing connection.

In one possible implementation manner, the thermal insulation sleeve comprises a heating belt, a felt layer and a glass fiber cloth layer.

The utility model provides a gaseous detection device of leakage and insulating tube sets up the spacer sleeve, contact tube and determine module, through spacer sleeve and pipeline outer wall sealing connection, the gas that comes out from the pipeline is arranged in the accommodation space that spacer sleeve and pipeline outer wall formed, and guide gas to determine module through the contact tube, make determine module detect gaseous whether leak, thereby the manual work need not demolish the heat preservation, also can know gaseous whether leak, be favorable to the short-term test, shorten the repair time, maintenance efficiency is high.

In addition to the technical problems, technical features constituting technical aspects, and advantageous effects brought by the technical features of the technical aspects described above, other technical problems, technical features included in technical aspects, and advantageous effects brought by the technical features that can be solved by the embodiments of the present invention will be described in further detail in the detailed description.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a partial cross-sectional view in an axial direction of a leaking gas detecting apparatus and a thermal insulating pipe provided according to an exemplary embodiment;

FIG. 2 is a partial cross-sectional view in the axial direction of another leak gas detection apparatus and a retention tube provided in accordance with an exemplary embodiment;

FIG. 3 is a schematic signal transmission diagram of a leak gas detection apparatus and a thermal insulating tube provided in accordance with an exemplary embodiment;

FIG. 4 is a schematic electrical circuit diagram of a leaking gas detecting apparatus provided in accordance with an exemplary embodiment;

FIG. 5 is a transverse cross-sectional view of a leak gas detection apparatus and insulating tube provided in accordance with an exemplary embodiment;

FIG. 6 is a partial cross-sectional view of a connection of a first cup and a second cup of a leaking gas detection apparatus provided in accordance with an exemplary embodiment;

FIG. 7 is a partial cross-sectional view in the axial direction of yet another leak gas detection apparatus and a thermal insulating tube provided in accordance with an exemplary embodiment.

Description of reference numerals:

1-an isolation sleeve; 11-a first spacer; 12-a second spacer; 13-a first seal; 14-a second seal; 15-threaded rod; 16-a nut; 2-a delivery pipe; 3-a detection component; 31-a concentration detection circuit; 32-concentration comparison circuit; 4-a control component; 5-a prompt component; 6-a lead-out valve; 7-a safety valve; 8-a pipeline; 81-a first conduit; 82-a male connector; 83-a second conduit; 84-a female connector; 9-insulating sleeve; 91-heating a belt; 92-a felt layer; 93-glass fiber cloth layer.

With the above figures, certain embodiments of the present invention have been shown and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Fig. 1 and 2 are sectional views of an exemplary leakage gas detection device and a thermal insulation pipe along an axial direction, and referring to fig. 1 to 2, the present embodiment provides a leakage gas detection device for being mounted on a thermal insulation pipe, the thermal insulation pipe includes a pipe 8 and a thermal insulation sleeve 9 sleeved outside the pipe 8, the gas detection device includes: spacer sleeve 1, contact tube 2 and determine module 3, spacer sleeve 1 is located between pipeline 8 and the insulation cover 9, and 1 covers of spacer sleeve is established in the pipeline 8 outside and 1 axial both ends of spacer sleeve and pipeline 8 sealing connection, and the first end of contact tube 2 communicates in spacer sleeve 1, and the second end of contact tube 2 is connected with determine module 3, and determine module 3 is used for detecting whether exist in the contact tube 2 and wait to detect gas and output detected signal.

Specifically, the axis of the isolation sleeve 1 is parallel to or coincident with the axis of the pipeline 8, a gap is formed between the outer walls of the isolation sleeve 1 and the pipeline 8, and the outer walls of the isolation sleeve 1 and the pipeline 8 form an accommodating space. So that the gas leaking in the duct 8 is located in the accommodation space without diffusion. For example, as shown in fig. 1, the radius of each section of the insulating sleeve 1 in the axial direction thereof may be equal; for another example, as shown in fig. 2, the section radius at the two ends of the isolation sleeve 1 in the axial direction is small, the section radius at the middle position of the isolation sleeve 1 is large, and the accommodation space surrounded by the isolation sleeve 1 and the pipeline 8 can accommodate more gas, so that the gas can be stored when an operator does not timely treat the gas.

Specifically, the first end of the delivery pipe 2 is communicated with the accommodating space, the isolation sleeve 1 is provided with a through hole, and the first end of the delivery pipe 2 is hermetically connected with the through hole. Optionally, the means of sealing between the delivery tube 2 and the through-hole include, but are not limited to, sealing, screwing, welding, gluing. The sealing element can be a sealing ring exemplarily, and the sealing ring is fixed on the outer side of the first end of the delivery pipe 2 or the inner wall of the through hole, so that the sealing ring is in interference fit with the through hole or the delivery pipe 2 is in interference fit with the sealing ring, and the sealing effect is further realized; as another example, the first end of the delivery tube 2 is provided with an external thread, and the inner wall of the through hole is provided with an internal thread, and the external thread is screwed with the internal thread.

Alternatively, the second end of the delivery tube 2 may be in a closed arrangement; the second end of the delivery pipe 2 can also be provided with a valve which can control the opening and closing of the delivery pipe 2. When the delivery pipe 2 works, the delivery pipe 2 is in a closed state, so that the leaked gas is stored in the accommodating space and/or the delivery pipe 2.

Specifically, the detection assembly 3 is installed at one end of the delivery pipe 2 far away from the isolation sleeve 1. The detection component 3 is electrically connected with an external power supply.

The utility model provides a gaseous detection device leaks, set up the separation sleeve 1, contact tube 2 and determine module 3, through separation sleeve 1 and 8 outer wall sealing connection of pipeline, the gas that comes out from pipeline 8 is arranged in the accommodation space that separation sleeve 1 and 8 outer walls of pipeline formed, and guide gaseous to determine module 3 through contact tube 2, make determine module 3 detect gaseous whether to leak, thereby the manual work need not demolish the heat preservation, also can know gaseous whether to leak, be favorable to the short-term test, shorten the repair time, maintenance efficiency is high.

Fig. 3 is a schematic signal transmission diagram of a leaking gas detecting apparatus according to an exemplary embodiment, and as shown in fig. 3, the leaking gas detecting apparatus further includes a control module 4 connected to the detecting module 3 for receiving a detection signal and outputting a control signal; and the prompting component 5 is connected to the control component 4 and used for starting or closing a prompting function according to the control signal.

Specifically, the detection module 3 includes a density detection circuit 31 and a density comparison circuit 32. A concentration detection circuit 31 for detecting the concentration of the gas in the delivery tube 2 and outputting a concentration detection signal; and a density comparison circuit 32 which is preset with a density reference value signal and is connected with the density detection circuit 31 to compare the density detection signal and the density reference value signal with each other and output a cabinet door detection signal.

Alternatively, fig. 4 is a schematic circuit diagram of a leaking gas detecting apparatus provided according to an exemplary embodiment; as shown in fig. 4, the concentration detection circuit 31 may include a first resistor R1 and a gas-sensitive resistor R2 connected in series in the power supply circuit, wherein the other end of the first resistor R1 is connected to the VCC voltage, the other end of the gas-sensitive resistor R2 is grounded, and a connection node between the first resistor R1 and the gas-sensitive resistor R2 outputs a concentration detection signal to the concentration comparison circuit 32.

It is worth to be noted that the gas sensor R2 is an N-type semiconductor element with low power consumption and high sensitivity, and has a heating wire and a pair of detecting electrodes inside, and two ends of the gas sensor R2 are respectively indicated by the letters A, B; when the air does not contain the gas to be detected or the concentration of the gas to be detected is very low, the resistance between the two ends AB of the gas sensitive resistor R2 is very large, the current flowing out is very small, and the fifth resistor is used for limiting the current; the end A of the gas-sensitive resistor R2 and one end of the heating wire are connected with the positive electrode of the power supply, the other end of the heating wire is grounded, and the end B of the gas-sensitive resistor R2 is an output end. The sensitivity adjusting circuit consists of a first resistor R1 and a diode D, the first resistor R1 can be a slide rheostat, the sensitivity of the alarm can be adjusted by adjusting the first resistor R1, and the diode D is used for reducing voltage and conducting in a single direction; one end and the adjusting end of the first resistor R1 are connected with the end B of the gas-sensitive resistor R2, the other end of the first resistor R1 is connected with the anode of the diode D, and the cathode of the diode D is grounded.

Alternatively, the concentration comparison circuit 32 includes: a triode Q1, an NPN type triode Q1, the base electrode of which is connected with the connection point of the first resistor R1 and the gas-sensitive resistor R2 so as to receive a concentration detection signal, and the emitter electrode of the triode Q1 is grounded; the third resistor R3 is connected with the collector of the triode Q1 and then is connected with VCC voltage;

a triode Q2, PNP type, wherein the base electrode of the triode Q2 is connected with the connection point of the third resistor R3 and the collector electrode of the triode Q1, and the collector electrode of the triode Q2 is connected with VCC voltage; the fourth resistor R4 is connected to the emitter of the triode Q2 and then grounded; the connection node between the emitter of the transistor Q2 and the fourth resistor R4 outputs the comparison signal Vc to the control unit 4.

Specifically, the control assembly 4 includes: the transistor Q3, PNP type, the base of the transistor Q3 is connected to the connection node between the emitter of the transistor Q2 and the fourth resistor R4 to receive the comparison signal, the collector of the transistor Q3 is connected to VCC voltage, and the emitter of the transistor Q3 outputs the control signal to the prompting component 5.

Optionally, the control component 4 further includes a sixth resistor R6, one end of which is connected to the emitter of the transistor Q2, and the other end of the sixth resistor R6 is connected to the base of the transistor Q3. Optionally, the control component 4 further includes a seventh resistor R7 connected to the collector of the transistor Q3 and then connected to the VCC voltage.

Specifically, the prompting component 5 includes a buzzer and/or a light emitting diode, and one end of the buzzer and/or the light emitting diode is connected to the emitter of the transistor Q3 and then grounded.

The specific working process is as follows: the specific working process is as follows:

the first state: the gas-sensitive resistor R2 reduces the resistance along with the increase of the concentration of the gas to be detected, so that the voltage division condition of the gas-sensitive resistor R2 is reduced in the voltage division process of the first resistor R1 and the gas-sensitive resistor R2, the base of the NPN type triode Q1 becomes low level, the conduction condition cannot be met, namely, the triode Q1 is turned off, the base of the PNP triode Q2 is directly connected with a power supply after being connected with the third resistor R3 to obtain high level, the conduction condition of the PNP triode Q2 is that the low level is conducted, the triode Q2 is also turned off, the output end of the triode Q2 is grounded through the fourth resistor R4, and the output end is low level. The low level signal is output to the base electrode of a triode Q3 of the PNP, and the triode Q3 is conducted, so that the buzzer is electrified to warn.

And a second state: the gas sensitive resistor R2 increases along with the reduction of the concentration of the gas to be detected, the condition of partial pressure of the gas sensitive resistor R2 is increased in the partial pressure process of the first resistor R1 and the gas sensitive resistor R2, the base of the NPN type triode Q1 becomes high level, the triode Q1 is conducted, the base of the triode Q2 is directly grounded through the triode Q1 to obtain low level, the triode Q2 is conducted, the output end is connected with VCC through the triode Q2, and the high level signal is output to the base of the triode Q3 of PNP. The base of the transistor Q3 outputting high level to PNP, the transistor Q3 is turned off, i.e. the buzzer and/or the light emitting diode are in the state of not being powered, so they do not work.

The sealing manner between the isolation sleeve 1 and the pipeline 8 includes, but is not limited to, the following possible implementation manners:

illustratively, as shown in fig. 1 and 2, a first sealing element 13 is arranged between the isolation sleeve 1 and the pipeline 8, and the first sealing element 13 is in interference fit with the inner wall of the isolation sleeve 1 and the outer wall of the pipeline 8.

Specifically, the first sealing element 13 is located between the inner wall of the isolation sleeve 1 and the outer wall of the pipeline 8, the inner wall of the first sealing element 13 abuts against the outer wall of the pipeline 8, and the outer wall of the first sealing element 13 abuts against the inner wall of the isolation sleeve 1. The insulating sleeve 1, the first sealing element 13 and the pipe 8 form an accommodating space. The first sealing element 13 is arranged to enable the isolation sleeve 1 and the pipeline 8 to be connected in a sealing mode, and gas in the accommodating space is guaranteed not to leak.

Optionally, the first sealing element 13 includes, but is not limited to, a sealing ring, a filling layer. The material of the filling layer may be selected from foam, gel-like filler, cloth, as long as it is ensured that the gas between the insulating sleeve 1 and the pipe 8 cannot flow out. The first sealing member 13 may be sleeved on the pipe 8 and fixedly connected with the pipe 8. The connection between the sealing ring and the pipe 8 includes, but is not limited to, bonding and clamping.

Optionally, the first sealing elements 13 are disposed at two ends of the isolation sleeve 1 in the axial direction, so as to increase the range of the accommodating space, so as to increase the amount of the gas stored in the accommodating space.

As another example, two ends of the isolation sleeve 1 in the axial direction are elastically arranged, the radius of the two ends of the isolation sleeve 1 in the axial direction is smaller than the outer diameter of the pipeline 8, and the isolation sleeve 1 can be sealed with the pipeline 8 by means of the elastic force of the isolation sleeve.

As another example, the outer sides of both ends of the spacer 1 in the axial direction may be sleeved with a binding member. The spacer sleeve 1 can be the flexible setting, and the binding acts on the outside of spacer sleeve 1, through the tight power of binding to spacer sleeve 1, makes the sectional area at the both ends of the axis direction of spacer sleeve 1 reduce, and then makes spacer sleeve 1 and 8 interference fit of pipeline to this reaches sealed purpose.

Alternatively, the binding may include, but is not limited to, a clip, a hoop, a cable tie. The material of the isolation sleeve 1 can be flexible and windproof materials such as rubber, cloth and the like.

Fig. 5 is a transverse cross-sectional view of a leakage gas detection apparatus and a thermal insulation pipe according to an exemplary embodiment, as shown in fig. 5, a spacer 1 includes a first spacer 11 and a second spacer 12, the first spacer 11 is detachably connected to the second spacer 12, and the first spacer 11 and the second spacer 12 are hermetically connected.

In particular, the insulating bush 1 is divided in the vertical direction, forming a first spacer 11 and a second spacer 12. The cross section of the first spacer 11 and the cross section of the second spacer 12 are spliced together to form an annular section. Illustratively, the cross section of the first spacer 11 may be a semicircular ring, the cross section of the second spacer 12 may also be a semicircular ring, and the first spacer 11 and the second spacer 12 are opposite in end face and may be spliced into a complete circular ring. Alternatively, the first spacer 11 may be a quarter-circle ring, the second spacer 12 may be a three-quarter-circle ring, and the first spacer 11 and the second spacer 12 are opposite to each other in end surface, or may be spliced into a complete circle ring. The first spacer 11 and the second spacer 12 may be elastically disposed so that the narrow end of the three-quarter circular ring can be sleeved outside the pipe 8. Here, the structure of the first and second spacers 11 and 12 is merely by way of example, and is not limited thereto.

The spacer is formed by connecting a second spacer 12 and a first spacer 11, and the first spacer 11 is detachably connected to the second spacer 12, so that the spacer 1 can be conveniently mounted and dismounted on any position of the pipeline 8. The first spacer 11 and the second spacer 12 are sealingly connected so that no gas can escape between the spacers and the pipe 8.

Optionally, a threaded rod 15 penetrates through the first spacer 11 and the second spacer 12, two ends of the threaded rod 15 respectively penetrate through the first spacer 11 and the second spacer 12, two ends of the threaded rod 15 are respectively in threaded connection with two nuts 16, and the nuts 16 are abutted against the first spacer 11 or the second spacer 12.

Alternatively, fig. 6 is a partial cross-sectional view of a joint of a first spacer 11 and a second spacer 12 of a leakage gas detection apparatus according to an exemplary embodiment, and referring to fig. 6, the first spacer 11 includes a first circular ring section and a first flat section, and the first flat section is connected to both ends of the first circular ring; the second spacer 12 comprises a second circular ring section and a second straight section, and the second straight section is connected to two ends of the second circular ring; the second straight section and the first straight section are correspondingly arranged, and the first circular ring section and the second circular ring section surround to form a circular ring. Two ends of the threaded rod 15 respectively penetrate out of the first straight section and the second straight section. The surfaces of the first straight section and the second straight section which deviate from each other are respectively provided with a nut 16. Two nuts 16 are respectively screwed on the threaded rod 15 at the part which penetrates out of the first straight section or the second straight section.

By turning the nut 16, the nut 16 is moved towards the direction in which the other nut 16 is located. Illustratively, turning the nut 16 on the first straight section moves the nut 16 on the first straight section toward the second straight section; the nut 16 on the second straight section is rotated so that the nut 16 on the second straight section moves towards the first straight section. In this way, the pressure of the nut 16 on the first straight section or the second straight section is increased, and the nut 16 is not easy to slide relative to the first straight section or the second straight section. The first and second straight sections are fixed between two nuts 16, thus enabling the connection of the first and second straight sections and thus the connection of the first and second spacers 11, 12. When the nut 16 is disassembled, the nut 16 is rotated reversely, so that the nut 16 moves away from the other nut 16, the operation is convenient, and the nut can be used repeatedly.

Optionally, a second seal 14 is disposed between the first spacer 11 and the second spacer 12, and the second seal 14 is interference fit with the first spacer 11 and the second spacer 12.

Optionally, the second seal 14 includes, but is not limited to, a gasket, a filler layer. The material of the filling layer may be selected from foam, gel-like filler, cloth, as long as it is ensured that the gas between the insulating sleeve 1 and the pipe 8 cannot flow out.

In addition to the above embodiments, the delivery pipe 2 is provided with the delivery valve 6, and the delivery valve 6 is used to manually release the gas in the delivery pipe 2.

In particular, if the display module or the detection module 3 or the control module 4 is damaged, the gas in the closed space can also be released through the manual valve. A detector can be arranged at the outlet of the gas to detect the content of the gas and determine whether gas leakage occurs or not, so that a leakage point is quickly analyzed and judged, and emergency repair is carried out in time.

On the basis of the above embodiments, the delivery pipe 2 is provided with the safety valve 7, the safety valve 7 is preset with a safety pressure threshold value, and the safety valve 7 is used for automatically releasing the gas in the delivery pipe 2.

Specifically, by providing the safety valve 7, the device safety mechanism is ensured: because the gas in the pipeline 8 leaks the back, gas is arranged in accommodation space and delivery pipe 2, gas is in a relatively confined environment, along with gaseous increase, the pressure in the enclosure space can rise gradually, if can not in time effective pressure release, the risk that the device is exploded by the crowded can take place, and the emergence of this thing has effectively been avoided to relief valve 7, after gaseous gathering pressure risees to certain scope, relief valve 7 can initiatively open under the promotion of pressure, release unnecessary gaseous gas, then close once more, seal the gas that continues to leak, ensure the safety of device.

The utility model provides an insulating tube, includes first pipeline 81, connect in male joint 82 of first pipeline 81 one end, second pipeline 83, connect in the female joint 84 of second pipeline 83 one end, and the insulation cover 9 of cover-hanging outside first pipeline 81, second pipeline 83, male joint 82 and female joint 84 cooperation are connected, still include the gaseous detection device of leak as above any embodiment, the cooperation junction of male joint 82 and female joint 84 is located to the cover of separation cover 1, the first end and the first pipeline 81 sealing connection of separation cover 1, the second end and the second pipeline 83 sealing connection of separation cover 1.

Specifically, the gas leakage detection device can be used at the position of a pipeline 8 (as shown in fig. 1 and 2), can be used at the position of a joint of two sections of pipelines 8 (as shown in fig. 7), and can also be used for gas detection of a leakage-prone point of equipment such as a valve and the like.

Alternatively, as shown in fig. 1, 2 and 7, the thermal insulation cover 9 includes a heating tape 91, a felt layer 92 and a glass cloth layer 93.

Specifically, the heating band 91 may include a resistance wire that is electrically connected to an external power source. The resistance wire can be spirally wound outside the pipeline 8. The heating belt 91, the felt layer 92 and the glass fiber cloth layer 93 are sequentially sleeved on the pipeline 8 from inside to outside. The outermost glass fiber cloth layer 93 is provided with binding pieces such as binding ropes, hoops and the like for fixing the heat-insulating layer and the pipeline 8 together.

The terms "upper" and "lower" are used to describe relative positions of the structures in the drawings, and are not used to limit the scope of the present invention, and the relative relationship between the structures may be changed or adjusted without substantial technical changes.

It should be noted that: in the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Furthermore, in the present disclosure, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 present disclosure. In this specification, the schematic representations of the terms used above 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.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. The utility model provides a gas leakage detection device for install on the insulating tube, the insulating tube includes the pipeline and overlaps and establish the insulation cover outside the pipeline, its characterized in that, gas detection device includes: the insulation sleeve is arranged between the pipeline and the insulation sleeve, the insulation sleeve is sleeved outside the pipeline, the two ends of the insulation sleeve are axially connected with the pipeline in a sealing mode, the first end of the outgoing pipe is communicated with the insulation sleeve, the second end of the outgoing pipe is connected with the detection assembly, and the detection assembly is used for detecting whether gas to be detected exists in the outgoing pipe or not and outputting a detection signal.

2. The leaking gas detecting apparatus according to claim 1, further comprising:

the control assembly is connected with the detection assembly and used for receiving the detection signal to output a control signal;

and the prompting component is connected to the control component and used for starting or closing a prompting function according to the control signal.

3. The leaking gas detecting apparatus according to claim 1, wherein a first sealing member is provided between the isolation sleeve and the pipe, the first sealing member being interference-fitted to an inner wall of the isolation sleeve and an outer wall of the pipe.

4. The apparatus according to claim 1, wherein the spacer includes a first spacer and a second spacer, the first spacer being detachably connected to the second spacer, and the first spacer and the second spacer being sealingly connected.

5. The apparatus according to claim 4, wherein a threaded rod is disposed through the first spacer and the second spacer, two ends of the threaded rod respectively penetrate through the first spacer and the second spacer, two ends of the threaded rod are respectively in threaded connection with two nuts, and the nuts are tightly pressed against the first spacer or the second spacer.

6. The leaking gas detecting apparatus according to claim 4, wherein a second sealing member is provided between the first spacer and the second spacer, the second sealing member being interference-fitted to the first spacer and the second spacer.

7. The apparatus according to claim 1, wherein a lead-out valve is provided on the lead-out tube, and the lead-out valve is configured to manually release the gas in the lead-out tube.

8. The apparatus according to claim 1, wherein a safety valve is disposed on the delivery pipe, the safety valve is preset with a safety pressure threshold value, and the safety valve is used for automatically releasing the gas in the delivery pipe.

9. An insulating tube, includes first pipeline, connects in the male joint of first pipeline one end, second pipeline, connects in the female joint of second pipeline one end and the insulation cover of cover establishing outside first pipeline, second pipeline, male joint and female joint cooperation are connected, its characterized in that still includes the gaseous detection device of leakage of any of claims 1-8, the separation cover overlaps to be located the male joint with the cooperation junction of female joint, the first end of separation cover with first pipeline sealing connection, the second end of separation cover with second pipeline sealing connection.

10. The insulated pipe of claim 9, wherein the insulating jacket comprises a heating tape, a felt layer, and a fiberglass cloth layer.

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