Heat supply pipeline insulation airtightness detection structure

Abstract

The utility model relates to pipeline airtightness detection technical field, and disclose a kind of heat supply pipeline heat preservation airtightness detection structure, including pipeline main body, the outer wall of pipeline main body is separately provided with lower shell and upper shell, the inner wall of lower shell is fixedly installed with first mounting plate, by utilizing leakage gas pressure drive film deformation, drive first striker action fixed on it, in this process, lever amplifies tiny linear displacement and is converted into the obvious deflection of indicating arrow, change pressure into the reading of pointer on pressure scale, so that operating personnel can intuitively, quantitatively observe leakage grade, simultaneously in the magnetic repulsion of first magnetic block and second magnetic block Non-contact transmission drive slider action, to realize the automatic switching between yellow early warning peak horn and alarm lamp of high leakage threshold when and red alarm, and further to its leakage realization grading early warning, further improve the efficiency of its leakage detection.

Description

Technical Field

[0001] This utility model relates to the field of pipeline airtightness testing technology, specifically a structure for testing the airtightness of heating pipeline insulation. Background Technology

[0002] In industrial fields such as district heating and chemical transportation, prefabricated direct-buried insulated pipelines are widely used due to their excellent thermal insulation performance and ease of construction. The core structure of this type of pipeline consists of an inner working steel pipe, an intermediate insulation layer, and an outer protective pipe. The key to its long-term operational safety and energy efficiency lies in ensuring the integrity of the outer protective pipe and the airtightness of the insulation layer to prevent moisture intrusion that could lead to insulation failure and steel pipe corrosion.

[0003] Existing airtightness testing methods typically rely on regular manual inspections and data recording, which cannot achieve real-time, continuous, and automatic monitoring. They cannot provide timely warnings in the early stages of leaks, potentially missing the best time for maintenance. Furthermore, conventional pressure gauge readings are not intuitive enough and are greatly affected by ambient temperature fluctuations, making them insensitive to minor leaks. Therefore, they cannot distinguish between early minor leaks and serious leaks, which may lead to insufficient response or misjudgment by maintenance personnel to potential risks, potentially causing unnecessary downtime or more serious operational accidents. Therefore, we have introduced an airtightness testing structure for heating pipeline insulation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a heat supply pipeline insulation and airtightness detection structure, which has the advantages of leak classification detection and shortened shell maintenance and installation time, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a heat supply pipeline insulation and airtightness detection structure, including a pipeline body, a lower shell and an upper shell respectively provided on the outer wall of the pipeline body, a first mounting plate fixedly installed on the inner wall of the lower shell, a second mounting plate fixedly installed on the inner wall of the upper shell, a positioning pin fixedly assembled at the bottom of the first mounting plate, a fixed connection assembly provided in the inner cavity of the second mounting plate, a positioning groove opened in the inner wall of the second mounting plate, a glass bottle and an indicator plate fixedly installed on the top of the lower shell, and a leakage warning assembly provided in the inner cavity of the glass bottle.

[0006] As a preferred technical solution of this utility model: the first mounting plate, the second mounting plate, the positioning pins, the fixed connection components and the positioning grooves are regarded as a set of movable components, and the number of such movable components is four sets, which are arranged in a rectangular array. The outer wall of the four positioning pins is adapted to the inner wall shape of the four positioning grooves.

[0007] As a preferred technical solution of this utility model: the leakage warning component includes a first partition and a second partition fixedly installed on the inner wall of a glass bottle. A signal receiver is provided on the top of the first partition, and a buzzer and an alarm light are respectively provided on the top of the second partition. A square groove is opened on the side wall of the glass bottle, and a fixing rod is fixedly installed on the inner wall of the square groove. A lever is rotatably connected to the outer wall of the fixing rod. A red warning element is provided in the inner cavity of the glass bottle. The red warning element includes a thin film disposed on the inner wall of the glass bottle. A first striking pin is fixedly installed on the top of the thin film. A first sensor is fixedly installed on the bottom of the first partition, and a third spring is provided at the bottom of the first sensor. A yellow warning element is provided in the inner cavity of the indicator plate. The yellow warning element includes an indicator arrow disposed on the outer wall of the lever. A first magnetic block is embedded in the inner cavity of the indicator arrow. A second circular groove is opened on the inner wall of the indicator plate. A second sensor, a fourth spring, and a slider are respectively disposed on the inner wall of the second circular groove. A second magnetic block is embedded in the outer wall of the slider, and a second striking pin is fixedly installed on the inner wall of the slider. A pressure scale is provided on the side wall of the indicator plate.

[0008] As a preferred technical solution of this utility model: one end of the lever is connected and fixed to the side wall of the first firing pin, and the other end is connected and fixed to the side wall of the indicator arrow; the third spring is located at the top of the first firing pin and the bottom of the first sensor, with one end overlapping the top of the first firing pin and the other end overlapping the bottom of the third spring; the first sensor is located at the top of the first firing pin and is electrically connected to the signal receiver; the signal receiver is electrically connected to the buzzer and the alarm light respectively; the unembedded sides of the first and second magnetic blocks are respectively S poles and are magnetically repelled; the outer wall of the slider is slidably fitted to the inner wall of the second circular groove; the fourth spring is located on one side of the slider, with one end overlapping the side wall of the slider and the other end overlapping the inner wall of the second circular groove; the second sensor is located on one side of the second firing pin and is electrically connected to the signal receiver.

[0009] As a preferred technical solution of this utility model: the fixed connection assembly includes a guide groove, a sliding groove and a first circular groove respectively opened on the inner wall of the second mounting plate, the bottom of the positioning pin is provided with a cut surface, the inner wall of the positioning pin is provided with a slot, the inner cavity of the guide groove is provided with a first convex pin and a first spring respectively, the inner cavity of the sliding groove is provided with a connecting rod, and the inner cavity of the first circular groove is provided with a second spring and a button respectively.

[0010] As a preferred technical solution of this utility model: one end of the first convex pin is shaped as an inclined surface, and the inclined end is slidably fitted against the outer wall of the buzzer; the outer wall of the other end of the first convex pin is slidably fitted against the inner wall of the guide groove; the first spring is located on one side of the first convex pin, and one end overlaps with the side wall of the first convex pin, and the other end overlaps with the inner wall of the guide groove; one end of the connecting rod is connected and fixed to the side wall of the first convex pin, and the other end is connected and fixed to the side wall of the button; the outer wall of the connecting rod is slidably fitted against the inner wall of the slide groove; the outer wall of the button is slidably fitted against the inner wall of the first circular groove; the second spring is located on one side of the button, and one end overlaps with the side wall of the button, and the other end overlaps with the inner wall of the first circular groove; the inclined end of the first convex pin is adapted to the shape of the inner wall of the slot.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This heating pipeline insulation airtightness detection structure utilizes the pressure of leaking gas to drive the deformation of a diaphragm, which in turn moves a first striking pin fixed thereon. During this process, the lever amplifies the minute linear displacement and converts it into a significant deflection of the indicator arrow, transforming pressure changes into a reading on the pressure scale. This allows operators to intuitively and quantitatively observe the leakage level. Simultaneously, the magnetic repulsion of the first and second magnetic blocks drives the slider in a non-contact transmission manner, thereby achieving automatic switching between a yellow warning alarm and alarm light at low leakage thresholds and a red alarm at high leakage thresholds. This enables graded early warning of leaks, further improving the efficiency of leak detection.

[0012] 2. The heating pipeline insulation airtightness detection structure utilizes the tangential surface of the positioning pin to press against the inclined surface of the first convex pin, driving it to compress the first spring, which in turn moves the connecting rod and button. During this process, the compression of the first and second springs is utilized, and after the pin is in place, the first convex pin automatically springs into the slot to complete the locking. This simplifies the alignment and fixing of multiple first and second mounting plates into a simple alignment and closing action, enabling the rapid and accurate installation and secure connection of the lower and upper shells. This effectively improves the efficiency of assembly and disassembly, thereby ensuring the convenience and safety of maintenance operations. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the leakage early warning component of this utility model; Figure 3 This is a schematic diagram of the fixed connection component structure of this utility model; Figure 4 This utility model Figure 2Enlarged structural diagram at point A in the middle; Figure 5 This utility model Figure 3 Enlarged structural diagram at point B.

[0014] In the diagram: 1. Pipe body; 2. Lower shell; 3. Upper shell; 4. First mounting plate; 5. Positioning pin; 6. Fixed connection assembly; 7. Positioning groove; 8. Glass bottle; 9. Leakage warning assembly; 10. Indicator plate; 11. Second mounting plate; 601. Guide groove; 602. Slide groove; 603. First circular groove; 604. Cross-section; 605. Slot; 606. First convex pin; 607. First spring; 608. Connecting rod; 609. Second spring; 610. Button; 901. First partition; 902. Second partition; 903. Signal connector Receiver; 904, Sounder; 905, Alarm Light; 906, Square Slot; 907, Fixed Rod; 908, Lever; 909, Red Warning Component; 910, Yellow Warning Component; 911, Pressure Scale; 9091, Diaphragm; 9092, First Strike Pin; 9093, First Sensor; 9094, Third Spring; 9101, Indicating Arrow; 9102, First Magnetic Block; 9103, Second Circular Slot; 9104, Second Sensor; 9105, Fourth Spring; 9106, Slider; 9107, Second Strike Pin; 9108, Second Magnetic Block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1 - Figure 5 A heat supply pipeline insulation and airtightness detection structure includes a pipeline body 1. The outer wall of the pipeline body 1 is respectively provided with a lower shell 2 and an upper shell 3. A first mounting plate 4 is fixedly installed on the inner wall of the lower shell 2, and a second mounting plate 11 is fixedly installed on the inner wall of the upper shell 3. A positioning pin 5 is fixedly assembled at the bottom of the first mounting plate 4. A fixed connection component 6 is provided in the inner cavity of the second mounting plate 11. A positioning groove 7 is provided in the inner wall of the second mounting plate 11. A glass bottle 8 and an indicator plate 10 are fixedly installed on the top of the lower shell 2. A leakage warning component 9 is provided in the inner cavity of the glass bottle 8. In the above structure, by setting a separable upper shell 3 and a lower shell 2 on the outer wall of the pipe body 1, and installing a first mounting plate 4 with a positioning pin 5 and a second mounting plate 11 with a fixed connection component 6 inside the two respectively, the detection structure can be quickly, centered and firmly installed on the pipe body 1 by using the cooperation of the positioning pin 5 and the positioning groove 7. At the same time, the glass bottle 8 and the indicator plate 10 integrated on the top of the lower shell 2 and the leakage warning component 9 inside them provide a basis for subsequent intuitive airtightness detection.

[0017] In a preferred embodiment: the first mounting plate 4, the second mounting plate 11, the positioning pins 5, the fixed connection component 6 and the positioning grooves 7 are regarded as a set of movable components, and the number of such movable components is four sets, which are arranged in a rectangular array. The outer wall of the four positioning pins 5 is adapted to the inner wall shape of the four positioning grooves 7. In the above structure, by setting up a movable component consisting of a first mounting plate 4, a second mounting plate 11, positioning pins 5, a fixed connection component 6, and a positioning groove 7, and using four sets arranged in a rectangular array, the lower housing 2 and the upper housing 3 can be quickly positioned and firmly connected. At the same time, the shapes of the four positioning pins 5 and the positioning grooves 7 are adapted to ensure that the lower housing 2 and the upper housing 3 will not be misaligned when they are closed, thereby effectively ensuring the stability and sealing of the whole after it is installed on the pipe body 1.

[0018] In a preferred embodiment: the leakage warning component 9 includes a first partition 901 and a second partition 902 respectively fixedly installed on the inner wall of the glass bottle 8. A signal receiver 903 is provided on the top of the first partition 901, and a buzzer 904 and an alarm light 905 are respectively provided on the top of the second partition 902. A square groove 906 is formed on the side wall of the glass bottle 8, and a fixing rod 907 is fixedly installed on the inner wall of the square groove 906. A lever 908 is rotatably connected to the outer wall of the fixing rod 907. A red warning element 909 is provided in the inner cavity of the glass bottle 8. The red warning element 909 includes a film 9091 disposed on the inner wall of the glass bottle 8. A first firing pin 9092 is fixedly installed on the top of the film 9091. The bottom of the first partition 901... A first sensor 9093 is fixedly installed, and a third spring 9094 is provided at the bottom of the first sensor 9093. A yellow warning element 910 is provided in the inner cavity of the indicator plate 10. The yellow warning element 910 includes an indicator arrow 9101 provided on the outer wall of the lever 908. A first magnetic block 9102 is embedded in the inner cavity of the indicator arrow 9101. A second circular groove 9103 is opened in the inner wall of the indicator plate 10. A second sensor 9104, a fourth spring 9105 and a slider 9106 are respectively provided in the inner wall of the second circular groove 9103. A second magnetic block 9108 is embedded in the outer wall of the slider 9106. A second firing pin 9107 is fixedly installed in the inner wall of the slider 9106. A pressure scale 911 is provided on the side wall of the indicator plate 10. In a preferred embodiment: one end of lever 908 is fixedly connected to the side wall of the first firing pin 9092, and the other end is fixedly connected to the side wall of the indicator arrow 9101. A third spring 9094 is located at the midpoint between the top of the first firing pin 9092 and the bottom of the first sensor 9093, with one end overlapping the top of the first firing pin 9092 and the other end overlapping the bottom of the third spring 9094. The first sensor 9093 is located at the top of the first firing pin 9092 and is electrically connected to the signal receiver 903. The signal receiver 903... The first magnetic block 9102 and the second magnetic block 9108 are electrically connected to the sounder 904 and the alarm light 905. The unmounted sides of the first magnetic block 9102 and the second magnetic block 9108 are respectively S poles and are magnetically repelled. The outer wall of the slider 9106 is slidably attached to the inner wall of the second circular groove 9103. The fourth spring 9105 is located on one side of the slider 9106, with one end overlapping the side wall of the slider 9106 and the other end overlapping the inner wall of the second circular groove 9103. The second sensor 9104 is located on one side of the second striker 9107 and is electrically connected to the signal receiver 903. In the above structure, when a gas leak occurs in the main pipe 1, the gas enters the inner cavity where the lower shell 2 and the upper shell 3 are joined. This gas then enters the inner cavity of the glass bottle 8, causing the diaphragm 9091 to deform under the pressure of the gas, forming a convex shape. The convex top drives the first striking pin 9092 to move upwards, which simultaneously compresses the third spring 9094. As the first striking pin 9092 moves upwards, it also drives one end of the lever 908 to move upwards. The lever 908 is then turned via the fixed rod 907 in the middle, causing the indicator arrow 9101, which is fixedly connected to the other end of the lever 908, to move downwards. The downward-moving indicator arrow 9101 indicates... The corresponding pressure scale 911 allows operators to directly observe the pressure of the leaking gas. Simultaneously, when the indicator arrow 9101 moves to correspond with the second circular groove 9103, the unmounted side of the first magnetic block 9102 generates a repulsive magnetic field with the unmounted side of the second magnetic block 9108. This pushes the slider 9106 to move, causing the second magnetic block 9108 to slide the slider 9106 along the inner wall of the second circular groove 9103. This simultaneously compresses the fourth spring 9105 and moves the second striker 9107 towards the second sensor 9104. When the second magnetic block 9108 contacts the second sensor 9104, the second sensor 9104 sends a signal to the signal receiver 903. The signal causes the second circular groove 9103 to first send a signal to the buzzer 904, causing the buzzer 904 to issue a warning. Simultaneously, the buzzer 904 also sends an activation signal to the alarm light 905, causing the alarm light 905 to flash yellow, thus alerting the operator to a slight gas leak in the main body of the pipeline 1. Then, when the gas pressure in the pipeline 1 increases due to the leak, the diaphragm 9091 significantly moves the first striker 9092 upwards, causing it to contact the bottom of the first sensor 9093. This, in turn, causes the indicator arrow 9101 to move downwards from its position corresponding to the second circular groove 9103 due to a significant displacement of one end of the lever 908, thus triggering the second magnetic block 9108. The repulsive magnetic field between the first magnetic block 9102 and the second magnetic block 9106 weakens, causing the slider 9106 to reset and disconnect from the second sensor 9104 by the rebound of the fourth spring 9105. This stops the buzzer 904 and alarm light 905. The first buzzer 9092 then contacts the bottom of the first sensor 9093, causing it to send a signal to the signal receiver 903. The signal receiver 903 then sends an activation signal to the buzzer 904 and alarm light 905, causing the buzzer 904 to issue a warning and the alarm light 905 to illuminate red, thus alerting operators that the pressure leakage threshold of the main pipeline 1 is too high, allowing operators to take appropriate measures based on the severity of the leak.Simultaneously, after the air pressure in the inner cavity where the lower housing 2 and upper housing 3 are closed returns to normal, the first striking pin 9092 and the diaphragm 9091 are reset by the rebound of the third spring 9094, breaking the contact between the first striking pin 9092 and the first sensor 9093. This causes the buzzer 904 and the alarm light 905 to stop. At this time, the downward-displaced first striking pin 9092 also drives one end of the lever 908 to move downward, causing the lever 908 to reverse direction through the square groove 906 in the middle, thus resetting the indicator arrow 9101 and the first magnetic block 9102 to their initial state.

[0019] In a preferred embodiment: the fixed connection assembly 6 includes a guide groove 601, a sliding groove 602 and a first circular groove 603 respectively formed on the inner wall of the second mounting plate 11; the bottom of the positioning pin 5 is provided with a cut surface 604; the inner wall of the positioning pin 5 is provided with a slot 605; the inner cavity of the guide groove 601 is provided with a first convex pin 606 and a first spring 607; the inner cavity of the sliding groove 602 is provided with a connecting rod 608; and the inner cavity of the first circular groove 603 is provided with a second spring 609 and a button 61. In a preferred embodiment: one end of the first convex pin 606 is beveled, and the beveled end slides against the outer wall of the buzzer 904; the other end of the first convex pin 606 slides against the inner wall of the guide groove 601; the first spring 607 is located on one side of the first convex pin 606, with one end overlapping the side wall of the first convex pin 606 and the other end overlapping the inner wall of the guide groove 601; one end of the connecting rod 608 is connected to the first convex pin 606. The two ends are connected and fixed to the side wall, and the other end is connected and fixed to the side wall of the button 610. The outer wall of the connecting rod 608 is slidably fitted to the inner wall of the slide groove 602. The outer wall of the button 610 is slidably fitted to the inner wall of the first circular groove 603. The second spring 609 is located on one side of the button 610, and one end is connected to the side wall of the button 610, and the other end is connected to the inner wall of the first circular groove 603. The inclined end of the first convex pin 606 is adapted to the shape of the inner wall of the slot 605. In the above structure, when the positioning pin 5 is inserted into the inner cavity of the positioning groove 7, the cut surface 604 at the bottom of the positioning pin 5 first contacts the inclined end of the first convex pin 606. The first convex pin 606 is then compressed and guided by the inclined end to slide along the inner wall of the guide groove 601. This sliding motion compresses the first spring 607 and simultaneously causes the connecting rod 608 fixed to the side wall to slide along the inner wall of the slide groove 602. The sliding connecting rod 608 simultaneously drives the button 610 fixed at the other end to slide along the inner wall of the slot 605. The sliding button 610 then compresses the second spring 609. At this point, when the positioning pin 5 is fully inserted into the inner cavity of the positioning groove 7, the inclined end of the first convex pin 606 corresponds to the slot 605, allowing the button 610 and the first... The convex pin 606 is reset by the rebound of the first spring 607 and the second spring 609, which drives the connecting rod 608 to slide in the opposite direction along the inner wall of the slide groove 602. This causes the first convex pin 606 to be inserted into the inner cavity of the slot 605, thereby fixing the positioning pin 5. When it is necessary to release the fixation, pressing the button 610 compresses the second spring 609 again. The button 610 then drives the first convex pin 606 to slide along the inner wall of the guide groove 601 again through the connecting rod 608, which in turn compresses the first spring 607. This causes the inclined end of the first convex pin 606 to exit the inner cavity of the slot 605, thus releasing the fixation on the positioning pin 5. This allows the positioning pin 5 to exit the inner cavity of the positioning groove 7, enabling the disassembly of the lower housing 2 and the upper housing 3.

[0020] Working principle: First, the lower housing 2 with the positioning pin 5 and the upper housing 3 with the fixed connection assembly 6 are fastened to the outer wall of the pipe body 1. When the positioning pin 5 is inserted into the inner cavity of the positioning groove 7, the cut surface 604 at the bottom of the positioning pin 5 first contacts the inclined end of the first convex pin 606. The first convex pin 606 is squeezed and guided by the inclined end to slide along the inner wall of the guide groove 601. This sliding will cause the first spring 607 to be compressed, and at the same time, it will also cause the connecting rod 608 fixed on the side wall to slide along the inner wall of the slide groove 602. The sliding connecting rod 608 will simultaneously drive the button 610 fixed at the other end to slide along the inner wall of the slot 605. The sliding button 610 will then cause the second spring 609 to be compressed. When the positioning pin 5 is fully inserted into the inner cavity of the positioning groove 7, the inclined end of the first convex pin 606 will correspond to the slot 605. The button 610 and the first convex pin 606 will be reset by the rebound of the first spring 607 and the second spring 609, causing the connecting rod 608 to slide in the opposite direction along the inner wall of the slide groove 602. This will allow the first convex pin 606 to be inserted into the inner cavity of the slot 605, thus fixing the positioning pin 5 and completing the installation of the lower housing 2 and the upper housing 3. Secondly, when gas leaks from the pipe body 1, the gas enters the inner cavity where the lower housing 2 and the upper housing 3 are closed, and the gas enters the inner cavity of the glass bottle 8. The diaphragm 9091 will deform under the pressure of the gas, causing... Its deformation is convex, and the convex top will drive the first striker 9092 to move upward. This movement will synchronously drive the third spring 9094 to compress. When the first striker 9092 moves upward, it will drive one end of the lever 908 to move upward simultaneously. The lever 908 will then be turned via the fixed rod 907 in the middle. The indicator arrow 9101, which is fixedly connected to the other end of the lever 908, will be driven downward. The downward-moving indicator arrow 9101 will indicate the corresponding pressure scale 911, allowing the operator to directly observe the pressure of the leaking gas. At the same time, when the indicator arrow 9101 moves to correspond to the second circular groove 9103, the un-embedded side of the first magnetic block 9102 will be aligned with the second magnetic block 9103. The unmounted side of the second magnetic block 9108 generates a repulsive magnetic field, causing the slider 9106 to shift. This causes the second magnetic block 9108 to move the slider 9106 along the inner wall of the second circular groove 9103, simultaneously compressing the fourth spring 9105 and causing the second striker 9107 to move closer to the second sensor 9104. When the second magnetic block 9108 contacts the second sensor 9104, the second sensor 9104 sends a signal to the signal receiver 903. The second circular groove 9103 then sends a signal to the alarm 904, causing the alarm 904 to sound an alarm. Simultaneously, the alarm 904 also sends an activation signal to the alarm light 905, causing the alarm light 905 to flash yellow.This mechanism alerts operators to a slight gas leak in the main pipe 1. Secondly, as the gas pressure increases due to the leak, the diaphragm 9091 significantly displaces the first striker 9092 upwards, bringing it into contact with the bottom of the first sensor 9093. Consequently, the indicator arrow 9101 moves downwards from its position corresponding to the second circular groove 9103 due to a significant displacement of one end of the lever 908. This weakens the repulsive magnetic field between the second magnetic block 9108 and the first magnetic block 9102, allowing the slider 9106 to... The rebound of the fourth spring 9105 causes the second striker 9107 to reset and disconnect from the second sensor 9104, stopping the buzzer 904 and alarm light 905. At this point, the first striker 9092 contacts the bottom of the first sensor 9093, causing it to send a signal to the signal receiver 903. The signal receiver 903 then sends an activation signal to the buzzer 904 and alarm light 905, causing the buzzer 904 to sound an alarm and the alarm light 905 to illuminate red, sequentially warning the workers about the gas flow in the pipeline. The excessively high pressure leakage threshold allows operators to easily classify and implement appropriate measures. Simultaneously, after the internal air pressure recovers when the lower housing 2 and upper housing 3 are closed, the first striker 9092 and diaphragm 9091 are reset by the rebound of the third spring 9094, breaking the contact between the first striker 9092 and the first sensor 9093. This causes the buzzer 904 and alarm light 905 to stop. At this time, the downward-displaced first striker 9092 also drives one end of the lever 908 to move downward, causing the lever 908 to reverse direction through the square groove 906 in the middle. This mechanism resets the indicator arrow 9101 and the first magnetic block 9102 to their initial state. Simultaneously, when disassembly and repair of the lower housing 2 and upper housing 3 are required, pressing button 610 compresses the second spring 609. This causes button 610 to slide along the inner wall of the guide groove 601 via connecting rod 608, further compressing the first spring 607. The beveled end of the first convex pin 606 then exits the inner cavity of the slot 605, allowing easy separation of the upper housing 3 and lower housing 2, thus shortening repair time.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat supply pipeline insulation airtightness detection structure, comprising a pipeline main body (1), characterized in that: The outer wall of the main body of the pipeline (1) is provided with a lower shell (2) and an upper shell (3). The inner wall of the lower shell (2) is fixedly installed with a first mounting plate (4). The inner wall of the upper shell (3) is fixedly installed with a second mounting plate (11). The bottom of the first mounting plate (4) is fixedly fitted with a positioning pin (5). The inner cavity of the second mounting plate (11) is provided with a fixed connection component (6). The inner wall of the second mounting plate (11) is provided with a positioning groove (7). The top of the lower shell (2) is fixedly installed with a glass bottle (8) and an indicator plate (10). The inner cavity of the glass bottle (8) is provided with a leakage warning component (9).

2. The heat supply pipeline airtightness detection structure according to claim 1, characterized in that: The first mounting plate (4), the second mounting plate (11), the positioning pins (5), the fixed connection components (6) and the positioning grooves (7) are considered as a set of movable components, and there are four sets of movable components, which are arranged in a rectangular array. The outer walls of the four positioning pins (5) are adapted to the inner wall shapes of the four positioning grooves (7).

3. The heat supply pipeline airtightness detection structure according to claim 1, characterized in that: The leakage warning component (9) includes a first partition (901) and a second partition (902) fixedly installed on the inner wall of the glass bottle (8). A signal receiver (903) is provided on the top of the first partition (901), and a buzzer (904) and an alarm light (905) are provided on the top of the second partition (902). A square groove (906) is provided on the side wall of the glass bottle (8). A fixing rod (907) is fixedly installed on the inner wall of the square groove (906). A lever (908) is rotatably connected to the outer wall of the fixing rod (907). A red warning element (909) is provided in the inner cavity of the glass bottle (8). The red warning element (909) includes a film (9091) disposed on the inner wall of the glass bottle (8). A first striking pin (9092) is fixedly installed on the top of the film (9091), and a first striking pin (9092) is fixedly installed on the bottom of the first partition (901). The device has a first sensor (9093), a third spring (9094) at the bottom of the first sensor (9093), a yellow warning element (910) in the inner cavity of the indicator plate (10), the yellow warning element (910) including an indicator arrow (9101) on the outer wall of the lever (908), a first magnetic block (9102) embedded in the inner cavity of the indicator arrow (9101), a second circular groove (9103) on the inner wall of the indicator plate (10), a second sensor (9104), a fourth spring (9105) and a slider (9106) respectively on the inner wall of the second circular groove (9103), a second magnetic block (9108) embedded in the outer wall of the slider (9106), a second firing pin (9107) fixedly installed on the inner wall of the slider (9106), and a pressure scale (911) on the side wall of the indicator plate (10).

4. The heat supply pipeline airtightness detection structure according to claim 3, characterized in that: One end of the lever (908) is fixedly connected to the side wall of the first firing pin (9092), and the other end is fixedly connected to the side wall of the indicator arrow (9101). The third spring (9094) is located at the top of the first firing pin (9092) and the bottom of the first sensor (9093), with one end overlapping the top of the first firing pin (9092) and the other end overlapping the bottom of the third spring (9094). The first sensor (9093) is located at the top of the first firing pin (9092) and is electrically connected to the signal receiver (903). The signal receiver (903) is connected to the buzzer (9094) and the signal receiver (9095). 4) Electrically connected to the alarm light (905), the unmounted sides of the first magnetic block (9102) and the second magnetic block (9108) are respectively S poles and are magnetically repelled. The outer wall of the slider (9106) is slidably attached to the inner wall of the second circular groove (9103). The fourth spring (9105) is located on one side of the slider (9106), with one end overlapping the side wall of the slider (9106) and the other end overlapping the inner wall of the second circular groove (9103). The second sensor (9104) is located on one side of the second striker (9107) and is electrically connected to the signal receiver (903).

5. The heat supply pipeline airtightness detection structure according to claim 1, characterized in that: The fixed connection assembly (6) includes a guide groove (601), a slide groove (602) and a first circular groove (603) respectively opened on the inner wall of the second mounting plate (11). The bottom of the positioning pin (5) is provided with a cut surface (604). The inner wall of the positioning pin (5) is provided with a slot (605). The inner cavity of the guide groove (601) is provided with a first convex pin (606) and a first spring (607). The inner cavity of the slide groove (602) is provided with a connecting rod (608). The inner cavity of the first circular groove (603) is provided with a second spring (609) and a button (610).

6. The heat supply pipeline insulation airtightness detection structure according to claim 5, characterized in that: One end of the first convex pin (606) is beveled, and the beveled end slides against the outer wall of the buzzer (904). The outer wall of the other end of the first convex pin (606) slides against the inner wall of the guide groove (601). The first spring (607) is located on one side of the first convex pin (606), with one end overlapping the side wall of the first convex pin (606) and the other end overlapping the inner wall of the guide groove (601). One end of the connecting rod (608) is connected and fixed to the side wall of the first convex pin (606). The other end is connected and fixed to the side wall of the button (610). The outer wall of the connecting rod (608) is slidably fitted to the inner wall of the slide groove (602). The outer wall of the button (610) is slidably fitted to the inner wall of the first circular groove (603). The second spring (609) is located on one side of the button (610), with one end overlapping the side wall of the button (610) and the other end overlapping the inner wall of the first circular groove (603). The inclined end of the first convex pin (606) is adapted to the shape of the inner wall of the slot (605).

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