Toluene cooler sealing detection assembly

Abstract

The invention relates to the technical field of sealing detection, in particular to a toluene cooler sealing detection assembly which is installed on the outer wall of the connecting position of a pipeline and a cooler and comprises a positioning belt, a fixing belt, a supporting belt, a covering belt, a sealing performance detection assembly and a strain gauge. The inner wall of the fixing belt is connected with the outer wall of the positioning belt, the supporting belt is wound on the outer wall of the cooler, the left side and the right side of the inner wall of the covering belt are connected with the outer wall of the supporting belt and the outer wall of the fixing belt respectively, and the positioning belt, the fixing belt, the supporting belt and the covering belt are matched with the pipeline and the cooler to form a cavity. The sealing performance detection assembly is connected between the positioning belt and the fixing belt, the strain gauge is connected to the sealing performance detection assembly, and the left side of the sealing performance detection assembly is located in the cavity. And the monitoring precision is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of sealing detection, in particular to a sealing detection component for a toluene cooler. Background Art

[0002] A toluene cooler is a heat exchange device specifically used to reduce the temperature of toluene. Due to the high pressure during use of the cooler, any slight gap between the cooler connection end and the conveying equipment will cause the internal steam of the cooler to spray out from the gap under high pressure. For this reason, manufacturers will arrange sealing detection equipment at the cooler connection end. When a leak occurs, the fluid will act on the sealing detection equipment to achieve detection.

[0003] During the process of transporting toluene to the cooler, the conveying equipment and the cooler connection surface are not connected in an integrated manner, but are connected by bolts, which makes the conveying equipment and the cooler connection surface a leakage-prone surface. By installing an intelligent sensor at the downwind port of the leakage surface, when the connection end surface leaks, the fluid will act on the intelligent sensor along the wind direction and trigger an alarm, thereby realizing the detection of whether the leakage-prone point of the connection surface between the conveying equipment and the cooler is leaking. However, due to the single position of the intelligent sensor, when a leak occurs at the leakage-prone point, the intelligent sensor cannot accurately lock the leakage position.

[0004] In response to the above problems, some solutions have been proposed in the prior art. For example, multiple sensors are set up to surround the leak-prone points of the cooler. When a leak occurs, the leaking steam will directly act on the sensor, breaking the static balance of the sensor. By determining the position of the sensor, the leak point can be quickly locked in the event of a leak. However, since the connecting surface between the conveying equipment and the cooler is circular, there will be a gap between two adjacent sensors. In the event of a leak, the sensor cannot guarantee that the leak point is covered, which will lead to errors in detection and affect the safety of workers.

[0005] Therefore, a toluene cooler sealing detection component is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a toluene cooler sealing detection component, which solves the problem that when sensors are arranged, a gap will exist between the pipeline and the circular outer wall of the cooler, thereby affecting the sealing detection accuracy. By using the sealing detection component to perform dual monitoring of airflow and temperature in a closed space, the sealing detection accuracy is effectively improved.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The utility model provides a kind of toluene cooler sealing detection assembly, it is installed on the outer wall of pipeline and cooler connection place, including positioning band, fixed band, support band, covering band, sealing detection assembly and strain gauge, the positioning band is around set on the outer wall of pipeline, the inner wall of fixed band is connected with the outer wall of positioning band, the support band is around set on the outer wall of cooler, the left and right sides of covering band inner wall are respectively connected with the outer wall of support band and fixed band, the positioning band, fixed band, support band and covering band cooperate pipeline and cooler to form chamber, the sealing detection assembly is connected between positioning band and fixed band, the strain gauge is connected on sealing detection assembly, the left side of sealing detection assembly is located in chamber, and the left end of sealing detection assembly monitors pipeline and cooler connection surface, and the temperature of fluid and airflow when leaking will drive sealing detection assembly to trigger strain gauge.

[0009] By the above scheme, the chamber covers the gap of the pipeline and cooler connection place, thereby on the one hand, the leaked toluene vapor is stored in the chamber to reduce the external leakage, achieving the purpose of improving the safety of the working environment, on the other hand, the sealing detection assembly and the strain gauge are in a stable environment, avoiding the misjudgment caused by environmental factors, thereby achieving the purpose of improving the detection accuracy.

[0010] Preferably, the inner walls of the positioning band, the fixed band, the support band and the covering band are covered with double-sided tape, and the lengths of the positioning band, the fixed band, the support band and the covering band are greater than the circumference of the outer wall of the pipeline and cooler connection surface.

[0011] By the above scheme, the length of the positioning band allows it to wrap around the outer wall of the pipeline and cooler connection surface once, thereby realizing that the sealing detection assembly can adapt to different sizes of the pipeline and cooler connection surface, improving the adaptability of the sealing detection assembly.

[0012] Preferably, the two ends of the positioning band and the support band are connected with transition sections, the transition sections are triangular, and the positioning band and the support band are made of fluorine rubber.

[0013] By the above scheme, the transition sections are triangular, and when the positioning band wraps around once, the tail can be smoothly overlapped through the triangular transition section, thereby reducing the gap of the overlapping end and improving the sealing effect of the chamber.

[0014] Preferably, the sealing detection assembly includes a positioning sheet, a connecting sheet, a sensing sheet and pins, the positioning sheet is connected between the positioning band and the fixed band, the connecting sheet is connected to the left side of the positioning sheet, the strain gauge is fixed on the connecting sheet, the sensing sheet is connected to the left side of the connecting sheet, the two pins are arranged in front and back on the right side of the positioning sheet, the pins are "L" shaped, and the lengths of the left and right ends of the two pins are different.

[0015] Preferably, the strain gauge is fixed on a connecting piece, and arc grooves are provided on both sides of a middle portion of the connecting piece.

[0016] Through the above solution, arc grooves are opened on both sides of the middle of the connecting piece, thereby forming a weak area in the middle of the connecting piece, so that the connecting piece mainly bends at the arc groove when subjected to force.

[0017] Preferably, the sensing piece is made of memory metal material and is wavy in shape.

[0018] Through the above scheme, the sensing piece is wavy. When the airflow passes through the sensing piece, the wavy bend increases the contact area between the airflow and the sensing piece, thereby realizing airflow monitoring. The temperature change caused by the leakage of toluene vapor will cause the memory metal material to expand, thereby causing the sensing piece to stretch. The change in the shape of the sensing piece will change the position of the center of gravity of the sealing detection component, thereby causing the connecting piece to deform, thereby realizing temperature monitoring.

[0019] Preferably, the position of the gap between the connecting surface of the pipeline and the cooler corresponds to the position of the trough of the sensor plate, and the chamber is filled with nitrogen.

[0020] Through the above scheme, the position of the trough of the sensor plate corresponds to the position of the gap between the pipe and the cooler connection surface, so that the leaked toluene gas mainly acts on the trough, and the trough is close to the pipe and the cooler connection surface, thereby improving the monitoring accuracy.

[0021] Preferably, a card slot is provided on the outer wall of the positioning belt, a wire slot is provided inside the positioning belt, a cable is connected to the wire slot, the card slot is communicated with the wire slot, and the width of the card slot is smaller than the thickness of the pin.

[0022] Through the above solution, the card slot is connected to the wire slot, which makes it easier to fill the cable into the wire slot. At the same time, the width of the card slot is smaller than the thickness of the pin. When the pin contacts the cable, the card slot can clamp and limit the pin, thereby improving the stability of the connection.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention solves the problem that when sensors are laid out, the circular outer walls of the pipe and the cooler will cause a gap between two adjacent sensors, thereby affecting the detection accuracy. By providing a wavy sensing sheet, when the airflow passes through the sensing sheet, the wavy bending increases the contact area between the airflow and the sensing sheet, thereby increasing the bending amplitude of the connecting sheet, thereby realizing the detection of airflow flow. The temperature when toluene vapor leaks will cause the temperature in the chamber to change, thereby causing the sensing sheet made of memory metal material to open. The change in the shape of the sensing sheet will change the position of the center of gravity of the connecting sheet, thereby causing the connecting sheet to bend, thereby realizing the detection of temperature changes. Through the dual detection of airflow and temperature, the purpose of improving the sealing detection accuracy of the connection surface between the pipe and the cooler is achieved.

[0025] 2. By setting up a chamber, the chamber wraps the connection surface between the pipeline and the cooler, so that when toluene leaks, the leaked toluene is stored in the chamber, thereby avoiding direct contact between toluene and personnel, thereby improving the safety of the working environment. At the same time, the setting of the chamber also puts the sealing detection component and the strain gauge in a stable environment, thereby avoiding accidental contact of the sealing detection component due to environmental factors, thereby improving the sealing detection accuracy of the connection surface between the pipeline and the cooler.

[0026] 3. By setting the positioning belt and the support belt, the positioning belt and the support belt can surround the pipe and the outer wall of the cooler, thereby realizing the adaptation of the sealing detection component to the sealing ports of coolers of different sizes, thereby improving the adaptability of the sealing detection component. At the same time, the setting of the double-sided tape makes it unnecessary to fix the positioning belt and the support belt on the cooler and the pipe, avoiding the structural weaknesses caused by the installation of the sensor and improving the safety of the cooler sealing port. Furthermore, the fit of the double-sided tape to the pipe and the outer wall of the cooler effectively improves the sealing of the chamber and effectively avoids the leakage of toluene. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the present invention after installation;

[0028] Figure 2 It is a schematic structural diagram of the present invention as a whole;

[0029] Figure 3 It is a structural schematic diagram of the transition section of the present invention;

[0030] Figure 4 This is a schematic structural diagram of the sealing detection component of the present invention;

[0031] Figure 5 For the present invention Figure 4 A magnified schematic diagram of point A;

[0032] Figure 6 It is a structural schematic diagram of the positioning belt part of the present invention;

[0033] Figure 7 This is a schematic diagram of the state of airflow detection according to the present invention;

[0034] Figure 8 This is a schematic diagram of the state of temperature detection of the present invention.

[0035] In the figure: 1. Cooler; 2. Pipe; 3. Positioning belt; 301. Card slot; 302. Wire duct; 303. Cable; 4. Fixing belt; 5. Support belt; 6. Covering belt; 7. Sealing detection component; 701. Positioning plate; 702. Connecting plate; 7021. Arc groove; 703. Sensor plate; 704. Pin; 8. Strain gauge; 9. Chamber; 10. Transition section; 11. Inflation valve. DETAILED DESCRIPTION

[0036] The following, in conjunction with the accompanying drawings of the embodiments of the present invention, clearly and completely describes the technical solutions of the embodiments of the present invention, making its working state and structural features more detailed. Obviously, the embodiments described are only partial embodiments of the present invention and are not complete embodiments. Based on the embodiments of the present invention, other embodiments obtained by ordinary technicians in this field without making any creative ideas are all within the scope of protection of the present invention.

[0037] See also Figures 1 to 8 The present invention provides a toluene cooler sealing detection component, the technical solution is as follows:

[0038] For details, please refer to Figures 1 to 8A toluene cooler sealing detection component is installed on the outer wall of the connection between the pipeline 2 and the cooler 1. The sealing detection component includes a positioning belt 3, a fixing belt 4, a supporting belt 5, a covering belt 6, a sealing detection component 7 and a strain gauge 8. The positioning belt 3 is wound on the outer wall of the pipeline 2, the inner wall of the fixing belt 4 is connected to the outer wall of the positioning belt 3, the supporting belt 5 is wound on the outer wall of the cooler 1, and the left and right sides of the inner wall of the covering belt 6 are respectively connected to the outer walls of the supporting belt 5 and the fixing belt 4. A one-way inflation valve 11 is provided on the surface of the covering belt 6. The positioning belt 3, the fixing belt 4 , the support belt 5 and the covering belt 6 cooperate with the pipe 2 and the cooler 1 to form a chamber 9, that is, the left wall of the positioning belt 3, the left wall of the fixing belt 4, the right wall of the support belt 5, the inner wall of the covering belt 6, the outer wall of the pipe 2 and the outer wall of the cooler 1 form the chamber 9. After the chamber 9 is formed, the nitrogen is filled into the chamber 9 through the inflation valve 11 (note that the filling concentration of the nitrogen in the chamber 9 needs to be regularly tested and replenished in time after it drops). The gap at the connection surface of the pipe 2 and the cooler 1 is in the chamber 9. When the connection surface of the pipe 2 and the cooler 1 leaks, the toluene vapor will leak first. Into the chamber 9, the sealing detection component 7 is connected between the positioning belt 3 and the fixing belt 4, the strain gauge 8 is connected to the sealing detection component 7, and the strain gauge 8 is in the chamber 9. When the sealing detection component 7 changes, the resistance value of the strain gauge 8 will change. The left side of the sealing detection component 7 is located in the chamber 9, and the left end of the sealing detection component 7 extends to the periphery of the connection surface between the pipe 2 and the cooler 1. The temperature and airflow when toluene leaks will drive the sealing detection component 7 to trigger the strain gauge 8 at different speeds, thereby realizing double detection. When the airflow triggers the sealing detection component 7, it means that the leakage point of toluene is within the range covered by the sealing detection component 7. At this time, by determining the position of the sealing detection component 7, the leakage point can be quickly locked. When the temperature change triggers two adjacent sealing detection components 7, it means that the toluene leakage point is between the two adjacent sealing detection components 7. Then, by locking the position between the two sealing detection components 7, the leakage point can be quickly locked. The double detection of temperature and airflow by the sealing detection component 7 effectively improves the monitoring accuracy of the sealing detection component.

[0039] By setting up a chamber 9, the chamber 9 covers the gap formed by the connecting surface of the pipe 2 and the cooler 1, and then when toluene leaks from the gap formed by the connecting surface of the pipe 2 and the cooler 1, the leaked toluene will be stored in the chamber 9, thereby avoiding direct contact between toluene vapor and personnel, and improving the safety of the working environment. At the same time, the setting of the chamber 9 allows the sealing detection component 7 and the strain gauge 8 to be in a stable environment, avoiding the sealing detection component 7 caused by air flow in the environment. False touch of the sealing detection component 7 is avoided, achieving the purpose of improving the detection accuracy. The filling of nitrogen isolates toluene from the air, thereby reducing the possibility of explosion caused by contact between toluene vapor and air. When the airflow triggers the sealing detection component 7, it will directly impact the sensor plate 703 to cause it to deform. Its signal characteristics are usually instantaneous. The deformation caused by the memory metal phase change caused by the temperature increase is relatively slow, and its signal characteristics are gently rising. By distinguishing the time, dual verification of airflow and temperature can be achieved.

[0040] As an embodiment of the present invention, refer to Figure 2 、 Figure 3 、 Figure 7 and Figure 8 , the inner walls of the positioning belt 3, the supporting belt 5 and the covering belt 6 are all covered with double-sided tape, and the outer wall of the positioning belt 3 is covered with double-sided tape, which is an industrial-grade toluene-resistant tape. When fixing, the inner wall of the positioning belt 3 fits with the pipe 2, and the inner wall of the supporting belt 5 fits with the cooler 1. The double-sided tape covered on the outer wall of the positioning belt 3 will fit with the inner wall of the fixing belt 4, and the double-sided tape on the inner wall of the covering belt 6 will fit with the outer wall of the fixing belt 4 and the supporting belt 5. The length of the positioning belt 3, the fixing belt 4, the supporting belt 5 and the covering belt 6 is greater than the circumference of the outer wall of the connecting surface of the pipe 2 and the cooler 1. Both ends of the positioning belt 3 and the supporting belt 5 are connected with a transition section 10, which is triangular. The tip of the transition section 10 connected to the positioning belt 3 is away from the positioning belt 3, and the tip of the transition section 10 connected to the support belt 5 is away from the support belt 5. The positioning belt 3 and the support belt 5 are fluoro The end of the support belt 5 will be attached to the head of the fixing belt 4, and the transition section 10 on the positioning belt 3 will make the transition between the tail of the positioning belt 3 and the head of the fixing belt 4 smooth, thereby effectively reducing the gap between the connection surface, thereby achieving the purpose of improving the sealing performance of the chamber 9 and avoiding the leakage of toluene vapor.

[0041] By setting the positioning band 3, the fixing band 4 and the supporting band 5, the length of the positioning band 3, the fixing band 4 and the supporting band 5 can be wrapped around the connecting gap between the pipe 2 and the cooler 1 once, so that the double-sided tape on the inner wall of the positioning band 3 is bonded with the outer wall of the fixing band 4, and the double-sided tape on the inner wall of the supporting band 5 can be bonded with the outer wall of the supporting band 5. The length of the positioning band 3, the fixing band 4 and the supporting band 5 is set, thereby realizing that the sealing detection assembly can be adapted to the connecting surface of coolers 1 and pipes 2 of different sizes, improving the adaptability of the sealing detection assembly. On the other hand, the setting of the double-sided tape makes the fixing of the positioning band 3 and the supporting band 5 not need to drill holes, weld or install any flanges on the outer wall of the connecting surface of the cooler 1 and the pipe 2, avoiding the introduction of new leakage points or structural weak points due to the installation of the sensor, improving the safety of the sealing port of the cooler 1. At the same time, the adhesion of the double-sided tape with the outer wall of the pipe 2 and the cooler 1 effectively improves the sealing property of the chamber 9, avoiding the external leakage of toluene vapor.

[0042] As an embodiment of the present application, refer to Figure 4 , Figure 5 , Figure 7 and Figure 8, the sealing detection component 7 includes a positioning piece 701, a connecting piece 702, a sensing piece 703 and a pin 704, the positioning piece 701 is connected between the positioning belt 3 and the fixing belt 4, the positioning piece 701 is connected to the double-sided tape on the outer wall of the positioning belt 3, and the positioning piece 701 is located on the left side of the gap between the positioning belt 3 and the fixing belt 4, the right end of the connecting piece 702 is fixedly connected to the left side of the positioning piece 701, the left side of the connecting piece 702 is a free end, the sensing piece 703 is connected to the left side of the connecting piece 702, that is, connected to the free end of the connecting piece 702, when toluene vapor acts on the gap between the adjacent sensing pieces 703, when the temperature of the sensing piece 703 rises, the sensing piece 7 03 opens, the left end of the sensor sheet 703 stretches, and then the center of gravity position of the sensor sheet 703 changes, driving the connecting sheet 702 to bend and deform, thereby causing the strain gauge 8 to deform. Therefore, when the strain gauges 8 on multiple sensor sheets 703 are triggered, the surface leakage point is located at the gap between the strain gauges 8. The projection of the sensor sheet 703 on the pipe 2 and the cooler 1 covers a gap between the connecting surface of the pipe 2 and the cooler 1. Then, when the connecting surface of the pipe 2 and the cooler 1 leaks, the toluene vapor will directly act on the lower end surface of the sensor sheet 703, causing the left end of the sensor sheet 703 to rotate away from the gap between the connecting surface of the pipe 2 and the cooler 1. Therefore, the single The sensing piece 703 is triggered as a leak point facing the sensing piece 703. At this time, the leak point can be known by reading the position of the sensing piece 703. There are two pins 704. The two pins 704 are arranged front and back on the right side of the positioning piece 701. The pins 704 are fixedly connected to the positioning piece 701 and in contact with the cable 303. The strain gauge 8 is fixed on the connecting piece 702. In addition to the strain gauge 8 for detecting bending on the connecting piece 702, a strain gauge 8 for temperature compensation is also pasted on the non-deformation area near the positioning piece 701. When the ambient temperature changes, the resistance values ​​of the two strain gauges 8 produce the same change. Since the two strain gauges 8 are located The voltage changes on adjacent sides cancel each other out at the output end of the bridge, so that the output signal is not affected by the ambient temperature, and it only outputs the net strain signal caused by the mechanical deformation of the connecting piece 702. The two strain gauges 8 serve as the two dynamic resistance arms of the Wheatstone bridge circuit. The Wheatstone bridge circuit is a half-bridge circuit. The external power supply provides a stable voltage to the two strain gauges 8 through the Wheatstone bridge circuit, and converts the resistance change caused by the deformation of the strain gauge 8 in the deformation area into a voltage signal. The pin 704 is "L"-shaped, and the long arms of the two pins 704 are of different lengths and are respectively connected to the two cables 303. Arc grooves 7021 are opened on both sides of the middle of the connecting piece 702.

[0043] By providing the arc groove 7021, the setting of the arc groove 7021 forms a weak area in the middle of the connecting piece 702, and then when the connecting piece 702 is deformed by the influence of external force, the connecting piece 702 is mainly deformed around the arc groove 7021, thereby effectively increasing the deformation amplitude of the arc groove 7021 on the connecting piece 702. The connecting piece 702 transfers the deformation amplitude to the strain gauge 8, thereby aggravating the deformation amplitude of the strain gauge 8. That is, when the arc groove 7021 is not provided, the bending of the connecting piece 702 is an overall bending, and after the arc groove 7021 is provided, the bending point of the connecting piece 702 is concentrated at the arc groove 7021, and then the bending point of the strain gauge 8 is also concentrated at the arc groove 7021, which makes it easy for the monitoring equipment to compare the difference before and after deformation, thereby improving the alarm accuracy.

[0044] As an embodiment of the present invention, refer to Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The sensor sheet 703 is made of memory metal. The temperature of the outer wall of the connection surface between the toluene cooler 1 and the pipeline 2 is 25-40°C under normal working conditions, while the temperature of the toluene vapor can reach above 80°C when leaking. Therefore, the sensor sheet 703 is made of nickel-titanium-based shape memory alloy, and its phase change starting temperature is set at 60-70°C. When the leakage point is between the two sensor sheets 703, the temperature of the leakage point will cause the sensor sheet 703 to open due to heat, that is, the distance between the two ends of the sensor sheet 703 increases, and then the center of gravity position of the connecting sheet 702 in the stable state changes, causing the connecting sheet 702 to bend and transmit the signal to the strain gauge 8. At this time, by reading the positions of the two sensor sheets 703, the leakage can be known. At the position of the point, the sensing sheet 703 is wavy. When the airflow passes through the sensing sheet 703, the wavy bending increases the contact area between the airflow and the sensing sheet 703, thereby increasing the bending amplitude of the connecting sheet 702, thereby increasing the sensor display difference and improving the detection accuracy. The position of the gap between the pipe 2 and the cooler 1 connection surface corresponds to the position of the trough of the sensing sheet 703, and the position of the trough is close to the gap between the pipe 2 and the cooler 1 connection surface, which facilitates detection. A card slot 301 is provided on the outer wall of the positioning belt 3, and a wire groove 302 is provided inside the positioning belt 3. A cable 303 is connected to the wire groove 302. The card slot 301 is connected to the wire groove 302, and the width of the card slot 301 is less than the thickness of the pin 704.

[0045] Through setting the clamping groove 301, the clamping groove 301 is communicated with the wire slot 302, and then the cable 303 can be filled into the wire slot 302 through the clamping groove 301 during assembly, which reduces the assembly difficulty, and the width value of the clamping groove 301 is smaller than the thickness value of the pin 704, and then when the pin 704 extends into the clamping groove 301, the clamping groove 301 will be deformed and clamp the pin 704, thereby improving the stability of the connection between the pin 704 and the cable 303, and the adhesion of the double-sided tape further improves the stability of the connection between the pin 704 and the cable 303.

[0046] Assembly work: first, the positioning belt 3 is unfolded, and the cable 303 is placed into the wire slot 302 through the clamping groove 301, the outer wall of the positioning belt 3 is attached to the double-sided tape, after the attachment is completed, the sealing detection assembly 7 is installed, the two pins 704 are inserted into the two clamping grooves 301 respectively, when the positioning sheet 701 is attached to the outer wall of the positioning belt 3, the pin 704 is in contact with the cable 303, the fixing belt 4 is attached to the outer wall of the positioning belt 3, at this time, the outer wall of the positioning belt 3 is attached to the double-sided tape, the head of the positioning belt 3 is attached to the pipeline 2, so that the positioning belt 3 rotates around the pipeline 2 one turn, at this time, the sealing detection assembly 7 uniformly covers the connection surface between the pipeline 2 and the cooler 1, after the positioning belt 3 rotates around the pipeline 2 one turn, the tail of the positioning belt 3 is attached to the outer wall of the fixing belt 4 through the transition end on the positioning belt 3, the inner wall of the supporting belt 5 is attached to the double-sided tape, and the supporting belt 5 is wrapped around the outer wall of the cooler 1, the inner wall of the covering belt 6 is attached to the double-sided tape, and the covering belt 6 is attached to the outer walls of the supporting belt 5 and the fixing belt 4, before the head and tail of the covering belt 6 overlap, nitrogen is filled in the chamber 9;

[0047] During monitoring, when toluene leaks from the connection surface between the cooler 1 and the pipeline 2, the gas will act on the sensing sheet 703, so that the left end of the sensing sheet 703 moves away from the connection surface between the pipeline 2 and the cooler 1, thereby causing the strain sheet 8 to bend and trigger an alarm, when the leakage point is between the two sensing sheets 703, the temperature of the leakage point will cause the sensing sheet 703 to heat and open, thereby increasing the distance between the two ends of the sensing sheet 703, the center of gravity of the connecting sheet 702 changes in the stable state, causing the connecting sheet 702 to bend, and transmitting a signal to the strain sheet 8, at the same time, the chamber 9 is affected by the toluene leaked, and the chamber 9 is inflated, thereby assisting the staff in prompting.

[0048] Although the embodiments of the present application have been described, those skilled in the art can make changes and modifications to the embodiments based on the understanding of the principles and spirits of the present application, and obtain other effects, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A toluene cooler sealing detection assembly, mounted on the outer wall of the connection between the pipeline (2) and the cooler (1), characterized in that: The invention comprises a positioning belt (3), a fixing belt (4), a supporting belt (5), a covering belt (6), a sealing detection component (7) and a strain gauge (8), wherein the positioning belt (3) is wound around the outer wall of the pipeline (2), the inner wall of the fixing belt (4) is connected to the outer wall of the positioning belt (3), the supporting belt (5) is wound around the outer wall of the cooler (1), the left and right sides of the inner wall of the covering belt (6) are respectively connected to the outer walls of the supporting belt (5) and the fixing belt (4), and the positioning belt (3), the fixing belt (4), the supporting belt ( 5) and the covering belt (6) cooperate with the pipeline (2) and the cooler (1) to form a chamber (9), the sealing detection component (7) is connected between the positioning belt (3) and the fixing belt (4), the strain gauge (8) is connected to the sealing detection component (7), the left side of the sealing detection component (7) is located in the chamber (9), and the left end of the sealing detection component (7) monitors the connection surface between the pipeline (2) and the cooler (1), and when leakage occurs, the temperature of the fluid and the airflow will drive the sealing detection component (7) to trigger the strain gauge (8).

2. A toluene cooler sealing detection assembly according to claim 1, characterized in that: The inner walls of the positioning belt (3), the supporting belt (5) and the covering belt (6) are all covered with double-sided adhesive tape, and the outer wall of the positioning belt (3) is covered with double-sided adhesive tape. The lengths of the positioning belt (3), the fixing belt (4), the supporting belt (5) and the covering belt (6) are greater than the circumference of the outer wall of the connection surface between the pipeline (2) and the cooler (1).

3. A toluene cooler sealing detection assembly according to claim 2, characterized in that: Both ends of the positioning belt (3) and the supporting belt (5) are connected with a transition section (10), and the transition section (10) is triangular. The positioning belt (3) and the supporting belt (5) are made of fluororubber material.

4. A toluene cooler sealing detection assembly according to claim 3, characterized in that: The sealing detection component (7) comprises a positioning piece (701), a connecting piece (702), a sensing piece (703) and a pin (704); the positioning piece (701) is connected between the positioning belt (3) and the fixing belt (4); the connecting piece (702) is connected to the left side of the positioning piece (701); the strain gauge (8) is fixed on the connecting piece (702); the sensing piece (703) is connected to the left side of the connecting piece (702); the two pins (704) are arranged front and back on the right side of the positioning piece (701); the pins (704) are in an "L" shape, and the lengths of the left and right ends of the two pins (704) are different.

5. A toluene cooler sealing detection assembly according to claim 4, characterized in that: The strain gauge (8) is fixed on the connecting piece (702), and arc-shaped grooves (7021) are provided on both sides of the middle of the connecting piece (702).

6. A toluene cooler sealing detection assembly according to claim 4, characterized in that: The sensing piece (703) is made of a memory metal material and is wavy in shape.

7. A toluene cooler sealing detection assembly according to claim 6, characterized in that: The position of the gap between the connection surface of the pipeline (2) and the cooler (1) corresponds to the position of the trough of the induction plate (703), and the chamber (9) is filled with nitrogen.

8. The toluene cooler sealing detection assembly according to claim 4, characterized in that: The outer wall of the positioning belt (3) is provided with a card slot (301), the interior of the positioning belt (3) is provided with a wire slot (302), a cable (303) is connected to the wire slot (302), the card slot (301) is connected to the wire slot (302), and the width of the card slot (301) is smaller than the thickness of the pin (704).

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