Early warning device for chemical plant risk management and control

Abstract

The utility model relates to an early warning device for chemical plant risk management and control. The early warning device comprises an elastic sleeve, a fixing part, a circular ring, a driving part and an alarm. According to the technical scheme, by arranging the sealing cavity, the sealing cavity can be gradually expanded under the action of air pressure when the chemical pipeline leaks, the position, where chemical gas leaks, of the sealing cavity can protrude relative to other positions, and therefore when the driving part drives the circular ring to move to the expanded sealing cavity in the length direction of the chemical pipeline, the sealing cavity is sealed. When the chemical pipeline leaks gas, one end face of the circular ring abuts against the expanded sealing cavity, the alarm is powered on and gives an alarm, and therefore a worker is reminded to handle the gas leakage position on the chemical pipeline in time, the possibility that chemical gas leaks into air can be reduced, and harm to the body of the worker is reduced.

Description

Technical Field

[0001] This utility model relates to the field of risk management technology in chemical plants, specifically to an early warning device for risk management in chemical plants. Background Technology

[0002] Risk management refers to the entire process of identifying, assessing, and controlling potential risks. For chemical plants, risk management aims to reduce potential accidents and hazards during production to ensure the health and safety of employees and the normal operation of production lines.

[0003] During the daily production process of a chemical plant, there is a risk of leakage in chemical pipelines. After a prolonged leakage, a large amount of chemical gas will be mixed into the air of the chemical plant. The harmful substances contained in the chemical gas will enter the body of the workers through the air and cause harm to their health. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an early warning device for risk management in chemical plants, so as to solve the problem that after a chemical pipeline equipment leaks, the waste gas that overflows for a long time mixes into the air, thereby causing the harmful substances contained in the waste gas to enter the body of workers and cause harm to their health.

[0005] This utility model is achieved through the following technical solution:

[0006] An early warning device for risk management in a chemical plant includes an elastic sleeve, a fixing part, a ring, a driving part, and an alarm. The elastic sleeve is used to wrap around a chemical pipeline, and the fixing part is used to fix the elastic sleeve to the chemical pipeline so that multiple sealing cavities are formed between the elastic sleeve and the surface of the chemical pipeline along the length of the chemical pipeline. The ring is arranged around the elastic sleeve, and the driving part is used to drive the ring to move along the length of the chemical pipeline. The alarm is used to connect the power supply and sound an alarm after one end face of the ring abuts against the expanded sealing cavity.

[0007] Furthermore, the driving unit includes a support unit and a transmission unit. The ring is disposed on the support unit in a manner that allows it to slide along the length direction of the chemical pipeline. The transmission unit is used to drive the ring to move along the length direction of the chemical pipeline.

[0008] Furthermore, the support includes a support frame, a translation rod, a sleeve, and a connecting rod. The translation rod is fixed on the support frame and is arranged along the length of the chemical pipeline. The sleeve is slidably fitted onto the translation rod. One end of the connecting rod is fixedly connected to the sleeve, and the other end of the connecting rod is connected to the ring.

[0009] Furthermore, the ring includes a first ring body and a second ring body. The first ring body is fixedly connected to the other end of the connecting rod. There are two second ring bodies, which are respectively disposed on both sides of the first ring body along the length of the chemical pipeline. The second ring bodies are spaced a certain distance from the first ring body and are connected to the first ring body in a way that allows them to slide along the length of the chemical pipeline. A first electrode is connected to the side of the second ring body facing the first ring body, and a second electrode is connected to the side of the second ring body facing the first ring body at a position corresponding to the first electrode. The alarm is used to turn on the power and issue an alarm when the first electrode contactes the corresponding second electrode.

[0010] Furthermore, the second ring body is provided with multiple sliding rods along the length of the chemical pipeline on the side facing the first ring body. The surface of the first ring body is recessed to form a sliding groove corresponding to the position of each sliding rod. The sliding rod is slidably engaged in the corresponding sliding groove. A first spring is sleeved on the sliding rod, and the two ends of the first spring are fixedly connected to the first ring body and the second ring body respectively.

[0011] Furthermore, according to the claim 1, the early warning device for risk control in a chemical plant is characterized in that: the transmission part includes a first abutting part, a first limiting block, a second abutting part, and a first driving assembly; the first abutting part is disposed on the connecting rod; the first limiting block is fixed on the translation rod and located on one side of the sleeve; the second abutting part is used to abut against the first abutting part and push the first abutting part toward the first limiting block; the second abutting part is also used to disengage from the first abutting part after the sleeve abuts against the first limiting block; and the first driving assembly is used to drive the second abutting part to move toward the first limiting block.

[0012] Furthermore, the transmission unit also includes a third abutment, a second limiting block, a fourth abutment, and a second driving assembly. The third abutment is disposed on the connecting rod, the second limiting block is fixed on the translation rod and located on the other side of the sleeve, the fourth abutment is used to abut against the third abutment and push the third abutment toward the second limiting block, the fourth abutment is also used to disengage from the third abutment after the sleeve abuts against the second limiting block, and the second driving assembly is used to drive the fourth abutment to move toward the second limiting block;

[0013] When the first contact part abuts against the second contact part, the fourth contact part is in a state of being detached from the third contact part; when the fourth contact part abuts against the third contact part, the second contact part is in a state of being detached from the first contact part.

[0014] Furthermore, the first abutting part includes a first crossbar, which faces the first driving assembly and is arranged perpendicular to the length of the chemical pipeline. One end of the first crossbar is connected to the connecting rod, and the other end has an inclined surface facing the first limiting block. The second abutting part includes a second fixing block, a second crossbar, a second telescopic rod, and a second spring. The second fixing block is connected to the first driving assembly. The second telescopic rod and the second crossbar both face the chemical pipeline and are arranged perpendicular to the length of the chemical pipeline. The two ends of the second telescopic rod are respectively connected to the second fixing block and one end of the second crossbar. The other end of the second crossbar has an inclined surface facing the second limiting block. The second spring is sleeved around the second telescopic rod, and the two ends of the second spring are respectively fixed to the second fixing block and the second crossbar. The inclined surfaces of the second crossbar and the first crossbar can slide together.

[0015] The third contact part includes a third crossbar, which faces the second drive assembly and is arranged perpendicular to the length of the chemical pipeline. One end of the third crossbar is connected to the connecting rod, and the other end has an inclined surface facing the second limiting block. The fourth contact part includes a fourth fixing block, a fourth crossbar, a fourth telescopic rod, and a fourth spring. The fourth fixing block is connected to the second drive assembly. The fourth telescopic rod and the fourth crossbar both face the chemical pipeline and are arranged perpendicular to the length of the chemical pipeline. The two ends of the fourth telescopic rod are respectively connected to one end of the fourth fixing block and one end of the fourth crossbar. The other end of the fourth crossbar has an inclined surface facing the first limiting block. The fourth spring is sleeved around the fourth telescopic rod, and the two ends of the fourth spring are respectively fixed to the fourth fixing block and the fourth crossbar. The inclined surfaces of the fourth crossbar and the third crossbar can slide together.

[0016] Furthermore, the first limiting block has a first through hole at its center, and the translation rod can pass through the first through hole and slide to connect with the first limiting block; the second limiting block has a second through hole at its center, and the translation rod can pass through the second through hole and slide to connect with the second limiting block.

[0017] Furthermore, the first limiting block is provided with a first threaded hole, the first threaded hole connects the outer side of the first limiting block with the first through hole, and a first threaded rod that can be screwed into the first threaded hole is provided, the first threaded rod can pass through the first threaded hole and abut against the translation rod;

[0018] The second limiting block is provided with a second threaded hole, which connects the outer side of the second limiting block with the second through hole. A second threaded rod that can be screwed into the second threaded hole is provided, and the second threaded rod can pass through the second threaded hole and abut against the translation rod.

[0019] The beneficial effects of this utility model are as follows:

[0020] This early warning device for risk management in chemical plants features a sealed cavity. When a chemical pipeline leaks, the sealed cavity gradually expands under gas pressure. The sealed cavity at the location of the leaking chemical gas bulges out relative to other locations. When the drive unit moves the ring along the length of the chemical pipeline to the expanded sealed cavity, one end of the ring is held in place by the expanded sealed cavity, activating the alarm and triggering an alarm. This alerts staff to promptly address the leak in the chemical pipeline, reducing the possibility of chemical gas leaking into the air and minimizing harm to workers.

[0021] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the early warning device for risk control in chemical plants according to this utility model;

[0023] Figure 2 This utility model Figure 1 A magnified view of part A in the image;

[0024] Figure 3 This is the circuit diagram of the alarm device of this utility model;

[0025] Figure 4 This is a schematic diagram of the combined structure of the first contact part, the second contact part, and the first transmission belt according to an embodiment of the present utility model.

[0026] Figure 5 This is a schematic diagram of the combined structure of the third contact part, the fourth contact part, and the second transmission belt in an embodiment of the present invention.

[0027] In the diagram: 1. Elastic sleeve; 2. Fixing part; 3. Support frame; 4. Translation rod; 5. Sleeve; 6. Connecting rod; 71. First ring; 72. Second ring; 81. First pole piece; 82. Second pole piece; 91. First spring; 92. Second spring; 94. Fourth spring; 10. Sliding rod; 111. First motor; 112. Second motor; 122. Second fixing block; 124. Fourth fixing block; 132. Second telescopic rod; 134. Four telescopic rods; 141, First crossbar; 142, Second crossbar; 143, Third crossbar; 144, Fourth crossbar; 151, First limiting block; 152, Second limiting block; 161, First pulley; 162, Second pulley; 171, First transmission belt; 172, Second transmission belt; 181, First shaft; 182, Second shaft; 191, First threaded rod; 192, Second threaded rod; 20, Power supply; 21, Alarm; Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the above description of this utility model, it should be noted that the terms "one side," "the other side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "identical" do not imply that components must be absolutely identical; minor differences are permissible. The term "perpendicular" simply means that the positional relationship between components is more perpendicular than "parallel," not that the structure must be perfectly perpendicular; a slight tilt is acceptable.

[0033] Please see Figure 1-5 This utility model provides a technical solution: an early warning device for risk control in a chemical plant, comprising an elastic sleeve 1, a fixing part 2, a ring, a driving part, and an alarm 21. The elastic sleeve 1 can be made of chemical corrosion-resistant rubber, and the alarm 21 can be a YS-01A audible and visual alarm. The elastic sleeve 1 is used to wrap around a chemical pipeline, and the fixing part 2 is used to fix the elastic sleeve 1 to the chemical pipeline so that multiple sealing cavities are formed between the elastic sleeve 1 and the surface of the chemical pipeline along the length of the chemical pipeline. The ring is arranged around the elastic sleeve 1, and the driving part is used to drive the ring to move along the length of the chemical pipeline. The alarm 21 is used to connect the power supply 20 and issue an alarm after one end face of the ring abuts against the expanded sealing cavity.

[0034] The early warning device for risk control in chemical plants described in this utility model is installed after the chemical pipeline. The elastic sleeve 1 is wrapped around the surface of the chemical pipeline. The elastic sleeve 1 is fixed to the surface of the chemical pipeline by the fixing part 2. Multiple sealing cavities are formed between the elastic sleeve 1 and the surface of the chemical pipeline along the length of the chemical pipeline. The ring is arranged around the elastic sleeve 1.

[0035] When using the early warning device for risk control in chemical plants as described in the utility model, the ring is driven to move along the length of the chemical pipeline by the drive unit. If there is no air leakage in the chemical pipeline, each sealed chamber will not be filled with air and expand. The sealed chamber will not expand and will not block the movement of the ring. That is, the end of the ring will not abut against the sealed chamber, and the ring can move smoothly along the length of the chemical pipeline.

[0036] When a leak occurs at a location on a chemical pipeline corresponding to a specific sealed cavity, the leaking gas enters the cavity. This cavity gradually expands under pressure, meaning the elastic sleeve 1 expands at the location corresponding to that cavity. This causes the sealed cavity to bulge relative to other locations. When the drive unit moves the ring along the length of the chemical pipeline to the expanded sealed cavity, the expanded cavity blocks the ring, with one end of the ring pressing against it. At this point, the alarm 21 activates the power supply 20 and sounds an alarm to alert personnel to promptly address the leak in the chemical pipeline.

[0037] After a period of time, the early warning device for risk control in chemical plants described in this utility model can remind staff to deal with the leak in the chemical pipeline in a timely manner, which can reduce the possibility of chemical gas leaking into the air and reduce the harm to the staff.

[0038] In this embodiment, the fixing part 2 includes multiple stainless steel hose clamps, which are spaced apart along the length of the chemical pipeline. These hose clamps securely fasten the elastic sleeve 1, which is wrapped around the chemical pipeline, to the pipeline. A sealing cavity is formed between the portion of the elastic sleeve 1's wall between each pair of adjacent hose clamps and the outer surface of the chemical pipeline. With this structure, the fixing part 2 can fix the elastic sleeve 1 to the chemical pipeline, thereby forming multiple sealing cavities arranged along the length of the chemical pipeline between the elastic sleeve 1 and the surface of the chemical pipeline.

[0039] In this embodiment: the driving unit includes a support unit and a transmission unit. The ring is disposed on the support unit in a manner that allows it to slide along the length direction of the chemical pipeline. The transmission unit is used to drive the ring to move along the length direction of the chemical pipeline. With this structure, the driving unit can drive the ring to move along the length direction of the chemical pipeline.

[0040] In this embodiment: the support part includes a support frame 3, a translation rod 4, a sleeve 5 and a connecting rod 6. The translation rod 4 is fixed on the support frame 3 and is arranged along the length of the chemical pipeline. The sleeve 5 is slidably fitted on the translation rod 4. One end of the connecting rod 6 is fixedly connected to the sleeve 5, and the other end of the connecting rod 6 is connected to the ring.

[0041] Since the sleeve 5 is slidably fitted onto the translation rod 4, which is arranged along the length of the chemical pipeline, the sleeve 5 can move along the length of the chemical pipeline on the translation rod 4. Since one end of the connecting rod 6 is fixedly connected to the sleeve 5, and the other end of the connecting rod 6 is connected to the ring, the ring can move along the length of the chemical pipeline on the translation rod 4. Therefore, the ring can be slidably mounted on the support portion along the length of the chemical pipeline.

[0042] In this embodiment: the ring includes a first ring body 71 and a second ring body 72. The first ring body 71 is fixedly connected to the other end of the connecting rod 6. There are two second ring bodies 72, which are respectively arranged on both sides of the first ring body 71 along the length of the chemical pipeline. The second ring bodies 72 are spaced a certain distance from the first ring body 71 and are connected to the first ring body 71 in a way that allows them to slide along the length of the chemical pipeline. A first electrode 81 is connected to the side of the second ring body 72 facing the first ring body 71, and a second electrode 82 is connected to the side of the second ring body 72 facing the first ring body 71 at a position corresponding to the first electrode 81. The alarm 21 is used to turn on the power supply 20 and issue an alarm when the first electrode 81 comes into contact with the corresponding second electrode 82.

[0043] As the ring moves along the length of the chemical pipeline, the first ring 71 and the second ring 72 move simultaneously. When a leak occurs in the chemical pipeline, causing a sealing cavity to bulge, the second ring 72 on the side closer to the bulging sealing cavity will abut against the sealing cavity during its translational movement and stop moving due to the obstruction of the bulging sealing cavity. The first ring 71 and the second ring 72 on the other side continue to move towards the second ring 72 on the side closer to the bulging sealing cavity under the drive of the connecting rod 6, until the first electrode 81 connected to the first ring 71 and the second electrode 82 on the second ring 72 on the side closer to the bulging sealing cavity come into contact. At this time, the alarm 21 is powered on by the power supply 20 and sounds an alarm. With this structure, the alarm 21 can be powered on by the power supply 20 and sound an alarm after one end face of the ring abuts against the expanded sealing cavity.

[0044] In this embodiment, the first electrode 81 is electrically connected to the positive terminal of the power supply 20, the second electrode 82 is electrically connected to the positive terminal of the alarm 21, and the negative terminal of the alarm 21 is connected to the negative terminal of the power supply 20. With this structure, the alarm 21 can turn on the power supply 20 and issue an alarm when the first electrode 81 and the corresponding second electrode 82 come into contact.

[0045] In this embodiment: the second ring body 72 is provided with multiple sliding rods 10 along the length of the chemical pipeline on the side facing the first ring body 71. The surface of the first ring body 71 is recessed to form a sliding groove corresponding to the position of each sliding rod 10. The sliding rod 10 is slidably engaged in the corresponding sliding groove. A first spring 91 is sleeved on the sliding rod 10. The two ends of the first spring 91 are fixedly connected to the first ring body 71 and the second ring body 72 respectively.

[0046] Since the second ring body 72 is provided with multiple sliding rods 10 along the length of the chemical pipeline on the side facing the first ring body 71, and the surface of the first ring body 71 is recessed to form a sliding groove corresponding to the position of each sliding rod 10, the sliding rod 10 slides in the corresponding sliding groove. With this structure, the second ring body 72 can be connected to the first ring body 71 in a way that allows it to slide along the length of the chemical pipeline.

[0047] When staff receive an alarm and handle the situation on-site, they can push the ring away from the raised sealing cavity to release it from contact with the cavity. Since a spring is provided between the first ring 71 and the second ring 72, after the resistance to the second ring 72 is released, the second ring 72 is reset by the rebound force, thereby resetting the first electrode 81 and the second electrode 82. That is, the first electrode 81 is separated from the corresponding second electrode 82, and the alarm 21 stops emitting an alarm. With this structure, it is easy for staff to stop the alarm 21 when they receive an alarm and handle the situation on-site.

[0048] In this embodiment: the transmission part includes a first abutting part, a first limiting block 151, a second abutting part, and a first driving assembly. The first abutting part is disposed on the connecting rod 6. The first limiting block 151 is fixed on the translation rod 4 and located on one side of the sleeve 5. The second abutting part is used to abut against the first abutting part and push the first abutting part toward the first limiting block 151. The second abutting part is also used to disengage from the first abutting part after the sleeve 5 abuts against the first limiting block 151. The first driving assembly is used to drive the second abutting part to move toward the first limiting block 151.

[0049] When using the early warning device for risk control in a chemical plant as described in this utility model, the first driving component drives the second abutment to move toward the first limiting block 151. When the second abutment abuts against the first abutment and pushes the first abutment toward the first limiting block 151, the first abutment drives the connecting rod 6, the ring, and the sleeve 5 to move toward the first limiting block 151. The first limiting block 151 is used to limit the distance the second abutment can move in the direction of the first limiting block 151. After the sleeve 5 abuts against the first limiting block 151, the second abutment disengages from the first abutment and stops pushing the first abutment to move, thereby limiting the movement range of the ring. With this structure, the transmission unit can drive the ring to move along the length of the chemical pipeline.

[0050] In this embodiment, the first drive assembly includes a first pulley 161, a first transmission belt 171, and a first motor 111. The first motor 111 can be an asynchronous motor of model YB2-180M-2. There are two first pulleys 161, which are located on one side of the chemical pipeline. The first pulleys 161 are horizontally arranged, and the line connecting the centers of the two first pulleys 161 is parallel to the length direction of the chemical pipeline. The first transmission belt 171 is sleeved on the outer edge of the two first pulleys 161, and the first transmission belt 171 can drive the two first pulleys 161 to rotate in the same direction. One first pulley 161 is fixedly connected to the output shaft of the first motor 111, and the first motor 111 is fixedly mounted on the support frame 3. The other first pulley 161 is rotatably connected to the support frame 3. The second abutment is fixed to the outer side of the first transmission belt 171. Here, the outer side of the first transmission belt 171 refers to the side of the first transmission belt 171 facing away from the center of the area it encloses. In the following description, the outer surface of the first transmission belt 171 will have this meaning.

[0051] When the first motor 111 is running, it drives one of the first pulleys 161 to rotate. The other first pulley 161 is linked to the first pulley 161 via the first transmission belt 171. The portion of the first transmission belt 171 near the chemical pipeline moves in the forward direction, i.e., the portion of the first transmission belt 171 near the chemical pipeline moves towards the first limiting block 151. When the second abutment moves onto the portion of the first transmission belt 171 near the chemical pipeline, the second abutment can move towards the direction of the first limiting block 151. With this structure, the first drive assembly can drive the second abutment to move towards the first limiting block 151.

[0052] In this embodiment, a first bearing is fixed on the support frame 3, and a first shaft 181 is fixed in the bearing hole of the first bearing. The first shaft 181 is arranged vertically, and the other first pulley 161 is fixedly connected to the first shaft 181. With this structure, the other first pulley 161 can be rotatably connected to the support frame 3.

[0053] In this embodiment: the transmission unit further includes a third abutment, a second limiting block 152, a fourth abutment, and a second driving assembly. The third abutment is disposed on the connecting rod 6. The second limiting block 152 is fixed on the translation rod 4 and located on the other side of the sleeve 5. The fourth abutment is used to abut against the third abutment and push the third abutment toward the second limiting block 152. The fourth abutment is also used to disengage from the third abutment after the sleeve 5 abuts against the second limiting block 152. The second driving assembly is used to drive the fourth abutment to move toward the second limiting block 152.

[0054] When the first contact portion abuts against the second contact portion, the fourth contact portion is in a state of being disengaged from the third contact portion; when the fourth contact portion abuts against the third contact portion, the second contact portion is in a state of being disengaged from the first contact portion; the first driving component is further configured to drive the second contact portion to abut against the first contact portion after the fourth contact portion is disengaged from the third contact portion, and the second driving component is further configured to drive the fourth contact portion to abut against the third contact portion after the second contact portion is disengaged from the first contact portion.

[0055] After the second abutment part disengages from the first abutment part, the second driving component drives the fourth abutment part to abut against the third abutment part and moves the fourth abutment part toward the second limiting block 152. The fourth abutment part pushes the third abutment part toward the second limiting block 152, and the third abutment part drives the connecting rod 6, the ring, and the sleeve 5 to move toward the second limiting block 152. At this time, the second abutment part is in a state of disengagement from the first abutment part. The second limiting block 152 is used to limit the distance the fourth abutment part can translate in the direction of the second limiting block 152. After the sleeve 5 abuts against the second limiting block 152, the fourth abutment part disengages from the third abutment part and stops pushing the third abutment part to move.

[0056] After the fourth abutment disengages from the third abutment, the first driving assembly drives the second abutment to abut against the first abutment and moves the second abutment toward the first limiting block 151. The second abutment abuts against the first abutment and pushes the first abutment toward the first limiting block 151. The first abutment drives the connecting rod 6, the ring, and the sleeve 5 to move toward the first limiting block 151. At this time, the fourth abutment is disengaged from the third abutment. After the sleeve 5 abuts against the first limiting block 151, the second abutment disengages from the first abutment and stops pushing the first abutment to move...

[0057] By continuously repeating the above process, the transmission unit can drive the ring to reciprocate along the length of the chemical pipeline; that is, the drive unit can drive the ring to reciprocate along the length of the chemical pipeline. This enables the early warning device for risk control in chemical plants described in this invention to automatically and continuously detect chemical pipelines.

[0058] In this embodiment, the second drive assembly includes a second pulley 162, a second transmission belt 172, and a second motor 112. The second motor 112 can be an asynchronous motor of model YB2-180M-2. There are two second pulleys 162, which are located on one side of the chemical pipeline. The two pulleys 162 are horizontally arranged, and the line connecting the centers of the two pulleys 162 is parallel to the length direction of the chemical pipeline. The second transmission belt 172 is sleeved on the outer edge of the two pulleys 162, and the second transmission belt 172 can drive the two pulleys 162 to rotate in the same direction. One pulley 162 is fixedly connected to the output shaft of the second motor 112, and the second motor 112 is fixedly mounted on the support frame 3. The other pulley 162 is rotatably connected to the support frame 3. The second abutment is fixed to the outer side of the second transmission belt 172, which refers to the side of the second transmission belt 172 that faces away from the center of the area it encloses. In the following description, the outer surface of the second drive belt 172 will be used for this purpose.

[0059] When the second motor 112 is running, it drives one of the second pulleys 162 to rotate. The other second pulley 162 is linked to the first second pulley 162 via the second transmission belt 172. The portion of the second transmission belt 172 near the chemical pipeline moves in the opposite direction, i.e., the portion of the second transmission belt 172 near the chemical pipeline moves towards the second limiting block 152. When the fourth abutment moves onto the portion of the second transmission belt 172 near the chemical pipeline, the fourth abutment can move towards the direction of the second limiting block 152. With this structure, the second drive assembly can drive the fourth abutment to move towards the second limiting block 152.

[0060] In this embodiment, a second bearing is fixed on the support frame 3, and a second shaft 182 is fixed in the bearing hole of the second bearing. The second shaft 182 is arranged vertically, and the other second pulley 162 is fixedly connected to the second shaft 182. With this structure, the other second pulley 162 can be rotatably connected to the support frame 3.

[0061] In this embodiment, when the second abutment moves to the portion of the first transmission belt 171 near the chemical pipeline under the drive of the first transmission belt 171, the fourth abutment moves to the portion of the second transmission belt 172 away from the chemical pipeline under the drive of the second transmission belt 172; when the fourth abutment moves to the portion of the second transmission belt 172 away from the chemical pipeline under the drive of the second transmission belt 172, the second abutment moves to the portion of the first transmission belt 171 near the chemical pipeline under the drive of the first transmission belt 171. With this structure, the first drive assembly can also drive the second abutment to abut the first abutment after the fourth abutment disengages from the third abutment, and the second drive assembly can also drive the fourth abutment to abut the third abutment after the second abutment disengages from the first abutment.

[0062] In this embodiment: the first contact part includes a first crossbar 141, which faces the first driving assembly and is arranged perpendicular to the length of the chemical pipeline. One end of the first crossbar 141 is connected to the connecting rod 6, and the other end has an inclined surface facing the first limiting block 151. The second contact part includes a second fixing block 122, a second crossbar 142, a second telescopic rod 132, and a second spring 92. The second fixing block 122 is connected to the first driving assembly. The second telescopic rod 132 and the second crossbar 142 are both arranged perpendicular to the length of the chemical pipeline. The two ends of the second telescopic rod 132 are respectively connected to one end of the second fixing block 122 and the second crossbar 142. The other end of the second crossbar 142 has an inclined surface facing the second limiting block 152. The second spring 92 is sleeved around the second telescopic rod 132, and the two ends of the second spring 92 are respectively fixed to the second fixing block 122 and the second crossbar 142. The second crossbar 142 and the inclined surface of the first crossbar 141 can slide together.

[0063] The third contact part includes a third crossbar 143, which faces the second driving assembly and is arranged perpendicular to the length of the chemical pipeline. One end of the third crossbar 143 is connected to the connecting rod 6, and the other end has an inclined surface forming towards the second limiting block 152. The fourth contact part includes a fourth fixing block 124, a fourth crossbar 144, a fourth telescopic rod 134, and a fourth spring 94. The fourth fixing block 124 is connected to the second driving assembly, and the fourth telescopic rod 134 and the fourth crossbar 144 are both arranged perpendicular to the length of the chemical pipeline. The fourth telescopic rod 134 is set perpendicular to the length of the chemical pipeline. Its two ends are connected to one end of the fourth fixed block 124 and one end of the fourth crossbar 144, respectively. The other end of the fourth crossbar 144 has an inclined surface facing the first limiting block 151. The fourth spring 94 is sleeved around the fourth telescopic rod 134, and its two ends are fixed to the fourth fixed block 124 and the fourth crossbar 144, respectively. The inclined surface of the fourth crossbar 144 can slide in cooperation with the inclined surface of the third crossbar 143.

[0064] When the first contact part and the second contact part abut against each other, the first drive assembly continues to operate, driving the second contact part to move along the transmission direction of the first transmission belt 171. At this time, because the movement of the second crossbar 142 in the direction parallel to the length of the chemical pipeline is resisted by the first crossbar 141, it begins to move in the direction perpendicular to the length of the chemical pipeline to compress the second spring 92 until the second crossbar 142 moves in the direction perpendicular to the length of the chemical pipeline and can disengage from the first crossbar 141. After that, the second crossbar 142 is reset under the drive of the second spring 92 to a state that can cooperate with the inclined surface of the first crossbar 141, and can continue to drive the first crossbar 141 to move and disengage from the first crossbar 141 in the next cycle.

[0065] When the third and fourth contact parts abut against each other, the second drive assembly continues to operate, driving the fourth contact part to move along the transmission direction of the second transmission belt 172. At this time, due to the movement of the fourth crossbar 144 parallel to the length of the chemical pipeline being resisted by the third crossbar 143, it begins to move perpendicular to the length of the chemical pipeline, squeezing the fourth spring 94, until the fourth crossbar 144 moves along the perpendicular to the length of the chemical pipeline and can disengage from the third crossbar 143. After that, the fourth crossbar 144 is reset under the drive of the fourth spring 94 to a state that can cooperate with the inclined surface of the third crossbar 143, and can continue to drive the third crossbar 143 to move and disengage from the third crossbar 143 in the next cycle.

[0066] This structure allows the second and fourth contact parts to periodically drive the first and third contact parts to translate along with the second and fourth contact parts, or to cause the first and third contact parts to detach from the second and fourth contact parts.

[0067] Specifically, the second telescopic rod 132 and the fourth telescopic rod 134 are each composed of two round tubes with different diameters. The round tube with a smaller diameter fits inside the round tube with a larger diameter and can slide along the length of the round tube with a larger diameter to achieve telescopic movement.

[0068] In this embodiment: the first limiting block 151 is provided with a first through hole along its axial direction, and the translation rod 4 can pass through the first through hole and slide to connect with the first limiting block 151; the second limiting block 152 is provided with a second through hole along its axial direction, and the translation rod 4 can pass through the second through hole and slide to connect with the second limiting block 152.

[0069] The first limiting block 151 and the second limiting block 152 can slide along the length of the translation rod 4, thereby changing the maximum distance that the reciprocating motion of the ring can reach, thus enabling the detection of chemical pipelines of different lengths.

[0070] In this embodiment: the first limiting block 151 is provided with a first threaded hole, the first threaded hole connects the outer side of the first limiting block 151 with the first through hole, and the first threaded hole is provided with a first threaded rod 191 that can be screwed into it, the first threaded rod 191 can pass through the first threaded hole and abut against the translation rod 4.

[0071] The second limiting block 152 is provided with a second threaded hole, which connects the outer side of the second limiting block 152 with the second through hole. A second threaded rod 192 that can be screwed into the second threaded hole is provided. The second threaded rod 192 can pass through the second threaded hole and abut against the translation rod 4.

[0072] During operation, by turning the first threaded rod 191 and the second threaded rod 192 counterclockwise, the first threaded rod 191 and the second threaded rod 192 can be moved away from the translation rod 4 within the first threaded hole and the second threaded hole, respectively. This releases the translation rod 4 from its resistance to the first threaded rod 191 and the second threaded rod 192, allowing the first limiting block 151 and the second limiting block 152 to move on the translation rod 4. After moving the first limiting block 151 and the second limiting block 152 to a suitable position on the translation rod 4, the first threaded rod 191 and the second threaded rod 192 are rotated clockwise to move towards the translation rod 4 within the first threaded hole and the second threaded hole, until the first threaded rod 191 and the second threaded rod 192 abut against the translation rod 4, thereby restricting the movement of the first limiting block 151 and the second limiting block 152.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An early warning device for risk control in a chemical plant, characterized in that: The utility model relates to a chemical pipeline sealing device, including elastic sleeve (1), fixed part (2), circular ring, drive part and alarm (21), the elastic sleeve (1) is used to be wrapped on chemical pipeline, the fixed part (2) is used to fix elastic sleeve (1) on chemical pipeline, to make elastic sleeve (1) with the surface between chemical pipeline form multiple sealed cavities along the length direction of chemical pipeline arrangement, the circular ring is arranged around the elastic sleeve (1), the drive part is used to drive the circular ring moves along the length direction of chemical pipeline, and the alarm (21) is used to connect power supply (20) and send out alarm after the one end surface of circular ring bears the sealed cavity after expansion.

2. The early warning device for risk management and control of a chemical plant according to claim 1, characterized in that: The drive part includes a support part and a transmission part, the circular ring is slidably arranged on the support part along the length direction of the chemical pipeline, and the transmission part is used to drive the circular ring to move along the length direction of the chemical pipeline.

3. The early warning device for risk management and control of a chemical plant according to claim 2, characterized in that: The support part includes a support frame (3), a translation rod (4), a sleeve (5) and a connecting rod (6), the translation rod (4) is fixedly arranged on the support frame (3), the translation rod (4) is arranged along the length direction of the chemical pipeline, the sleeve (5) is slidably arranged on the translation rod (4), one end of the connecting rod (6) is fixedly connected with the sleeve (5), and the other end of the connecting rod (6) is connected with the circular ring.

4. The early warning device for risk management and control of a chemical plant according to claim 3, characterized in that: The circular ring includes a first ring body (71) and a second ring body (72), the first ring body (71) is fixedly connected with the other end of the connecting rod (6), the second ring body (72) is two and is arranged on both sides of the first ring body (71) along the length direction of the chemical pipeline, the second ring body (72) is spaced apart from the first ring body (71) and is slidably connected with the first ring body (71) along the length direction of the chemical pipeline, a first pole piece (81) is connected to one side of the second ring body (72) facing the first ring body (71), and a second pole piece (82) is connected to the side of the second ring body (72) facing the first ring body (71) and corresponding to the first pole piece (81); the alarm (21) is used to connect the power supply (20) and send out an alarm when the first pole piece (81) contacts the corresponding second pole piece (82).

5. The early warning device for risk management and control of a chemical plant according to claim 4, characterized in that: The second ring body (72) is provided with a plurality of sliding rods (10) on one side facing the first ring body (71) along the length direction of the chemical pipeline, the surface of the first ring body (71) is recessed to form a sliding groove at a position corresponding to each sliding rod (10), the sliding rod (10) is slidably arranged in the corresponding sliding groove, and a first spring (91) is sleeved on the sliding rod (10), and the two ends of the first spring (91) are fixedly connected with the first ring body (71) and the second ring body (72) respectively.

6. The early warning device for risk management and control in chemical plants according to claim 3, characterized in that: The transmission part comprises a first abutting part, a first limiting block (151), a second abutting part and a first driving assembly, the first abutting part is arranged on the connecting rod (6), the first limiting block (151) is fixedly arranged on the translation rod (4) and located on one side of the sleeve (5), the second abutting part is used for abutting against the first abutting part and pushing the first abutting part towards the first limiting block (151), and the second abutting part is also used for being separated from the first abutting part after the sleeve (5) abuts against the first limiting block (151), and the first driving assembly is used for driving the second abutting part to move towards the first limiting block (151).

7. The early warning device for risk management and control of a chemical plant according to claim 6, characterized in that: The transmission part further comprises a third abutting part, a second limiting block (152), a fourth abutting part and a second driving assembly, the third abutting part is arranged on the connecting rod (6), the second limiting block (152) is fixedly arranged on the translation rod (4) and located on the other side of the sleeve (5), the fourth abutting part is used for abutting against the third abutting part and pushing the third abutting part towards the second limiting block (152), and the fourth abutting part is also used for being separated from the third abutting part after the sleeve (5) abuts against the second limiting block (152), and the second driving assembly is used for driving the fourth abutting part to move towards the second limiting block (152). When the first abutting part abuts against the second abutting part, the fourth abutting part is in a state of being separated from the third abutting part, and when the fourth abutting part abuts against the third abutting part, the second abutting part is in a state of being separated from the first abutting part.

8. The early warning device for risk management and control of a chemical plant according to claim 7, characterized in that: The first abutting part comprises a first horizontal rod (141), the first horizontal rod (141) is arranged towards the first driving assembly and along a direction perpendicular to the length direction of the chemical pipeline, one end of the first horizontal rod (141) is connected to the connecting rod (6), and a slope is formed on the other end of the first horizontal rod (141) towards the direction of the first limiting block (151), the second abutting part comprises a second fixed block (122), a second horizontal rod (142), a second telescopic rod (132) and a second spring (92), the second fixed block (122) is connected to the first driving assembly, the second telescopic rod (132) and the second horizontal rod (142) are both arranged towards the direction of the chemical pipeline and along a direction perpendicular to the length direction of the chemical pipeline, both ends of the second telescopic rod (132) are respectively connected to the second fixed block (122) and one end of the second horizontal rod (142), a slope is formed on the other end of the second horizontal rod (142) towards the direction of the second limiting block (152), the second spring (92) is sleeved around the second telescopic rod (132), and both ends of the second spring (92) are fixedly connected with the second fixed block (122) and the second horizontal rod (142), respectively, and the slope of the second horizontal rod (142) and the slope of the first horizontal rod (141) can be matched to slide. The third abutting part comprises a third horizontal rod (143) arranged towards the second driving assembly and along a direction perpendicular to the length direction of the chemical pipeline, one end of the third horizontal rod (143) is connected to the connecting rod (6), and the other end is formed with an inclined surface towards the direction of the second limiting block (152); the fourth abutting part comprises a fourth fixed block (124), a fourth horizontal rod (144), a fourth telescopic rod (134) and a fourth spring (94), the fourth fixed block (124) is connected to the second driving assembly, the fourth telescopic rod (134) and the fourth horizontal rod (144) are both arranged towards the direction of the chemical pipeline and along a direction perpendicular to the length direction of the chemical pipeline, both ends of the fourth telescopic rod (134) are respectively connected to the fourth fixed block (124) and one end of the fourth horizontal rod (144), the other end of the fourth horizontal rod (144) is formed with an inclined surface towards the direction of the first limiting block (151), the fourth spring (94) is sleeved around the fourth telescopic rod (134), and both ends of the fourth spring (94) are respectively fixedly connected to the fourth fixed block (124) and the fourth horizontal rod (144), and the inclined surface of the fourth horizontal rod (144) and the inclined surface of the third horizontal rod (143) can slide in cooperation.

9. The early warning device for risk management and control of a chemical plant according to claim 8, characterized in that: The first limiting block (151) is provided with a first through hole in the center, and the translation rod (4) can slideably connect with the first limiting block (151) through the first through hole; the second limiting block (152) is provided with a second through hole in the center, and the translation rod (4) can slideably connect with the second limiting block (152) through the second through hole.

10. The early warning device for risk management and control of a chemical plant according to claim 9, characterized in that: The first limiting block (151) is provided with a first threaded hole, the first threaded hole is in communication with the outside of the first limiting block (151) and the first through hole, a first threaded rod (191) capable of screwing with the first threaded hole is arranged in cooperation with the first threaded hole, and the first threaded rod (191) can abut on the translation rod (4) through the first threaded hole. The second limiting block (152) is provided with a second threaded hole, the second threaded hole is in communication with the outside of the second limiting block (152) and the second through hole, a second threaded rod (192) capable of screwing with the second threaded hole is arranged in cooperation with the second threaded hole, and the second threaded rod (192) can abut on the translation rod (4) through the second threaded hole.

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