Self-adaptive temperature adjusting device of pressure transmitter

Abstract

The invention provides a self-adaptive temperature adjusting device for a pressure transmitter, which relates to the technical field of transmitters and comprises a shell A. A shell B is arranged at the surface attaching position of the shell A. By arranging the shell A and the shell B, in the aspect of heat dissipation adjustment, a fixed heat dissipation structure is abandoned, the sensitive characteristic of the bimetallic strip to the temperature is utilized, when the internal temperature of the device changes, the bimetallic strip deforms to drive the connecting rod mechanism and drive the louver blades to automatically adjust the opening and closing angle, and the dynamic adjustment of the heat dissipation degree is achieved; no matter in a high-temperature environment or a low-temperature environment, it can be ensured that the interior of the device is at a proper temperature, and element performance is prevented from being affected. In terms of temperature monitoring and regulation, the temperature is accurately monitored in real time through a built-in temperature sensor, intelligent regulation is achieved in cooperation with a control module, once the temperature is abnormal, a response can be made rapidly, compared with traditional manual regulation, efficiency is greatly improved, sudden temperature change can be coped with in time, and the requirement for stable operation of industrial production is met.

Description

Technical Field

[0001] This invention relates to the field of transmitter technology, and more particularly to an adaptive temperature control device for a pressure transmitter. Background Technology

[0002] In the early stages of industrial automation, pressure transmitters, as key measurement and transmission devices, were widely used in numerous fields such as petroleum, chemical, and power. At that time, little attention was paid to the temperature adaptability of pressure transmitters, relying solely on the material properties of the equipment itself and a simple external environment to maintain operating temperature. However, with the continuous expansion of industrial production scale and the increasing complexity of production processes, pressure transmitters frequently experienced problems such as large measurement errors and component damage under different ambient temperatures, seriously affecting the stability of production processes and product quality. This prompted people to begin paying attention to the temperature regulation requirements of pressure transmitters, thus initiating the research and development of pressure transmitter temperature control devices.

[0003] Traditional devices mostly employ fixed heat dissipation structures, such as simple ventilation holes or fixed louvers, which cannot automatically adjust the degree of heat dissipation according to actual temperature changes. When the ambient temperature is low, continuous ventilation and heat dissipation can lead to excessively low internal temperatures, affecting component performance. In high-temperature environments, fixed heat dissipation structures cannot quickly dissipate large amounts of heat, easily causing component damage or decreased accuracy due to overheating. On the other hand, traditional devices lack real-time temperature monitoring and intelligent control mechanisms, usually relying on periodic manual inspection and adjustment, which is not only inefficient but also unable to respond promptly to sudden temperature changes, failing to meet the high requirements of industrial production for stable operation of pressure transmitters. Improvements are needed. Summary of the Invention

[0004] The purpose of this invention is to solve the technical problems mentioned in the background section.

[0005] The present invention adopts the following technical solution: a pressure transmitter adaptive temperature regulation device, including a housing A, a housing B is disposed at the surface of the housing A and the housing A and housing B are fixedly connected by bolts, the surface of the housing B is provided with a display screen and operation buttons, a circuit board is sleeved inside the housing A, the circuit board is connected and fixed to the inner surface of the housing B by bolts, the bottom end of the housing A is provided with a connection interface, and the circuit board is electrically connected to the connection interface, the display screen and the operation buttons through a wire harness.

[0006] Preferably, the outer casing A has grooves on both sides, and louver blades are fitted inside the grooves. Rotating rods are installed at both ends of the louver blades. A synchronous pulley is fixedly installed at one end of each rotating rod, and a synchronous belt is externally connected to the synchronous pulley. A movable frame is fitted inside the grooves, and an adjusting wheel is fitted inside the front end of the movable frame. A moving rod is installed at the rear end of the movable frame, and a spring A is fitted on the outer surface of the moving rod. A rotating groove is formed on the inner surface of the outer casing A and penetrates one end of the groove. A connecting rod A is welded to the surface of the rotating rod. A limiting frame A is installed on the inner surface of the outer casing A. A is internally fitted with a connecting rod B, one end of which is movably connected to the other end of connecting rod A via a limiting pin. A limiting rod is installed on the inner surface of housing A, and a rotating plate is fitted on the outer surface of the limiting rod. A limiting frame B is installed on the inner surface of housing A. An arc-shaped rod is installed at the bottom of the rotating plate, and the other end of the arc-shaped rod is fitted inside the limiting frame B. A spring B is provided on the outer surface of the arc-shaped rod. A fixing plate is installed on the inner surface of housing A, and an arc-shaped telescopic rod is installed at the bottom of the fixing plate, with the other end of the arc-shaped telescopic rod connected and fixed to the top surface of the rotating plate. A bimetallic strip is fitted between the fixing plate and the rotating plate. Here, the louver blades in the grooves on both sides of housing A are linked by a rotating rod, a synchronous wheel, and a synchronous belt. When the temperature changes, the bimetallic strip deforms, pushing the rotating plate, which in turn drives the louver blades to rotate via the linkage mechanism, automatically adjusting the ventilation angle.

[0007] Preferably, a temperature sensor and a control module are installed on the inner side surface of the outer casing A. A relay is also installed on the inner side surface of the outer casing A. A powder box is bolted to the inner top surface of the outer casing A. A support frame is welded to the inner top of the outer casing A. A lever is fitted inside the bottom end of the support frame. An electric telescopic rod is bolted to the inner top of the outer casing A. A connecting frame A is installed at the other end of the electric telescopic rod. A connecting frame B is installed at the top of one end of the lever, and the connecting frame B and the connecting frame A are movably connected by a limiting pin. An impact plate is provided on the outside of the other end of the lever. A breaking nail is installed at the top of the impact plate. Sliding grooves are opened inside both ends of the impact plate, and the other end of the lever is slidably connected to the sliding grooves. A guide tube is welded inside the outer casing A and is placed above the circuit board. Here, the temperature sensor monitors the internal temperature in real time, and the control module makes decisions based on a set threshold.

[0008] Preferably, housing A and housing B are rotatably connected by multiple sets of bolts, and housing A and housing B are tightly joined. The number of connection interfaces is multiple, arranged in an array at the bottom of housing A, and the connection interfaces are made of copper. Here, the use of multiple sets of bolts to rotatably connect housing A and housing B ensures a tight connection, effectively resisting external environmental interference and protecting the internal structure. The multiple arrayed copper connection interfaces possess excellent conductivity and mechanical strength, reducing signal transmission loss, ensuring the stability and reliability of the connection between the device and external equipment, and extending the service life of the device.

[0009] Preferably, the louver blades and rotating rods are in multiple sets, symmetrically distributed inside the groove, and the connecting rod A is welded to the rotating rod at the center. The louver blades are made of aluminum alloy and have an inclination angle of 45 degrees. One end of the spring C is connected and fixed to the surface of the connecting rod B, and the other end of the spring C is connected and fixed to the top surface of the limiting frame A. Here, the multiple sets of symmetrically distributed louver blades and rotating rods, in conjunction with the connecting rod A and the central rotating rod, achieve synchronous opening and closing, improving ventilation efficiency. The aluminum alloy material makes the blades lightweight and corrosion-resistant, and the 45-degree inclination design effectively blocks foreign objects during ventilation, ensuring the cleanliness of the device's interior and enhancing the practicality and durability of the louver structure.

[0010] Preferably, the surface of the synchronous pulley meshes with the surface of the synchronous belt, the surface of the adjusting pulley is tightly connected to the outer surface of the synchronous belt, and there are two sets of them symmetrically distributed inside the groove. There are also two sets of springs A, with one end of spring A fixedly connected to the inner surface of the groove and the other end fixedly connected to the rear end surface of the moving frame. The initial state of spring A is semi-compressed. Here, the engagement of the synchronous pulley and the synchronous belt, and the tight connection of the adjusting pulley and the synchronous belt, ensure accurate power transmission. The two symmetrically distributed adjusting pulleys and the semi-compressed springs A precisely control the tension change of the synchronous belt when the linkage mechanism drives the moving frame to move, ensuring that the louver blades rotate at the same angle, achieving stable and precise ventilation adjustment, and avoiding the impact of adjustment errors on heat dissipation.

[0011] Preferably, the initial shape of connecting rods A and B is an obtuse angle. The top end of connecting rod B is round and fits against the bottom surface of the bimetallic strip. A groove with a flattened elliptical shape is formed through the surface of the bimetallic strip. The arc-shaped telescopic rod is sleeved inside the groove, and connecting rod B is sleeved inside the limiting frame A. Here, connecting rods A and B are initially at an obtuse angle. Combined with the fit between the bimetallic strip and connecting rod B, this design allows for sensitive response to deformation of the bimetallic strip due to temperature changes. The cooperation between the bimetallic strip groove and the arc-shaped telescopic rod, as well as the sliding of connecting rod B within the limiting frame A, ensures stable transmission, prevents jamming, and reliably converts temperature changes into louver adjustment power, achieving adaptive temperature regulation.

[0012] Preferably, the bottom end of the bimetallic strip is made of Invar steel, and the top end is made of brass, with the Invar steel and brass tightly bonded together through a high-temperature rolling process. One end of the spring B is connected and fixed to the surface of the limiting frame B, and the other end of the spring B is connected and fixed to the bottom surface of the rotating plate. There are two sets of the rotating plate, limiting frame B, spring B, and arc-shaped rod, symmetrically distributed inside the outer casing B with the connecting rod B as the line of symmetry. Here, the bimetallic strip, made of Invar steel and brass tightly bonded together through high-temperature rolling, utilizes the difference in thermal expansion coefficients of the two metals to provide a rapid and accurate response to temperature changes. The two symmetrically distributed sets of rotating plates, limiting frame B, spring B, and arc-shaped rods, in conjunction with the bimetallic strip, form a stable transmission structure.

[0013] Preferably, the guide tube has a funnel-shaped top and an inclined rectangular tube-shaped bottom. The powder box contains graphite powder, and a weak line is pre-set on the bottom surface of the powder box at its bottom edge. The powder box and impact plate are placed above the guide tube. The powder box is made of aluminum foil. Here, the funnel-shaped top of the guide tube facilitates the smooth falling of graphite powder, while the inclined rectangular tube-shaped bottom ensures uniform powder coverage of the circuit board. The weak line at the bottom of the aluminum foil powder box makes it easily breakable under the impact of the impact plate, rapidly releasing the internal graphite powder.

[0014] Preferably, the lever is initially positioned at a slight inclination. There are two sets of electrically operated telescopic rods and levers, symmetrically distributed inside the outer casing A. The other ends of the levers are slidably connected within sliding grooves, which are flattened ellipses. Multiple sets of breaking nails are arrayed on top of the impact plate. The impact plate has rounded corners on both sides. Here, the slightly incised levers, in their initial state, can rotate rapidly under the action of the electrically operated telescopic rods, causing the impact plate to move. The two symmetrically distributed sets of electrically operated telescopic rods and levers, along with the flattened elliptical sliding grooves, ensure smooth and accurate movement of the impact plate.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, by setting up shell A and shell B structures, a fixed heat dissipation structure is abandoned in terms of heat dissipation regulation. Utilizing the temperature-sensitive characteristics of a bimetallic strip, when the internal temperature of the device changes, the deformation of the bimetallic strip drives a linkage mechanism, causing the louver blades to automatically adjust their opening and closing angle, achieving dynamic adjustment of the heat dissipation level. Regardless of high or low temperature environments, this ensures that the internal temperature of the device remains suitable, preventing any impact on component performance. Regarding temperature monitoring and control, a built-in temperature sensor monitors the temperature accurately in real time, and in conjunction with a control module, intelligent regulation is achieved. In the event of temperature anomalies, a rapid response is made. Compared to traditional manual adjustment, efficiency is significantly improved, allowing for timely responses to sudden temperature changes and meeting the stable operation requirements of industrial production.

[0016] 2. In this invention, by incorporating an arc-shaped telescopic rod, a bimetallic strip, a temperature sensor, a control module, a relay, a powder box, a support frame, and a lever structure, when the internal temperature of the equipment is too high, the control module activates the electric telescopic rod via the relay, pushing one end of the lever upwards. The impact plate at the other end slides within the sliding groove and swings downwards, causing the breaking nail to shatter the weak wire at the bottom of the powder box. The graphite powder inside then evenly covers the circuit board via a funnel-shaped guide tube. The excellent thermal conductivity and insulation of the graphite powder can quickly reduce the circuit board temperature, preventing component damage due to high temperatures and providing high-temperature emergency protection for the device. Furthermore, in the event of a fire on the circuit board due to excessive temperature, the breaking powder box can extinguish the fire, effectively eliminating safety hazards for users operating the equipment. Attached Figure Description

[0017] Figure 1 This invention provides a three-dimensional structural schematic diagram of a pressure transmitter adaptive temperature control device; Figure 2 This invention provides a schematic diagram of the internal structure of a pressure transmitter adaptive temperature control device. Figure 3 This invention provides a cross-sectional structural schematic diagram of a pressure transmitter adaptive temperature control device. Figure 4 This invention provides an exploded structural diagram of a pressure transmitter adaptive temperature control device. Figure 5 This invention presents a partial structural schematic diagram of a pressure transmitter adaptive temperature control device. Figure 6 A schematic diagram of a bimetallic strip structure for an adaptive temperature control device for a pressure transmitter is provided for this invention. Figure 7 This invention proposes an adaptive temperature control device for a pressure transmitter. Figure 3 Enlarged view of point A in the middle; Figure 8This invention proposes an adaptive temperature control device for a pressure transmitter. Figure 5 Enlarged view of section B in the middle.

[0018] Legend: 1. Outer shell A; 2. Outer shell B; 3. Display screen; 4. Operation button; 5. Circuit board; 6. Connection interface; 7. Groove; 8. Louver blade; 9. Rotating rod; 10. Synchronous pulley; 11. Synchronous belt; 12. Moving frame; 13. Adjusting wheel; 14. Moving rod; 15. Spring A; 16. Rotating groove; 17. Connecting rod A; 18. Limiting frame A; 19. Connecting rod B; 20. Limiting rod; 21. Rotating plate; 22. Limiting frame B; 23. Arc rod; 24. Spring B; 25. Fixing plate; 26. Arc telescopic rod; 27. Bimetallic strip; 28. Temperature sensor; 29. ​​Control module; 30. Relay; 31. Powder box; 32. Support frame; 33. Lever; 34. Electric telescopic rod; 35. Connecting frame A; 36. Connecting frame B; 37. Impact plate; 38. Breaking nail; 39. Sliding groove; 40. Guide tube. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1 Please see Figures 1-7This invention provides a technical solution: an adaptive temperature control device for a pressure transmitter, comprising a housing A1, a housing B2 attached to the surface of housing A1 and fixedly connected to housing B2 by bolts, a display screen 3 and an operation button 4 on the surface of housing B2, a circuit board 5 housed inside housing A1 and fixedly connected to the inner surface of housing B2 by bolts, a connection interface 6 at the bottom of housing A1, and the circuit board 5 electrically connected to the connection interface 6, the display screen 3 and the operation button 4 via a wiring harness, grooves 7 on both sides of housing A1, louver blades 8 housed inside the grooves 7, rotating rods 9 mounted at both ends of the louver blades 8, a synchronous wheel 10 fixedly mounted at one end of the rotating rod 9, a synchronous belt 11 externally connected to the synchronous wheel 10, a movable frame 12 housed inside the grooves 7, an adjusting wheel 13 housed inside the front end of the movable frame 12, a movable rod 14 mounted at the rear end of the movable frame 12, and a spring A 15 housed on the outer surface of the movable rod 14. The inner surface of 1 has a rotating groove 16 that penetrates one end of the groove 7, and the surface of the rotating rod 9 is welded with a connecting rod A 17.

[0022] A limiting frame A18 is installed on the inner surface of the outer casing A1. A connecting rod B19 is sleeved inside the limiting frame A18, and one end of the connecting rod B19 is movably connected to the other end of the connecting rod A17 through a limiting pin. A limiting rod 20 is installed on the inner surface of the outer casing A1. A rotating plate 21 is sleeved on the outer surface of the limiting rod 20. A limiting frame B22 is installed on the inner surface of the outer casing A1. An arc-shaped rod 23 is installed at the bottom end of the rotating plate 21, and the other end of the arc-shaped rod 23 is sleeved inside the limiting frame B22. A spring B24 is provided on the outer surface of the arc-shaped rod 23. A fixing plate 25 is installed on the inner surface of the outer casing A1. An arc-shaped telescopic rod 26 is installed at the bottom end of the fixing plate 25, and the other end of the arc-shaped telescopic rod 26 is connected and fixed to the top surface of the rotating plate 21. A bimetallic strip 27 is sleeved between the fixing plate 25 and the rotating plate 21. A spring C is sleeved on the outer surface of the connecting rod B19.

[0023] During installation, circuit board 5 is then accurately placed inside housing A1 and firmly secured to the inner surface of housing B2 with bolts, ensuring that circuit board 5 remains stable and without displacement during device operation. Housings A1 and B2 are then precisely aligned and tightly secured with bolts, forming a robust and sealed enclosure that provides stable protection for the internal components. Next, using appropriate wiring harnesses, circuit board 5 is electrically connected to the connection interfaces 6 at the bottom of housings A and B, enabling data and power transmission between the device and external equipment. Simultaneously, circuit board 5 is also connected to the display screen 3 and operation buttons 4 on the surface of housing B2 via wiring harnesses, facilitating parameter setting and status monitoring by the operator.

[0024] After the device is put into use, under normal temperature conditions, the bimetallic strip 27 remains flat, and the spring A 15 is in a semi-compressed state, providing preload and buffer for the transmission mechanism; the spring B 24 is kept in a moderate state, ensuring that the rotating plate 21 is stable under the constraint of the limiting rod 20 and the limiting frame B 22; one end of the spring C is connected to the connecting rod B 19, and the other end is fixed to the top of the limiting frame A 18, supporting the positioning connecting rod B 19 and keeping it in a specific position.

[0025] At this time, under the constraint of the spring force of spring A 15 and the synchronous belt 11, the louver blades 8 maintain a certain closed angle, which can not only block the entry of external dust and debris, protecting components such as the circuit board 5, but also maintain a relatively stable internal temperature and reduce the impact of external temperature fluctuations. When the internal temperature of the device rises, the bimetallic strip 27, which is made of two metals with different coefficients of thermal expansion bonded together, will bend and deform towards the side with the smaller coefficient of thermal expansion. This bending action directly causes the connecting rod B 19 to move downward against the spring force of spring C. Since the connecting rod B 19 is movably connected to the connecting rod A 17 through a limit pin, the downward movement of the connecting rod B 19 will pull the connecting rod A 17 to move. The movement of the connecting rod A 17 drives the rotating rod 9 welded to it to move. The rotation of the rotating rod 9 causes the synchronous wheels 10 at both ends to rotate. The synchronous wheels 10 transmit power to the synchronous wheel 10 on the other side through the synchronous belt 11, realizing the coordinated rotation of multiple rotating rods 9, thereby driving the louver blades 8 to rotate synchronously and increasing the opening and closing angle of the louver. At this time, outside air can flow more smoothly into the device, speeding up air circulation, carrying away the excess heat generated by the components, achieving heat dissipation and cooling, and ensuring that the pressure transmitter operates stably at a suitable temperature.

[0026] During this process, the adjusting wheel 13 closely contacts the synchronous belt 11, relying on friction to monitor and maintain the tension of the synchronous belt 11, preventing slippage due to reduced tension and ensuring accurate power transmission to the louver blades 8. As the internal temperature of the device decreases, the bimetallic strip 27 gradually returns to its straight position, and the elastic force of the spring C pushes the connecting rod B 19 to return to its original position. At the same time, the spring A 15 pulls the moving frame 12 forward, and the adjusting wheel 13 further stabilizes the tension of the synchronous belt 11 as the moving frame 12 returns to its original position.

[0027] After the tension of the synchronous belt 11 decreases, the louver blades 8 gradually rotate back under the combined action of the synchronous belt 11 and spring A 15, reducing the opening and closing angle, decreasing the airflow speed, reducing heat loss inside the device, and maintaining temperature stability. Throughout the temperature regulation process, the rotating plate 21 operates independently. Temperature changes cause the bimetallic strip 27 to deform, generating force that acts on the structure surrounding the rotating plate 21. The rotating plate 21 rotates in a specific manner under the restriction of the limiting rod 20, and its bottom arc-shaped rod 23 slides within the limiting frame B 22, compressing or stretching the spring B 24. The extension and retraction of spring B 24 serves as a buffer and auxiliary reset function, working in conjunction with other components to ensure that the louver blades 8 accurately adjust the opening and closing angle according to temperature changes, effectively controlling the internal temperature of the device and ensuring that the pressure transmitter is always in a good operating temperature environment. Simultaneously, during equipment use, the force generated by the bimetallic strip 27 during bending is greater than the sum of the elastic forces of spring B 24 and spring C.

[0028] Please see Figures 1-8 The outer casing A1 and outer casing B2 are rotatably connected by multiple sets of bolts, and the outer casing A1 and outer casing B2 are tightly combined. There are multiple sets of connection interfaces 6, arranged in an array at the bottom of outer casing A1, and the material of connection interfaces 6 is copper. There are multiple sets of louver blades 8 and rotating rods 9, symmetrically distributed inside the groove 7, and connecting rod A17 is welded to the rotating rod 9 at the center. The louver blades 8 are made of aluminum alloy and have an inclination angle of 45 degrees. One end of spring C is connected and fixed to the surface of connecting rod B19, and the other end of spring C is connected and fixed to the top surface of limit frame A18. The surface of synchronous wheel 10 meshes with the surface of synchronous belt 11. The surface of adjusting wheel 13 is tightly connected to the outer surface of synchronous belt 11, and there are two sets of them, symmetrically distributed inside the groove 7. There are two sets of springs A15, and one end of spring A15 is connected and fixed to the inner surface of the groove 7. The other end of spring A 15 is connected and fixed to the rear end surface of the movable frame 12. The initial state of spring A 15 is a semi-compressed state. The initial state of connecting rod A 17 and connecting rod B 19 forms an obtuse angle. The top end of connecting rod B 19 is round and fits against the bottom end surface of bimetallic strip 27. A groove is opened through the surface of bimetallic strip 27 and the groove is flat and elliptical. The arc-shaped telescopic rod 26 is sleeved inside the groove, and connecting rod B 19 is sleeved inside the limiting frame A 18.

[0029] The bottom of the bimetallic strip 27 is made of Invar steel, and the top is made of brass. The Invar steel and brass are tightly bonded together by a high-temperature rolling process. One end of the spring B 24 is connected and fixed to the surface of the limit frame B 22, and the other end of the spring B 24 is connected and fixed to the bottom surface of the rotating plate 21. There are two sets of rotating plate 21, limit frame B 22, spring B 24, and arc rod 23, which are symmetrically distributed inside the outer shell B 2 with the connecting rod B 19 as the line of symmetry. The top of the guide tube 40 is funnel-shaped, and the bottom is an inclined rectangular tube. The powder box 31 is filled with graphite powder. At the same time, the bottom surface of the powder box 31 is pre-set with a weak line and is set at the bottom edge of the powder box 31. The powder box 31 and the impact plate 37 are placed above the guide tube 40. The powder box 31 is made of aluminum foil. The lever 33 is initially placed in a slightly inclined position. There are two sets of electric telescopic rod 34 and lever 33, which are located inside the outer shell A. The internal components of 1 are symmetrically distributed, and the other ends of levers 33 are slidably connected inside sliding grooves 39. The shape of sliding grooves 39 is a flat ellipse. There are multiple sets of breaking nails 38, which are arranged in an array on the top of impact plate 37. The impact plate 37 has rounded corners on both sides. The rounded corner design on both sides of impact plate 37 prevents scratching of internal components and improves the safety and reliability of high temperature emergency structure. At the same time, the rounded corner inclined design facilitates the falling of graphite dust.

[0030] Example 2 Please see Figure 5 , Figure 8 A temperature sensor 28 and a control module 29 are installed on the inner side surface of the outer casing A1. A relay 30 is installed on the inner side surface of the outer casing A1. A powder box 31 is fixedly connected to the inner top surface of the outer casing A1 by bolts. A support frame 32 is welded to the inner top of the outer casing A1. A lever 33 is fitted inside the bottom end of the support frame 32. An electric telescopic rod 34 is bolted to the inner top of the outer casing A1. A connecting frame A 35 is installed at the other end of the electric telescopic rod 34. A connecting frame B 36 is installed at the top of one end of the lever 33, and the connecting frame B 36 and the connecting frame A 35 are movably connected by a limiting pin. An impact plate 37 is provided on the outside of the other end of the lever 33. A breaking nail 38 is installed at the top of the impact plate 37. Sliding grooves 39 are opened inside both ends of the impact plate 37, and the other end of the lever 33 is slidably connected to the sliding grooves 39. A guide tube 40 is welded inside the outer casing A1 and is placed above the circuit board 5.

[0031] During operation, temperature sensor 28 continuously monitors the internal temperature of the casing A1 and transmits real-time data to control module 29 without interruption. Control module 29 continuously compares and analyzes the received temperature data with preset fire temperature thresholds. Once temperature sensor 28 detects a rapid increase in internal temperature that reaches or exceeds the fire warning threshold, control module 29 immediately activates the fire extinguishing emergency procedure and sends a start signal to relay 30.

[0032] After receiving the command from the control module 29, the relay 30 quickly switches the circuit to power the electric telescopic rod 34, enabling it to start immediately. Once started, the electric telescopic rod 34 moves the connecting frame A 35 downwards. The connecting frame B 36, which is movably connected to the connecting frame A 35 via a limit pin, moves accordingly, pulling one end of the lever 33 downwards. Using the support frame 32 as a fulcrum, the lever 33, through its lever principle, pushes the impact plate 37 at the other end to move rapidly upwards along the sliding groove 39. The sliding grooves 39 at both ends of the impact plate 37 are slidably connected to the lever 33, ensuring stability and precise adjustment of angle and trajectory during movement. As the impact plate 37 moves rapidly upwards, the breaking nail 38 at its top precisely impacts the powder box 31 fixed inside the top of the outer casing A 1.

[0033] A weak line is pre-installed at the bottom of the powder box 31. Under the powerful impact of the breaking nail 38, the weak line breaks, and the fire extinguishing powder stored inside the box pours out. This fire extinguishing powder flows in through the funnel-shaped top of the guide tube 40, and then through the bottom of the inclined rectangular tube, evenly covering critical parts such as the circuit board 5. After the fire extinguishing powder covers the area, it quickly exerts a dual fire extinguishing effect. On the one hand, through physical coverage, an isolation layer is formed on the surface of the burning material, isolating the air and cutting off the oxygen required for combustion; on the other hand, the effective components in the powder react chemically with free radicals and other substances produced by combustion, inhibiting the combustion chain reaction, quickly extinguishing the fire, preventing the fire from spreading, and protecting core components such as the circuit board 5. When the temperature drops to a safe range and the fire hazard is eliminated, the control module 29 controls the electric telescopic rod 34 to reset, and the lever 33 and the impact plate 37 return to their initial state.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A pressure transmitter adaptive temperature control device, comprising a housing A (1), characterized in that: The outer shell A (1) is fitted with an outer shell B (2), and the outer shell A (1) and the outer shell B (2) are fixedly connected by bolts. The outer shell B (2) is provided with a display screen (3) and an operation button (4). The inner shell A (1) is fitted with a circuit board (5), and the circuit board (5) is connected and fixed to the inner surface of the outer shell B (2) by bolts. The bottom of the outer shell A (1) is provided with a connection interface (6), and the circuit board (5) is electrically connected to the connection interface (6), the display screen (3) and the operation button (4) through a wire harness.

2. The adaptive temperature control device for a pressure transmitter according to claim 1, characterized in that: The outer casing A (1) has grooves (7) on both sides. Louver blades (8) are fitted inside the grooves (7). Rotating rods (9) are installed at both ends of the louver blades (8). A synchronous wheel (10) is fixedly installed at one end of the rotating rod (9). A synchronous belt (11) is connected to the outside of the synchronous wheel (10). A movable frame (12) is fitted inside the grooves (7). An adjusting wheel (13) is fitted inside the front end of the movable frame (12). A moving rod (14) is installed at the rear end of the movable frame (12). A spring A (15) is fitted on the outer surface of the moving rod (14). A rotating groove (16) is opened on the inner surface of the outer casing A (1) and penetrates one end of the groove (7). A connecting rod A (17) is welded to the surface of the rotating rod (9). A limiting frame A (18) is installed on the inner surface of the outer casing A (1). A connecting rod B (1) is fitted inside the limiting frame A (18). 9) One end of the connecting rod B (19) is movably connected to the other end of the connecting rod A (17) through a limiting pin. A limiting rod (20) is installed on the inner surface of the outer shell A (1). A rotating plate (21) is sleeved on the outer surface of the limiting rod (20). A limiting frame B (22) is installed on the inner surface of the outer shell A (1). An arc rod (23) is installed at the bottom end of the rotating plate (21), and the other end of the arc rod (23) is sleeved inside the limiting frame B (22). A spring B (24) is provided on the outer surface of the arc rod (23). A fixing plate (25) is installed on the inner surface of the outer shell A (1). An arc telescopic rod (26) is installed at the bottom end of the fixing plate (25), and the other end of the arc telescopic rod (26) is connected and fixed to the top surface of the rotating plate (21). A bimetallic strip (27) is sleeved between the fixing plate (25) and the rotating plate (21). A spring C is sleeved on the outer surface of the connecting rod B (19).

3. The adaptive temperature control device for a pressure transmitter according to claim 1, characterized in that: A temperature sensor (28) and a control module (29) are installed on the inner side surface of the outer casing A (1). A relay (30) is installed on the inner side surface of the outer casing A (1). A powder box (31) is fixedly connected to the inner top surface of the outer casing A (1) by bolts. A support frame (32) is welded to the inner top of the outer casing A (1). A lever (33) is sleeved inside the bottom end of the support frame (32). An electric telescopic rod (34) is bolted to the inner top of the outer casing A (1). A connecting frame A (3) is installed at the other end of the electric telescopic rod (34). 5) A connecting frame B (36) is installed on the top of one end of the lever (33), and the connecting frame B (36) and the connecting frame A (35) are movably connected by a limiting pin. An impact plate (37) is provided on the outside of the other end of the lever (33). A breaking nail (38) is installed on the top of the impact plate (37). Sliding grooves (39) are opened inside both ends of the impact plate (37), and the other end of the lever (33) is slidably connected to the sliding grooves (39). A guide tube (40) is welded inside the outer shell A (1), and the guide tube (40) is placed above the circuit board (5).

4. The adaptive temperature control device for a pressure transmitter according to claim 1, characterized in that: The outer shell A (1) and the outer shell B (2) are rotatably connected by multiple sets of bolts and the outer shell A (1) and the outer shell B (2) are tightly combined. The number of the connection interfaces (6) is multiple sets and they are arranged in an array at the bottom of the outer shell A (1). The material of the connection interfaces (6) is copper.

5. The adaptive temperature control device for a pressure transmitter according to claim 2, characterized in that: The number of the louver blades (8) and the rotating rods (9) are multiple sets and are symmetrically distributed inside the groove (7). The connecting rod A (17) is welded to the rotating rod (9) at the center position. The material of the louver blades (8) is aluminum alloy and the louver blades (8) are tilted at an angle of 45 degrees. One end of the spring C is connected and fixed to the surface of the connecting rod B (19), and the other end of the spring C is connected and fixed to the top surface of the limiting frame A (18).

6. The adaptive temperature control device for a pressure transmitter according to claim 2, characterized in that: The surface of the synchronous pulley (10) meshes with the surface of the synchronous belt (11). The surface of the adjusting pulley (13) is closely connected to the outer surface of the synchronous belt (11) and there are two sets of them, which are symmetrically distributed inside the groove (7). There are two sets of springs A (15). At the same time, one end of spring A (15) is connected and fixed to the inner surface of the groove (7), and the other end of spring A (15) is connected and fixed to the rear end surface of the moving frame (12). The initial state of spring A (15) is a semi-compressed state.

7. The adaptive temperature control device for a pressure transmitter according to claim 2, characterized in that: The initial shape of the connecting rod A (17) and the connecting rod B (19) is obtuse. The top of the connecting rod B (19) is round and fits against the bottom surface of the bimetallic strip (27). The surface of the bimetallic strip (27) is provided with a sliding groove, and the shape of the sliding groove is flat and elliptical. The arc-shaped telescopic rod (26) is sleeved inside the sliding groove, and the connecting rod B (19) is sleeved inside the limiting frame A (18).

8. The adaptive temperature control device for a pressure transmitter according to claim 2, characterized in that: The bottom of the bimetallic strip (27) is made of Invar steel, and the top is made of brass. The Invar steel and brass are tightly bonded together by high-temperature rolling process. One end of the spring B (24) is connected and fixed to the surface of the limiting frame B (22). The other end of the spring B (24) is connected and fixed to the bottom surface of the rotating plate (21). The rotating plate (21), the limiting frame B (22), the spring B (24) and the arc rod (23) are all in two sets and are symmetrically distributed inside the outer shell B (2) with the connecting rod B (19) as the line of symmetry.

9. The adaptive temperature control device for a pressure transmitter according to claim 3, characterized in that: The top of the guide tube (40) is funnel-shaped and the bottom is an inclined rectangular tube. The powder box (31) contains graphite powder. The bottom surface of the powder box (31) has a pre-set weak line and is located at the bottom edge of the powder box (31). The powder box (31) and the impact plate (37) are placed above the guide tube (40). The powder box (31) is made of aluminum foil.

10. The adaptive temperature control device for a pressure transmitter according to claim 3, characterized in that: The lever (33) is initially placed at a slight inclination. The electric telescopic rod (34) and the lever (33) are in two sets and are symmetrically distributed inside the outer shell A (1). The other end of the lever (33) is slidably connected inside the sliding groove (39) and the sliding groove (39) is flat and elliptical. The number of the breaking nails (38) is multiple sets and is arranged in an array on the top of the impact plate (37). The impact plate (37) has rounded corners on both sides.

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