Protective pressure transmitter

Abstract

The invention belongs to the technical field of pressure detection, and particularly relates to a protective pressure transmitter which comprises a machine body and a pressure detection head arranged at the bottom of the machine body, and further comprises an outer sleeve, the outer side wall of the machine body is fixedly sleeved with the outer sleeve, a conical sleeve is fixedly installed at the top of the outer sleeve, an elastic rod is arranged in the conical sleeve, and the elastic rod is fixedly connected with the machine body. The elastic rod is fixedly mounted at the top of the outer sleeve, and a ball is fixedly mounted at the top of the elastic rod; the gas production unit is arranged on the inner wall of the conical sleeve, and the ball extrudes the side wall of the gas production unit to generate gas flow. The influence of vibration on the pressure transmitter can be reduced, the pressure transmitter can be assisted in heat dissipation and cooling based on vibration, meanwhile, when large-amplitude and high-frequency vibration occurs, the detection end of the pressure transmitter can be automatically blocked, the possibility of damage to the detection end of the pressure transmitter is reduced, and the detection end of the pressure transmitter can be automatically blocked based on the vibration amplitude and frequency. And personnel can be reminded to maintain the pressure transmitter in time.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure detection, and in particular relates to a protective pressure transmitter. Background Art

[0002] Pressure transmitters are crucial in industrial production. They can convert pressure signals into standard electrical signal outputs and are widely used in petrochemical, electric power, metallurgy and other fields. By accurately measuring pressure, they provide reliable data for monitoring and control of the production process to ensure stable operation of the system.

[0003] At present, since pressure transmitters need to be used in different environments, they need to have certain protection performance for different environments to ensure that they can operate stably and safely, such as a low-temperature and high-precision pressure transmitter disclosed in patent announcement number CN117740201A; In the process of pipeline transportation of media, when the pressure transmitter detects the pressure of the medium inside the pipeline, it is necessary to install the pressure transmitter directly on the transportation pipeline. However, since the transported medium is not uniform (for example, opening or closing a valve affects the flow of the medium, causing the flow of the medium to change), and due to the friction between the medium and the pipeline, the pipeline is prone to vibration. The vibration force is transmitted to the pressure transmitter, which may affect the normal operation of the pressure transmitter. Summary of the invention

[0004] The object of the present invention is to provide a protective pressure transmitter in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical solution: a protective pressure transmitter, comprising a body and a pressure detection head arranged at the bottom of the body, and further comprising: An outer sleeve, which is fixedly mounted on the outer side wall of the body, a conical sleeve is fixedly mounted on the top of the outer sleeve, an elastic rod is arranged inside the conical sleeve, and the elastic rod is fixedly mounted on the top of the outer sleeve, and a round ball is fixedly mounted on the top of the elastic rod; A gas production unit is arranged on the inner wall of the conical sleeve, and the ball squeezes the side wall of the gas production unit to generate airflow; A cavity is provided inside the outer shell and is located above the body, wherein a heat dissipation unit connected to the gas outlet of the gas production unit is provided inside the cavity; An air pressure plugging unit is arranged below the pressure detection head and is in communication with the cavity; A vibration monitoring component is arranged inside the conical sleeve; An auxiliary heat dissipation component is arranged inside the cavity; The metering unit is arranged inside the cavity, and the vibration monitoring component is electrically connected to the auxiliary heat dissipation component through the control end of the body, and the auxiliary heat dissipation component cooperates with the metering unit to output an electrical signal to the control end of the body.

[0006] Preferably, the gas production unit includes an elastic airbag sleeve fixedly mounted on the inner wall of the conical sleeve, and the elastic airbag sleeve is arranged on the outside of the sphere, a plurality of auxiliary springs are fixedly arranged between the inner wall of the elastic airbag sleeve and the inner wall of the conical sleeve, the side wall of the conical sleeve is provided with two air inlet holes connected with the elastic airbag sleeve, and the two air inlet holes are both equipped with air inlet check valves, the side wall of the conical sleeve is fixedly connected with two exhaust pipes connected with the elastic airbag sleeve, and the two exhaust pipes are both equipped with exhaust check valves.

[0007] Preferably, the heat dissipation unit includes an arc-shaped heat-conducting plate fixedly inserted in the lower cavity wall of the cavity, and the side wall of the arc-shaped heat-conducting plate contacts the top of the body, and the side wall of the arc-shaped heat-conducting plate away from the body is fixedly installed with multiple heat sinks, and the cavity wall of the cavity is provided with multiple air-permeable micropores.

[0008] Preferably, the air pressure blocking unit includes an air vent opened inside the outer sleeve, and both hole ends of the air vent are connected to the cavity, two lower row pipes are fixedly inserted into the hole wall of the air vent, a round cover is fixedly installed on the bottom of the pressure detection head, and the detection end of the pressure detection head is connected to the interior of the round cover, a hollow block is provided below the pressure detection head, the bottom ends of the two lower row pipes pass through the end surface of the round cover and are connected to the interior of the hollow block, a sealing pressure block is provided above the hollow block, an air cap assembly is installed on the hollow block, and the sealing pressure block is installed at the telescopic end of the air cap assembly, an air pressure automatic switch is installed inside the cavity, and the air pressure automatic switch is electrically connected to the control end of the machine body.

[0009] Preferably, the vibration monitoring assembly includes a mounting groove opened on the upper wall of the sphere, and a first spotlight is fixedly installed inside the mounting groove, an insulating ring coaxial with the elastic rod is provided above the sphere, and two supporting rods are fixedly provided between the insulating ring and the inner wall of the conical sleeve, an annular photoresistor is fixedly installed on the lower end surface of the insulating ring, and the first spotlight is electrically connected to the control end of the body.

[0010] Preferably, the auxiliary heat dissipation component includes a motor fixedly mounted on the upper wall of the cavity, and a micro blade is fixedly mounted on the output shaft of the motor, and the annular photoresistor is electrically connected to the motor through the control end of the body.

[0011] Preferably, the metering unit includes a connecting block fixedly mounted on the cavity wall, and the connecting block is arranged below the micro-blade, a second spotlight is fixedly mounted on the upper end face of the connecting block, a photoelectric switch is mounted on the upper cavity wall of the cavity above the second spotlight, the light emitted by the second spotlight is irradiated to the photosensitive end of the photoelectric switch through the gap of the micro-blade, a pulse counter is fixedly mounted inside the cavity, and the photoelectric switch is electrically connected to the pulse counter through the control end of the body, and the second spotlight is electrically connected to the control end of the body.

[0012] Preferably, the gas top assembly includes a plurality of cylinders integrally formed and arranged on the top of the hollow block, and a circular groove is opened at the bottom of each cylinder, a telescopic rod is slidably connected to the bottom of each circular groove, and an air push piston is fixedly installed at the bottom of each telescopic rod, the air push piston is slidably arranged inside the circular groove, and a supporting spring is fixedly arranged between the air push piston and the bottom of the circular groove, and each telescopic rod is fixedly connected to the bottom of the sealing pressure block.

[0013] Compared with existing technologies, the advantages of a protective pressure transmitter are: 1. Through the cooperation of the body, pressure detection head, outer sleeve, conical sleeve, elastic rod and round ball, when the pressure transmitter vibrates and the pipeline vibration is transmitted to the body of the pressure transmitter, the elastic rod will deform and absorb part of the vibration energy, thereby reducing the vibration amplitude transmitted to the transmitter. The steel ball on the top of the elastic rod can increase the inertia of the whole device, further hinder the rapid transmission of vibration, help stabilize the pressure transmitter and reduce the impact of vibration on it.

[0014] 2. Through the cooperation of the gas production unit, cavity and heat dissipation unit, the elastic rod can be used to drive the ball to shake to generate airflow, and the airflow can be used to assist the body to dissipate heat and cool down, thereby reducing the impact of temperature on the working stability of the pressure transmitter body.

[0015] 3. The pneumatic sealing unit can automatically seal the detection end of the pressure detection head when the vibration amplitude is large and the vibration frequency is high, so as to prevent the medium with too fast pressure changes from damaging the detection end of the pressure detection head.

[0016] 4. Through the cooperation of the vibration monitoring components, auxiliary heat dissipation components and metering units, it can not only further assist the heat dissipation of the machine body, but also timely remind personnel to perform maintenance on the pressure transmitter based on the vibration amplitude and frequency, thereby reducing the possibility of damage to the pressure transmitter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a protective pressure transmitter provided by the present invention; Figure 2 It is a schematic diagram of the internal structure of a jacket of a protective pressure transmitter provided by the present invention; Figure 3 The invention provides a protective pressure transmitter. Figure 2 A magnified view of the structure of part A; Figure 4 It is a schematic diagram of the internal structure of a hollow block of a protective pressure transmitter provided by the present invention; Figure 5 It is a three-dimensional structural schematic diagram of an insulating ring of a protective pressure transmitter provided by the present invention; Figure 6 The invention provides a protective pressure transmitter. Figure 2 A magnified view of the structure of part B.

[0018] In the figure: 1 body, 2 pressure detection head, 3 outer sleeve, 4 conical sleeve, 5 elastic rod, 6 ball, 7 gas generating unit, 71 elastic air bag sleeve, 72 auxiliary spring, 73 air inlet, 74 air inlet check valve, 75 exhaust pipe, 76 exhaust check valve, 8 cavity, 9 heat dissipation unit, 91 arc-shaped heat conducting plate, 92 heat sink, 93 air permeable micropores, 10 air pressure blocking unit, 101 air vent, 102 lower exhaust pipe, 103 round cover, 104 hollow block, 105 sealing pressure block, 106 Air pressure automatic switch, 11 vibration monitoring component, 111 mounting groove, 112 first spotlight, 113 insulating ring, 114 supporting rod, 115 annular photoresistor, 12 auxiliary heat dissipation component, 121 motor, 122 micro blades, 13 metering unit, 131 connecting block, 132 second spotlight, 133 photoelectric switch, 134 pulse counter, 14 air cap component, 141 cylinder, 142 circular groove, 143 telescopic rod, 144 air push piston, 145 supporting spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 6As shown, a protective pressure transmitter includes a body 1 and a pressure detection head 2 arranged at the bottom of the body 1. The body 1 includes a shell, a control board, a circuit board, a communication module, an alarm module and other components. The pressure detection head 2 includes a shell, an elastic diaphragm, a strain gauge, an output circuit, etc. This is an existing mature technology, so it is not described here. It also includes: a jacket 3, the jacket 3 is fixedly sleeved on the outer wall of the body 1, a conical sleeve 4 is fixedly installed on the top of the jacket 3, an elastic rod 5 is provided inside the conical sleeve 4, and the elastic rod 5 is fixedly installed on the top of the jacket 3, a ball 6 is fixedly installed on the top of the elastic rod 5, a gas production unit 7 is arranged on the inner wall of the conical sleeve 4, and the ball 6 squeezes the side wall of the gas production unit 7 To generate air flow, the gas production unit 7 includes an elastic airbag sleeve 71 fixedly mounted on the inner wall of the conical sleeve 4, and the elastic airbag sleeve 71 is sleeved on the outer side of the sphere 6, and a plurality of auxiliary springs 72 are fixedly arranged between the inner wall of the elastic airbag sleeve 71 and the inner wall of the conical sleeve 4, and the side wall of the conical sleeve 4 is provided with two air inlet holes 73 connected with the elastic airbag sleeve 71, and the two air inlet holes 73 are both provided with air inlet check valves 74, and the side wall of the conical sleeve 4 is fixedly connected with two exhaust pipes 75 connected with the elastic airbag sleeve 71, and the two exhaust pipes 75 are both provided with exhaust check valves 76, and under the action of the air inlet check valve 74 and the exhaust check valve 76, the air flow can only flow in a single direction.

[0021] The cavity 8 is opened inside the outer sleeve 3, and the cavity 8 is located above the body 1. The interior of the cavity 8 is provided with a heat dissipation unit 9 connected to the air outlet end of the gas production unit 7. The heat dissipation unit 9 includes an arc-shaped heat conducting plate 91 fixedly inserted into the lower cavity wall of the cavity 8, and the side wall of the arc-shaped heat conducting plate 91 is in contact with the top of the body 1. A plurality of heat sinks 92 are fixedly installed on the side wall of the arc-shaped heat conducting plate 91 away from the body 1. A plurality of air-permeable micropores 93 are opened on the cavity wall of the cavity 8. The heat sink 92 can increase the heat dissipation speed of the arc-shaped heat conducting plate 91.

[0022] The air pressure blocking unit 10 is arranged below the pressure detection head 2, and the air pressure blocking unit 10 is connected to the cavity 8. The air pressure blocking unit 10 includes a vent hole 101 opened inside the outer sleeve 3, and both hole ends of the vent hole 101 are connected to the cavity 8. Two lower row pipes 102 are fixedly plugged into the hole wall of the vent hole 101. A round cover 103 is fixedly installed at the bottom of the pressure detection head 2, and the detection end of the pressure detection head 2 is connected to the inside of the round cover 103. A hollow block 104 is provided below the pressure detection head 2. The bottom ends of the two lower row pipes 102 pass through the end surface of the round cover 103 and are connected to the interior of the hollow block 104. A sealing pressure block 105 is provided above the hollow block 104. The hollow block 104 is equipped with a gas cap assembly 14, and the sealing pressure block 105 is installed at the telescopic end of the gas cap assembly 14. An automatic air pressure switch 106 is installed inside the cavity 8, and the automatic air pressure switch 106 is electrically connected to the control end of the body 1. When the moving contact of the automatic air pressure switch 106 is subjected to air pressure, its moving contact will be pressed back and closed.

[0023] The gas cap assembly 14 includes a plurality of cylinders 141 integrally formed and arranged at the top of the hollow block 104, and a circular groove 142 is opened at the bottom of each cylinder 141, and a telescopic rod 143 is slidably connected to the bottom of each circular groove 142, and a gas push piston 144 is fixedly installed at the bottom of each telescopic rod 143, and the gas push piston 144 is slidably arranged inside the circular groove 142, and a support spring 145 is fixedly arranged between the gas push piston 144 and the bottom of the circular groove 142, and each telescopic rod 143 is fixedly connected to the bottom of the sealing pressure block 105. Under the action of the support spring 145, after the vibration disappears, since the exhaust pipe 75 can no longer exhaust, the support spring 145 can make the sealing pressure block 105 move back and reset through the gas push piston 144 and the telescopic rod 143.

[0024] The vibration monitoring component 11 is arranged inside the conical sleeve 4, and the vibration monitoring component 11 includes a mounting groove 111 opened on the upper wall of the sphere 6, and a first spotlight 112 is fixedly installed inside the mounting groove 111, an insulating ring 113 coaxial with the elastic rod 5 is provided above the sphere 6, and two supporting rods 114 are fixedly provided between the insulating ring 113 and the inner wall of the conical sleeve 4, and an annular photoresistor 115 is fixedly installed on the lower end surface of the insulating ring 113, the first spotlight 112 is electrically connected to the control end of the body 1, and when the annular photoresistor 115 is exposed to light, its own resistance will be reduced synchronously (the light intensity range is between 10Lux and 100Lux).

[0025] The auxiliary heat dissipation component 12 is arranged inside the cavity 8. The auxiliary heat dissipation component 12 includes a motor 121 fixedly mounted on the upper wall of the cavity 8, and the output shaft of the motor 121 is fixedly mounted with a micro blade 122. The annular photoresistor 115 is electrically connected to the motor 121 through the control end of the body 1. When the motor 121 drives the micro blade 122 to rotate, it can increase the air flow speed inside the cavity 8, thereby assisting the body 1 in cooling down.

[0026] The metering unit 13 is arranged inside the cavity 8, and the vibration monitoring component 11 is electrically connected to the auxiliary heat dissipation component 12 through the control end of the body 1, and the auxiliary heat dissipation component 12 cooperates with the metering unit 13 to output an electrical signal to the control end of the body 1, and the metering unit 13 includes a connecting block 131 fixedly installed on the cavity wall of the cavity 8, and the connecting block 131 is arranged below the micro blade 122, and a second spotlight 132 is fixedly installed on the upper end surface of the connecting block 131, and a photoelectric switch is installed at a position above the second spotlight 132 on the upper cavity wall of the cavity 8 133, the light emitted by the second spotlight 132 is irradiated to the photosensitive end of the photoelectric switch 133 through the gap of the micro-blade 122, a pulse counter 134 is fixedly installed inside the cavity 8, and the photoelectric switch 133 is electrically connected to the pulse counter 134 through the control end of the body 1, the second spotlight 132 is electrically connected to the control end of the body 1, the pulse counter 134 receives the pulse signal, counts, and outputs an electrical signal to the control end of the body 1 after the count reaches the set value. This is an existing mature technology, so it will not be described here.

[0027] The operating principle of the present invention is now described as follows: the entire device is installed on the conveying pipeline of the medium to be detected, so that the pressure detection head 2 is inside the conveying pipeline, and then the control end of the body 1 is connected to the external power supply circuit, and the control end of the body 1 is started. At this time, when the medium passes through the inside of the conveying pipeline, the medium will exert pressure on the elastic diaphragm of the pressure detection head 2. Under the action of this pressure, the strain gauge in the elastic diaphragm will be deformed, so that its own resistance will change. At this time, the measurement circuit of the control end of the body 1 will measure and process the electrical signal output by the strain gauge, and further process and convert the signal output by the measurement circuit to make it a standard output signal (for example, converting the electrical signal into a 4mA-20mA current signal or a 0V-5V voltage signal, etc.), and output the analog signal to the corresponding terminal, and display the pressure value through its own display end; During the medium conveying process, if the medium is conveyed unevenly or impacts the pipeline, the conveying pipeline will vibrate, and the vibration force will be transmitted to the machine body 1. Under the action of the vibration force, the machine body 1 drives the elastic rod 5 to vibrate synchronously. The elastic rod 5 will undergo elastic deformation under the action of the vibration, and this deformation can absorb part of the vibration energy, so that the amplitude of the vibration gradually decreases. Since a sphere 6 is provided on the top of the elastic rod 5, under the action of inertia, the vibration direction of the sphere 6 is opposite to that of the machine body 1, thereby further slowing down the vibration. By consuming and offsetting part of the vibration force, the influence of the vibration on the machine body 1 and the pressure detection head 2 can be reduced to a certain extent (the elastic rod 5 is made of a material with good elasticity, such as a rubber rod. As the external vibration gradually decreases, the elastic rod 5 gradually stabilizes. In the vibration, since the sphere 6 hits the elastic airbag sleeve 71, the rebound of the elastic rod 5 and the sphere 6 will not increase the vibration force on the conical sleeve 4); Secondly, when vibration occurs, since the displacement direction of the ball 6 is opposite to the vibration direction of the body 1, and the conical sleeve 4 vibrates synchronously with the body 1, when vibration occurs, the ball 6 will hit and squeeze the side wall of the elastic airbag sleeve 71. When the elastic airbag sleeve 71 is squeezed, the air inside it will be squeezed and discharged through the exhaust pipe 75. When the ball 6 leaves the elastic airbag sleeve 71, under the elastic action of the elastic airbag sleeve 71 itself and the auxiliary rebound action of the auxiliary spring 72, the elastic airbag sleeve 71 will rebound and recover quickly. Since part of the air inside it is discharged, the air pressure inside it is lower than the external air pressure. Under the action of the internal and external pressure difference, the external air pressure will be supplemented into the elastic airbag sleeve 71 through the air inlet hole 73. Under the continuous vibration of the ball 6, the elastic airbag sleeve 71 will continue to discharge airflow through the exhaust pipe 75 (under the action of the air inlet check valve 74 and the exhaust check valve 76, the airflow can only enter along the air inlet hole 73 and can only be discharged through the exhaust pipe 75); When the body 1 is working, the components inside it will generate heat (which is beneficial to the circuit board, etc.), and the heat will be transferred to the arc-shaped heat-conducting plate 91 and each heat sink 92 through the shell of the body 1, and the airflow discharged from the exhaust pipe 75 will enter the cavity 8 and be discharged through the air-permeable micropores 93 on the side wall of the cavity 8. Under the action of the flowing airflow, the heat on the surface of the heat sink 92 and the arc-shaped heat-conducting plate 91 can be taken away, thereby assisting the heat dissipation of the body 1 and improving the working stability of the body 1. Secondly, when the vibration amplitude is large and the frequency is high, the ball 6 squeezes a large amount of air into the cavity 8 through the elastic airbag sleeve 71, and the exhaust speed of the air-permeable micropores 93 is limited, so the gas inside the cavity 8 cannot be discharged in time through the air-permeable micropores 93. At this time, the air pressure inside the cavity 8 increases. Under the action of the increased air pressure, the excess air will enter the hollow block 104 through the vent hole 101 and the lower exhaust pipe 102. Under the action of the air pressure, each air push piston 144 will be pushed upward, so that the sealing pressing block 105 can be pushed upward, so that the sealing pressing block 105 is against the bottom of the round cover 103, so that the round cover 103 can be sealed. At this time, The external medium will be isolated from the medium inside the pressure detection head 2, so the pressure change of the external medium will not affect the inside of the pressure detection head 2, thereby preventing the elastic diaphragm inside the pressure detection head 2 from being damaged by the medium with abnormal pressure. At the same time, due to the increase in the air pressure inside the cavity 8, the moving contact of the air pressure automatic switch 106 will be closed by back pressure under the action of pressure. At this time, the air pressure automatic switch 106 will output an electrical signal to the control end of the body 1, and the control end of the body 1 will send an alarm signal to the terminal device. At the same time, the alarm module inside the control end of the body 1 will also sound an alarm on site. After receiving the alarm information, the personnel should check the medium transportation in time. After the control end of the machine body 1 is started, the first spotlight 112 will be started synchronously, and the first spotlight 112 will emit light. When the machine body 1 is not vibrating, the light emitted by the first spotlight 112 will pass through the center of the insulating ring 113. At this time, the annular photoresistor 115 cannot receive the light. When the machine body 1 vibrates, since the elastic rod 5 and the ball 6 will move synchronously, the first spotlight 112 will also move synchronously, so that the annular photoresistor 115 will receive the light. At this time, the annular photoresistor 115 will reduce its own resistance due to the light exposure. At the same time, the control end of the machine body 1 starts the first spotlight 11 2, the motor 121 is started synchronously, and the motor 121 can drive the micro blades 122 to rotate, thereby driving the air flow inside the cavity 8. In this way, even when the body 1 does not vibrate, the air flow of the micro blades 122 can assist the body 1 in cooling down. When the body 1 vibrates, the resistance of the annular photoresistor 115 decreases, so the current flowing into the motor 121 will increase synchronously. At this time, the output power of the motor 121 increases, so the rotation speed of the micro blades 122 becomes faster (the higher the vibration amplitude and frequency, the faster the annular photoresistor 115 receives the light from the first spotlight 112). The longer the time is, the longer the motor 121 keeps rotating at high power). When the micro blades 122 rotate, their blades will block the light emitted by the second spotlight 132. After the blades leave, the light emitted by the second spotlight 132 will pass through the gap between two adjacent blades to irradiate the photosensitive end of the photoelectric switch 133. After receiving the light, the photoelectric switch 133 will convert the light signal into an electrical signal and output the electrical signal to the pulse counter 134. At this time, the pulse counter 134 will increase the count once. After the pulse counter 134 counts to the set value, the pulse counter 134 will output an electrical signal to the control end of the body 1. Signal, the control end of the body 1 will send an alarm signal to the terminal device. At the same time, the alarm module inside the control end of the body 1 will also alarm on site (the alarm signal is distinguished from the alarm method corresponding to the air pressure automatic switch 106, so as to facilitate personnel to distinguish). After receiving the alarm information, the personnel should perform maintenance on the entire device in time. Since vibration will increase the workload of the body 1 and the pressure detection head 2, and the instability of the body 1 and the pressure detection head 2 will increase, the counting speed of the pulse counter 134 will be increased during vibration, which can remind personnel in advance to perform maintenance alarms on the entire device and reduce the possibility of damage to the device.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A protective pressure transmitter, comprising a body (1) and a pressure detection head (2) arranged at the bottom of the body (1), characterized in that: Also includes: An outer sleeve (3) is fixedly sleeved on the outer wall of the body (1); a conical sleeve (4) is fixedly mounted on the top of the outer sleeve (3); an elastic rod (5) is provided inside the conical sleeve (4); the elastic rod (5) is fixedly mounted on the top of the outer sleeve (3); a sphere (6) is fixedly mounted on the top of the elastic rod (5); a gas production unit (7) is arranged on the inner wall of the conical sleeve (4); the sphere (6) squeezes the side wall of the gas production unit (7) to generate airflow; a cavity (8) is opened inside the outer sleeve (3); the cavity (8) is located above the body (1); the cavity (8) is provided with a gas production unit (7) in contact with the gas production unit (7); A heat dissipation unit (9) connected to the air outlet; an air pressure blocking unit (10) arranged below the pressure detection head (2), and the air pressure blocking unit (10) is connected to the cavity (8); a vibration monitoring component (11) is arranged inside the conical sleeve (4); an auxiliary heat dissipation component (12) is arranged inside the cavity (8); a metering unit (13) is arranged inside the cavity (8), and the vibration monitoring component (11) is electrically connected to the auxiliary heat dissipation component (12) through the control end of the machine body (1), and the auxiliary heat dissipation component (12) cooperates with the metering unit (13) to output an electrical signal to the control end of the machine body (1).

2. A protective pressure transmitter according to claim 1, characterized in that: The gas production unit (7) comprises an elastic airbag sleeve (71) fixedly mounted on the inner wall of the conical sleeve (4), and the elastic airbag sleeve (71) is sleeved on the outer side of the sphere (6), a plurality of auxiliary springs (72) are fixedly mounted between the inner wall of the elastic airbag sleeve (71) and the inner wall of the conical sleeve (4), the side wall of the conical sleeve (4) is provided with two air inlet holes (73) connected to the elastic airbag sleeve (71), and the two air inlet holes (73) are both provided with air inlet check valves (74), and the side wall of the conical sleeve (4) is fixedly plugged with two exhaust pipes (75) connected to the elastic airbag sleeve (71), and the two exhaust pipes (75) are both provided with exhaust check valves (76).

3. A protective pressure transmitter according to claim 1, characterized in that: The heat dissipation unit (9) comprises an arc-shaped heat conducting plate (91) fixedly plugged into the lower cavity wall of the cavity (8), and the side wall of the arc-shaped heat conducting plate (91) is in contact with the top of the machine body (1), a plurality of heat dissipation fins (92) are fixedly mounted on the side wall of the arc-shaped heat conducting plate (91) away from the machine body (1), and a plurality of air permeable micropores (93) are provided on the cavity wall of the cavity (8).

4. A protective pressure transmitter according to claim 1, characterized in that: The air pressure blocking unit (10) comprises a vent hole (101) provided inside the outer sleeve (3), and both ends of the vent hole (101) are connected to the cavity (8), two lower row pipes (102) are fixedly plugged into the hole wall of the vent hole (101), a round cover (103) is fixedly installed at the bottom of the pressure detection head (2), and the detection end of the pressure detection head (2) is connected to the inside of the round cover (103), a hollow block (104) is provided below the pressure detection head (2), and two The bottom end of the lower row pipe (102) passes through the end surface of the circular cover (103) and is connected to the interior of the hollow block (104); a sealing pressure block (105) is provided above the hollow block (104); a gas cap assembly (14) is installed on the hollow block (104); and the sealing pressure block (105) is installed at the telescopic end of the gas cap assembly (14); an air pressure automatic switch (106) is installed inside the cavity (8); and the air pressure automatic switch (106) is electrically connected to the control end of the machine body (1).

5. The protective pressure transmitter according to claim 1, characterized in that: The vibration monitoring assembly (11) comprises a mounting groove (111) formed on the upper wall of the sphere (6), and a first spotlight (112) is fixedly mounted inside the mounting groove (111); an insulating ring (113) coaxial with the elastic rod (5) is provided above the sphere (6), and two supporting rods (114) are fixedly mounted between the insulating ring (113) and the inner wall of the conical sleeve (4); a ring-shaped photoresistor (115) is fixedly mounted on the lower end surface of the insulating ring (113); and the first spotlight (112) is electrically connected to a control end of the machine body (1).

6. A protective pressure transmitter according to claim 5, characterized in that: The auxiliary heat dissipation component (12) comprises a motor (121) fixedly mounted on the upper wall of the cavity (8), and a micro blade (122) is fixedly mounted on the output shaft of the motor (121), and the annular photoresistor (115) is electrically connected to the motor (121) via a control end of the machine body (1).

7. A protective pressure transmitter according to claim 6, characterized in that: The metering unit (13) comprises a connecting block (131) fixedly mounted on the cavity wall of the cavity (8), and the connecting block (131) is arranged below the micro blade (122); a second spotlight (132) is fixedly mounted on the upper end surface of the connecting block (131); a photoelectric switch (133) is mounted on the upper cavity wall of the cavity (8) at a position above the second spotlight (132); light emitted by the second spotlight (132) is irradiated to the photosensitive end of the photoelectric switch (133) through the gap of the micro blade (122); a pulse counter (134) is fixedly mounted inside the cavity (8), and the photoelectric switch (133) is electrically connected to the pulse counter (134) via the control end of the machine body (1); and the second spotlight (132) is electrically connected to the control end of the machine body (1).

8. The protective pressure transmitter according to claim 4, characterized in that: The gas cap assembly (14) comprises a plurality of cylinders (141) integrally formed and arranged at the top of the hollow block (104), and a circular groove (142) is provided at the bottom of each cylinder (141), a telescopic rod (143) is slidably connected to the bottom of each circular groove (142), and a gas push piston (144) is fixedly installed at the bottom of each telescopic rod (143), the gas push piston (144) is slidably arranged inside the circular groove (142), and a support spring (145) is fixedly arranged between the gas push piston (144) and the bottom of the circular groove (142), and each telescopic rod (143) is fixedly connected to the bottom of the sealing pressure block (105).

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