Pressure transmitter with overpressure protection function

Abstract

The invention discloses a pressure transmitter with an overpressure protection function, which is applied to the technical field of pressure transmitters, and is characterized in that a buffer mechanism is arranged, a body assembly can be matched with a pressure relief assembly, a connecting assembly, a buffer assembly and a discharge assembly, and the connecting assembly can further limit the body assembly and the pressure relief assembly; according to the pressure transmitter, the overpressure at the body assembly is discharged to the buffer assembly through the pressure relief assembly, the buffer assembly can buffer the overpressure, when the pressure in the buffer assembly is too high, the pressure can be transmitted to the discharge assembly and discharged, the effect of buffering the overpressure is achieved, and the stability and flexibility of the pressure transmitter in use are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure transmitters, and in particular relates to a pressure transmitter with an overpressure protection function. Background Art

[0002] As we all know, pressure measurement is crucial in industrial production and many fields. Pressure transmitters came into being. They are precision instruments that convert pressure signals into standard electrical signals. They are widely used in petroleum, chemical, electric power and other industries. Traditional pressure transmitters can accurately measure pressure, but in the face of sudden overpressure conditions, such as a sudden increase in pressure in chemical pipelines and out-of-control steam pressure in power plants, they are easily damaged, which can lead to leakage, explosion and other dangers, endangering the safety of personnel and equipment. This has prompted the development of pressure transmitters with overpressure protection functions.

[0003] At present, there is a Chinese invention with the publication number of CN113203518B. This invention relates to the technical field of pressure transmitters and is used to solve the problem of poor overpressure protection effect of existing pressure transmitters. Specifically, it is a pressure transmitter with overpressure protection, including a pressure inlet chamber, a conversion chamber and a display. A pressure input port is arranged at the bottom of the pressure inlet chamber, and buffer chambers are arranged on both sides of the pressure inlet chamber. An input pipe is fixedly connected between one end of the buffer chamber and the inner side wall of the pressure inlet chamber, a connecting pipe is arranged between the other end of the buffer chamber and the inner side wall of the pressure inlet chamber, a pressure relief pipe is fixedly connected to the inner side wall of the buffer chamber away from the pressure inlet chamber, and a buffer diaphragm is arranged between the inner side walls of the buffer chamber. This invention prevents the pressure fluid from continuously entering the pressure inlet chamber until the pressure exceeds the threshold value before overpressure protection is performed, thereby damaging the pressure sensor.

[0004] Existing pressure transmitters with overpressure protection function have the following disadvantages when used:

[0005] 1. When the pressure transmitter is protected against overpressure, due to the lack of an overpressure buffer emergency discharge structure, the overpressure cannot be buffered, reducing the flexibility of overpressure emergency discharge;

[0006] 2. When maintaining the pressure transmitter, due to the lack of a structure for individually disassembling and assembling maintenance of each component of the pressure transmitter, it is impossible to individually disassemble and assemble maintenance of each component, which reduces the flexibility of maintaining the pressure transmitter. Summary of the invention

[0007] The purpose of the present invention is to provide an existing pressure transmitter with overpressure protection function, and the advantages are:

[0008] 1. When the pressure transmitter is protected against overpressure, the overpressure can be buffered due to the overpressure buffer emergency discharge structure, which improves the flexibility of overpressure emergency discharge;

[0009] 2. When maintaining the pressure transmitter, since it has a structure for individually disassembling and assembling maintenance of each component of the pressure transmitter, each component can be individually disassembled and maintained, which improves the flexibility of maintaining the pressure transmitter.

[0010] The above technical objectives of the present invention are achieved through the following technical solutions: A pressure transmitter with overpressure protection function, including a buffer mechanism and a disassembly mechanism, the disassembly mechanism is arranged on the rear side of the buffer mechanism, the buffer mechanism includes a main body component, a pressure relief component, a connecting component, a buffer component and a discharge component, the pressure relief component is clamped at the bottom of the main body component, the connecting component is arranged on the left side of the main body component and the left side of the pressure relief component, the buffer component is arranged on the front side of the pressure relief component, the discharge component is arranged on the top of the buffer component, the disassembly mechanism includes a positioning component, a clamping component, a locking component and a module component, the positioning component is arranged on the rear side of the main body component, the clamping component is arranged on the top of the positioning component, the locking component is arranged on the surface of the clamping component, and the module component is arranged on the top of the clamping component.

[0011] By adopting the above technical solution, a buffer mechanism and a disassembly mechanism are set up. The buffer mechanism can buffer and release the overpressure, thereby having the effect of buffering the overpressure. The disassembly mechanism can facilitate the separate disassembly and assembly of the module components, detection components and signal components, thereby increasing the flexibility of maintaining the pressure transmitter.

[0012] The present invention is further configured as follows: the body assembly includes a pressure transmitter body, a positioning base plate and a mounting tube, the positioning base plate is fixedly connected to the bottom of the pressure transmitter body, and the mounting tube is connected to the bottom of the positioning base plate.

[0013] By adopting the above technical solution, through setting up the main body assembly, the pressure transmitter body can cooperate with the positioning base plate and the mounting tube. The pressure transmitter body is an existing pressure transmitter device. The positioning base plate can limit the mounting tube, so that the pressure transmitter body can be connected to the pressure relief assembly.

[0014] The present invention is further configured as follows: the pressure relief assembly includes a connecting pipe, a drainage groove and a pressure relief pipe, the connecting pipe is clamped on the surface of the mounting pipe, the drainage groove is opened on the inner side of the connecting pipe, the pressure relief pipe is connected to the front side of the connecting pipe, and the rear side of the pressure relief pipe is close to the front side of the drainage groove.

[0015] By adopting the above technical solution and setting up a pressure relief assembly, the connecting pipe can cooperate with the drainage groove and the pressure relief pipe. By limiting the installation pipe through the connecting pipe, the connecting pipe can be externally connected to the equipment in use. The drainage groove can concentrate the pressure to the pressure relief pipe, thereby transmitting the excess pressure to the buffer assembly.

[0016] The present invention is further configured as follows: the connecting assembly includes a connecting plate, a magnetic connecting rod and a magnetic connecting tube, the connecting plate is fixedly connected to the left side of the positioning base plate, the magnetic connecting rod is fixedly connected to the bottom of the connecting plate, the magnetic connecting tube is fixedly connected to the left side of the connecting tube, and the surface of the magnetic connecting rod is clamped with the inner side of the magnetic connecting tube.

[0017] By adopting the above technical solution, through setting up a connecting assembly, the connecting plate can cooperate with the magnetic connecting rod and the magnetic connecting cylinder. By connecting the magnetic connecting rod and the magnetic connecting cylinder, the position of the connecting plate can be limited, which can increase the stability and flexibility when connecting the installation pipe and the connecting pipe.

[0018] The present invention is further configured as follows: the buffer assembly includes a buffer plate, a compensator and a bursting membrane, the buffer plate is fixedly connected to the front side of the connecting pipe, the compensator is fixedly connected to the inner side of the buffer plate, the bursting membrane is fixedly connected to the bottom of the compensator, and the rear side of the compensator is connected to the front side of the pressure relief pipe.

[0019] By adopting the above technical solution, a buffer assembly is set up, and the buffer plate can cooperate with the compensator and the bursting membrane. The compensator is limited by the buffer plate, so that the pressure relief pipe can transmit the overpressure to the compensator for buffering. When the pressure is too high and needs to be discharged, the compensator can transmit the pressure to the discharge assembly for discharge. When the pressure is too high and needs emergency discharge, the bursting membrane will rupture due to the excessive pressure for emergency pressure relief.

[0020] The present invention is further configured as follows: the discharge assembly includes a pressure relief valve, a pressure guiding pipe and a protective cover plate, the pressure relief valve is connected to the top of the compensator, the pressure guiding pipe is connected to the top of the pressure relief valve, and the protective cover plate is clamped on the output end on the front side of the pressure guiding pipe.

[0021] By adopting the above technical solution and setting up a discharge assembly, the pressure relief valve can cooperate with the pressure guiding pipe and the protective cover plate, and the excess pressure can be transmitted to the pressure guiding pipe through the pressure relief valve. The pressure guiding pipe can discharge the excess pressure to the outside. When there is no pressure to be discharged, the protective cover plate will close the pressure guiding pipe to protect the output end of the pressure guiding pipe.

[0022] The present invention is further configured as follows: the positioning assembly includes a positioning base, a wire tie rod and a magnetic plate, the positioning base is fixedly connected to the rear side of the pressure transmitter body, the three wire tie rods are respectively fixedly connected to the left side of the inner bottom of the positioning base, the right side of the inner bottom and the rear side of the inner bottom, and the magnetic plate is fixedly connected to the top of the wire tie rod.

[0023] By adopting the above technical solution, through setting the positioning component, the positioning base can cooperate with the wire tie rod and the magnetic plate, and the wire tie rod is limited by the positioning base. The wire tie rod can be connected to the pressure transmitter body by external wires, and the magnetic plate can be connected to the external wires, and the card-connecting component can be connected, so that the information transmitted by the card-connecting component can be transmitted to the external wires and to the pressure transmitter body.

[0024] The present invention is further configured as follows: the snap-on assembly includes a connecting magnetic sheet, a snap-on rod and a reset spring, the connecting magnetic sheet is arranged on the top of the magnetic attraction plate, the snap-on rod is fixedly connected to the top of the connecting magnetic sheet, and the reset spring is snap-on to the top of the inner side of the snap-on rod.

[0025] By adopting the above technical solution, through setting up a snap-in assembly, the connecting magnetic sheet can cooperate with the snap-in rod and the reset spring, and by limiting the snap-in rod with the connecting magnetic sheet, the snap-in rod can connect the module assembly with the wiring harness rod, and can move with the module assembly in the locking assembly to cancel the connection with the magnetic suction plate. The reset spring can reset the snap-in rod when the connecting magnetic sheet is not connected to the magnetic suction plate, so as to facilitate the removal of the module assembly for maintenance.

[0026] The present invention is further configured as follows: the locking assembly includes a positioning ring, a guide hole plate, a positioning plate, an insertion hole and a positioning groove, the positioning ring is fixedly connected to the top of the positioning base, the guide hole plate is rotatably connected to the inner side of the positioning ring, the inner side of the guide hole plate is in contact with the surface of the clamping rod, the positioning plate is clamped to the top of the inner side of the positioning base, the three insertion holes are respectively opened on the left side of the top of the positioning plate, the right side of the top and the rear side of the top, the positioning groove is opened on one side of the top of the positioning plate close to the insertion hole, and the positioning groove is connected to the insertion hole.

[0027] By adopting the above technical solution and setting a locking component, the positioning ring can cooperate with the guide hole plate, the positioning plate, the insertion hole and the positioning groove. The guide hole plate can be limited by the positioning ring, so that the guide hole plate can be rotated in the positioning ring to achieve the effect of driving the module assembly to move. The insertion hole can limit the connection of the connecting magnetic sheet and guide the clamping rod into the positioning groove, so that the clamping rod is limited in the positioning groove and the clamping rod is connected to the magnetic suction plate through the connecting magnetic sheet.

[0028] The present invention is further configured as follows: the module assembly includes a detection module, a signal module and a power connection module, the detection module is fixedly connected to the rear side of the top of the clamping rod, the signal module is fixedly connected to the right side of the top of the clamping rod, and the power connection module is fixedly connected to the left side of the top of the clamping rod.

[0029] By adopting the above technical solution, through setting up module components, the detection module can cooperate with the signal module and the power connection module. The detection module is an existing device for detecting pressure, which can detect the pressure delivered by the pressure transmitter body. The signal module is an existing remote information transmission structure, which can be externally connected to a remote control terminal to control the pressure transmitter body. The power connection module is an existing power connection port, which can be externally connected to a power supply to provide power support for the buffer mechanism and the disassembly and assembly mechanism as a whole. The detection module, signal module and power connection module are independent modules, so they can be easily disassembled and maintained separately.

[0030] In summary, the present invention has the following beneficial effects:

[0031] 1. By setting a buffer mechanism, the main body component can cooperate with the pressure relief component, the connecting component, the buffer component and the discharge component. The connecting component can further limit the main body component and the pressure relief component. The overpressure at the main body component is discharged to the buffer component through the pressure relief component, so that the buffer component can buffer the overpressure. When the pressure in the buffer component is too high, the pressure can be transmitted to the discharge component and discharged, which has the effect of buffering the overpressure and improves the stability and flexibility of the pressure transmitter when in use;

[0032] 2. By setting up a disassembly and assembly mechanism, the positioning component can cooperate with the snap-on component, the locking component and the module component. The positions of the snap-on component and the locking component can be limited by the positioning component. When the external wires of the positioning component are connected to the buffer mechanism, the information transmitted when the module component is connected to the snap-on component can be transmitted to the buffer mechanism, so that the buffer mechanism can process and analyze the pressure information. The snap-on component can change the connection between the module component and the positioning component as the locking component moves, so that the module component can be easily removed for maintenance, thereby improving the flexibility of maintaining the module component. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a schematic diagram of the structure of the buffer mechanism of the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the main body component of the present invention;

[0036] Figure 4 It is a schematic diagram of the structure of the pressure relief assembly and the connection assembly of the present invention;

[0037] Figure 5 It is a schematic diagram of the structure of the buffer assembly of the present invention;

[0038] Figure 6 is a schematic diagram of the structure of the discharge assembly of the present invention;

[0039] Figure 7 It is a schematic diagram of the disassembly and assembly mechanism structure of the present invention;

[0040] Figure 8 It is a schematic diagram of the structure of the positioning component of the present invention;

[0041] Fig. 9 It is a schematic diagram of the structure of the clamping assembly of the present invention;

[0042] Fig.10 is a schematic diagram of the locking assembly structure of the present invention;

[0043] Fig.11 It is a schematic diagram of the module assembly structure of the present invention.

[0044] Reference numerals: 1, buffer mechanism; 11, body assembly; 111, pressure transmitter body; 112, positioning base plate; 113, mounting pipe; 12, pressure relief assembly; 121, connecting pipe; 122, drainage groove; 123, pressure relief pipe; 13, connecting assembly; 131, connecting plate; 132, magnetic connecting rod; 133, magnetic connecting cylinder; 14, buffer assembly; 141, buffer plate; 142, compensator; 143, bursting membrane; 15, discharge assembly; 151, pressure relief valve; 152, guide Press tube; 153, protective cover; 2, disassembly and assembly mechanism; 21, positioning assembly; 211, positioning base; 212, cable tie rod; 213, magnetic plate; 22, snap-on assembly; 221, connecting magnetic sheet; 222, snap-on rod; 223, reset spring; 23, locking assembly; 231, positioning ring; 232, guide hole plate; 233, positioning plate; 234, insertion hole; 235, positioning groove; 24, module assembly; 241, detection module; 242, signal module; 243, power connection module. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0046] Embodiment 1:

[0047] refer to Figure 1-6A pressure transmitter with an overpressure protection function comprises a buffer mechanism 1, the buffer mechanism 1 comprises a main body component 11, a pressure relief component 12, a connecting component 13, a buffer component 14 and a discharge component 15, the pressure relief component 12 is clamped at the bottom of the main body component 11, the connecting component 13 is arranged on the left side of the main body component 11 and the left side of the pressure relief component 12, the buffer component 14 is arranged on the front side of the pressure relief component 12, and the discharge component 15 is arranged on the top of the buffer component 14. By setting the buffer mechanism 1, the main body component 11 can cooperate with the pressure relief component 12, the connecting component 13, the buffer component 14 and the discharge component 15, the connecting component 13 can further limit the main body component 11 and the pressure relief component 12, and the overpressure at the main body component 11 is discharged to the buffer component 14 through the pressure relief component 12, so that the buffer component 14 can buffer the overpressure. When the pressure in the buffer component 14 is too high, the pressure can be transmitted to the discharge component 15 and discharged, which has the effect of buffering the overpressure and improves the stability and flexibility of the pressure transmitter when in use.

[0048] like Figure 3 As shown, the main body component 11 includes a pressure transmitter body 111, a positioning base plate 112 and a mounting tube 113. The positioning base plate 112 is fixedly connected to the bottom of the pressure transmitter body 111, and the mounting tube 113 is connected to the bottom of the positioning base plate 112. By setting the main body component 11, the pressure transmitter body 111 can cooperate with the positioning base plate 112 and the mounting tube 113. The pressure transmitter body 111 is an existing pressure transmitter device. The positioning base plate 112 can limit the mounting tube 113, so that the pressure transmitter body 111 can be connected to the pressure relief component 12.

[0049] like Figure 4 As shown, the pressure relief assembly 12 includes a connecting pipe 121, a drainage groove 122 and a pressure relief pipe 123. The connecting pipe 121 is clamped on the surface of the mounting pipe 113, the drainage groove 122 is opened on the inner side of the connecting pipe 121, and the pressure relief pipe 123 is connected to the front side of the connecting pipe 121. The rear side of the pressure relief pipe 123 is close to the front side of the drainage groove 122. By setting the pressure relief assembly 12, the connecting pipe 121 can cooperate with the drainage groove 122 and the pressure relief pipe 123. By limiting the mounting pipe 113 by the connecting pipe 121, the connecting pipe 121 can be connected to the equipment in use. The drainage groove 122 can concentrate the pressure to the pressure relief pipe 123, so that the overpressure can be delivered to the buffer assembly 14.

[0050] like Figure 4As shown, the connecting component 13 includes a connecting plate 131, a magnetic connecting rod 132 and a magnetic connecting tube 133. The connecting plate 131 is fixedly connected to the left side of the positioning base plate 112, the magnetic connecting rod 132 is fixedly connected to the bottom of the connecting plate 131, and the magnetic connecting tube 133 is fixedly connected to the left side of the connecting tube 121. The surface of the magnetic connecting rod 132 is clamped with the inner side of the magnetic connecting tube 133. By setting the connecting component 13, the connecting plate 131 can cooperate with the magnetic connecting rod 132 and the magnetic connecting tube 133. By connecting the magnetic connecting rod 132 with the magnetic connecting tube 133, the position of the connecting plate 131 can be limited, which can increase the stability and flexibility of the installation tube 113 when connected to the connecting tube 121.

[0051] like Figure 5 As shown, the buffer assembly 14 includes a buffer plate 141, a compensator 142 and a bursting membrane 143. The buffer plate 141 is fixedly connected to the front side of the connecting pipe 121, the compensator 142 is fixedly connected to the inner side of the buffer plate 141, the bursting membrane 143 is fixedly connected to the bottom of the compensator 142, and the rear side of the compensator 142 is connected to the front side of the pressure relief pipe 123. By setting the buffer assembly 14, the buffer plate 141 can cooperate with the compensator 142 and the bursting membrane 143. The compensator 142 is limited by the buffer plate 141, so that the pressure relief pipe 123 can transmit the overpressure to the compensator 142 for buffering. When the pressure is too high and needs to be discharged, the compensator 142 can transmit the pressure to the discharge assembly 15 for discharge. When the pressure is too high and needs emergency discharge, the bursting membrane 143 will rupture due to the excessive pressure for emergency pressure relief.

[0052] like Figure 6 As shown, the discharge component 15 includes a pressure relief valve 151, a pressure guiding pipe 152 and a protective cover 153. The pressure relief valve 151 is connected to the top of the compensator 142, the pressure guiding pipe 152 is connected to the top of the pressure relief valve 151, and the protective cover 153 is snapped onto the output end of the front side of the pressure guiding pipe 152. By setting the discharge component 15, the pressure relief valve 151 can cooperate with the pressure guiding pipe 152 and the protective cover 153, and the excess pressure is transmitted to the pressure guiding pipe 152 through the pressure relief valve 151. The pressure guiding pipe 152 can discharge the excess pressure to the outside. When there is no pressure to be discharged, the protective cover 153 will close the pressure guiding pipe 152 to protect the output end of the pressure guiding pipe 152.

[0053] Brief description of the usage process: First, connect the pressure transmitter body 111 to the connecting pipe 121 through the installation pipe 113, and then connect the magnetic connecting rod 132 to the magnetic connecting tube 133, and then install the connecting pipe 121 on the equipment that needs to use the pressure transmitter body 111. After that, when the pressure is transmitted to the pressure transmitter body 111 to generate overpressure, the overpressure will be guided to the pressure relief pipe 123 through the drainage groove 122, and then enter the compensator 142 through the pressure relief pipe 123. The compensator 142 will buffer the overpressure. When the overpressure needs to be discharged, open the pressure relief valve 151 to allow the overpressure to be discharged from the pressure guiding pipe 152 until the overpressure is discharged and then close the protective cover 153. When the overpressure is too high to be discharged from the pressure guiding pipe 152, the bursting membrane 143 will rupture with the excessive pressure, thereby discharging the excess pressure.

[0054] Embodiment 2:

[0055] refer to Figure 7-11 A pressure transmitter with overpressure protection function includes a disassembly mechanism 2, which is arranged at the rear side of a buffer mechanism 1. The disassembly mechanism 2 includes a positioning component 21, a clamping component 22, a locking component 23 and a module component 24. The positioning component 21 is arranged at the rear side of a body component 11, the clamping component 22 is arranged at the top of the positioning component 21, the locking component 23 is arranged on the surface of the clamping component 22, and the module component 24 is arranged at the top of the clamping component 22. By setting the disassembly mechanism 2, the positioning component 21 can be connected with the clamping component 22, the locking component 23 and the module component 24. In cooperation, the positions of the snap-fit ​​component 22 and the locking component 23 are limited by the positioning component 21. When the external wire of the positioning component 21 is connected to the buffer mechanism 1, the information transmitted when the module component 24 is connected to the snap-fit ​​component 22 can be transmitted to the buffer mechanism 1, so that the buffer mechanism 1 can process and analyze the pressure information. The snap-fit ​​component 22 can change the connection between the module component 24 and the positioning component 21 as the locking component 23 moves, so that the module component 24 can be easily removed for maintenance, thereby improving the flexibility of maintaining the module component 24.

[0056] like Figure 8As shown, the positioning assembly 21 includes a positioning base 211, a wire tie rod 212 and a magnetic plate 213. The positioning base 211 is fixedly connected to the rear side of the pressure transmitter body 111. The three wire tie rods 212 are respectively fixedly connected to the left side of the inner bottom of the positioning base 211, the right side of the inner bottom and the rear side of the inner bottom. The magnetic plate 213 is fixedly connected to the top of the wire tie rod 212. By setting the positioning assembly 21, the positioning base 211 can cooperate with the wire tie rod 212 and the magnetic plate 213. The wire tie rod 212 is limited by the positioning base 211. The wire tie rod 212 can be connected to the pressure transmitter body 111 by external wires. The magnetic plate 213 can be connected to the external wires and the clamping assembly 22 is connected. The information transmitted by the clamping assembly 22 can be transmitted to the external wires and to the pressure transmitter body 111.

[0057] like Fig. 9 As shown, the clamping assembly 22 includes a connecting magnetic sheet 221, a clamping rod 222 and a reset spring 223. The connecting magnetic sheet 221 is arranged at the top of the magnetic attraction plate 213, the clamping rod 222 is fixedly connected to the top of the connecting magnetic sheet 221, and the reset spring 223 is clamped at the top of the inner side of the clamping rod 222. By setting the clamping assembly 22, the connecting magnetic sheet 221 can cooperate with the clamping rod 222 and the reset spring 223. By limiting the clamping rod 222 by the connecting magnetic sheet 221, the clamping rod 222 can connect the module assembly 24 with the wiring harness rod 212, and can move with the module assembly 24 in the locking assembly 23 to cancel the connection with the magnetic attraction plate 213. The reset spring 223 can reset the clamping rod 222 when the connecting magnetic sheet 221 is not connected to the magnetic attraction plate 213, so as to facilitate the removal of the module assembly 24 for maintenance.

[0058] like Fig.10As shown, the locking assembly 23 includes a positioning ring 231, a guide hole plate 232, a positioning plate 233, an insertion hole 234 and a positioning groove 235. The positioning ring 231 is fixedly connected to the top of the positioning base 211, the guide hole plate 232 is rotatably connected to the inner side of the positioning ring 231, the inner side of the guide hole plate 232 is in contact with the surface of the clamping rod 222, the positioning plate 233 is clamped on the top of the inner side of the positioning base 211, and the three insertion holes 234 are respectively opened on the left side of the top of the positioning plate 233, the right side of the top and the rear side of the top, and the positioning groove 235 is opened on one side of the top of the positioning plate 233 close to the insertion hole 234. The positioning groove 235 is connected to the The insertion hole 234 is connected. By setting the locking component 23, the positioning ring 231 can cooperate with the guide hole plate 232, the positioning plate 233, the insertion hole 234 and the positioning groove 235. The positioning ring 231 limits the guide hole plate 232, so that the guide hole plate 232 can rotate in the positioning ring 231 to achieve the effect of driving the module component 24 to move. The insertion hole 234 can limit the connection of the connecting magnetic sheet 221 and guide the clamping rod 222 to the positioning groove 235, so that the clamping rod 222 is limited in the positioning groove 235, and the clamping rod 222 is connected to the magnetic suction plate 213 through the connecting magnetic sheet 221.

[0059] like Fig.11 As shown, the module assembly 24 includes a detection module 241, a signal module 242 and a power connection module 243. The detection module 241 is fixedly connected to the rear side of the top of the clamping rod 222, the signal module 242 is fixedly connected to the right side of the top of the clamping rod 222, and the power connection module 243 is fixedly connected to the left side of the top of the clamping rod 222. By setting the module assembly 24, the detection module 241 can cooperate with the signal module 242 and the power connection module 243. The detection module 241 is an existing device for detecting pressure, which can detect the pressure delivered by the pressure transmitter body 111. The signal module 242 is an existing remote information transmission structure, which can be externally connected to a remote control terminal to control the pressure transmitter body 111. The power connection module 243 is an existing power connection port, which can be externally connected to a power supply to provide power support for the buffer mechanism 1 and the disassembly and assembly mechanism 2 as a whole. The detection module 241, the signal module 242 and the power connection module 243 are independent modules, respectively, so that they can be easily disassembled and maintained separately.

[0060] Brief description of the use process: First, the disassembly and assembly mechanism 2 is powered on and started. When the detection module 241, the signal module 242 or the power connection module 243 needs to be maintained, the guide hole plate 232 is rotated along the positioning ring 231, and the guide hole plate 232 will drive the clamping rod 222 to move in the positioning groove 235 toward the insertion hole 234, until the clamping rod 222 drives the connecting magnetic sheet 221 to move to the positioning groove 235 and break away from the magnetic attraction of the magnetic attraction plate 213, and the reset spring 223 is reset. The connecting rod 222 will be reset upward, and then the detection module 241, signal module 242 or power connection module 243 that needs maintenance can be taken out for maintenance. When the detection module 241, signal module 242 and power connection module 243 are reinstalled, the connecting rod 222 is reinserted into the insertion hole 234, and then the position of the guide hole plate 232 is reset, and the connecting rod 222 will move from the insertion hole 234 to the positioning groove 235 until the magnetic attraction plate 213 is connected to the connecting magnetic sheet 221.

[0061] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A pressure transmitter with overpressure protection function, comprising a buffer mechanism (1) and a disassembly mechanism (2), characterized in that: The disassembly and assembly mechanism (2) is arranged at the rear side of the buffer mechanism (1); the buffer mechanism (1) comprises a main body component (11), a pressure relief component (12), a connection component (13), a buffer component (14) and a discharge component (15); the pressure relief component (12) is snap-connected to the bottom of the main body component (11); the connection component (13) is arranged on the left side of the main body component (11) and the left side of the pressure relief component (12); the buffer component (14) is arranged on the front side of the pressure relief component (12); The discharge assembly (15) is arranged on the top of the buffer assembly (14); the disassembly and assembly mechanism (2) comprises a positioning assembly (21), a snap-fit ​​assembly (22), a locking assembly (23) and a module assembly (24); the positioning assembly (21) is arranged on the rear side of the main body assembly (11); the snap-fit ​​assembly (22) is arranged on the top of the positioning assembly (21); the locking assembly (23) is arranged on the surface of the snap-fit ​​assembly (22); and the module assembly (24) is arranged on the top of the snap-fit ​​assembly (22).

2. The pressure transmitter with overpressure protection function according to claim 1, characterized in that: The body assembly (11) comprises a pressure transmitter body (111), a positioning base plate (112) and a mounting tube (113); the positioning base plate (112) is fixedly connected to the bottom of the pressure transmitter body (111); and the mounting tube (113) is connected to the bottom of the positioning base plate (112).

3. The pressure transmitter with overpressure protection function according to claim 2, characterized in that: The pressure relief assembly (12) comprises a connecting pipe (121), a drainage groove (122) and a pressure relief pipe (123); the connecting pipe (121) is clamped on the surface of the mounting pipe (113); the drainage groove (122) is arranged on the inner side of the connecting pipe (121); the pressure relief pipe (123) is connected to the front side of the connecting pipe (121); and the rear side of the pressure relief pipe (123) is close to the front side of the drainage groove (122).

4. The pressure transmitter with overpressure protection function according to claim 3 is characterized in that: The connection assembly (13) comprises a connection plate (131), a magnetic connection rod (132) and a magnetic connection tube (133); the connection plate (131) is fixedly connected to the left side of the positioning base plate (112); the magnetic connection rod (132) is fixedly connected to the bottom of the connection plate (131); the magnetic connection tube (133) is fixedly connected to the left side of the connection tube (121); and the surface of the magnetic connection rod (132) is clamped with the inner side of the magnetic connection tube (133).

5. The pressure transmitter with overpressure protection function according to claim 3, characterized in that: The buffer assembly (14) comprises a buffer plate (141), a compensator (142) and a bursting membrane (143); the buffer plate (141) is fixedly connected to the front side of the connecting pipe (121); the compensator (142) is fixedly connected to the inner side of the buffer plate (141); the bursting membrane (143) is fixedly connected to the bottom of the compensator (142); and the rear side of the compensator (142) is connected to the front side of the pressure relief pipe (123).

6. The pressure transmitter with overpressure protection function according to claim 5, characterized in that: The discharge assembly (15) comprises a pressure relief valve (151), a pressure guiding pipe (152) and a protective cover plate (153); the pressure relief valve (151) is connected to the top of the compensator (142); the pressure guiding pipe (152) is connected to the top of the pressure relief valve (151); and the protective cover plate (153) is clamped on the output end on the front side of the pressure guiding pipe (152).

7. The pressure transmitter with overpressure protection function according to claim 2, characterized in that: The positioning assembly (21) comprises a positioning base (211), a wire tie rod (212) and a magnetic attraction plate (213); the positioning base (211) is fixedly connected to the rear side of the pressure transmitter body (111); three wire tie rods (212) are respectively fixedly connected to the left side of the inner bottom of the positioning base (211), the right side of the inner bottom and the rear side of the inner bottom; and the magnetic attraction plate (213) is fixedly connected to the top of the wire tie rod (212).

8. The pressure transmitter with overpressure protection function according to claim 7, characterized in that: The clamping assembly (22) comprises a connecting magnetic sheet (221), a clamping rod (222) and a return spring (223); the connecting magnetic sheet (221) is arranged on the top of the magnetic attraction plate (213); the clamping rod (222) is fixedly connected to the top of the connecting magnetic sheet (221); and the return spring (223) is clamped to the top of the inner side of the clamping rod (222).

9. The pressure transmitter with overpressure protection function according to claim 8, characterized in that: The locking assembly (23) comprises a positioning ring (231), a guide hole plate (232), a positioning plate (233), an insertion hole (234) and a positioning groove (235); the positioning ring (231) is fixedly connected to the top of the positioning base (211); the guide hole plate (232) is rotatably connected to the inner side of the positioning ring (231); the inner side of the guide hole plate (232) contacts the surface of the clamping rod (222); the positioning plate (233) is clamped to the top of the inner side of the positioning base (211); three insertion holes (234) are respectively arranged on the left side, the right side and the rear side of the top of the positioning plate (233); the positioning groove (235) is arranged on one side of the top of the positioning plate (233) close to the insertion hole (234); and the positioning groove (235) is connected to the insertion hole (234).

10. The pressure transmitter with overpressure protection function according to claim 8, characterized in that: The module assembly (24) comprises a detection module (241), a signal module (242) and a power connection module (243); the detection module (241) is fixedly connected to the rear side of the top of the clamping rod (222); the signal module (242) is fixedly connected to the right side of the top of the clamping rod (222); and the power connection module (243) is fixedly connected to the left side of the top of the clamping rod (222).

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