CN215178310U

CN215178310U - Flat membrane pressure transmitter

Info

Publication number: CN215178310U
Application number: CN202121374880.0U
Authority: CN
Inventors: 李从权
Original assignee: Leierda Instrument Jiangsu Co ltd
Current assignee: Leierda Instrument Jiangsu Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-12-14
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a flat membrane pressure transmitter, which comprises an installation shell and a first buffer component; installing a shell: the upper end surface is provided with a PLC controller, and the lower end inside the mounting shell is fixed with a diaphragm; a first buffer assembly: contain connecting plate, slide bar, supporting disk and first spring, the inside of installation shell is fixed with the connecting plate, the connecting hole has been seted up on the last side of connecting plate, the inside sliding connection of connecting hole has the slide bar, be fixed with the supporting disk on the lower terminal surface of slide bar, first spring has been cup jointed on the periphery of slide bar, the upper end of first spring is fixed on the downside of connecting plate, the lower extreme of first spring is fixed on the up end of supporting disk, install second buffering subassembly on the up end of slide bar, have the shock-absorbing capacity, can prolong the life of diaphragm to can protect the diaphragm when the diaphragm suffers long-time extrusion.

Description

Flat membrane pressure transmitter

Technical Field

The utility model relates to a flat membrane pressure transmitter technical field specifically is a flat membrane pressure transmitter.

Background

The pressure transmitter is a sensor which can convert physical pressure parameters of gas, liquid and the like sensed by a side pressure element sensor into standard electric signals to supply secondary instruments such as an indicating alarm instrument, a recorder, a regulator and the like for measurement, indication and process regulation, is widely applied to various industrial automatic control environments and relates to various industries such as water conservancy and hydropower, railway transportation, intelligent building, production automatic control, aerospace, war industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like, the existing pressure transmitter does not have a buffer structure, the diaphragm can be damaged after long-term use, and the diaphragm of the pressure transmitter can continuously extrude high-pressure media, the long-time deformation easily causes permanent deformation, so that the detection accuracy of the diaphragm is reduced, and therefore, a flat-diaphragm pressure transmitter is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a flat membrane pressure transmitter, have the shock-absorbing capacity, can prolong the life of diaphragm to can protect the diaphragm when the diaphragm suffers from long-time extrusion, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a flat diaphragm pressure transmitter includes a mounting housing and a first buffer assembly;

installing a shell: the upper end surface is provided with a PLC controller, and the lower end inside the mounting shell is fixed with a diaphragm;

a first buffer assembly: contain connecting plate, slide bar, supporting disk and first spring, the inside of installation shell is fixed with the connecting plate, the connecting hole has been seted up on the last side of connecting plate, the inside sliding connection of connecting hole has the slide bar, be fixed with the supporting disk on the lower terminal surface of slide bar, first spring has been cup jointed on the periphery of slide bar, the upper end of first spring is fixed on the downside of connecting plate, the lower extreme of first spring is fixed on the up end of supporting disk, install the second on the up end of slide bar and cushion the subassembly, carry out preliminary buffering to the diaphragm through setting up first buffering subassembly;

wherein: and the input end of the PLC is electrically connected with the output end of an external power supply.

Furthermore, the second buffer component comprises a fixed plate, a connecting rod, a limiting disc, a U-shaped frame, a second spring and a T-shaped column, a fixed plate is fixed on the upper end surface of the slide bar, two corresponding grooves are arranged on the left side and the right side of the fixed plate, a connecting rod is rotatably connected inside the groove, a limiting disc is fixed on the end surface of the connecting rod far away from the groove, two U-shaped frames are arranged, a sliding hole is arranged on the side surface of each U-shaped frame, the U-shaped frames are sleeved on the circumferential surface of the connecting rod, a second spring is sleeved on the circumferential surface of the connecting rod, one end of the second spring is fixed on the side surface of the U-shaped frame, the other end of the second spring is fixed on the end surface of the limiting disc, the U-shaped frame is rotatably connected with a T-shaped column, the T-shaped column is fixed in the mounting shell, and the diaphragm is further buffered by arranging a second buffer component.

Further, be fixed with the protective cover on the lower terminal surface of installation shell, set up evenly distributed's feed port on the lower terminal surface of protective cover, protect the diaphragm through setting up the protective cover.

Further, install two corresponding electric telescopic handle on the inside up end of installation shell, be fixed with the support ring on two electric telescopic handle's the flexible arm, the supporting disk is located the inside of support ring, the output of PLC controller is connected to electric telescopic handle's input electricity, supports the diaphragm through setting up electric telescopic handle and support ring.

Further, be fixed with the mount pad on the up end of installation shell, install the display on the leading flank of mount pad, the output of PLC controller is connected to the input electricity of display, shows pressure numerical value through setting up the display.

Further, the sensor core is installed to the inside upper end of installation shell, set up two corresponding slide openings on the up end of support ring, the inside sliding connection of slide opening has silica gel column, the upper end of silica gel column is fixed on the downside of sensor core, the sensor core is connected with the two-way electricity of PLC controller.

Compared with the prior art, the beneficial effects of the utility model are that: this flat membrane pressure transmitter has following benefit:

1. the diaphragm can deform under the action of a high-pressure medium in the normal use process by arranging the first buffer assembly and the second buffer assembly, the diaphragm deforms to drive the slide rod to move upwards, the slide rod moves upwards to enable the first spring to contract, the diaphragm is subjected to preliminary buffer after the first spring contracts, the slide rod continues to pull the ends, connected with the fixed plate, of the two connecting rods upwards to move upwards, the ends, connected with the fixed plate, of the two connecting rods upwards move to enable the two second springs to contract, the diaphragm is further buffered after the diaphragm contracts, and therefore the service life of the diaphragm is prolonged;

2. when the diaphragm continuously receives the extrusion of high pressure medium, thereby the diaphragm will produce deformation compression silica gel column and then conduct to the sensor core, can send this signal to the PLC controller after the sensor core receives the signal, can automatic control electric telescopic handle work drive support ring support the diaphragm downwards after the PLC controller receives the signal to avoid the diaphragm damage to appear.

Drawings

FIG. 1 is a schematic front side view of the present invention;

fig. 2 is a front side sectional view of the present invention;

FIG. 3 is a schematic diagram of the structure of the silica gel column of the present invention;

FIG. 4 is a schematic structural view of a first cushion assembly of the present invention;

fig. 5 is a schematic view of the protective cover of the present invention.

In the figure: the sensor comprises a mounting shell 1, a PLC 2, a diaphragm 3, a first buffer component 4, a connecting plate 41, a sliding rod 42, a supporting plate 43, a first spring 44, a second buffer component 5, a fixing plate 51, a connecting rod 52, a limiting plate 53, a U-shaped frame 54, a second spring 55, a T-shaped column 56, a silica gel column 6, an electric telescopic rod 7, a supporting ring 8, a mounting seat 9, a display 10, a protective cover 11 and a sensor core 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present embodiment provides a technical solution: a flat-diaphragm pressure transmitter comprises a mounting shell 1 and a first buffer component 4;

mounting the shell 1: the upper end surface is provided with a PLC (programmable logic controller) 2, and the lower end inside the mounting shell 1 is fixed with a diaphragm 3;

first buffer assembly 4: comprises a connecting plate 41, a sliding rod 42, a supporting plate 43 and a first spring 44, the connecting plate 41 is fixed in the mounting shell 1, a connecting hole is arranged on the upper side surface of the connecting plate 41, the sliding rod 42 is connected in the connecting hole in a sliding manner, the supporting plate 43 is fixed on the lower end surface of the sliding rod 42, the first spring 44 is sleeved on the circumferential surface of the sliding rod 42, the upper end of the first spring 44 is fixed on the lower side surface of the connecting plate 41, the lower end of the first spring 44 is fixed on the upper end surface of the supporting plate 43, a second buffer component 5 is installed on the upper end surface of the sliding rod 42, the second buffer component 5 comprises a fixing plate 51, a connecting rod 52, a limiting plate 53, a U-shaped frame 54, a second spring 55 and a T-shaped column 56, the fixing plate 51 is fixed on the upper end surface of the sliding rod 42, two corresponding grooves are arranged on the left side and the right side of the fixing plate 51, the connecting rod 52 is rotatably connected in the grooves, the connecting rod 52 is fixed on the end surface of the connecting rod 52 far away from the grooves 53, the number of the U-shaped frames 54 is two, sliding holes are formed in the side face of each U-shaped frame 54, each U-shaped frame 54 is sleeved on the circumferential face of the corresponding connecting rod 52, a second spring 55 is sleeved on the circumferential face of the corresponding connecting rod 52, one end of each second spring 55 is fixed to the side face of the corresponding U-shaped frame 54, the other end of each second spring 55 is fixed to the end face of the corresponding limiting disc 53, a T-shaped column 56 is rotatably connected to the inside of each U-shaped frame 54, the T-shaped columns 56 are fixed to the inside of the corresponding mounting shell 1, the diaphragm 3 is further buffered through the arrangement of the second buffer assemblies 5, and the diaphragm 3 is primarily buffered through the arrangement of the first buffer assemblies 4;

wherein: the input end of the PLC 2 is electrically connected with the output end of an external power supply.

Wherein: be fixed with protective cover 11 on the lower terminal surface of installation shell 1, offer evenly distributed's feed port on protective cover 11's the lower terminal surface, protect diaphragm 3 through setting up protective cover 11.

Wherein: install two corresponding electric telescopic handle 7 on the inside up end of installation shell 1, be fixed with support ring 8 on two electric telescopic handle 7's the flexible arm, supporting disk 43 is located support ring 8's inside, and PLC controller 2's output is connected to electric telescopic handle 7's input electricity, supports diaphragm 3 through setting up electric telescopic handle 7 and support ring 8.

Wherein: be fixed with mount pad 9 on the up end of installation shell 1, install display 10 on the leading flank of mount pad 9, the output of PLC controller 2 is connected to the input electricity of display 10, comes the demonstration pressure numerical value through setting up display 10.

Wherein: the sensor core body 12 is installed at the upper end of the inner part of the installation shell 1, two corresponding sliding holes are formed in the upper end face of the support ring 8, the inner part of each sliding hole is connected with a silica gel column 6 in a sliding mode, the upper end of each silica gel column 6 is fixed on the lower side face of the sensor core body 12, and the sensor core body 12 is electrically connected with the PLC 2 in a two-way mode.

The utility model provides a pair of flat membrane pressure transmitter's theory of operation as follows: in the normal use process, the diaphragm 3 can generate deformation under the action of a high-pressure medium, the diaphragm 3 deforms to drive the slide rod 42 to move upwards, the slide rod 42 moves upwards to enable the first spring 44 to contract, the diaphragm 3 is primarily buffered after the first spring 44 contracts, the slide rod 42 continues to pull the ends, connected with the fixed plate 51, of the two connecting rods 52 upwards, the ends, connected with the fixed plate 51, of the two connecting rods 52 upwards move to enable the two second springs 55 to contract, the diaphragm 3 is further buffered after the contraction, the service life of the diaphragm is prolonged, when the diaphragm is continuously extruded by the high-pressure medium, the diaphragm 3 deforms to compress the silica gel column 6 and further transmit the silica gel column to the sensor core 12, the sensor core 12 sends a signal to the PLC 2 after receiving the signal, the PLC 2 automatically controls the electric telescopic rod 7 to work to drive the support ring 8 to support the diaphragm 3 downwards after receiving the signal, thereby avoiding damage to the membrane 3.

It should be noted that, the specific model of the PLC controller 2 disclosed in the above embodiments is siemens S7-200, the electric telescopic rod 7 and the sensor core 12 can be freely configured according to the actual application scenario, and the PLC controller 2 controls the electric telescopic rod 7 to work by a method commonly used in the prior art.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A flat membrane pressure transmitter, characterized in that: comprises a mounting shell (1) and a first buffer component (4);

mounting case (1): the upper end face is provided with a PLC (programmable logic controller) 2, and the lower end inside the mounting shell (1) is fixed with a diaphragm (3);

first damping assembly (4): the installation shell comprises a connecting plate (41), a sliding rod (42), a supporting plate (43) and a first spring (44), wherein the connecting plate (41) is fixed inside the installation shell (1), a connecting hole is formed in the upper side face of the connecting plate (41), the sliding rod (42) is connected inside the connecting hole in a sliding mode, the supporting plate (43) is fixed on the lower end face of the sliding rod (42), the first spring (44) is sleeved on the circumferential face of the sliding rod (42), the upper end of the first spring (44) is fixed on the lower side face of the connecting plate (41), the lower end of the first spring (44) is fixed on the upper end face of the supporting plate (43), and a second buffer component (5) is installed on the upper end face of the sliding rod (42);

wherein: the input end of the PLC (2) is electrically connected with the output end of an external power supply.

2. The flat diaphragm pressure transmitter of claim 1 wherein: the second buffer assembly (5) comprises a fixed plate (51), a connecting rod (52), two limiting discs (53), a U-shaped frame (54), two second springs (55) and a T-shaped column (56), the fixed plate (51) is fixed on the upper end face of the sliding rod (42), two corresponding grooves are formed in the left side and the right side of the fixed plate (51), the connecting rod (52) is rotatably connected in the grooves, the limiting discs (53) are fixed on the end face, far away from the grooves, of the connecting rod (52), the U-shaped frame (54) is provided with two limiting discs, sliding holes are formed in the side face of the U-shaped frame (54), the U-shaped frame (54) is sleeved on the circumferential face of the connecting rod (52), the second springs (55) are sleeved on the circumferential face of the connecting rod (52), one ends of the second springs (55) are fixed on the side face of the U-shaped frame (54), and the other ends of the second springs (55) are fixed on the end face of the limiting discs (53), the inside of U-shaped frame (54) rotates and is connected with T shape post (56), T shape post (56) are fixed in the inside of installation shell (1).

3. The flat diaphragm pressure transmitter of claim 1 wherein: the mounting shell is characterized in that a protective cover (11) is fixed on the lower end face of the mounting shell (1), and evenly distributed feeding holes are formed in the lower end face of the protective cover (11).

4. The flat diaphragm pressure transmitter of claim 1 wherein: install two corresponding electric telescopic handle (7) on the inside up end of installation shell (1), be fixed with support ring (8) on the flexible arm of two electric telescopic handle (7), supporting disk (43) are located the inside of support ring (8), the output of PLC controller (2) is connected to electric telescopic handle's (7) input electricity.

5. The flat diaphragm pressure transmitter of claim 1 wherein: the mounting structure is characterized in that a mounting seat (9) is fixed on the upper end face of the mounting shell (1), a display (10) is mounted on the front side face of the mounting seat (9), and the input end of the display (10) is electrically connected with the output end of the PLC (2).

6. The flat diaphragm pressure transmitter of claim 4 wherein: sensor core (12) are installed to the inside upper end of installation shell (1), two corresponding slide openings have been seted up on the up end of support ring (8), the inside sliding connection of slide opening has silica gel column (6), the upper end of silica gel column (6) is fixed on the downside of sensor core (12), sensor core (12) and PLC controller (2) two-way electricity are connected.