CN213091062U

CN213091062U - Small pressure transmitter

Info

Publication number: CN213091062U
Application number: CN202022332862.8U
Authority: CN
Inventors: 陈武辉
Original assignee: Guangdong Senjue Optical Technology Co ltd
Current assignee: Guangdong Senjue Optical Technology Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-04-30
Anticipated expiration: 2030-10-19

Abstract

The utility model particularly provides a small-sized pressure transmitter, which comprises a buffer mechanism, a transmitter main body arranged on the buffer mechanism and a display mechanism arranged on the transmitter main body, wherein the transmitter main body is positioned between the buffer mechanism and the display mechanism; the buffer mechanism comprises a connecting component and a buffer component arranged on the connecting component, and the transmitter main body is arranged on the connecting component; the buffer assembly is provided with a buffer tube arranged in the connecting assembly, an inflow tube arranged in the buffer tube and a buffer piece arranged in the buffer tube, and the buffer piece is arranged in the buffer tube in a sliding way; buffer gear who sets up can carry out buffering to a certain extent to being measured pressure gas or liquid, avoids the too big harm that leads to the pressure cell of pressure, and buffer gear can avoid being measured pressure gas or liquid directly to contact with the changer main part simultaneously, effectually protects the changer main part, improves the life of changer main part.

Description

Small pressure transmitter

Technical Field

The utility model relates to a pressure transmitter technical field especially relates to a small-size pressure transmitter.

Background

A pressure transmitter is a device that converts pressure into a pneumatic signal or an electric signal for control and remote transmission. The pressure sensor can convert physical pressure parameters of gas, liquid and the like sensed by the pressure element sensor into standard electric signals (such as 4-20 mADC and the like) so as to supply secondary instruments such as an indication alarm instrument, a recorder, a regulator and the like for measurement, indication and process regulation. However, when some corrosive liquid or gas is used for pressure conversion, the liquid or gas directly contacts with the pressure transmitter, so that the pressure transmitter is damaged to a certain extent, and the service life of the pressure transmitter is shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a avoid the pressure measurement gas or liquid directly to contact with the changer main part through setting up buffer gear, effectively protect the small-size pressure transmitter of changer main part.

The utility model adopts the technical proposal that: a small-sized pressure transmitter comprises a buffer mechanism, a transmitter main body and a display mechanism, wherein the transmitter main body is arranged on the buffer mechanism, and the display mechanism is arranged on the transmitter main body; the buffer mechanism comprises a connecting component and a buffer component arranged on the connecting component, and the transmitter main body is arranged on the connecting component; the buffer assembly is provided with a buffer tube arranged in the connecting assembly, an inflow tube arranged in the buffer tube and a buffer piece arranged in the buffer tube, and the buffer piece is arranged in the buffer tube in a sliding way.

The technical scheme is further improved in that a guide groove is formed in the buffer tube, the buffer piece is provided with a guide post, and the guide post is located in the guide groove.

The further improvement of the technical scheme is that the buffer tube is provided with a limit ring groove, the inflow tube is provided with a limit ring column, and the limit ring column is arranged in the limit ring groove.

The further improvement to the above technical scheme is that the connecting assembly comprises an installation shell and a transition piece installed in the installation shell, and the transition piece is slidably installed in the installation shell.

The technical scheme is further improved in that lubricating oil is arranged between the buffer piece and the inner wall of the buffer tube, and lubricating oil is arranged between the transition piece and the inner wall of the installation shell.

The technical scheme is further improved in that the inflow pipe, the buffer pipe and the mounting shell are all made of polytetrafluoroethylene materials.

The technical scheme is further improved in that the transmitter main body is provided with a pressure detection end and a signal transmission end, the pressure detection end is connected with the buffer mechanism, and the signal transmission end is connected with the display mechanism.

The technical scheme is further improved in that the display mechanism comprises a control box arranged on the transmitter main body, a display screen arranged on the control box, a protection component arranged on the control box and a wiring port arranged on the control box; the protection component is arranged corresponding to the display screen.

The technical scheme is further improved in that the protection assembly comprises a fixing column installed on the control box, a torque spring installed on the fixing column and a cover plate installed on the torque spring, and the cover plate is arranged corresponding to the display screen.

The technical scheme is further improved in that the inflow pipe is arranged on the buffer pipe in a welding mode.

The utility model has the advantages as follows: buffer gear through setting up can carry out the buffering to a certain extent to being measured pressure gas or liquid, avoids the too big harm that leads to the pressure cell of pressure, and buffer gear can avoid being measured pressure gas or liquid directly to contact with the changer main part simultaneously, effectually protects the changer main part, improves the life of changer main part.

Drawings

FIG. 1 is a schematic view of the overall structure of the small pressure transmitter of the present invention;

FIG. 2 is a schematic diagram of the coupling assembly of the compact pressure transmitter of FIG. 1;

FIG. 3 is a schematic diagram of a buffer assembly of the compact pressure transmitter of FIG. 1;

FIG. 4 is a schematic diagram of the construction of a buffer tube in the compact pressure transmitter of FIG. 3;

FIG. 5 is a schematic diagram of an exploded view of the compact pressure transmitter of FIG. 1;

fig. 6 is an enlarged schematic view of fig. 5 at circle a.

Description of reference numerals: 10-a buffer mechanism, 20-a connecting component, 21-a mounting shell, 22-a transition piece, 30-a buffer component, 31-a buffer tube, 31 a-a guide groove, 32 a-a limiting ring groove, 32-an inflow tube, 32 a-a limiting ring column, 33-a buffer piece, 33 a-a guide column, 40-a transmitter main body, 41-a pressure detection end, 42-a signal transmission end, 50-a display mechanism, 51-a control box, 52-a display screen, 53-a wiring port, 60-a protection component, 61-a fixed column, 62-a torque spring and 63-a cover plate.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully below. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

As shown in fig. 1 to 6, the present invention provides a small pressure transmitter, which includes a buffer mechanism 10, a transmitter main body 40 installed on the buffer mechanism 10, and a display mechanism 50 installed on the transmitter main body 40, wherein the transmitter main body 40 is located between the buffer mechanism 10 and the display mechanism 50, and the transmitter main body 40 is installed on the connecting assembly 20; the buffer mechanism 10 comprises a connecting component 20 and a buffer component 30 arranged on the connecting component 20, and the display mechanism is provided with a protective component 60; buffer gear 10 through setting up can carry out buffering to a certain extent to being measured pressure gas or liquid, avoids the too big harm that leads to the pressure cell of pressure, and buffer gear 10 can avoid being measured pressure gas or liquid directly to contact with changer main part 40 simultaneously, effectually protects the changer main part, improves the life of changer main part.

As shown in fig. 2, the connection assembly 20 includes a mounting shell 21 and a transition piece 22 mounted in the mounting shell 21, the transition piece 22 is slidably mounted in the mounting shell 21, and the arrangement of the connection assembly 20 can further improve the protection effect.

As shown in fig. 3 and 4, buffer module 30 has buffer tube 31 attached to connection module 20, inflow tube 32 attached to buffer tube 31, and buffer material 33 attached inside buffer tube 31, buffer material 33 being slidably attached inside buffer tube 31; a guide groove 31a is arranged in the buffer tube 31, the buffer piece 33 is provided with a guide post 33a, and the guide post 33a is positioned in the guide groove 31 a; the buffer tube 31 is provided with a limit ring groove 31b, the inflow tube 32 is provided with a limit ring column 32a, and the limit ring column 32a is arranged in the limit ring groove 31 b; lubricating oil is arranged between the buffer piece 33 and the inner wall of the buffer tube 31, and lubricating oil is arranged between the transition piece 22 and the inner wall of the mounting shell 21; the inflow pipe 32, the buffer pipe 31 and the mounting shell 21 are all made of polytetrafluoroethylene materials; the inflow pipe 32 is attached to the buffer pipe 31 by welding; the buffer assembly 30 can buffer the measured pressure liquid and gas to a certain extent, so that damage to the pressure detection element caused by overlarge pressure is avoided, meanwhile, the buffer mechanism 10 can prevent the measured pressure gas or liquid from directly contacting with the transmitter main body 40, the transmitter main body is effectively protected, and the service life of the transmitter main body is prolonged; because the inflow pipe 32, the buffer pipe 31 and the mounting shell 21 are all made of teflon materials, the buffer assembly 30 has certain corrosion resistance, the service life of the buffer assembly is prolonged, the inflow pipe 32 is mounted on the buffer pipe 31 in a welding mode to avoid leakage of liquid or gas, in the embodiment, the joint of the buffer pipe 31 and the mounting shell 21 is packaged by corrosion-resistant soft glue, and the sealing performance of the buffer mechanism 30 is improved.

As shown in fig. 5, the transmitter main body 40 has a pressure detecting end 41 and a signal transmission end 42, the pressure detecting end 41 is connected to the buffer mechanism 10, and the signal transmission end 42 is connected to the display mechanism 50, in this embodiment, the pressure detecting end 41 is installed on the installation shell 21, and the joint between the pressure detecting end 41 and the installation shell 21 is encapsulated by corrosion-resistant soft rubber, so as to improve the sealing performance.

As shown in fig. 1 and 6, display mechanism 50 includes a control box 51 mounted to transmitter body 40, a display screen 52 mounted to control box 51, a shield assembly 60 mounted to control box 51, and a connection port 53 mounted to control box 51; protection component 60 corresponds the setting with display screen 52, and display screen 52 can demonstrate the pressure value, is convenient for look over, and protection component can protect the display screen to receive the harm, and wiring port 53 is used for connecting the power and carries out power transmission.

The protection assembly 60 comprises a fixed column 61 mounted on the control box 51, a torque spring 62 mounted on the fixed column 61, and a cover plate 63 mounted on the torque spring 62, wherein the cover plate 63 is arranged corresponding to the display screen 52; the protective assembly 60 can effectively protect the display screen 52, when the display screen is viewed, the pressure value displayed on the display screen can be viewed only by lifting the cover plate 63, the cover plate 63 is released after the viewing is finished, and the cover plate 63 is reset under the action of the torque spring 62 to protect the display screen.

The utility model discloses a theory of operation does: when the pressure transmitter works, the pressure-measured liquid or gas enters the buffer tube 31 through the inflow tube 32, the buffer piece 33 is stressed to displace, the transition piece 22 is contacted with the buffer piece, the buffer piece 33 drives the transition piece 22 to displace, the transition piece 22 is propped against the pressure detection end 41 of the transmitter main body 40 after being displaced, then pressure detection is carried out, the detected information is transmitted to the control box 51 through the signal transmission end 42 and then displayed on the display screen 52, and a worker can check the pressure information from the display screen 52.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A small-sized pressure transmitter is characterized by comprising a buffer mechanism, a transmitter main body arranged on the buffer mechanism and a display mechanism arranged on the transmitter main body, wherein the transmitter main body is positioned between the buffer mechanism and the display mechanism; the buffer mechanism comprises a connecting component and a buffer component arranged on the connecting component, and the transmitter main body is arranged on the connecting component; the buffer assembly is provided with a buffer tube arranged in the connecting assembly, an inflow tube arranged in the buffer tube and a buffer piece arranged in the buffer tube, and the buffer piece is arranged in the buffer tube in a sliding way.

2. The compact pressure transmitter of claim 1 wherein the buffer tube has a guide slot therein, the buffer having a guide post therein, the guide post being located in the guide slot.

3. The compact pressure transmitter of claim 1 wherein the buffer tube is provided with a retaining ring groove and the inlet tube has a retaining ring post mounted in the retaining ring groove.

4. The compact pressure transmitter of claim 1 wherein the coupling assembly includes a mounting housing, a transition piece mounted within the mounting housing, the transition piece being slidably mounted within the mounting housing.

5. The compact pressure transmitter of claim 4 wherein the buffer member has a lubricant between the buffer member and an inner wall of the buffer tube and the transition member has a lubricant between the transition member and an inner wall of the mounting housing.

6. The compact pressure transmitter of claim 5 wherein the inlet tube, buffer tube, and mounting housing are fabricated from a polytetrafluoroethylene material.

7. The miniaturized pressure transmitter of claim 1 wherein the transmitter body has a pressure sensing terminal and a signal transmitting terminal, the pressure sensing terminal being coupled to the buffer mechanism and the signal transmitting terminal being coupled to the display mechanism.

8. The compact pressure transmitter of claim 1, wherein the display mechanism includes a control box mounted to the transmitter body, a display screen mounted to the control box, a protective assembly mounted to the control box, and a wiring port mounted to the control box; the protection component is arranged corresponding to the display screen.

9. The compact pressure transmitter of claim 8, wherein the shielding assembly comprises a fixing post mounted on the control box, a torsion spring mounted on the fixing post, and a cover plate mounted on the torsion spring, and the cover plate is disposed corresponding to the display screen.

10. The miniaturized pressure transmitter of claim 1 wherein the inlet tube is attached to the buffer tube by welding.