CN219391204U

CN219391204U - Differential pressure transmitter based on fluid industry

Info

Publication number: CN219391204U
Application number: CN202320810522.2U
Authority: CN
Inventors: 李明; 李哲; 魏慧琳; 司书一; 刘�文
Original assignee: Shandong Friend Control System Co ltd
Current assignee: Shandong Friend Control System Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-21
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses a differential pressure transmitter based on fluid industry, and belongs to the technical field of industrial sensor measurement. The structure is as follows: set up the end cover respectively around the casing to utilize the sealing washer to seal, set gradually sightseeing lens, pressure pad and circuit board in the front end housing inboard, the pad has set up O type circle between sightseeing lens and front end housing, has built-in heart electric capacity and binding post in the casing, heart electric capacity and binding post and circuit board electric connection have the body on the casing top the one end of body is provided with cable introducing device the other end of body is provided with the screw plug, is provided with the sensor at the lower extreme of casing, has splint in the front and back both sides of sensor, and two splint pass through bolt and nut fastening connection, pad has set up the third sealing washer between splint and sensor. The utility model is based on a fluid industrial differential pressure transmitter, can achieve the effects of water resistance, dust resistance and explosion resistance, has attractive appearance, is convenient to observe, and can display on site and remotely transmit signals.

Description

Differential pressure transmitter based on fluid industry

Technical Field

The utility model relates to the technical field of industrial sensor measurement, in particular to a differential pressure transmitter based on fluid industry.

Background

Transmitters have evolved from sensors that detect process parameters and transmit measured values in specific signal forms for display and adjustment. The transmitter is arranged in an automatic detection and adjustment system, converts physical quantities such as temperature, pressure, flow, liquid level, components and the like into unified standard signals, and transmits the unified standard signals to the regulator and the indication recorder for adjustment, indication and recording.

The differential pressure transmitter is a typical self-balancing detection instrument, and overcomes the influence of adverse factors such as element materials, processing technology and the like by utilizing the working principle of negative feedback. The differential pressure transmitter is used to measure the liquid level, density and pressure of liquid, gas and steam, and then converts it into a current signal output of 4-20mA DC. In the prior art, the differential pressure transmitter generally can meet the process requirements in terms of detection precision, but has poor self sealing performance, and is difficult to achieve the effects of water resistance, dust resistance, explosion resistance and the like.

Disclosure of Invention

The utility model aims at solving the technical defects of the prior art, and provides a differential pressure transmitter based on fluid industry so as to solve the technical problem that the sealing performance of a common differential pressure transmitter is to be improved.

Another technical problem to be solved by the present utility model is how to further improve the appearance and function of differential pressure transmitters.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

the utility model provides a differential pressure transmitter based on fluid industry, which comprises a housin, the rear end cap, a first sealing washer, the front end housing, the second sealing washer, the sightglass, the pressure pad, the circuit board, the O type circle, the feedthrough capacitor, binding post, the cable introducing device, the screw plug, the sensor, the splint, the bolt, the nut, the third sealing washer, wherein, be provided with the rear end cap at the rear end of casing, first sealing washer has been placed to the pad between rear end cap and casing, be provided with the front end cap at the front end of casing, the second sealing washer has been placed to the pad between front end cap and casing, the inboard of front end cap has set gradually sightglass, pressure pad and circuit board, the O type circle has been placed to the pad between sightglass and front end cap, the built-in feedthrough capacitor and binding post in the casing, feedthrough capacitor and binding post have the body in the top of casing the cable introducing device is provided with the screw plug at the one end of body the other end of body, be provided with the sensor at the lower extreme of casing, both sides have splint after the sensor, two pass through the bolt and the nut is connected between the sensor pad and the third sealing washer.

Preferably, the side end of the shell is fixedly connected with a first nameplate, and the top end of the tube body is fixedly connected with a second nameplate.

Preferably, the side end of the shell and the first nameplate are provided with mutually matched mounting holes; the top end of the pipe body and the second nameplate are provided with mutually-involuted mounting holes.

Preferably, the housing is an integrally cast aluminum housing.

Preferably, the viewing mirror is made of toughened glass.

Preferably, the connection terminal is a square terminal.

The utility model discloses a differential pressure transmitter based on fluid industry. As a novel differential pressure transmitter form, the utility model utilizes a novel shell, adopts an integrated cast aluminum shell, a toughened glass observation window, is fixed by screw threads, is sealed by a rubber ring, and has a protection grade of IP66; the anti-explosion performance is achieved; two nameplate mounting positions are provided, so that the information of the transmitter can be visually observed; the device is provided with a position number plate mounting hole; the assembly thread is M27 x 2, and is compatible with most sensors; the terminal adopts square terminal convenient on-the-spot wiring. The utility model is based on a fluid industrial differential pressure transmitter, can achieve the effects of water resistance, dust resistance and explosion resistance, has attractive appearance, is convenient to observe, and can display on site and remotely transmit signals.

Drawings

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is a perspective assembly view of the present utility model;

FIG. 3 is an assembly view of the present utility model from a side perspective;

FIG. 4 is an assembled view of the present utility model from a forward viewing angle;

in the figure:

1. casing 2, rear end cover 3, first sealing washer 4, front end cover

5. Second sealing ring 6, sightseeing lens 7, pressing pad 8 and circuit board

9. O-ring 10, feedthrough capacitor 11, terminal 12, and cable lead-in device

13. Screw plug 14, sensor 15, clamping plate 16 and bolt

17. Nut 18, third sealing ring 19, first nameplate 20, second nameplate

Detailed Description

Hereinafter, embodiments of the present utility model will be described in detail. In order to avoid unnecessary detail, well-known structures or functions will not be described in detail in the following embodiments. Approximating language, as used in the following examples, may be applied to create a quantitative representation that could permissibly vary without resulting in a change in the basic function. Unless defined otherwise, technical and scientific terms used in the following examples have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

Example 1

Based on a fluid industry differential pressure transmitter, as shown in fig. 1-4, the fluid industry differential pressure transmitter comprises a shell 1, a rear end cover 2, a first sealing ring 3, a front end cover 4, a second sealing ring 5, a sight glass 6, a pressing pad 7, a circuit board 8,O type ring 9, a feedthrough capacitor 10, a wiring terminal 11, a cable lead-in device 12, a threaded plug 13, a sensor 14, a clamping plate 15, a bolt 16, a nut 17 and a third sealing ring 18, wherein the rear end of the shell 1 is provided with the rear end cover 2, the first sealing ring 3 is arranged between the rear end cover 2 and the shell 1 in a cushioning manner, the front end cover 4 is arranged at the front end of the shell 1, the second sealing ring 5 is arranged between the front end cover 4 and the shell 1 in a cushioning manner, the inside of the front end cover 4 is sequentially provided with the sight glass 6, the pressing pad 7 and the circuit board 8, the O-shaped ring 9 is arranged between the sight glass 6 and the front end cover 4, the feedthrough capacitor 10 and the wiring terminal 11 are arranged in the shell 1, the feedthrough capacitor 10 and the wiring terminal 11 are electrically connected with the circuit board 8, a pipe body is arranged at the top end of the shell 1, the pipe body is arranged at one end of the shell 14, the pipe body is arranged at the end of the shell 14, the sensor is connected with the clamping plate 14 and the clamping plate 15 through the clamping plate 15, the sensor 14 is arranged at the two ends of the sensor 14, the sensor 15 is arranged at the two ends, the two ends of the sensor 14 are arranged at the two ends, and the end of the sensor 15 are arranged at the end of the sensor body 14.

Example 2

The differential pressure transmitter based on the fluid industry, as shown in fig. 1-4, comprises a shell 1, a rear end cover 2, a first sealing ring 3, a front end cover 4, a second sealing ring 5, a sightseeing lens 6, a pressing pad 7, a circuit board 8,O type ring 9, a feedthrough capacitor 10, a wiring terminal 11, a cable lead-in device 12, a thread plug 13, a sensor 14, a clamping plate 15, a bolt 16, a nut 17 and a third sealing ring 18, wherein the rear end of the shell 1 is provided with the rear end cover 2, the first sealing ring 3 is arranged between the rear end cover 2 and the shell 1 in a cushioning manner, the front end of the shell 1 is provided with the front end cover 4, the second sealing ring 5 is arranged between the front end cover 4 and the shell 1 in a cushioning manner, the inside of the front end cover 4 is sequentially provided with a sightseeing lens 6, a pressing pad 7 and a circuit board 8, an O-shaped ring 9 is arranged between the sightseeing lens 6 and the front end cover 4, a through capacitor 10 and a wiring terminal 11 are arranged in the shell 1, the through capacitor 10 and the wiring terminal 11 are electrically connected with the circuit board 8, the top end of the shell 1 is provided with a tube body, one end of the tube body is provided with a cable introducing device 12, the other end of the tube body is provided with a threaded plug 13, the lower end of the shell 1 is provided with a sensor 14, clamping plates 15 are arranged on the front side and the rear side of the sensor 14, and the two clamping plates 15 are fastened through bolts 16 and nuts 17

A third sealing ring 18 is arranged between the clamping plate 15 and the sensor 14 in a cushioning manner. Wherein, the side end of the shell 1 is fixedly connected with a first nameplate 19, and the top end of the tube body is fixedly connected with a second nameplate 20. The side end of the shell 1 and the first nameplate 19 are provided with mutually matched mounting holes; the top end of the tube body and the second nameplate 20 are provided with mutually matched mounting holes. The housing 1 is an integral cast aluminum housing. The sightseeing lens 6 is made of toughened glass. The connection terminal 11 is a square terminal.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modification, equivalent replacement, improvement, etc. made within the scope of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The differential pressure transmitter based on the fluid industry is characterized by comprising a shell (1), a rear end cover (2), a first sealing ring (3), a front end cover (4), a second sealing ring (5), a sight glass (6), a pressure pad (7), a circuit board (8), an O-shaped ring (9), a through capacitor (10), a wiring terminal (11), a cable introducing device (12), a threaded plug (13), a sensor (14), a clamping plate (15), a bolt (16), a nut (17) and a third sealing ring (18), wherein the rear end of the shell (1) is provided with the rear end cover (2), the first sealing ring (3) is arranged between the rear end cover (2) and the shell (1), the front end of the shell (1) is provided with the front end cover (4), the second sealing ring (5) is arranged between the front end cover (4) and the shell (1), the sight glass (6), the pressure pad (7) and the circuit board (8) are sequentially arranged on the inner side of the front end cover (4), the O-shaped ring (9) is arranged between the sight glass (6) and the front end cover (4), the through capacitor (10) and the wiring terminal (11) are arranged in sequence, the cable guiding device is characterized in that a pipe body is arranged at the top end of the shell (1), a cable guiding device (12) is arranged at one end of the pipe body, a threaded plug (13) is arranged at the other end of the pipe body, a sensor (14) is arranged at the lower end of the shell (1), clamping plates (15) are arranged on the front side and the rear side of the sensor (14), the two clamping plates (15) are fixedly connected through bolts (16) and nuts (17), and a third sealing ring (18) is arranged between the clamping plates (15) and the sensor (14) in a cushioning mode.

2. The differential pressure transmitter based on fluid industry according to claim 1, wherein a first nameplate (19) is fixedly connected to the side end of the housing (1), and a second nameplate (20) is fixedly connected to the top end of the pipe body.

3. The differential pressure transmitter based on fluid industry according to claim 2, characterized in that there are mutually aligned mounting holes on the lateral end of the housing (1) and on the first nameplate (19); the top end of the pipe body and the second nameplate (20) are provided with mutually matched mounting holes.

4. The differential pressure transmitter of claim 1, wherein the housing (1) is an integrally cast aluminum housing.

5. The differential pressure transmitter based on fluid industry according to claim 1, characterized in that the viewing mirror (6) is made of tempered glass.

6. The differential pressure transmitter of claim 1, wherein the connection terminal (11) is a square terminal.