CN213336610U

CN213336610U - Novel pressure transmitter

Info

Publication number: CN213336610U
Application number: CN202022672827.0U
Authority: CN
Inventors: 肖明勋; 杨森; 刘加涛; 杨遂堂; 方素文
Original assignee: Shanghai Suwen Automation Technology Co ltd
Current assignee: Shanghai Suwen Automation Technology Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-06-01
Anticipated expiration: 2030-11-18

Abstract

The utility model discloses a novel pressure transmitter, which comprises a pressure transmitter body, wherein the pressure transmitter body comprises a cable duct, a circuit chamber and a sensor chamber, the circuit chamber is arranged on the lower surface of the cable duct, the bottom of the circuit chamber is fixedly communicated with the sensor chamber through a connecting sleeve, a pressure sensing sheet is fixedly arranged in the sensor chamber, the lower surface of the sensor chamber is fixedly connected with a connecting plate, a wavy pipe is fixedly communicated between the sensor chamber and the connecting plate, the wavy pipe is arranged as a rubber hose, the lower surface of the connecting plate is in threaded connection with a rotating nut, a connecting pipe is arranged in the rotating nut, a fixed polar plate is arranged in the connecting pipe, and by arranging the wavy pipe, the wavy pipe is arranged in a wavy shape and is arranged as a rubber hose, so that the instant impact force can be relieved through the wavy pipe when, the condition that the pressure induction sheet is damaged by overlarge instant impact force is prevented.

Description

Novel pressure transmitter

Technical Field

The utility model relates to a pressure instrument technical field specifically is a novel pressure transmitter.

Background

The pressure transmitter is a device for converting pressure into pneumatic signals or electric signals for control and remote transmission, and can convert physical pressure parameters of gas, liquid and the like sensed by a load cell sensor into standard electric signals to be supplied to secondary instruments such as an indication alarm instrument, a recorder, a regulator and the like for measurement, indication and process regulation; the pressure transmitter is the most common sensor in industrial practice, is widely applied to various industrial automatic control environments, and relates to various industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, military industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like.

The existing pressure transmitter is unstable with external connection, easily falls off in a hydraulic system under the condition of severe vibration, when a valve of a pipeline is suddenly closed or opened, hydraulic oil in the pipeline can generate severe lifting fluctuation due to the transient pressure, and is called as hydraulic impact, the pipeline of a hydraulic element which can be caused by the impact bears the huge transient pressure, the pressure transmitter is easy to damage and is accompanied with vibration and noise, the pressure transmitter is installed outside the pipeline and is mutually connected with the inside of the pipeline when the pressure transmitter is installed, and the transient pressure easily ensures that the pressure transmitter considers the pressure inside the pipeline to be overhigh, so that extra misoperation is generated, wrong signals are transmitted, and the production and the work of equipment are influenced

Therefore, a new pressure transmitter is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel pressure transmitter, through setting up the connecting pipe, the fixed polar plate, measure the diaphragm, the ripple membrane seat, the low pressure holds room and the cooperation of high pressure chamber and uses, can transmit the surge pressure that the diaphragm received on the forced induction piece, and through setting up the wave pipe, because the wave pipe sets up to the wave shape, and set up to hose, so can carry out the release through the wave pipe to impact force in the twinkling of an eye when receiving hydraulic shock, prevent the too big condition that impact force destroys the forced induction piece in the twinkling of an eye, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a novel pressure transmitter comprises a pressure transmitter body, wherein the pressure transmitter body comprises a cable guide pipe, a circuit chamber and a sensor chamber, the circuit chamber is arranged on the lower surface of the cable guide pipe, the bottom of the circuit chamber is fixedly communicated with the sensor chamber through a connecting sleeve, a pressure sensing sheet is fixedly arranged in the sensor chamber, a connecting plate is fixedly connected to the lower surface of the sensor chamber, a wave pipe is fixedly communicated between the sensor chamber and the connecting plate, the wavy tube is a rubber hose, the lower surface of the connecting plate is in threaded connection with a rotating nut, a connecting pipe is arranged in the rotating nut, a fixed polar plate is arranged in the connecting pipe, a measuring diaphragm is arranged in the fixed polar plate, the fixed polar plate is externally provided with a corrugated membrane seat, and a low-pressure accommodating chamber and a high-pressure accommodating chamber are respectively arranged between the corrugated membrane seat and the connecting pipe.

Preferably, the cable guide pipe comprises a screwing connector, the screwing connector is arranged at one end of the cable guide pipe, and the cable guide pipe is a copper pipe.

Preferably, the circuit chamber comprises a liquid crystal display window and an operation key, and the liquid crystal display window and the operation key are both arranged on the upper surface of the circuit chamber.

Preferably, the top of the pressure sensing piece is fixedly connected with a data line, and one end of the data line is electrically connected with the inside of the circuit chamber.

Preferably, the sensor chamber and the connecting plates are fixedly connected with connecting rods, the connecting rods are arranged into four groups, and the bottom ends of the four groups of connecting plates are respectively and fixedly installed on the upper surfaces of the connecting plates.

Preferably, the shells of the circuit chamber and the sensor chamber are both steel shells, and anti-corrosion paint is arranged on the surfaces of the circuit chamber and the sensor chamber.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a set up connecting pipe, fixed polar plate, measure diaphragm, ripple membrane seat, low pressure and hold room and high pressure and hold the room cooperation and use, can transmit the impulse pressure that the diaphragm received to the forced induction piece on to through setting up the wave pipe, because the wave pipe sets up to the wave shape, and sets up to the rubber hose, so can carry out the release through the wave pipe to impact force in the twinkling of an eye when receiving hydraulic shock, prevent the too big condition that impact force destroys the forced induction piece in the twinkling of an eye.

Drawings

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

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a pressure transmitter body; 2. a cable guide; 201. screwing the joint; 3. a circuit chamber; 301. a liquid crystal display window; 302. operating a key; 4. connecting sleeves; 5. a sensor chamber; 6. a pressure sensing sheet; 7. a data line; 8. a connecting rod; 9. a connecting plate; 10. a wave tube; 11. rotating the nut; 12. a connecting pipe; 13. measuring the diaphragm; 14. fixing the polar plate; 15. a low pressure chamber; 16. a high pressure chamber; 17. a corrugated membrane seat.

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. 1-3, the present invention provides a technical solution: a novel pressure transmitter comprises a pressure transmitter body 1, wherein the pressure transmitter body 1 comprises a cable guide pipe 2, a circuit chamber 3 and a sensor chamber 5, the circuit chamber 3 is arranged on the lower surface of the cable guide pipe 2, the cable guide pipe 2 comprises a screwed joint 201, the screwed joint 201 is arranged at one end of the cable guide pipe 2, the cable guide pipe 2 is arranged to be a copper pipe, a penetrating wire can be firmly fixed, the wire is protected, moisture and pressure are prevented, and a certain antimagnetic and explosion-proof function is realized by combining with a metal material of the cable guide pipe 2; the guide pipe is made of the corrosion-resistant and rust-proof brass material, so that the cable in the guide pipe can be effectively protected, and the guide pipe has a antimagnetic function, so that a circuit runs stably;

the bottom of the circuit chamber 3 is fixedly communicated with the sensor chamber 5 through a connecting sleeve 4, the circuit chamber 3 comprises a liquid crystal display window 301 and an operation key 302, and the liquid crystal display window 301 and the operation key 302 are both arranged on the upper surface of the circuit chamber 3, so that various parameters can be displayed in real time, and people can conveniently observe in real time; by arranging the operation key 302, the circuit chamber 3 can be conveniently zeroed and data can be conveniently transmitted at the rear cover end of the circuit chamber;

a pressure sensing sheet 6 is fixedly arranged in the sensor chamber 5, the top of the pressure sensing sheet 6 is fixedly connected with a data wire 7, one end of the data wire 7 is electrically connected with the inside of the circuit chamber 3, and the data wire 7 is arranged to conveniently transmit a changed current signal to the inside of the circuit chamber 3, convert the current signal into a digital signal through a converter of a circuit board in the circuit chamber 3 and finally convert the digital signal into a graphic signal to be output on a display;

the sensor chamber 5 lower fixed surface is connected with connecting plate 9, fixed intercommunication has wavy pipe 10 between sensor chamber 5 and the connecting plate 9, and wavy pipe 10 sets up to the rubber hose, connecting plate 9 lower surface threaded connection has rotating nut 11, be provided with connecting pipe 12 in the rotating nut 11, be provided with fixed polar plate 14 in the connecting pipe 12, be provided with in the fixed polar plate 14 and measure diaphragm 13, install ripple membrane seat 17 outside the fixed polar plate 14, be provided with low pressure between ripple membrane seat 17 and the connecting pipe 12 and hold room 15 and high pressure respectively and hold room 16.

Connecting rods 8 are fixedly connected between the sensor chamber 5 and the connecting plates 9, the connecting rods 8 are arranged into four groups, the bottom ends of the four groups of connecting plates 9 are respectively and fixedly arranged on the upper surfaces of the connecting plates 9, and the connecting rods 8 are arranged to conveniently connect the connecting plates 9; the shells of the circuit chamber 3 and the sensor chamber 5 are both steel shells, and anti-corrosion paint is arranged on the surfaces of the circuit chamber 3 and the sensor chamber 5, so that the service lives of the circuit chamber 3 and the sensor chamber 5 are prolonged; when great impact force in the twinkling of an eye appears, because the wave pipe 10 sets up to the wave shape, and sets up to rubber hose, so can carry out the release through wave pipe 10 to impact force in the twinkling of an eye when receiving hydraulic shock, prevent the too big condition that impact force in the twinkling of an eye destroys pressure-sensitive strip 6, so pressure can not arrive pressure-sensitive strip 6 in the twinkling of an eye, vibrations can be in the inside disintegration of spiral helicine wave pipe 10, can slow down the impact in the twinkling of an eye to electric elements, better protection the device.

The working principle is as follows: when in use, the pressure transmitter body 1 comprises a cable guide pipe 2, a circuit chamber 3 and a sensor chamber 5, the circuit chamber 3 is arranged on the lower surface of the cable guide pipe 2, the bottom of the circuit chamber 3 is fixedly communicated with the sensor chamber 5 through a connecting sleeve 4, a pressure sensing sheet 6 is fixedly arranged in the sensor chamber 5, the lower surface of the sensor chamber 5 is fixedly connected with a connecting plate 9, a corrugated pipe 10 is fixedly communicated between the sensor chamber 5 and the connecting plate 9, the corrugated pipe 10 is arranged as a rubber hose, a rotating nut 11 is connected with the lower surface of the connecting plate 9 in a threaded manner, a connecting pipe 12 is arranged in the rotating nut 11, a fixed polar plate 14 is arranged in the connecting pipe 12, a measuring diaphragm 13 is arranged in the fixed polar plate 14, a corrugated diaphragm seat 17 is arranged outside the fixed polar plate 14, a low-pressure accommodating chamber 15 and a high, the connecting pipe 12 is installed above the pipeline and connected with the monitored pipeline or container, two pressures of the measured medium are introduced into the low pressure chamber 15 and the high pressure chamber 16, the pressure in the low pressure chamber 15 is atmospheric pressure or vacuum, acts on the isolating diaphragms at the two sides of the sensitive element, and is transmitted to the two sides of the measuring diaphragm 13 through the isolating diaphragms and the filling liquid in the element, the measuring diaphragm 13 is contacted with the measured hydraulic oil, when in work, the measured liquid causes the pressure to change through the switch of the gate, so the filling liquid in the connecting pipe 12 moves to the inside of the wave pipe 10 through the outlet at the top, reaches the bottom of the pressure sensing sheet 6 to extrude the pressure sensing sheet 6, the pressure sensing sheet 6 is extruded to generate deformation, and the resistance change of the pressure sensing sheet 6 causes the resistance change of the pressure sensing sheet 6, and the change of the current is caused by the change of the resistance, the current signal which changes is transmitted to the inside of the circuit room 3 through the data line 7, the current signal is converted into a digital signal through a converter of a circuit board in the circuit room 3 and finally converted into a graphic signal to be output on a display, a user can observe the pressure change in a liquid crystal display window 301 in the circuit room 3, when a large instant impact force occurs, the wave tube 10 is wave-shaped and is arranged as a rubber hose, so that the instant impact force can be relieved through the wave tube 10 when the hydraulic impact occurs, the situation that the pressure sensing sheet 6 is damaged by the overlarge instant impact force is prevented, the pressure can not reach the pressure sensing sheet 6 instantly, the vibration can be collapsed in the spiral wave tube 10, the instant impact on an electric element can be relieved, and the device is protected better.

In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel pressure transmitter, includes pressure transmitter body (1), its characterized in that: the pressure transmitter body (1) comprises a cable guide pipe (2), a circuit chamber (3) and a sensor chamber (5), the circuit chamber (3) is arranged on the lower surface of the cable guide pipe (2), the bottom of the circuit chamber (3) is fixedly communicated with the sensor chamber (5) through a connecting sleeve (4), a pressure sensing sheet (6) is fixedly arranged in the sensor chamber (5), a connecting plate (9) is fixedly connected to the lower surface of the sensor chamber (5), a wave pipe (10) is fixedly communicated between the sensor chamber (5) and the connecting plate (9), the wave pipe (10) is arranged to be a rubber hose, a rotating nut (11) is in threaded connection with the lower surface of the connecting plate (9), a connecting pipe (12) is arranged in the rotating nut (11), a fixed polar plate (14) is arranged in the connecting pipe (12), a measuring diaphragm (13) is arranged in the fixed polar plate (14), a corrugated membrane seat (17) is arranged outside the fixed polar plate (14), and a low-pressure accommodating chamber (15) and a high-pressure accommodating chamber (16) are respectively arranged between the corrugated membrane seat (17) and the connecting pipe (12).

2. The novel pressure transmitter of claim 1 wherein: the cable guide pipe (2) comprises a screwing connector (201), the screwing connector (201) is arranged at one end of the cable guide pipe (2), and the cable guide pipe (2) is a copper pipe.

3. The novel pressure transmitter of claim 1 wherein: the circuit chamber (3) comprises a liquid crystal display window (301) and an operation key (302), and the liquid crystal display window (301) and the operation key (302) are both arranged on the upper surface of the circuit chamber (3).

4. The novel pressure transmitter of claim 1 wherein: the top of the pressure sensing piece (6) is fixedly connected with a data line (7), and one end of the data line (7) is electrically connected with the inside of the circuit chamber (3).

5. The novel pressure transmitter of claim 1 wherein: connecting rods (8) are fixedly connected between the sensor chambers (5) and the connecting plates (9), the connecting rods (8) are arranged into four groups, and the bottom ends of the four groups of connecting plates (9) are respectively and fixedly installed on the upper surfaces of the connecting plates (9).

6. The novel pressure transmitter of claim 1 wherein: the shells of the circuit chamber (3) and the sensor chamber (5) are both steel shells, and anti-corrosion paint is arranged on the surfaces of the circuit chamber (3) and the sensor chamber (5).