CN210953229U

CN210953229U - Corrosion-resistant pressure transmitter

Info

Publication number: CN210953229U
Application number: CN201921873182.8U
Authority: CN
Inventors: 李国�
Original assignee: Shandong Zhongzi Instrument Measurement And Control Technology Co ltd
Current assignee: Shandong Zhongzi Instrument Measurement And Control Technology Co ltd
Priority date: 2019-11-03
Filing date: 2019-11-03
Publication date: 2020-07-07
Anticipated expiration: 2029-11-03

Abstract

The utility model discloses a corrosion-resistant pressure transmitter, include: the sensor comprises a transmitter body, a protective pipe and a telescopic pipe, wherein the transmitter body is provided with a cable and a sensor, the protective pipe is fixedly connected with the sensor, the protective pipe is provided with an upper cavity and a lower cavity, an upper open cavity is a telescopic pipe cavity, a lower closed cavity is a sensor cavity, the sensor is arranged in the sensor cavity, the sensor cavity is provided with a through hole at a position corresponding to a pressure inlet of the sensor, the through hole is provided with a filter screen, the telescopic pipe is arranged in the telescopic pipe cavity, the telescopic pipe is sleeved outside the cable, an installation block is arranged at the top of the telescopic pipe, a compression opening is arranged above the installation block, and a. The utility model discloses a set up flexible pipe in the cable outside, can protect the cable not corroded by the survey medium to flexible pipe coverage can be adjusted, can adjust the extension height of flexible pipe on the cable according to the degree of depth of sensor in the medium.

Description

Corrosion-resistant pressure transmitter

Technical Field

The utility model relates to a pressure transmitter technical field specifically is a corrosion-resistant 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 to be supplied to secondary instruments such as an indicating alarm instrument, a recorder, a regulator and the like for measurement, indication and process regulation, and is widely applied to various industrial automatic control environments, relating to various industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, war industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like.

The sensor can be directly put into the measured medium when the input pressure transmitter is used, the installation and the use are quite convenient, the sensor of the transmitter is immersed into the liquid to obtain a corresponding differential pressure signal, the reliability is high, the measurement precision is high, the structure is compact, the stability is good, the service life is long, however, the sensor and the cable need to be soaked in the measured medium for a long time during the use, the liquid medium often contains corrosivity, after the service life is long, the insulating sleeve on the surface layer of the cable is easily corroded, and the service life of the pressure transmitter is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a corrosion-resistant pressure transmitter to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a corrosion resistant pressure transmitter comprising: the sensor comprises a transmitter body, a protective pipe and a telescopic pipe, wherein the transmitter body is provided with a cable and a sensor, the protective pipe is fixedly connected with the sensor, the protective pipe is in a cylindrical pipe shape and comprises an upper open telescopic pipe cavity and a lower closed sensor cavity, the sensor is installed in the sensor cavity, the sensor cavity is provided with a through hole at a corresponding position of a pressure inlet of the sensor, the through hole is provided with a filter screen, the telescopic pipe is installed in the telescopic pipe cavity, the telescopic pipe is fixedly connected with the protective pipe, and the sleeve is installed outside the cable.

As a further aspect of the present invention: the telescopic pipe is characterized in that an installation block is arranged at the top of the telescopic pipe, a pressing opening is arranged above the installation block, a locking nut is sleeved outside the pressing opening, and threads matched with the locking nut are arranged outside the pressing opening.

As a further aspect of the present invention: the compressing opening is in a hollow round table shape, and a plurality of notches are formed in the side wall of the compressing opening.

As a further aspect of the present invention: and a sealing rubber ring is arranged on the inner side of the pressing opening, the sealing rubber ring is sleeved on the cable, and the inner diameter of the sealing rubber ring is the same as the diameter of the cable.

As a further aspect of the present invention: the lower surface of the mounting block is provided with an arc bulge, and the upper surface of the telescopic tube cavity is provided with a groove matched with the arc bulge.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up flexible pipe in the cable outside, can protect the cable not corroded by the survey medium to flexible pipe coverage can be adjusted, can adjust the extension height of flexible pipe on the cable according to the degree of depth of sensor in the medium, in addition through setting up the protective tube in the sensor outside, can filter the medium that the sensor contacted, both can reduce the probability that the sensor was corroded by the medium, also can prevent that the sensor from advancing to press mouthful entering impurity to arouse the jam.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of the connection between the protection tube and the extension tube of the present invention.

Fig. 4 is a schematic structural view of the middle telescopic tube compressing opening of the present invention.

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. 1-4, in an embodiment of the present invention, a corrosion resistant pressure transmitter includes: changer body 1, protecting tube 2 and flexible pipe 3, changer body 1 is equipped with cable 11 and sensor 12, protecting tube 2 and sensor 12 fixed connection, protecting tube 2 is the cylinder tubulose to two cavitys about being equipped with, the uncovered cavity in upper portion is flexible lumen 21, and the lower part closed cavity is sensor chamber 22, sensor 12 installs in sensor chamber 22, sensor chamber 22 advances to press mouthful corresponding position at sensor 12 to be equipped with the through-hole, the through-hole is equipped with filter screen 221, and the medium that gets into in sensor chamber 22 can be filtered by filter screen 221 earlier, and impurity in the medium can be intercepted by filter screen 221, consequently, can avoid impurity absorption to corrode sensor 12 on sensor 12, effectively reduces the probability that sensor 12 is corroded, can also avoid impurity to get into sensor 12 simultaneously and advance to press mouthful and arouse the jam.

The utility model discloses a cable, including flexible pipe 3,

installation piece

31, 32, compressing mouth 32 outside suit lock nut 33, compressing mouth 32 outside is equipped with the screw thread with lock nut 33 complex, compressing mouth 32 is hollow round platform shape, and the diameter is from up crescent down to be equipped with a plurality of incisions along the lateral wall, compressing mouth 32 inboard is equipped with sealing rubber ring 321, sealing rubber ring 321 suit is on cable 11 to the internal diameter of sealing rubber ring 321 is the same with cable 11 diameter, and the flexible pipe 3 is installed in flexible lumen 21, flexible pipe 3 is connected with protective tube 2 fixed connection to the suit is outside cable 11, flexible pipe 3 is the ripple shape, and length can stretch out and draw back, and flexible pipe 3 top is equipped with installation piece 31, the installation piece.

The locking nut 33 is screwed upwards, so that the notch on the pressing opening 32 is closed, the diameter of the pressing opening 32 is reduced, the sealing rubber ring 321 is extruded, the position of the pressing opening 32 and the cable 11 is fixed at the moment, the locking nut 33 is screwed downwards, the notch on the side wall of the pressing opening 32 is opened, the sealing ring 321 can slide up and down on the cable 11, the position of the mounting block 31 is adjusted up and down at the moment, the length of the telescopic pipe 3 can be changed, the protection range of the telescopic pipe 3 is changed, and therefore a user can adjust the length of the telescopic pipe 3 according to the length of the cable 11 soaked in a medium.

The lower surface of the installation block 31 is provided with an arc protrusion 311, the upper surface of the telescopic tube cavity 21 is provided with a groove 211 matched with the arc protrusion 311, so that the installation block 31 can be buckled with the protective tube 2, the installation block 31 slides downwards along the cable 11 until the installation block 31 is buckled with the protective tube 2, at the moment, the telescopic tube 3 is in a folded state and is compressed in the telescopic tube cavity 21, the occupied space of the cable 11 can be reduced, and the storage and the arrangement are convenient.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A corrosion resistant pressure transmitter comprising: changer body (1), protective tube (2) and flexible pipe (3), changer body (1) is equipped with cable (11) and sensor (12), its characterized in that: protective tube (2) and sensor (12) fixed connection, protective tube (2) are the cylinder tubulose, including open flexible lumen (21) in upper portion and lower part confined sensor chamber (22), sensor (12) are installed in sensor chamber (22), sensor chamber (22) are equipped with the through-hole at the pressure inlet corresponding position of sensor (12), the through-hole is equipped with filter screen (221), flexible pipe (3) are installed in flexible lumen (21), flexible pipe (3) and protective tube (2) fixed connection to the suit is outside at cable (11).

2. A corrosion resistant pressure transmitter as claimed in claim 1, wherein: the telescopic pipe is characterized in that an installation block (31) is arranged at the top of the telescopic pipe (3), a pressing opening (32) is arranged above the installation block (31), a locking nut (33) is sleeved outside the pressing opening (32), and threads matched with the locking nut (33) are arranged outside the pressing opening (32).

3. A corrosion resistant pressure transmitter as claimed in claim 2, wherein: the compressing opening (32) is in a hollow round table shape, and a plurality of notches are formed along the side wall.

4. A corrosion resistant pressure transmitter as claimed in claim 3, wherein: the inner side of the pressing opening (32) is provided with a sealing rubber ring (321), the sealing rubber ring (321) is sleeved on the cable (11), and the inner diameter of the sealing rubber ring (321) is the same as the diameter of the cable (11).

5. A corrosion resistant pressure transmitter as claimed in claim 2, wherein: the lower surface of the mounting block (31) is provided with an arc protrusion (311), and the upper surface of the telescopic tube cavity (21) is provided with a groove (211) matched with the arc protrusion (311).