CN210689682U

CN210689682U - Sensor

Info

Publication number: CN210689682U
Application number: CN201921405511.6U
Authority: CN
Inventors: 陈小祥; 乔忠德; 顾毅康; 肖才斌
Original assignee: Changzhou Luopanxing Detection Technology Co ltd
Current assignee: Changzhou Luopanxing Detection Technology Co ltd
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-05
Anticipated expiration: 2029-08-28

Abstract

The utility model relates to the technical field of sensors, in particular to a sensor, which comprises a protective cover, a sensor body and a purging channel, wherein the protective cover comprises a cover body and a filter disc, the filter disc is fixed at one end of the cover body, and a cavity is formed inside the cover body; one side of the sensor body, which is close to the measured object, is connected with the protective cover, and one end of the sensor body, which is close to the measured object, is provided with a sensor working surface I; the purging channel is arranged on the protective cover or/and the sensor body and is used for communicating an external purging medium source with the cavity. The utility model discloses a sensor has the safety cover to sweep the passageway through the setting, the intercommunication outside sweeps the medium source and carries out reverse sweeping, can have fine removal effect to adhering to, hiding the pollutant in protection cover surface and cassette micropore.

Description

Sensor

Technical Field

The utility model relates to a sensor technical field, in particular to sensor.

Background

In the fields of chemical engineering, cultivation, equipment manufacturing and the like, qualitative and quantitative analysis of liquid or gaseous substances by using a sensor is often required. Because the measured object often has complex components and extremely many impurities, the severe working environment easily causes the attachment, pollution and damage of the working surface of the sensor, thereby greatly limiting the use working condition of the sensor, shortening the service life and the maintenance period of the sensor and increasing the use cost of users.

SUMMERY OF THE UTILITY MODEL

The utility model provides a working face of sensor is easy because of abominable service environment is adhered to, pollutes, the problem of damage among the correlation technique, provides a sensor with safety cover to sweep the passageway through the setting, the intercommunication outside sweeps the medium source and carries out reverse sweeping, can have fine removal effect to adhering to, hiding the pollutant in safety cover surface and cassette micropore.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a sensor, comprising:

the protective cover comprises a cover body and a filter disc, the filter disc is fixed at one end of the cover body, and a cavity is formed in the cover body;

the sensor comprises a sensor body, wherein one side of the sensor body, which is close to a measured object, is connected with a protective cover, and one end of the sensor body, which is close to the measured object, is provided with a sensor working surface I;

and the purging channel is arranged on the protective cover or/and the sensor body and is used for communicating an external purging medium source with the cavity.

Preferably, the filter sheet has a microporous structure.

As a preferred scheme, a purging channel I is formed in the sensor body, one end of the purging channel I is communicated with an external purging medium source, and the other end of the purging channel I is communicated with the cavity.

As a preferred scheme, a purging channel IV is formed in the cover body, one end of the purging channel IV is communicated with an external purging medium source, and the other end of the purging channel IV is communicated with the cavity and points to the working surface I of the sensor.

As a preferred scheme, a purging channel II is formed in the cover body, a purging channel I is formed in the sensor body, one end of the purging channel I is communicated with the purging channel I, and the other end of the purging channel is communicated with the cavity.

As a preferred scheme, the sensor further comprises a detection head, wherein the detection head is positioned in the cavity inside the cover body and is fixedly installed on one side, close to a measured object, of the sensor body, a purging channel I and an opening are formed in the sensor body, one end of the purging channel I is communicated with an external purging medium source, and the other end of the purging channel I is communicated with the opening; the inside of detecting the head is seted up and is linked together with the opening sweep passageway III, the terminal surface that detects the head and the measured object contact is equipped with sensor working face II.

Preferably, the device further comprises a nozzle, one end of the nozzle is communicated with the purging channel III, and the other end of the nozzle is communicated with the cavity and is bent to point to the working surface II of the sensor.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a sensor body's outside is connected with the safety cover, and the cassette of safety cover is microporous structure, can effectively obstruct the pollutant that probably adheres to, pollutes and damage the sensor working face, very big improvement sensor's life, improved sensor's reliability, reduced the influence of pollutant to the detection precision, the safety cover can also block the influence of light to the sensor simultaneously; the purging channel in the utility model can be communicated with an external purging medium source, the protective cover is purged reversely from the interior of the protective cover, the better removing effect is achieved on pollutants attached to and hidden on the surface of the protective cover and in the micropores of the filter sheet, and the filter sheet is prevented from being attached to and blocked by the pollutants; the utility model discloses a sweep the passageway and can connect the nozzle, sweep the working face that the medium source directly sweeps, clean sensor through the switch-on outside, further prolong the maintenance cycle of sensor, in addition, sweep the passageway and can also communicate specific medium source, realize functions such as online calibration, readback, demarcation.

Drawings

Fig. 1 is a sectional view of embodiment 1 of the present invention;

fig. 2 is a cross-sectional view of embodiment 2 of the present invention;

fig. 3 is a sectional view of embodiment 3 of the present invention;

fig. 4 is a sectional view of embodiment 4 of the present invention.

In the figure:

1. the sensor comprises a protective cover, 101, a filter sheet, 102, a cover body, 103, purging channels II, 104, purging channels IV, 2, a sensor body, 201, purging channels I, 202, sensor working faces I, 203, an opening, 3, a detection head, 301, sensor working faces II, 302, purging channels III, 303, a nozzle, 4 and a cavity.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Example 1

As shown in fig. 1, a sensor comprises a protective cover 1 and a sensor body 2, wherein the protective cover 1 comprises a filter 101 and a cover 102, the filter 101 is in a microporous structure (a stainless steel woven mesh can be selected), the cover 102 is welded into a cylindrical shape by stainless steel, the filter 101 and one end of the stainless steel cover 102 are welded into a whole to form the protective cover 1, and a cavity 4 is formed inside the cover 102; sensor body 2 is close to one side of measured object and installs through threaded connection with safety cover 1, has seted up in sensor body 2 and has swept passageway I201, and the one end intercommunication outside medium source (can select gas/liquid medium to sweep) that sweeps passageway I201, other end intercommunication cavity 4, and the one end that sensor body 2 is close to the measured object is equipped with sensor working face I202.

When the sensor is used, the filter sheet 101 of the stainless steel woven mesh on the protective cover 1 can effectively prevent various pollutants such as particles, jelly and the like in a measured object from entering the inner cavity 4 of the protective cover 1, so that the adhesion and deposition of the pollutants on the working surface I202 of the sensor or the physical damage such as scratch to the working surface I202 of the sensor and the influence on the normal work of the sensor are greatly reduced; the purging channel I201 is communicated with an external gas/liquid purging medium source, the purging medium is introduced, the purging medium reversely purges the filter sheet 101 on the protective cover 1 from the inside of the protective cover 1, the filter sheet 101 is prevented from being attached, deposited and blocked by pollutants, and meanwhile, a small amount of loose sediments deposited on the working face I202 of the sensor can fall off due to gas/liquid flow and pressure change caused by purging.

Example 2

As shown in fig. 2, the sensor comprises a protective cover 1 and a sensor body 2, wherein the protective cover 1 comprises a filter sheet 101 and a cover body 102, the filter sheet 101 is in a microporous structure (a stainless steel microporous sintered sheet can be selected), the cover body 102 is welded into a cylindrical shape by stainless steel, the filter sheet 101 and one end of the stainless steel cover body 102 are welded into a whole to form the protective cover 1, a cavity 4 is formed inside the cover body 102, a purging channel iv 104 is formed in the cover body 102, one end of the purging channel iv 104 is communicated with an external purging medium source (a gas/liquid medium can be selected for purging), and the other end is communicated with the cavity 4 and points to a sensor working surface i; one side that sensor body 2 is close to the measured object is installed through threaded connection with safety cover 1, and the one end that sensor body 2 is close to the measured object is equipped with sensor working face I202.

When the sensor is used, the filter sheet 101 of the stainless steel woven mesh on the protective cover 1 can effectively prevent various pollutants such as particles, jelly and the like in a measured object from entering the inner cavity 4 of the protective cover 1, and the pollutants are greatly reduced from being attached to and deposited on the working surface I202 of the sensor, so that the physical damage such as scratch to the working surface I202 of the sensor is reduced; the purging channel IV 104 introduces gas/liquid purging medium to purge and clean the sensor working surface of the sensor body 2 by communicating with an external gas/liquid purging medium source

I202, make a small amount of deposit, the pollutant that adheres to on the I202 of sensor working face drop, blow filter 101 of safety cover 1 from the inside of safety cover 1 backward simultaneously, avoid filter 101 to be adhered to by the pollutant, deposit, jam.

Example 3

As shown in fig. 3, a sensor includes a protective cover 1 and a sensor body 2, the protective cover 1 includes a filter 101 and a cover 102, the filter 101 is of a microporous structure (a stainless steel woven mesh may be used), the cover 102 is welded into a cylindrical shape by stainless steel, the filter 101 and one end of the stainless steel cover 102 are welded into the protective cover 1, a cavity 4 is formed inside the cover 102, and a purging channel ii 103 is formed in the cover 102; one side of the sensor body 2, which is close to a measured object, is connected with the protective cover 1 through threads for mounting, and one end of the sensor body 2, which is close to the measured object, is provided with a sensor working surface I202; a purging channel I201 is formed in the sensor body 2, one end of the purging channel I201 is communicated with an external purging medium source (capable of being purged by gas/liquid media optionally), the other end of the purging channel I201 is communicated with one end of the purging channel II 103, the purging channel II 103 is L-shaped, the other end of the purging channel II 103 is communicated with the cavity 4 and points to the sensor working face I202, and purging is facilitated.

When the sensor is used, the filter sheet 101 on the protective cover 1 can effectively prevent various pollutants such as particles, jelly and the like in a measured object from entering the inner cavity of the protective cover 1, and the pollutants are greatly reduced from being attached to and deposited on the working surface I202 of the sensor, so that the physical damage such as scratch to the working surface I202 of the sensor is reduced; and the purging channel I201 is communicated with an external gas/liquid purging medium source, a gas/liquid purging medium is introduced to purge and clean the sensor working surface I202 of the sensor body 2 through the purging channel II 103, so that a small amount of pollutants deposited and attached on the sensor working surface I202 fall off, and meanwhile, the filter sheet 101 of the protection cover 1 is purged reversely from the inside of the protection cover 1, and the filter sheet 101 is prevented from being attached, deposited and blocked by the pollutants.

Example 4

As shown in fig. 4, a sensor includes a protective cover 1, a sensor body 2 and a detection head 3, the protective cover 1 includes a filter 101 and a cover 102, the filter 101 is of a microporous structure (a stainless steel microporous sintered sheet may be selected), the cover 102 is welded into a cylindrical shape by stainless steel, one end of the filter 101 and one end of the stainless steel cover 102 are welded into the protective cover 1, and a cavity 4 is formed inside the cover 102; one side of the sensor body 2, which is close to a measured object, is connected with the protective cover 1 through threads for mounting, and one end of the sensor body 2, which is close to the measured object, is provided with a sensor working surface I202; a purging channel I201 and an opening 203 are formed in the sensor body 2, one end of the purging channel I201 is communicated with an external purging medium source (capable of being purged by gas/liquid media optionally), and the other end of the purging channel I201 is communicated with the opening 203; detect head 3 and be located cavity 4 and install in sensor body 2 one side near the measured object through threaded connection, the terminal surface that detects head 3 and measured object contact is equipped with sensor working face II 301, detects the inside of head 3 and has seted up and sweep passageway III 302, sweeps passageway III 302 one end and sweeps passageway I201 through opening 203 and be linked together, the other end intercommunication nozzle 303, the nozzle 303 other end communicates cavity 4 and crooked directional sensor working face II 301.

When the sensor is used, the filter sheet 101 on the protective cover 1 can effectively prevent various pollutants such as particles, jelly and the like in a measured object from entering the inner cavity of the protective cover 1, and the pollutants are greatly reduced from being attached to and deposited on the working surface 301 of the detection head 3, so that the physical damage such as scratch to the sensor working surface II 301 of the detection head 3 is reduced; and the purging channel I201 is communicated with an external gas/liquid purging medium source, a gas/liquid purging medium is introduced to pass through the purging channel III 302 and is sprayed out from the nozzle 303 to purge and clean the sensor working surface II 301 of the detection head 3, so that a small amount of pollutants deposited and attached to the sensor working surface II 301 fall off, and meanwhile, the filter sheet 101 of the protection cover 1 is reversely purged from the inside of the protection cover 1, and the filter sheet 101 is prevented from being attached, deposited and blocked by the pollutants.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. A sensor, comprising:

the protective cover (1) comprises a filter sheet (101) and a cover body (102), the filter sheet (101) is fixed at one end of the cover body (102), and a cavity (4) is formed in the cover body (102);

the sensor comprises a sensor body (2), wherein one side, close to a measured object, of the sensor body (2) is connected with a protective cover (1), and a sensor working surface I (202) is arranged at one end, close to the measured object, of the sensor body (2);

and the purging channel is arranged on the protective cover (1) or/and the sensor body (2) and is used for communicating an external purging medium source with the cavity (4).

2. The sensor of claim 1, wherein: the filter sheet (101) is of a microporous structure.

3. The sensor of claim 2, wherein: the sensor is characterized in that a purging channel I (201) is formed in the sensor body (2), one end of the purging channel I (201) is communicated with an external purging medium source, and the other end of the purging channel I (201) is communicated with the cavity (4).

4. The sensor of claim 2, wherein: a purging channel IV (104) is formed in the cover body (102), one end of the purging channel IV (104) is communicated with an external purging medium source, and the other end of the purging channel IV (104) is communicated with the cavity (4) and points to the working face I (202) of the sensor.

5. The sensor of claim 2, wherein: a purging channel II (103) is formed in the cover body (102), a purging channel I (201) is formed in the sensor body (2), one end of the purging channel II (103) is communicated with the purging channel I (201), and the other end of the purging channel II (103) is communicated with the cavity (4) and points to a working face I (202) of the sensor.

6. The sensor of claim 2, wherein: the sensor is characterized by further comprising a detection head (3), wherein the detection head (3) is positioned in the cavity (4) and is fixedly arranged on one side, close to a measured object, of the sensor body (2); a purging channel I (201) and an opening (203) are formed in the sensor body (2), one end of the purging channel I (201) is communicated with an external purging medium source, and the other end of the purging channel I (201) is communicated with the opening (203); detect the inside of head (3) and offer the passageway III (302) that sweeps that is linked together with opening (203), the terminal surface that detects head (3) and measured object contact is equipped with sensor working face II (301).

7. The sensor of claim 6, wherein: the sensor working surface II (301) is bent and points to the cavity (4).