CN217818805U

CN217818805U - Protection device for humidity meter sensor

Info

Publication number: CN217818805U
Application number: CN202221565798.0U
Authority: CN
Inventors: 韩成; 姚钰; 姚洪猛
Original assignee: Huaneng Hainan Changjiang Nuclear Power Co ltd
Current assignee: Huaneng Hainan Changjiang Nuclear Power Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-15
Anticipated expiration: 2032-06-22

Abstract

The utility model provides a protection device for a sensor of a hygronom, which comprises a protective sleeve base, a sensor protective sleeve connected with the protective sleeve base, a sensor base arranged in the protective sleeve base, and a sensor communicating vessel arranged on the sensor base and positioned in the sensor protective sleeve; a sensor is arranged at the top end of the sensor communicating vessel, and a sensor connecting wire is led out from the bottom of the sensor base; a fluid channel is axially arranged on the side part of the sensor protective sleeve; and a filter assembly is arranged at the top of the sensor protective sleeve. The utility model provides a pair of hygrograph sensor protection device can guarantee that gas flow measures, ensures the measuring accuracy.

Description

Protection device for humidity meter sensor

Technical Field

The utility model relates to a chemical technology field of nuclear power plant, in particular to hygrograph sensor protection device.

Background

In order to quickly measure the helium humidity, a portable humidity meter is configured in a high-temperature gas cooled reactor demonstration project, and a humidity sensor is used for measuring the helium humidity of a primary loop.

Portable hygrometer's humidity transducer is the disk form, arranges cylinder protection cavity central point in and puts, and cylindric protection section of thick bamboo is solid metal, wraps up humidity transducer to screw through internal thread and sensor base external screw thread, become humidity measurement device, when measuring humidity, arrange humidity measurement device in and measure the circulation cell, the helium gets into the cylinder protection cavity from humidity measurement device port in the circulation cell, contacts with the sensor, thereby measures the humidity of helium.

During measurement, helium enters from the inlet of the measurement flow cell and flows out from the outlet. Because portable humidity measurement device bottom is the sensor base, is inclosed cavity with outside cylinder protection section of thick bamboo, forms "dead huqin" for only a small amount of gas gets into from humidity measurement device port and contacts with humidity transducer, this part helium gathering is in humidity measurement device base region, and difficult follow-up helium flows outward from the port again, causes the unable humidity measurement cavity that gets into of follow-up helium, thereby influences humidity measurement's accuracy.

Therefore, there is a need to develop a new protection device for a portable humidity meter sensor that can ensure the measurement of gas flow and the measurement accuracy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a portable hygrometer sensor protection device is provided which can guarantee that gas flow is measured, ensure to measure the accuracy.

In order to solve the technical problem, the utility model provides a protection device for a humidity meter sensor, include

A protective sheath base, a sensor protective sheath connected with the protective sheath base, a sensor base arranged in the protective sheath base, and

the sensor communicating vessel is arranged on the sensor base and positioned in the sensor protective sleeve;

a sensor is arranged at the top end of the sensor communicating vessel, and a sensor connecting wire is led out from the bottom of the sensor base;

a fluid channel is axially arranged at the side part of the sensor protective sleeve;

and a filter assembly is arranged at the top of the sensor protective sleeve.

Further, set up the internal thread in the protective sheath base, the sensor base sets up the external screw thread, the sensor base spiro union is in inside the protective sheath base.

Further, a sealing piece is arranged at the joint of the sensor base and the protective sleeve base.

Furthermore, the sensor protective sleeve and the protective sleeve base are of an integrated structure, and the connecting part of the sensor protective sleeve and the protective sleeve base is provided with an external thread for connecting a measuring flow cell.

Further, the number of the fluid passages is three, and the three fluid passages are uniformly arranged on the circumference of the sensor protective sleeve.

Further, the included angle of the fan-shaped angle of the fluid channel is 60 degrees, and the included angle of the center line of the included angle of the fan-shaped angles of two adjacent fluid channels is 120 degrees.

Further, the lower end of the fluid channel is connected with the external thread, and the upper end of the fluid channel is 20-30cm lower than the sensor at the central position of the sensor protective sleeve.

Furthermore, the filtering component comprises a circular gas filter arranged on an opening at the top end of the sensor protective sleeve, a filter buckle plate for fixing the gas filter at the top end of the sensor protective sleeve and a rotating shaft fixedly arranged on the side part of the filter buckle plate, wherein the outer diameter of the gas filter is larger than the inner diameter of the sensor protective sleeve but not larger than the outer diameter of the sensor protective sleeve.

Further, the sensor protective sheath top outside sets up the external screw thread, the filter buckle inboard sets up the internal thread, the filter buckle spiro union be in sensor protective sheath top.

The utility model provides a pair of hygrograph sensor protection device sets up fluid passage on the sensor protection cover, when carrying out gas humidity measurement such as helium, can make gas such as helium get into the back from sensor protection cover port, and the fluid passage on the sensor protection cover flows out after the humidity transducer is directly flowed through, can guarantee that gas flow measures, has ensured measuring accuracy.

Drawings

Fig. 1 is a front view of a protection device for a humidity sensor according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a protection device for a humidity meter sensor provided by an embodiment of the present invention.

Detailed Description

Referring to fig. 1 and fig. 2, an embodiment of the present invention provides a protection device for a humidity meter sensor, including

The sensor protection cover comprises a protection cover base 1, a sensor protection cover 4 connected with the protection cover base 1, a sensor base 9 arranged in the protection cover base 1, and a sensor communicating vessel 7 arranged on the sensor base 9 and located in the sensor protection cover 4.

Wherein, sensor 8 is set up on sensor linker 7 top, and sensor connecting wire 6 is drawn forth from sensor base 9 bottom.

Wherein, the fluid channel 3 is axially arranged at the side part of the sensor protection sleeve 4, and the filter component 5 is arranged at the top part of the sensor protection sleeve 4.

As a concrete implementation of the utility model, set up the internal thread in the protective sheath base 1, the sensor base 9 outside sets up the external screw thread, and sensor base 9 passes through threaded connection's mode spiro union inside protective sheath base 1. And, the junction of sensor base 9 and protective sheath base 1 sets up the sealing member, guarantees that sensor base 9 and protective sheath base 1 are connected closely.

As a concrete implementation mode of the utility model, sensor protective sheath 4 and protective sheath base 1 structure as an organic whole, sensor protective sheath 4 sets up external screw thread 2 with protective sheath base 1's junction to be connected sensor protective sheath 4 with the measurement circulation pond, carry out the humidity measurement.

As a specific embodiment of the present invention, the sensor protection sleeve 4 is provided with three fluid passages 3, and the three fluid passages 3 are uniformly arranged on the circumference of the sensor protection sleeve 4.

The included angle of the fan-shaped angle of the fluid passage 3 is 60 degrees, and the included angle of the center line of the included angle of the fan-shaped angles of two adjacent fluid passages 3 is 120 degrees.

Meanwhile, the lower end of the fluid channel 3 is connected with the external thread 2 on the sensor protective sleeve 4, and the upper end of the fluid channel 3 is 20-30cm lower than the central position of the sensor 8 on the sensor protective sleeve 4. Can guarantee that sensor 8 parcel is inside sensor protective sheath 4, avoid sensor 8 to receive to collide with and damage.

The top end of the sensor protection cover 4 is open, so that when the humidity of gas such as helium is measured, the gas such as helium can smoothly enter the inside of the sensor protection cover 4 to contact with the sensor 8. However, in order to filter the gas to be measured such as helium gas entering the sensor cover 4, the filter unit 5 is provided at the tip of the sensor cover 4.

As a specific embodiment of the present invention, the filter assembly 5 comprises a circular gas filter 52 disposed on the top opening of the sensor protection cover 4, a filter buckle 53 for fixing the gas filter 52 on the top of the sensor protection cover 4, and a rotating shaft 51 fixedly disposed on the side of the filter buckle 53. Wherein the outer diameter of the gas filter 52 is larger than the inner diameter of the sensor sock 4 but smaller than the outer diameter of the sensor sock 4. The filter buckle plate 53 can fix the gas filter 52 on the top end of the sensor protective sleeve 4 by rotating the rotating shaft 51 fixed on the side part of the filter buckle plate 53.

As a concrete implementation mode of the utility model, the top outside of sensor protective sheath 4 sets up the external screw thread, and the inboard of filter buckle 53 sets up the internal thread, and filter buckle 53 passes through threaded connection's mode spiro union at the top of sensor protective sheath 4. The gas filter 52 can be pressed or taken out through rotating the rotating shaft 51 fixed at the side part of the filter buckle plate 53 at different angles, and the gas filter 53 can filter solid impurities carried in gas to be measured, such as helium, and protect the sensor 8 in the sensor protective sleeve 4. When maintenance is needed, the filter assembly 5 can be conveniently detached and replaced.

The utility model provides a pair of hygrograph sensor protection device, when carrying out humidity measurement to gases such as helium, earlier through external screw thread 2 on the sensor protective sheath 4, be connected sensor protective sheath 4 with the measuring flow cell, then let in the gas that awaits measuring such as helium in to sensor protective sheath 4 through filtering component 5 from sensor protective sheath 4 top, the gas that awaits measuring such as helium flows through sensor 8 at sensor protective sheath 4 flow, measure the humidity of the gas that awaits measuring through sensor 8, the gas that awaits measuring can flow out from the fluid passage 3 on the sensor protective sheath 4 behind the sensor 8. Like this gaseous await measuring such as helium can be constantly from the inflow of sensor protective sheath 4 top port, can be constantly from flowing out from fluid passage 3 on the sensor protective sheath 4 again, has avoided helium to wait for behind the gaseous entering sensor protective sheath 4 difficult from flowing out in the sensor protective sheath 4 and the phenomenon of "dead-end-of-the-hair" appears, has guaranteed that the gaseous measurement that can flow of awaiting measuring has ensured the measuring accuracy of gas humidity.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a hygrograph sensor protection device which characterized in that: comprises that

A protective sleeve base (1), a sensor protective sleeve (4) connected with the protective sleeve base (1), a sensor base (9) arranged in the protective sleeve base (1), and

the sensor communicating vessel (7) is arranged on the sensor base (9) and is positioned in the sensor protective sleeve (4);

a sensor (8) is arranged at the top end of the sensor communicating vessel (7), and a sensor connecting wire (6) is led out from the bottom of a sensor base (9);

a fluid channel (3) is axially arranged at the side part of the sensor protective sleeve (4);

and a filter component (5) is arranged at the top of the sensor protective sleeve (4).

2. The hygrometer sensor protection device of claim 1, wherein: set up the internal thread in protective sheath base (1), sensor base (9) set up the external screw thread, sensor base (9) spiro union is in inside protective sheath base (1).

3. The hygrometer sensor protection device of claim 2, wherein: and a sealing element is arranged at the joint of the sensor base (9) and the protective sleeve base (1).

4. The hygrometer sensor protection device of claim 1, wherein: the sensor protection sleeve (4) and the protection sleeve base (1) are of an integrated structure, and the connecting part of the sensor protection sleeve (4) and the protection sleeve base (1) is provided with an external thread (2) for connecting a measuring flow cell.

5. The hygrometer sensor protection device of claim 4, wherein: the number of the fluid passages (3) is three, and the three fluid passages (3) are uniformly arranged on the circumference of the sensor protective sleeve (4).

6. The hygrometer sensor protection device of claim 5, wherein: the included angle of the fan-shaped angle of the fluid channel (3) is 60 degrees, and the included angle of the center line of the fan-shaped included angles of two adjacent fluid channels (3) is 120 degrees.

7. The hygrometer sensor protection device of claim 6, wherein: the lower end of the fluid channel (3) is connected with the external thread (2), and the upper end of the fluid channel (3) is lower than the sensor (8) by 20-30cm at the central position of the sensor protective sleeve (4).

8. The hygrometer sensor protection device of claim 1, wherein: the filter assembly (5) comprises a circular gas filter (52) arranged on an opening at the top end of the sensor protective sleeve (4), and the gas filter (52) is fixed on a filter buckle plate (53) at the top end of the sensor protective sleeve (4) and a rotating shaft (51) fixedly arranged on the side part of the filter buckle plate (53), wherein the outer diameter of the gas filter (52) is larger than the inner diameter of the sensor protective sleeve (4) but not larger than the outer diameter of the sensor protective sleeve (4).

9. The hygrometer sensor protection device of claim 8, wherein: the sensor protective sheath (4) top outside sets up the external screw thread, filter buckle (53) inboard sets up the internal thread, filter buckle (53) spiro union is in sensor protective sheath (4) top.