CN217035531U

CN217035531U - High-sensitivity thermal flow switch

Info

Publication number: CN217035531U
Application number: CN202220968837.5U
Authority: CN
Inventors: 郑海彬
Original assignee: Fujian Shenpai Valve Manufacturing Co ltd
Current assignee: Fujian Shenpai Valve Manufacturing Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-07-22
Anticipated expiration: 2032-04-25

Abstract

The utility model belongs to the technical field of thermal flow switches, and particularly relates to a high-sensitivity thermal flow switch, which structurally comprises a thermal flow switch main body, a connecting pipe, a protective device, an induction rod and a heat sensor, wherein the connecting pipe, the protective device and the induction rod are fixedly arranged at the bottom end of the thermal flow switch main body; the opening is arranged on the outer side of the hollow sleeve and is close to the heat sensor, so that the contact quantity of the heat sensor by fluid is guaranteed, and the sensing sensitivity is improved.

Description

High-sensitivity thermal flow switch

Technical Field

The utility model belongs to the technical field of thermal flow switches, and particularly relates to a high-sensitivity thermal flow switch.

Background

The thermal flow switch is designed by utilizing the principle that the temperature change of a probe generates a difference value, a heating sensor and two heat-sensitive sensors are arranged in the probe and are contacted with a medium;

however, the thermal flow switch in the prior art also has the problem of poor resistance of the probe to fluid impact.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, a high-sensitivity thermal flow switch is provided so as to solve the problem that a probe of the thermal flow switch is poor in fluid impact resistance, and the beneficial effect of improving the fluid impact resistance by additionally arranging a force reducing component is achieved.

(II) technical scheme

The utility model is realized by the following technical scheme: the utility model provides a high-sensitivity thermal flow switch, which comprises a thermal flow switch main body, a connecting pipe, a protective device, an induction rod and a heat sensor, wherein the connecting pipe, the protective device and the induction rod are fixedly arranged at the bottom end of the thermal flow switch main body;

the protection device comprises a hollowed-out sleeve, a support rod, a base plate and an opening, wherein the support rod is fixedly connected to the inner side of the hollowed-out sleeve, the base plate is fixedly connected to the outer side of the support rod, the base plate is attached to the outer side of the induction rod, the opening is formed in the outer side, close to the heat sensor, of the hollowed-out sleeve, the opening is communicated with the inner side and the outer side of the hollowed-out sleeve, and the hollowed-out sleeve is fixedly installed at the bottom end of the main body of the thermal flow switch.

Further, the thermal sensors are provided with a plurality of groups.

Furthermore, the branch is provided with the multiunit and its evenly distributed is inboard in the fretwork sleeve pipe.

Further, a rubber layer is arranged on the outer side of the base plate.

Furthermore, the hollow sleeve, the support rod and the base plate are all heat-insulating materials.

(III) advantageous effects

Compared with the prior art, the utility model has the following beneficial effects:

in order to solve the problem of poor fluid impact resistance of the thermal flow switch probe, the protection device is arranged between the bottom end of the thermal flow switch main body and the outer side of the induction rod, the contact quantity of liquid flow is reduced through the hollow sleeve, and the support stability of the induction rod is improved through the support rod and the base plate, so that the beneficial effect of improving the fluid impact resistance through additionally arranging the force reducing part is achieved;

through set up the opening in the fretwork sleeve pipe outside, and the opening is close to thermal sensor to this guarantees thermal sensor by the contact volume of fluid, improves the response sensitivity.

Drawings

Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

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

FIG. 2 is a schematic view of a portion of the structure A of the present invention;

in the figure: the thermal type flow switch comprises a thermal type flow switch main body-1, a connecting pipe-2, a protective device-3, an induction rod-4, a thermal sensor-5, a hollow sleeve-31, a support rod-32, a backing plate-33 and an opening-34.

Detailed Description

Referring to fig. 1 and 2, the present invention provides a high-sensitivity thermal flow switch: the thermal flow switch comprises a thermal flow switch main body 1, a connecting pipe 2, a protection device 3, an induction rod 4 and a thermal sensor 5, wherein the connecting pipe 2, the protection device 3 and the induction rod 4 are fixedly arranged at the bottom end of the thermal flow switch main body 1, the connecting pipe 2 is arranged at the upper end of the outer side of the protection device 3, the induction rod 4 is arranged at the inner side of the protection device 3, and the thermal sensor 5 is fixedly embedded in the outer side of the induction rod 4;

wherein the thermal sensors 5 are provided in a plurality of sets.

Referring to fig. 1 and 2, the protection device 3 includes a hollow sleeve 31, a support rod 32, a pad 33 and an opening 34;

a support rod 32 is fixedly connected to the inner side of the hollow sleeve 31, a backing plate 33 is fixedly connected to the outer side of the support rod 32, and the backing plate 33 is attached to the outer side of the induction rod 4, so that the support stability of the induction rod 4 is improved;

the opening 34 is arranged close to the outer side of the thermal sensor 5, so that the contact amount of the thermal sensor 5 by fluid is ensured, and the sensing sensitivity is improved;

the opening 34 communicates the inner side and the outer side of the hollow sleeve 31, and the hollow sleeve 31 is fixedly installed at the bottom end of the thermal flow switch main body 1.

Wherein, the support rods 32 are provided with a plurality of groups which are evenly distributed at the inner side of the hollow sleeve 31,

the position is reasonably arranged, and the stability is improved.

Wherein, the outside of the backing plate 33 is provided with a rubber layer for providing contact protection.

The hollow sleeve 31, the support rod 32 and the backing plate 33 are all heat-insulating materials, so that variation is prevented, and detection precision is guaranteed.

The working principle is as follows: firstly, taking out the high-sensitivity thermal flow switch and placing the high-sensitivity thermal flow switch at a use position;

then, the installation is carried out stably through the connecting pipe 2, and the external power connection is carried out on the thermal flow switch main body 1;

when the thermal flow switch is used, the protection device 3 arranged between the bottom end of the thermal flow switch main body 1 and the outer side of the induction rod 4 reduces the liquid flow contact amount through the hollow sleeve 31, and the support rod 32 and the base plate 33 improve the support stability of the induction rod 4, so that the beneficial effect of improving the fluid impact resistance through additionally arranging a force reducing part is achieved;

finally, the opening 34 is arranged on the outer side of the hollowed-out sleeve 31, and the opening 34 is close to the thermal sensor 5, so that the contact quantity of the thermal sensor 5 by fluid is ensured, and the sensing sensitivity is improved.

The control mode of the utility model is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the utility model is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the utility model.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model 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 high-sensitivity thermal flow switch, comprising: the thermal flow switch comprises a thermal flow switch main body (1), a connecting pipe (2), a protection device (3), an induction rod (4) and a thermal sensor (5), wherein the connecting pipe (2), the protection device (3) and the induction rod (4) are fixedly arranged at the bottom end of the thermal flow switch main body (1), the connecting pipe (2) is arranged at the upper end of the outer side of the protection device (3), the induction rod (4) is arranged at the inner side of the protection device (3), and the thermal sensor (5) is fixedly embedded in the outer side of the induction rod (4);

the protection device (3) comprises a hollowed-out sleeve (31), a support rod (32), a backing plate (33) and an opening (34), the support rod (32) is fixedly connected to the inner side of the hollowed-out sleeve (31), the backing plate (33) is fixedly connected to the outer side of the support rod (32), the backing plate (33) is attached to the outer side of the induction rod (4), the opening (34) is formed in the outer side of the heat sensor (5) in a close mode, the opening (34) is communicated with the inner side and the outer side of the hollowed-out sleeve (31), and the hollowed-out sleeve (31) is fixedly arranged at the bottom end of the thermal flow switch main body (1).

2. A high-sensitivity thermal flow switch according to claim 1, wherein: the thermal sensors (5) are provided with a plurality of groups.

3. A high-sensitivity thermal flow switch according to claim 1, wherein: the support rods (32) are arranged in multiple groups and are uniformly distributed on the inner side of the hollow sleeve (31).

4. A high sensitivity thermal flow switch according to claim 1 and wherein: and a rubber layer is arranged on the outer side of the backing plate (33).

5. A high-sensitivity thermal flow switch according to claim 1, wherein: the hollow sleeve (31), the support rod (32) and the backing plate (33) are all heat-insulating materials.