CN111430180A - Liquid expansion type protector and working method thereof - Google Patents
Liquid expansion type protector and working method thereof Download PDFInfo
- Publication number
- CN111430180A CN111430180A CN202010341635.3A CN202010341635A CN111430180A CN 111430180 A CN111430180 A CN 111430180A CN 202010341635 A CN202010341635 A CN 202010341635A CN 111430180 A CN111430180 A CN 111430180A
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- push rod
- reed
- temperature sensing
- trigger
- static contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/60—Means for producing snap action
Abstract
The invention belongs to the technical field of temperature controllers, and particularly relates to a liquid expansion type protector and a working method thereof. This liquid inflation formula protector includes: the temperature sensing device comprises a temperature sensing component, a push rod and at least one trigger component linked with the push rod; the temperature sensing assembly is suitable for pushing the push rod to rise when the acquired temperature reaches a preset value so as to trigger the triggering assembly. According to the liquid expansion type protector and the working method thereof, when the temperature acquired by the temperature sensing assembly reaches the preset value, the push rod moves upwards to trigger the trigger assembly, so that the disconnection of the contact is quickly realized, and the safety performance of the liquid expansion type protector is improved.
Description
Technical Field
The invention belongs to the technical field of temperature controllers, and particularly relates to a liquid expansion type protector and a working method thereof.
Background
The liquid expansion type temperature controller is also called as fluid medium temperature controller, and utilizes the principle of heat expansion and cold contraction of temperature sensing fluid and incompressible liquid to realize automatic regulation of temperature.
However, the existing liquid level temperature controller has the following defects: when the temperature acquired by the temperature sensing assembly is too high, disconnection of the contact cannot be quickly realized, and safety accidents are easily caused.
Disclosure of Invention
The invention aims to provide a liquid expansion type protector and a working method thereof, when the temperature acquired by a temperature sensing assembly reaches a preset value, a trigger assembly is triggered to realize the purpose of power failure.
In order to solve the above technical problem, the present invention provides a liquid expansion type protector, including:
the temperature sensing device comprises a temperature sensing component, a push rod and at least one trigger component linked with the push rod;
the temperature sensing assembly is suitable for pushing the push rod to rise when the acquired temperature reaches a preset value so as to trigger the triggering assembly.
Furthermore, a guide block is fixedly connected to the push rod;
the trigger assembly includes: the reed is linked with the guide block and the static contact piece is positioned below the reed;
the static contact is contacted with the corresponding end of the reed so as to conduct an external circuit;
when the temperature acquired by the temperature sensing assembly reaches a preset value, the push rod drives the reed to rise through the guide block so as to separate the reed from the static contact, namely
The external circuit is broken.
Further, the reed is C-shaped;
the upper fixing wall of the reed is fixedly connected with a first plug terminal connecting column;
the end part of the lower movable wall of the reed is provided with a movable contact;
the middle part of the lower movable wall of the reed is provided with a triggering part which is linked with the guide block;
when the push rod drives the guide block to rise, the guide block is suitable for jacking up the triggering part of the reed so as to separate the movable contact from the static contact.
Further, the static contact is arc-shaped, and the opening of the arc is towards the push rod side;
one end of the static contact piece is provided with a static contact;
the other end of the static contact piece is fixedly connected with a second inserted sheet terminal connecting column;
when the fixed contact is in contact with the movable contact, the second inserting piece terminal connecting column and the first inserting piece terminal connecting column are respectively communicated with an external circuit.
Further, the number of the trigger components is two;
each trigger component is of a half-bag structure taking the push rod as the center;
the two trigger assemblies are clasped to form a mouth-shaped structure, and a gap is reserved between the two trigger assemblies.
Further, the temperature sensing assembly includes: a temperature sensing probe, a capillary tube and a diaphragm capsule;
the temperature sensing probe, the capillary tube and the diaphragm capsule are communicated in sequence to form an inner cavity suitable for being filled with liquid;
the push rod is arranged above the diaphragm capsule;
when the temperature acquired by the temperature sensing probe reaches a preset value, the diaphragm capsule expands upwards to push the push rod to rise so as to separate the movable contact from the fixed contact.
Further, the diaphragm is provided with a diaphragm for sealing liquid.
In another aspect, the present invention further provides a method for operating a fluid expansion type protector, including:
when the temperature acquired by the temperature sensing assembly reaches a preset value, the push rod drives the reed to rise through the guide block so as to separate the reed from the static contact, namely
The external circuit is broken.
Further, the working method is suitable for working by adopting the liquid expansion type protector.
The liquid expansion type protector and the working method thereof have the advantages that when the temperature acquired by the temperature sensing assembly reaches a preset value, the push rod moves upwards to trigger the trigger assembly, so that an external circuit is broken, a power supply is quickly cut off, the temperature is prevented from being too high, and the safety performance of the liquid expansion type protector is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a fluid expansion protector of the present invention;
FIG. 2 is an internal schematic view of the fluid expansion protector of the present invention;
fig. 3 is a partial cross-sectional view of the fluid expansion protector of the present invention.
In the figure:
the temperature sensing assembly comprises a temperature sensing assembly 1, a temperature sensing probe 11, a capillary tube 12, a diaphragm 13, a diaphragm 131, a push rod 2, a guide block 21, a trigger assembly 3, a reed 31, a movable contact 311, a trigger part 312, a static contact 32, a static contact 321, a first plug-in terminal connecting column 33 and a second plug-in terminal connecting column 34.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
FIG. 1 is a schematic view of a fluid expansion protector of the present invention;
FIG. 2 is an internal schematic view of the fluid expansion protector of the present invention;
as shown in fig. 1 and 2, the present embodiment provides a liquid expansion type protector, which includes: the temperature sensing device comprises a temperature sensing component 1, a push rod 2 and at least one trigger component 3 linked with the push rod 2; the temperature sensing assembly 1 is suitable for pushing the push rod 2 to ascend when the acquired temperature reaches a preset value so as to trigger the triggering assembly 3. When the temperature that temperature sensing subassembly 1 obtained reached the default, push rod 2 upwards displacement is in order to initiate trigger assembly 3 for external circuit opens circuit, thereby reaches the cutting off power supply, prevents the high temperature, has improved the security performance of liquid inflation formula protector.
In this embodiment, the push rod 2 is fixedly connected with a guide block 21; the trigger assembly 3 includes: a reed 31 linked with the guide block 21 and a static contact piece 32 positioned below the reed 31; the static contact piece 32 is contacted with the corresponding end of the reed 31 so as to conduct an external circuit; when the temperature acquired by the temperature sensing assembly 1 reaches a preset value, the push rod 2 drives the reed 31 to rise through the guide block 21, so that the reed 31 is separated from the static contact 32, namely, the external circuit is disconnected.
Specifically, when the temperature acquired by the temperature sensing assembly 1 reaches a preset value, the push rod 2 moves upwards, and the guide block 21 props against the reed 31 to move upwards, so that the reed 31 is separated from the static contact 32, and the external circuit is quickly disconnected; the guide block 21 can effectively prevent the reed 31 from shifting when moving, so that the reed 31 cannot be well connected with or disconnected from the static contact 32; good contact with the stationary contact piece 32 is achieved by the elastic force of the spring pieces 31 themselves.
Optionally, the reed 31 is C-shaped; the upper fixing wall of the reed 31 is fixedly connected with a first plug terminal connecting column 33; the end part of the lower movable wall of the spring plate 31 is provided with a movable contact 311; the middle part of the lower movable wall of the reed 31 is provided with a triggering part 312 which is linked with the guide block 21; when the push rod 2 drives the guide block 21 to ascend, the guide block 21 is suitable for jacking up the triggering part 312 of the reed 31 so as to separate the movable contact 311 from the static contact 32. Through setting up this spare part of the spring in the reducible liquid expansion formula protector of C type reed 31, and the reed 31 is less than the power that the spring upwards promoted by push rod 2 through the power that push rod 2 upwards promoted far away to it is more sensitive to make to switch on or break off between reed 31 and the static contact 32, and the utilization ratio in improvement space that C type reed 31's structure can be great simultaneously.
The trigger 312 may be, but is not limited to, a semicircular protrusion.
In this embodiment, the static contact 32 is arc-shaped, and the opening of the arc-shaped is toward the push rod 2; one end of the static contact piece 32 is provided with a static contact 321; the other end of the static contact piece 32 is fixedly connected with a second plug-in terminal connecting column 34; when the fixed contact 321 is in contact with the movable contact 311, the second insert terminal connection column 34 and the first insert terminal connection column 33 are respectively communicated with an external circuit. When the fixed contact 321 is contacted with the movable contact 311, the second inserting piece terminal connection column 34 and the first inserting piece terminal connection column 33 are respectively communicated with an external circuit through corresponding inserting piece terminals.
Optionally, there are two triggering assemblies 3; each trigger component 3 is of a half-bag structure taking the push rod as the center; the two trigger assemblies 3 are clasped to form a mouth-shaped structure, and a gap is reserved between the two trigger assemblies 3. Because the static contact 32 is arc-shaped, the arc-shaped opening faces the push rod 2, the reed 31 is C-shaped, each trigger component 3 is of a half-wrapped structure, and the two trigger components 3 are oppositely arranged by taking the push rod 2 as the center to form an opening-shaped structure, the space can be saved, the utilization rate of the space is improved, the shell of the liquid expansion type protector is miniaturized, the use is more convenient, and the cost is reduced; a certain gap is left between the two trigger assemblies 3 to prevent the two trigger assemblies 3 from contacting to cause short circuit of the circuit.
Wherein, each trigger component 3 is respectively and correspondingly connected with the input end and the output end of the external circuit; through setting up two trigger assembly 3, one trigger assembly 3 is connected with the live wire, and another trigger assembly 3 is connected with the zero line, and with step-by-step line break-make, operation safe and reliable more.
Fig. 3 is a partial cross-sectional view of the fluid expansion protector of the present invention.
As shown in fig. 3, the temperature sensing assembly 1 includes: a temperature-sensitive probe 11, a capillary 12, and a diaphragm capsule 13; the temperature sensing probe 11, the capillary tube 12 and the diaphragm capsule 13 are communicated in sequence to form an inner cavity suitable for filling liquid; the push rod 2 is arranged above the bellows 13; when the temperature acquired by the temperature sensing probe 11 reaches a preset value, the bellows 13 expands upward to push the push rod 2 to rise, so that the movable contact 311 is separated from the stationary contact 321.
The diaphragm capsule 13 is provided with a diaphragm 131 for sealing liquid, and the diaphragm 131 is made of an elastic material and can seal the liquid in a closed inner cavity formed by sequentially communicating the temperature sensing probe 11, the capillary tube 12 and the diaphragm capsule 13 so as to prevent the liquid from leaking in the protector. By utilizing the principle of expansion with heat and contraction with cold of liquid, when the temperature acquired by the temperature sensing probe 11 is too high, the internal pressure of the temperature sensing assembly 1 can be increased to a critical value, the diaphragm 131 can be bulged, and the push rod 2 is pushed to rise, so that the movable contact 311 is separated from the fixed contact 321, and the function of quick power-off is realized.
In this embodiment, when the temperature sensing probe 11, the capillary 12 and the bellows 13 are sequentially connected to form a sealed inner cavity filled with a dedicated liquid, the inner cavity is in a negative pressure state at this time because the atmospheric pressure is greater than the sum of the upward expansion elastic force of the diaphragm 131 and the saturated vapor pressure inside the inner cavity, and the diaphragm 131 is in a concave state. When any one of the temperature sensing probe 11, the capillary 12 and the bellows 13 in the temperature sensing assembly 1 is damaged, the atmosphere directly enters, the atmospheric pressure is smaller than the sum of the upward expansion elastic force of the diaphragm 131 and the saturated vapor pressure in the inner cavity, the diaphragm 131 bounces upwards to push the push rod 2 to ascend, so that the movable contact 311 is separated from the fixed contact 321, the purpose of cutting off the power supply is achieved, and the function of leakage protection is achieved.
Example 2
On the basis of embodiment 1, this embodiment 2 provides an operating method of a liquid expansion type protector, including: when the temperature acquired by the temperature sensing assembly 1 reaches a preset value, the push rod 2 drives the reed 31 to rise through the guide block 21, so that the reed 31 is separated from the static contact 32, namely, the external circuit is disconnected.
The specific structure and working principle of the liquid expansion type protector mentioned in this embodiment 2 are described in embodiment 1, and are not described herein again.
In summary, according to the liquid expansion type protector and the working method thereof of the present invention, when the temperature obtained by the temperature sensing probe 11 is too high, the internal pressure of the temperature sensing assembly 1 increases to a critical value, and the diaphragm 131 bulges to push the push rod 2 to rise, so as to separate the movable contact 311 from the stationary contact 321, thereby realizing the function of fast power-off, preventing the temperature from being too high, and improving the safety performance of the liquid expansion type protector; when the temperature sensing assembly 1 is damaged, the atmosphere directly enters a closed inner cavity formed by sequentially communicating the temperature sensing probe 11, the capillary tube 12 and the diaphragm box 13, the atmospheric pressure is smaller than the sum of the upward expansion elastic force of the diaphragm 131 and the saturated steam pressure in the inner cavity, the diaphragm 131 bounces upwards to push the push rod 2 to ascend, so that the reed 31 is separated from the static contact 32, the purpose of cutting off the power supply is achieved, and the function of leakage protection is realized; the C-shaped reed 31 can reduce the part of a spring in the liquid expansion type protector, and the upward pushing force of the reed 31 through the push rod 2 is far less than the upward pushing force of the spring by the push rod 2, so that the reed 31 and the static contact 32 are more sensitive to be switched on or switched off; because static contact 32 is the arc, and reed 31 is the C type, and two trigger assembly 3 use push rod 2 to set up relatively as the center, form mouthful column structure, can practice thrift the space, and improved the utilization ratio in space for liquid expansion formula protector shell is miniaturized, and it is more convenient to use, and the cost is reduced.
The components selected for use in the present application (components not illustrated for specific structures) are all common standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A fluid expansion type protector, comprising:
the temperature sensing device comprises a temperature sensing component, a push rod and at least one trigger component linked with the push rod;
the temperature sensing assembly is suitable for pushing the push rod to rise when the acquired temperature reaches a preset value so as to trigger the triggering assembly.
2. The liquid expansion protector of claim 1,
the push rod is fixedly connected with a guide block;
the trigger assembly includes: the reed is linked with the guide block and the static contact piece is positioned below the reed;
the static contact is contacted with the corresponding end of the reed so as to conduct an external circuit;
when the temperature obtained by the temperature sensing component reaches a preset value, the push rod drives the reed to rise through the guide block so as to separate the reed from the static contact, namely
The external circuit is broken.
3. The liquid expansion protector of claim 2,
the reed is C-shaped;
the upper fixing wall of the reed is fixedly connected with a first plug terminal connecting column;
the end part of the lower movable wall of the reed is provided with a movable contact;
the middle part of the lower movable wall of the reed is provided with a triggering part which is linked with the guide block;
when the push rod drives the guide block to rise, the guide block is suitable for jacking up the triggering part of the reed so as to separate the movable contact from the static contact.
4. The liquid expansion protector of claim 3,
the static contact is arc-shaped, and the opening of the arc is towards the push rod side;
one end of the static contact piece is provided with a static contact;
the other end of the static contact piece is fixedly connected with a second inserted sheet terminal connecting column;
when the fixed contact is in contact with the movable contact, the second inserting piece terminal connecting column and the first inserting piece terminal connecting column are respectively communicated with an external circuit.
5. The liquid expansion protector of claim 4,
the number of the trigger components is two;
each trigger component is of a half-bag structure taking the push rod as the center;
the two trigger assemblies are clasped to form a mouth-shaped structure, and a gap is reserved between the two trigger assemblies.
6. The liquid expansion protector of claim 5,
the temperature sensing assembly includes: a temperature sensing probe, a capillary tube and a diaphragm capsule;
the temperature sensing probe, the capillary tube and the diaphragm capsule are communicated in sequence to form an inner cavity suitable for being filled with liquid;
the push rod is arranged above the diaphragm capsule;
when the temperature acquired by the temperature sensing probe reaches a preset value, the diaphragm capsule expands upwards to push the push rod to rise so as to separate the movable contact from the fixed contact.
7. The liquid expansion protector of claim 6,
the diaphragm capsule is provided with a diaphragm for sealing and storing liquid.
8. A method of operating a fluid expansion protector, comprising:
when the temperature obtained by the temperature sensing component reaches a preset value, the push rod drives the reed to rise through the guide block so as to separate the reed from the static contact, namely
The external circuit is broken.
9. The operating method according to claim 8,
the method of operation is adapted to operate with a fluid expansion protector according to any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341635.3A CN111430180A (en) | 2020-04-27 | 2020-04-27 | Liquid expansion type protector and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341635.3A CN111430180A (en) | 2020-04-27 | 2020-04-27 | Liquid expansion type protector and working method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111430180A true CN111430180A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010341635.3A Pending CN111430180A (en) | 2020-04-27 | 2020-04-27 | Liquid expansion type protector and working method thereof |
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| CN (1) | CN111430180A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116995614A (en) * | 2023-09-27 | 2023-11-03 | 广东电网有限责任公司肇庆供电局 | Outdoor termination of low pressure photovoltaic |
-
2020
- 2020-04-27 CN CN202010341635.3A patent/CN111430180A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116995614A (en) * | 2023-09-27 | 2023-11-03 | 广东电网有限责任公司肇庆供电局 | Outdoor termination of low pressure photovoltaic |
| CN116995614B (en) * | 2023-09-27 | 2024-01-26 | 广东电网有限责任公司肇庆供电局 | Outdoor termination of low pressure photovoltaic |
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