CN213180681U - Dry burning prevention alarm device for cooling liquid preheating tank - Google Patents
Dry burning prevention alarm device for cooling liquid preheating tank Download PDFInfo
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- CN213180681U CN213180681U CN202022117629.8U CN202022117629U CN213180681U CN 213180681 U CN213180681 U CN 213180681U CN 202022117629 U CN202022117629 U CN 202022117629U CN 213180681 U CN213180681 U CN 213180681U
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Abstract
The utility model relates to a coolant liquid preheating tank prevents dry combustion method alarm device, including the preheating tank that is equipped with the coolant liquid, install the heating pipe in the preheating tank, still be equipped with liquid level switch and flow switch on the preheating tank, liquid level switch and the liquid level contact in the preheating tank can measure liquid level, and flow switch is fixed in the water inlet department of preheating tank, can measure the flow of coolant liquid, and liquid level switch and flow switch all link to each other with the PLC controller, and the PLC controller can control whether the heating pipe heats. The device of the utility model has simple structure, only one liquid level switch is needed to be installed, the occurrence of dry burning site can be avoided, the unnecessary maintenance cost is greatly saved, the manpower and material resources wasted due to maintenance are also saved, and the effects of cost reduction and efficiency improvement are realized; this device can advance the early warning to and can't make it carry out work under the condition that lacks the coolant liquid, make the better operation of coolant liquid constant temperature equipment, and reduce the fault rate, improved coolant liquid constant temperature equipment's operating rate.
Description
Technical Field
The utility model belongs to the technical field of automobile engine, especially, relate to a coolant liquid preheating tank prevents dry combustion method alarm device.
Background
When an engine test is carried out, the phenomenon that a heating pipe in a preheating tank of a cooling liquid constant temperature device is dry-burned exists. The dry-heating prevention device for the cooling liquid preheating tank can constantly determine that the cooling liquid in the cooling liquid preheating tank of the cooling liquid constant-temperature device is sufficient, and the situations of dry heating and the like cannot occur. Therefore, it is necessary to design a dry-heating prevention device to prevent dry-heating.
The prior art discloses an anti-dry heating electric water heater, which comprises a first heating pipe, a second heating pipe, a temperature sensing device and a controller, wherein the first heating pipe is positioned above the second heating pipe, the temperature sensing device is positioned in the first heating pipe, and the temperature sensing device is electrically connected with the controller.
The prior art also discloses a prevent straight water dispenser that lacks water dry combustion method, which comprises a housin, be provided with the total water inlet that is used for being connected with water supply pipe on the casing, still including being used for detecting whether disconnected water detecting system, the controller of cutting off the water, disconnected water detecting system is including setting up the pressure sensor in total water inlet department, pressure sensor is connected with the controller, the controller is zero hour according to the pressure of pressure sensor feedback, and control switch closes.
The prior art also discloses an anti-dry heating automatic alarm multifunctional electric heating boiled water barrel which comprises an over-temperature fuse, a heating plate and a temperature regulator which are sequentially connected in series, and is characterized in that an anti-dry heating temperature controller is connected in series between the B end of a 220V mains supply and the temperature regulator, and the anti-dry heating temperature controller is attached to the center of the bottom of the heating plate.
However, the above-mentioned dry combustion preventing device in the prior art is complicated in structure and is not suitable for an engine. Meanwhile, when the engine is tested by going up and down the stand each time, the engine needs to be connected with the dry burning prevention device through a physical pipeline, and sometimes, the connection is in a problem or loose knots, so that the loss of cooling liquid in the preheating tank can be caused. In addition, the experimenter does not notice that the heating pipe is burnt out, so that the condition that the engine and corresponding parts are damaged and the like is influenced, and unnecessary property loss is caused. The existing method is only the traditional human observation and cannot realize 24-hour uninterrupted viewing and control.
Disclosure of Invention
An object of the utility model is to provide a coolant liquid preheating tank prevents dry combustion method alarm device to effectively solve and to prevent dry combustion method device to the coolant liquid preheating tank and carry out the problem of control often.
The utility model aims at realizing through the following technical scheme:
an anti-dry heating alarm device for a cooling liquid preheating tank comprises a preheating tank filled with cooling liquid;
an upper pipeline 3 and a lower pipeline 5 are arranged on the preheating tank, a heating pipe is arranged in the preheating tank, and a liquid level switch 1 and a flow switch 4 are also arranged on the preheating tank; the liquid level switch 1 and the flow switch 4 are both connected with a PLC controller; the PLC is in control connection with the heating pipe;
the liquid level switch 1 is fixed at the top of the preheating tank, and the liquid level switch 1 is in contact with the liquid level in the preheating tank and can measure the liquid level height 2;
the flow switch 4 is fixed at the water inlet of the preheating tank and can measure the flow of the cooling liquid.
Furthermore, the heating pipe is arranged at the bottom of the preheating tank and extends into the preheating tank.
Further, the liquid level switch 1 is inserted into the preheating tank from an opening above the preheating tank and is contacted with the liquid level in the preheating tank.
Further, the liquid level switch 1 is fixed above the preheating tank through a bolt.
Further, the flow switch 4 is fixed on a lower pipeline 5 of the preheating tank.
Furthermore, the lower pipe 5 is provided with a hole, and a bolt passes through the hole to fix the flow switch 4 and the lower pipe 5.
Further, the liquid level switch 1 and the flow switch 4 can respectively transmit the liquid level signal and the flow signal to the PLC.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the dry-heating prevention alarm device for the cooling liquid preheating tank is simple in structure, only one liquid level switch needs to be installed, and a program is written on the original Siemens PLC, so that the dry-heating field can be avoided, unnecessary maintenance cost is greatly saved, manpower and material resources wasted due to maintenance are saved, and the effects of cost reduction and efficiency improvement are achieved; this device can advance the early warning to and can't make it carry out work under the condition that lacks the coolant liquid, make the better operation of coolant liquid constant temperature equipment, and reduce the fault rate, improved coolant liquid constant temperature equipment's operating rate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of an anti-dry heating alarm device for a cooling liquid preheating tank;
fig. 2 is a schematic diagram of signal transmission of the PLC controller.
In the figure, 1 is a liquid level switch 2, 3 is a liquid level height, 4 is an upper pipeline, 5 is a flow switch, and 5 is a lower pipeline.
Detailed Description
The invention will be further described with reference to the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in figure 1, the dry-heating prevention alarm device for the cooling liquid preheating tank of the utility model comprises a preheating tank filled with cooling liquid;
the preheating tank is provided with an upper pipeline 3 and a lower pipeline 5, a heating pipe is arranged in the preheating tank, and the heating pipe is arranged at the bottom of the preheating tank and extends into the preheating tank.
The preheating tank is also provided with a liquid level switch 1 and a flow switch 4.
The liquid level switch 1 is fixed on the top of the preheating tank through a bolt, is specifically inserted into the preheating tank from an opening above the preheating tank, is in contact with the liquid level in the preheating tank, and can measure the liquid level height 2.
The flow switch 4 is fixed at the water inlet of the preheating tank, specifically, the flow switch is fixed by a bolt penetrating through an opening on the lower pipeline 5 of the preheating tank, and the flow of the cooling liquid can be measured.
The liquid level switch 1 and the flow switch 4 are both connected with a PLC controller; the liquid level switch 1 and the flow switch 4 can respectively transmit a liquid level signal and a flow signal to the PLC. The PLC is in control connection with the heating pipe and can control whether the heating pipe is heated or not.
The utility model discloses in the PLC controller is among the prior art on-the-spot coolant liquid constant temperature equipment's Siemens 200PLC controller.
The liquid level signal that passes through flow switch 4 transmission is heating signal 2 through PLC controller conversion, and the liquid level signal of liquid level switch 1 transmission is heating signal 1 through PLC controller conversion. When the PLC receives 2 signals, the PLC keeps 20S, sends a heating permission signal, compares the temperature set value with an actual value and judges whether heating is needed or not. When the liquid is deficient, the heating pipe does not work, a starting signal is sent out at the moment, and the liquid level signal is not detected within 1 minute, so that the alarm is given. In the operation process, if the liquid level is low, the liquid level switch 1 cannot detect a liquid level signal, a liquid shortage alarm is displayed on the control panel, and heating is stopped.
Therefore, automatic configuration in all aspects can be realized, the heating pipe cannot be damaged by dry burning, the problems that the engine is damaged by dry burning and the like are solved, the maintenance cost is saved, the maintenance time is greatly shortened, and the working efficiency is improved.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (7)
1. The utility model provides a coolant liquid preheating tank prevents dry combustion method alarm device which characterized in that: comprises a preheating tank filled with cooling liquid;
an upper pipeline (3) and a lower pipeline (5) are arranged on the preheating tank, a heating pipe is arranged in the preheating tank, and a liquid level switch (1) and a flow switch (4) are also arranged on the preheating tank; the liquid level switch (1) and the flow switch (4) are both connected with a PLC controller; the PLC is in control connection with the heating pipe;
the liquid level switch (1) is fixed at the top of the preheating tank, and the liquid level switch (1) is in contact with the liquid level in the preheating tank and can measure the height (2) of the liquid level;
the flow switch (4) is fixed at the water inlet of the preheating tank and can measure the flow of the cooling liquid.
2. The dry-heating prevention alarm device for the cooling liquid preheating tank as claimed in claim 1, wherein: the heating pipe is arranged at the bottom of the preheating tank and extends into the preheating tank.
3. The dry-heating prevention alarm device for the cooling liquid preheating tank as claimed in claim 1, wherein: the liquid level switch (1) is inserted into the preheating tank from an opening above the preheating tank and is in contact with the liquid level in the preheating tank.
4. The dry-heating prevention alarm device for the cooling liquid preheating tank as claimed in claim 3, wherein: the liquid level switch (1) is fixed above the preheating tank through a bolt.
5. The dry-heating prevention alarm device for the cooling liquid preheating tank as claimed in claim 1, wherein: the flow switch (4) is fixed on a lower pipeline (5) of the preheating tank.
6. The dry-heating prevention alarm device for the cooling liquid preheating tank as claimed in claim 5, wherein: the lower pipeline (5) is provided with a hole, and a bolt penetrates through the hole to fix the flow switch (4) and the lower pipeline (5).
7. The dry-heating prevention alarm device for the cooling liquid preheating tank as claimed in claim 1, wherein: the liquid level switch (1) and the flow switch (4) can respectively transmit a liquid level signal and a flow signal to the PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022117629.8U CN213180681U (en) | 2020-09-24 | 2020-09-24 | Dry burning prevention alarm device for cooling liquid preheating tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022117629.8U CN213180681U (en) | 2020-09-24 | 2020-09-24 | Dry burning prevention alarm device for cooling liquid preheating tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213180681U true CN213180681U (en) | 2021-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022117629.8U Active CN213180681U (en) | 2020-09-24 | 2020-09-24 | Dry burning prevention alarm device for cooling liquid preheating tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213180681U (en) |
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2020
- 2020-09-24 CN CN202022117629.8U patent/CN213180681U/en active Active
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