Sizing cooling bed feeding limit grating energy-saving system and method

Abstract

The sizing cooling bed feeding limit grating energy saving system comprises a grating, a PLC, a compressed air pipe, a control cable and an electromagnetic valve, the compressed air pipe is installed on a compressed air pipeline and used for spraying compressed air to refrigerate the grating, and the electromagnetic valve is installed on the compressed air pipeline and used for controlling opening and closing of the compressed air pipe. The electromagnetic valve is connected with a PLC through a control cable, the control cable is used for transmitting control signals, the PLC is used for controlling the electromagnetic valve to be switched on and switched off, the high-temperature sensor and the compressed air pipe are installed on the two sides of the grating respectively, and the high-temperature sensor and the compressed air pipe are oppositely arranged. Real-time temperature detection is carried out through the high-temperature temperature sensor, then automatic control or manual control is carried out on the PLC, the heat dissipation problem of the grating can be solved, meanwhile, stopping is carried out when heat dissipation of the grating is not needed, and the production quality and the production efficiency can be kept.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe processing and manufacturing, in particular to a sizing cooling bed loading limit grating energy-saving system and method. Background Art

[0002] The cooling bed is a work surface for effectively cooling rolled products (rebar, round steel, steel pipe, etc.) in the metallurgical steel rolling industry. The cooling bed consists of a mechanical transmission system, a water cooling system, a cooling bed work surface, a fixed bracket, etc. The cooling beds mainly include tooth extraction cooling beds, rack stepping cooling beds, claw cooling beds, carrier chain cooling beds, and roller cooling beds.

[0003] The cooling bed is one of the indispensable auxiliary equipments in small and medium-sized bar workshops. Its function is to transport and unload the bars rolled by the rolling mill into multiple lengths by the flying shear, cool them down from 900℃ to 100~300℃, and then collect them into groups by the unloading device of the cooling bed and send them to the output roller, and then send them to the cold shear to cut them into fixed length products by the output roller. The design quality and installation accuracy of the cooling bed directly determine the final quality of the product.

[0004] An optical device composed of a large number of parallel slits of equal width and spacing is called a grating. A commonly used grating is made by engraving a large number of parallel grooves on a glass sheet. The grooves are opaque parts, and the smooth part between two grooves can transmit light, which is equivalent to a slit. A refined grating has thousands or even tens of thousands of grooves within a width of 1 cm. This kind of grating that uses the diffraction of transmitted light is called a transmission grating. There is also a grating that uses the diffraction of reflected light between two grooves. For example, if many parallel grooves are engraved on a surface coated with a metal layer, the smooth metal surface between the two grooves can reflect light. This kind of grating is called a reflection grating.

[0005] At present, gratings need to be installed at the extreme positions of the sizing cooling bed during the production process. However, the sizing cooling bed feeding environment during the production process is relatively harsh, with high ambient temperature and heavy dust, which is not conducive to the heat dissipation of the grating body and can easily cause damage to the grating, affecting production quality and efficiency. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and propose a sizing cooling bed loading limit grating energy-saving system and method, which can solve the problem of grating heat dissipation and stop when the grating does not need heat dissipation, which is conducive to maintaining production quality and production efficiency.

[0007] The present invention solves the technical problem by adopting the following technical solutions:

[0008] The sizing cooling bed loading limit grating energy-saving system includes a grating, a PLC, a compressed air pipe, a control cable and a solenoid valve, wherein the compressed air pipe is installed on the compressed air pipeline and is used to spray compressed air to cool the grating. The solenoid valve is installed on the compressed air pipeline and is used to control the switch of the compressed air pipe. The solenoid valve is connected to the PLC through a control cable, and the control cable is used to transmit a control signal. The PLC is used to control the opening and closing of the solenoid valve.

[0009] Moreover, the compressed air pipe is installed on the side of the grating along the feeding direction, the air outlet direction of the compressed air pipe faces the grating, and the air outlet direction of the compressed air pipe is opposite to the feeding direction.

[0010] Moreover, the compressed air pipe includes a main compressed air pipe installed in the middle, and auxiliary compressed air pipes installed on the upper and lower sides. The main compressed air pipe remains parallel to the grating, and the air outlet direction of the auxiliary compressed air pipe installed on the upper side is inclined downward toward the grating, and the air outlet direction of the auxiliary compressed air pipe installed on the lower side is inclined upward toward the grating.

[0011] Moreover, it also includes a high-temperature temperature sensor, wherein the high-temperature temperature sensor and the compressed air pipe are respectively installed on both sides of the grating, and the high-temperature temperature sensor and the compressed air pipe are arranged opposite to each other.

[0012] Moreover, the high temperature sensor is connected to the PLC, and the PLC is used to perform control according to the signal of the high temperature sensor.

[0013] An energy-saving method for a sizing cooling bed material limit grating energy-saving system comprises the following steps:

[0014] Step 1: Set the temperature threshold of the high temperature sensor, and load the sizing cooling bed;

[0015] Step 2: During the working process, the high temperature sensor detects the temperature data in real time and transmits the temperature data to the PLC;

[0016] Step 3, the PLC calculates the received data and makes a judgment based on the working mode of the PLC. If the working mode of the PLC is automatic, proceed to step 4; otherwise, if the working mode of the PLC is manual, proceed to step 5;

[0017] Step 4: PLC compares the real-time monitored temperature data with the temperature threshold, and controls the switch of the solenoid valve and the switch of the compressed air pipe to cool the grating;

[0018] Step 5: PLC switches the solenoid valve according to the staff's input and controls the switch of the compressed air pipe to cool the grating.

[0019] Moreover, the temperature threshold in step 1 includes a primary temperature threshold, a secondary temperature threshold and a tertiary temperature threshold, wherein the primary temperature threshold is smaller than the secondary temperature threshold, and the secondary temperature threshold is smaller than the tertiary temperature threshold.

[0020] Furthermore, the step 4 comprises the following steps:

[0021] Step 4.1, PLC compares the real-time monitoring temperature data with the temperature threshold. If the real-time monitoring temperature data is less than the first-level temperature threshold, proceed to step 4.2. If the real-time monitoring temperature data is greater than or equal to the first-level temperature threshold and less than the second-level temperature threshold, proceed to step 4.3. If the real-time monitoring temperature data is greater than or equal to the second-level temperature threshold and less than the third-level temperature threshold, proceed to step 4.4. If the real-time monitoring temperature data is greater than or equal to the third-level temperature threshold, proceed to step 4.5.

[0022] Step 4.2, the PLC sends a control command to the solenoid valve through the control cable, closes the solenoid valve, and then closes the compressed air pipe, and returns to step 2;

[0023] Step 4.3, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe to cool the grating, and returns to step 2;

[0024] Step 4.4, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe and the auxiliary compressed air pipe installed on the upper side to cool the grating, and returns to step 2;

[0025] Step 4.5, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe and the auxiliary compressed air pipes installed on the upper and lower sides to cool the grating, and returns to step 2.

[0026] Moreover, the specific implementation method of step 5 is: the staff controls the PLC according to the production demand, switches the solenoid valve, and then switches the compressed air pipe.

[0027] The advantages and positive effects of the present invention are:

[0028] The present invention includes a grating, a PLC, a compressed air pipe, a control cable and a solenoid valve, wherein the compressed air pipe is installed on the compressed air pipeline and is used to spray compressed air to cool the grating, the solenoid valve is installed on the compressed air pipeline, the solenoid valve is used to control the switch of the compressed air pipe, the solenoid valve is connected to the PLC through a control cable, the control cable is used to transmit a control signal, the PLC is used to control the opening and closing of the solenoid valve, and also includes a high-temperature temperature sensor, the high-temperature temperature sensor and the compressed air pipe are respectively installed on both sides of the grating, and the high-temperature temperature sensor and the compressed air pipe are arranged opposite to each other. The invention performs real-time temperature detection through the high-temperature temperature sensor, and then automatically controls or manually controls the PLC, which can solve the problem of heat dissipation of the grating, and at the same time stops when the grating does not need to dissipate heat, which is conducive to maintaining production quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the sizing cooling bed material limit grating energy-saving system of the present invention;

[0030] Figure 2 It is a schematic diagram of a PLC ladder diagram according to an embodiment of the present invention.

[0031] Description of symbols

[0032] 1- Grating, 2-PLC, 3- Compressed air pipe, 3.1- Main compressed air pipe, 3.2- Auxiliary compressed air pipe installed on the upper side, 3.3- Auxiliary compressed air pipe installed on the lower side, 4- Control cable, 5- Solenoid valve, 6- High temperature sensor. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings.

[0034] Sizing cooling bed material limit grating energy saving system, such as Figure 1 As shown, it includes a grating 1, a PLC 2, a compressed air pipe 3, a control cable 4 and a solenoid valve 5, wherein the compressed air pipe is installed on the compressed air pipeline and is used to spray compressed air to cool the grating. The solenoid valve is installed on the compressed air pipeline and is used to control the switch of the compressed air pipe. The solenoid valve is connected to the PLC through a control cable, and the control cable is used to transmit a control signal. The PLC is used to control the opening and closing of the solenoid valve.

[0035] The compressed air pipe is installed on the side of the grating along the feeding direction, and the air outlet direction of the compressed air pipe is toward the grating, and the air outlet direction of the compressed air pipe is opposite to the feeding direction. Figure 1 As shown, the temperature will increase with the feeding direction, so setting the outlet direction of the compressed air pipe opposite to the feeding direction can minimize the temperature of the grating.

[0036] The compressed air pipe includes a main compressed air pipe 3.1 installed in the middle, and auxiliary compressed air pipes installed on the upper and lower sides. The main compressed air pipe is kept parallel to the grating, the air outlet direction of the auxiliary compressed air pipe 3.2 installed on the upper side is inclined downward toward the grating, and the air outlet direction of the auxiliary compressed air pipe 3.3 installed on the lower side is inclined upward toward the grating.

[0037] Due to the principle that cold air will descend and hot air will rise, an auxiliary compressed air pipe is installed on the upper side. When the auxiliary compressed air pipe installed on the upper side cools the grating, the exhausted cold air will blow onto the grating. At the same time, as the cold air descends, the exhausted cold air will descend, causing the grating to be further cooled. At the same time, when the temperature is too high, the cold air may turn into hot air during the descending process. Therefore, an auxiliary compressed air pipe is installed on the lower side. When the auxiliary compressed air pipe installed on the upper side cools the grating, the exhausted cold air will blow onto the grating, so that the cold air discharged by the auxiliary compressed air pipe installed on the upper side will not heat up too quickly, so the discharged cold air will descend, causing the grating to be further cooled.

[0038] If the real-time detected temperature data is greater than or equal to the first-level temperature threshold and less than the second-level temperature threshold, open the main compressed air pipe for cooling. If the real-time monitored temperature data is greater than or equal to the second-level temperature threshold and less than the third-level temperature threshold, open the main compressed air pipe and the auxiliary compressed air pipe installed on the upper side for cooling. If the real-time detected temperature data is greater than or equal to the third-level temperature threshold, open the main compressed air pipe and the auxiliary compressed air pipes installed on the upper and lower sides for cooling.

[0039] It includes a high temperature sensor 6, wherein the high temperature sensor and the compressed air pipe are respectively installed on both sides of the grating, and the high temperature sensor and the compressed air pipe are arranged opposite to each other. The high temperature sensor is connected to the PLC, and the PLC is used to control according to the signal of the high temperature sensor.

[0040] An energy-saving method for a sizing cooling bed material limit grating energy-saving system comprises the following steps:

[0041] Step 1: Set the temperature threshold of the high temperature sensor and load the sizing cooling bed.

[0042] The temperature threshold includes a primary temperature threshold, a secondary temperature threshold and a tertiary temperature threshold, wherein the primary temperature threshold is smaller than the secondary temperature threshold, and the secondary temperature threshold is smaller than the tertiary temperature threshold.

[0043] Step 2: During the working process, the high temperature sensor detects the temperature data in real time and transmits the temperature data to the PLC.

[0044] Step 3, the PLC calculates the received data and makes a judgment based on the working mode of the PLC. If the working mode of the PLC is automatic, proceed to step 4; otherwise, if the working mode of the PLC is manual, proceed to step 5.

[0045] Step 4: PLC compares the real-time monitored temperature data with the temperature threshold, and controls the switch of the solenoid valve and the switch of the compressed air pipe to cool the grating.

[0046] Step 4 includes the following steps:

[0047] Step 4.1, PLC compares the real-time monitoring temperature data with the temperature threshold. If the real-time monitoring temperature data is less than the first-level temperature threshold, proceed to step 4.2; if the real-time monitoring temperature data is greater than or equal to the first-level temperature threshold and less than the second-level temperature threshold, proceed to step 4.3; if the real-time monitoring temperature data is greater than or equal to the second-level temperature threshold and less than the third-level temperature threshold, proceed to step 4.4; if the real-time monitoring temperature data is greater than or equal to the third-level temperature threshold, proceed to step 4.5.

[0048] Step 4.2, PLC sends a control command to the solenoid valve through the control cable, closes the solenoid valve, and then closes the compressed air pipe, and returns to step 2.

[0049] Step 4.3, PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe to cool the grating, and returns to step 2.

[0050] Step 4.4, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe and the auxiliary compressed air pipe installed on the upper side to cool the grating, and returns to step 2.

[0051] Step 4.5, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe and the auxiliary compressed air pipes installed on the upper and lower sides to cool the grating, and returns to step 2.

[0052] Step 5: PLC switches the solenoid valve according to the staff's input and controls the switch of the compressed air pipe to cool the grating.

[0053] The specific implementation method of step 5 is: the staff controls the PLC according to production needs, switches the solenoid valve, and then switches the compressed air pipe.

[0054] According to the above-mentioned sizing cooling bed material limit grating energy-saving system and method, experiments were conducted to verify the effect of the present invention.

[0055] like Figure 2As shown, a new electronic control system is added to the compressed air pipeline. First, a solenoid valve is installed in a suitable position. At the same time, a 24V control cable is laid between the PLC and the solenoid valve. One end is connected to the PLC module and the other end is connected to the solenoid valve head. A control program is written. The current condition is that when the perforation area is shut down and the furnace is locked, the solenoid valve loses power and closes. Otherwise, the solenoid valve is powered on and opened, and compressed air cools the bearing.

[0056] Through experiments, it is proved that the present invention can solve the problem of grating heat dissipation, and at the same time, the grating stops when heat dissipation is not needed, which is beneficial to the maintenance of production quality and production efficiency.

[0057] The present invention includes a grating, a PLC, a compressed air pipe, a control cable and a solenoid valve, wherein the compressed air pipe is installed on the compressed air pipeline and is used to spray compressed air to cool the grating, the solenoid valve is installed on the compressed air pipeline, the solenoid valve is used to control the switch of the compressed air pipe, the solenoid valve is connected to the PLC through a control cable, the control cable is used to transmit a control signal, the PLC is used to control the opening and closing of the solenoid valve, and also includes a high-temperature temperature sensor, the high-temperature temperature sensor and the compressed air pipe are respectively installed on both sides of the grating, and the high-temperature temperature sensor and the compressed air pipe are arranged opposite to each other. The invention performs real-time temperature detection through the high-temperature temperature sensor, and then automatically controls or manually controls the PLC, which can solve the problem of heat dissipation of the grating, and at the same time stops when the grating does not need to dissipate heat, which is conducive to maintaining production quality and production efficiency.

[0058] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention includes but is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. Sizing cooling bed loading limit grating energy saving system, characterized by: It includes a grating, a PLC, a compressed air pipe, a control cable and a solenoid valve, wherein the compressed air pipe is installed on the compressed air pipeline and is used to spray compressed air to cool the grating. The solenoid valve is installed on the compressed air pipeline and is used to control the switch of the compressed air pipe. The solenoid valve is connected to the PLC through a control cable, the control cable is used to transmit control signals, and the PLC is used to control the opening and closing of the solenoid valve.

2. The sizing cooling bed material limit grating energy saving system according to claim 1 is characterized in that: The compressed air pipe is installed on the side of the grating along the feeding direction, the air outlet direction of the compressed air pipe faces the grating, and the air outlet direction of the compressed air pipe is opposite to the feeding direction.

3. The sizing cooling bed material limit grating energy saving system according to claim 2 is characterized in that: The compressed air pipe includes a main compressed air pipe installed in the middle, and auxiliary compressed air pipes installed on the upper and lower sides. The main compressed air pipe remains parallel to the grating, the air outlet direction of the auxiliary compressed air pipe installed on the upper side is inclined downward toward the grating, and the air outlet direction of the auxiliary compressed air pipe installed on the lower side is inclined upward toward the grating.

4. The sizing cooling bed material limit grating energy saving system according to claim 2 is characterized in that: It also includes a high-temperature temperature sensor, wherein the high-temperature temperature sensor and the compressed air pipe are respectively installed on both sides of the grating, and the high-temperature temperature sensor and the compressed air pipe are arranged opposite to each other.

5. The sizing cooling bed material limit grating energy saving system according to claim 3 is characterized in that: The high temperature sensor is connected to the PLC, and the PLC is used to perform control according to the signal of the high temperature sensor.

6. An energy-saving method for a sizing cooling bed material limit grating energy-saving system according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1, set the temperature threshold of the high temperature sensor, and the sizing cooling bed performs the loading work; Step 2: During the working process, the high temperature sensor detects the temperature data in real time and transmits the temperature data to the PLC; Step 3, the PLC calculates the received data and makes a judgment based on the working mode of the PLC. If the working mode of the PLC is automatic, proceed to step 4; otherwise, if the working mode of the PLC is manual, proceed to step 5; Step 4: PLC compares the real-time monitored temperature data with the temperature threshold, and controls the switch of the solenoid valve and the switch of the compressed air pipe to cool the grating; Step 5: PLC switches the solenoid valve according to the staff's input and controls the switch of the compressed air pipe to cool the grating.

7. The sizing cooling bed material limit grating energy-saving system and method according to claim 1, characterized in that: The temperature threshold in step 1 includes a primary temperature threshold, a secondary temperature threshold and a tertiary temperature threshold, wherein the primary temperature threshold is smaller than the secondary temperature threshold, and the secondary temperature threshold is smaller than the tertiary temperature threshold.

8. The sizing cooling bed material limit grating energy-saving system and method according to claim 1, characterized in that: The step 4 comprises the following steps: Step 4.1, PLC compares the real-time monitoring temperature data with the temperature threshold. If the real-time monitoring temperature data is less than the first-level temperature threshold, proceed to step 4.

2. If the real-time monitoring temperature data is greater than or equal to the first-level temperature threshold and less than the second-level temperature threshold, proceed to step 4.

3. If the real-time monitoring temperature data is greater than or equal to the second-level temperature threshold and less than the third-level temperature threshold, proceed to step 4.

4. If the real-time monitoring temperature data is greater than or equal to the third-level temperature threshold, proceed to step 4.

5. Step 4.2, PLC sends a control command to the solenoid valve through the control cable, closes the solenoid valve, and then closes the compressed air pipe, and returns to step 2; Step 4.3, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe to cool the grating, and returns to step 2; Step 4.4, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe and the auxiliary compressed air pipe installed on the upper side to cool the grating, and returns to step 2; Step 4.5, the PLC sends a control command to the solenoid valve through the control cable, opens the solenoid valve, and then opens the main compressed air pipe and the auxiliary compressed air pipes installed on the upper and lower sides to cool the grating, and returns to step 2.

9. The sizing cooling bed material limit grating energy-saving system and method according to claim 1, characterized in that: The specific implementation method of step 5 is: the staff controls the PLC according to the production demand, switches the solenoid valve, and then switches the compressed air pipe.

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