CN212615255U - Compressor and temperature protection device thereof - Google Patents
Compressor and temperature protection device thereof Download PDFInfo
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- CN212615255U CN212615255U CN202021225747.4U CN202021225747U CN212615255U CN 212615255 U CN212615255 U CN 212615255U CN 202021225747 U CN202021225747 U CN 202021225747U CN 212615255 U CN212615255 U CN 212615255U
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Abstract
The utility model discloses a compressor and temperature protection device thereof. The temperature protection device includes: the mechanical temperature switch is arranged on an oil-gas barrel of the compressor and senses the temperature inside the oil-gas barrel, the mechanical temperature switch is electrically connected with a power supply of a compressor control loop and a power supply of a controller through a temperature switch control loop, and the controller is electrically connected with a main motor of the compressor; wherein the mechanical temperature switch can be turned off to de-energize the control circuit and stop the main motor when sensing that the temperature inside the oil and gas tank rises to a temperature switch actuation value; and the mechanical temperature switch can be reset to electrify the control loop when sensing that the temperature inside the oil gas barrel drops to a temperature switch return value. The utility model discloses can prevent the inside high temperature of oil gas bucket and burn even, also can protect the air compressor machine when the temperature protection is not opened to the organism anterior segment, reduce the loss that the accident caused.
Description
Technical Field
The utility model relates to a compressor technique especially relates to a compressor and temperature protection device thereof.
Background
The conventional air compressor usually has a protection for the exhaust temperature of the engine body, for example, the exhaust temperature is detected by an exhaust port temperature sensor, and when the exhaust port temperature sensor detects that the exhaust temperature T1 reaches a temperature protection set point T1, the controller alarm is triggered and the engine is shut down to protect the equipment.
When the unit is operated, the temperature inside the oil gas barrel is second to the temperature of the engine body. Moreover, oil fine may have a burning risk due to static electricity or other reasons, and when the temperature inside the oil gas barrel rises sharply, for example, rises rapidly to exceed the exhaust temperature T1, but the exhaust temperature T1 does not reach the temperature protection set value T1, the engine exhaust temperature protection is not started, and the unit continues to operate, thereby causing a greater loss.
In addition, the existing air compressor also has the problems of protection failure and the like caused by detection delay of a controller or other reasons.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a compressor and a temperature protection device thereof, which are used to prevent oil from being thin or high temperature inside an oil-gas barrel from being burned, and can protect the compressor when the front section of the machine body is not opened for temperature protection, thereby reducing the loss caused by accidents.
In order to achieve the above object, the present invention provides a temperature protection device for a compressor, which includes: the mechanical temperature switch is arranged on an oil-gas barrel of the compressor and senses the temperature inside the oil-gas barrel, the mechanical temperature switch is electrically connected with a power supply of a compressor control loop and a power supply of a controller through a temperature switch control loop, and the controller is electrically connected with a main motor of the compressor; wherein the mechanical temperature switch can be turned off to de-energize the compressor control circuit and stop the main motor when sensing that the temperature inside the oil and gas drum rises to a temperature switch actuation value; and the mechanical temperature switch can be reset to energize the compressor control loop when sensing that the temperature inside the oil and gas barrel drops to a temperature switch return value.
In an embodiment of the present invention, the mechanical temperature switch is installed on the top cover or the side of the oil-gas barrel.
In an embodiment of the present invention, the mechanical temperature switch is a bimetal temperature switch.
In an embodiment of the present invention, the temperature switch control circuit includes: the first branch circuit comprises a mechanical temperature switch and a first auxiliary relay which are connected in series, one end of the first branch circuit is electrically connected to a first power supply contact of the power supply of the compressor control loop and between first input contacts of the controller, and the other end of the first branch circuit is electrically connected to a second power supply contact of the power supply of the compressor control loop.
In an embodiment of the present invention, the temperature switch control circuit further includes: a second branch circuit comprising a second auxiliary relay and a third auxiliary relay connected in series, wherein one end of the second branch circuit is electrically connected between a first power supply contact of the power supply of the compressor control circuit and a first input contact of the controller, and the other end of the second branch circuit is electrically connected to a second power supply contact of the power supply of the compressor control circuit; a third branch circuit comprising a fourth auxiliary relay and a main contactor connected in series, wherein one end of the third branch circuit is electrically connected to the first power contact of the power supply of the compressor control loop and between the first input contacts of the controller, and the other end of the third branch circuit is electrically connected to the second branch circuit of the second auxiliary relay and an intermediate node between the third auxiliary relays.
In an embodiment of the present invention, the temperature switch control circuit further includes: and one end of the first branch, one end of the second branch and one end of the third branch are electrically connected to the first input contact of the controller through the fifth auxiliary relay.
In an embodiment of the present invention, the temperature switch control circuit further includes: and one end of the first branch, one end of the second branch and one end of the third branch are electrically connected to the first power supply contact of the power supply of the compressor control loop through the emergency stop button.
In an embodiment of the present invention, the temperature protection device of the compressor further includes: and the exhaust port temperature sensor is arranged at an exhaust port of the compressor body and used for detecting an exhaust temperature, and the exhaust port temperature sensor is electrically connected with the controller, wherein the exhaust port temperature sensor triggers the controller to alarm and stop the main motor when the exhaust temperature reaches a temperature protection set value.
In an embodiment of the present invention, the temperature protection setting value is greater than the temperature switch action value.
In order to achieve the above object, the present invention also provides a compressor, which includes: the temperature protection device of the compressor is described above.
The utility model discloses an increase mechanical type temperature switch on the oil gas bucket of compressor, can prevent effectively that oil is thin or the inside high temperature of oil gas bucket from burning even, also can protect the air compressor machine when the temperature protection is not opened to the organism anterior segment, reduce the loss that the accident caused.
The utility model discloses an increase mechanical type temperature switch on the oil gas bucket, can play duplicate protection function with the gas vent temperature sensor of organism together. When the temperature in the oil gas barrel reaches an action value, the power supply of a compressor control loop can be directly cut off through the mechanical temperature switch, so that the motor stops running to protect the compressor unit.
The utility model discloses a mechanical type temperature switch can also avoid detecting the protection inefficacy that time delay or other reasons lead to because of the controller to can be many the operation factor of safety in order to improve the compressor together.
The above description will be described in detail by embodiments, and further explanation will be provided for the technical solution of the present invention.
Drawings
In order to make the aforementioned and other objects, features, advantages and embodiments of the invention more comprehensible, the following description is given:
fig. 1 is a schematic structural diagram of a compressor and a temperature protection device thereof according to the present invention;
fig. 2 is a schematic structural diagram of a temperature switch control circuit according to the present invention;
fig. 3 is an electrical schematic diagram between the controller and the controller power supply of the compressor of the present invention;
fig. 4 is an electrical schematic diagram of the compressor according to the present invention between the controller and the controller power supply, contactor, fan, air intake valve, etc.
Detailed Description
For a better understanding and completeness of the description of the present invention, reference is made to the appended drawings and various embodiments described below, in which like reference numerals refer to the same or similar elements. In other instances, well-known elements and steps have not been described in detail so as not to unnecessarily obscure the present invention. In addition, for the sake of simplicity, some conventional structures and elements are shown in the drawings in a simple schematic manner.
As shown in fig. 1 and 2, the compressor 100 of the present invention includes an organic body 103 and an oil gas tank 107. Wherein air enters the body 103 from the air inlet 128 via the air cleaner 101 and the air intake valve 102. The machine body 103 is in driving connection with a main motor 105 through a coupling 104. The oil-gas barrel 107 is internally provided with an oil-fine separator 108, the oil-gas barrel 107 can be further provided with a safety valve 109, an oil level observation mirror 110, an oil relief valve 118, a heater 123, a pressure sensor 126, a pressure gauge 127 and the like, and the pressure sensor 126 on the oil-gas barrel 107 can be used for detecting the pressure of the oil-gas barrel. And, still include an oil-gas mixture line OAP, a body bearing lubrication oil circuit ABLP, a main oil pipeline MOP, and an oil return pipeline ORP between organism 103 and oil gas bucket 107, wherein still can be provided with expansion joint 106 and exhaust port temperature sensor 129 on the oil-gas mixture line OAP, still can be provided with bypass oil filter 117 on the body bearing lubrication oil circuit ABLP, still can be provided with temperature-sensing valve 115 and oil cooler 114 on the main oil pipeline MOP, still can be provided with check valve 111 on the oil return pipeline ORP. A control bleed line CDP is also included between the barrel 107 and the inlet valve 102. An air line AP is disposed between the oil gas tank 107 and the compressed air outlet 122, and may include a pressure maintaining valve 112, a pressure sensor 126, and an after cooler 113, wherein the pressure sensor 126 on the air line AP may be used to detect the exhaust pressure. Wherein, the aftercooler 113 can also be provided with an oil relief valve 118. The after cooler 113 and the oil cooler 114 can be cooled by the water pipe WP, and for example, a cooling passage can be formed between the cooling water inlet 120, the after cooler 113, the oil cooler 114, and the cooling water outlet 121 by the water pipe WP. The compressor 100 may also include a cooling fan 119. The exhaust port 122 of the compressor 100 may further be communicated to an external compressed air outlet 122 via an air line AP and a water separator 124 disposed on the air line AP.
As shown in fig. 1, the present invention particularly provides a temperature protection device, i.e. a mechanical temperature switch 125, which is installed on the oil gas barrel 107, for example, on the top cover or the side of the oil gas barrel 107, and is used for sensing the temperature inside the oil gas barrel 107, on the compressor 100. The mechanical temperature switch 125, which may be, for example, a bimetallic temperature switch, is electrically connected to the power supply of the compressor control loop (not shown), which may be, for example, a 220V ac power supply, and the power supply of the controller (not shown), which is also electrically connected to the main motor 105 of the compressor, via the temperature switch control loop TSCC. Wherein the mechanical temperature switch 125 can be turned off when sensing that the temperature T2 inside the oil gas barrel 107 rises to a temperature switch action value T2, so as to de-energize the compressor control circuit and stop the main motor 105; and the mechanical temperature switch 125 can be reset to energize the compressor control circuit upon sensing that the temperature t2 inside the oil and gas barrel 107 has dropped to a temperature switch return value.
Referring to fig. 1 and 2 together, the TSCC of the present invention includes, for example, a first branch 61, which may include the mechanical temperature switch 125 and a first auxiliary relay J2-1 connected in series, one end of the first branch 61 is electrically connected between the first power contact R1 of the power supply of the compressor control circuit and the first input contact 18 of the controller, and the other end of the first branch 61 is electrically connected to the second power contact R2 of the power supply of the compressor control circuit.
Preferably, the temperature switch control loop TSCC may further include a second branch 62 and a third branch 63. The second branch 62 may include a second auxiliary relay J3-1 and a third auxiliary relay J3-2 connected in series, one end of the second branch 62 is electrically connected between the first power source connection point R1 of the power source of the compressor control loop and the first input connection point 18 of the controller, and the other end of the second branch 62 is electrically connected to the second power source connection point R2 of the power source of the compressor control loop. The third branch 63 may include a fourth auxiliary relay J2-2 and a main contactor M connected in series, one end of the third branch 63 is electrically connected between a first power contact R1 of a power supply of the compressor control circuit and a first input contact 18 of a controller, and the other end of the third branch 63 is electrically connected to an intermediate node between the second auxiliary relay J3-1 and the third auxiliary relay J3-2 of the second branch 62.
Preferably, the TSCC may further include a fifth auxiliary relay J3-3, and one end of the first branch 61, one end of the second branch 62, and one end of the third branch 63 are electrically connected to the first input contact 18 of the controller through the fifth auxiliary relay J3-3. In the utility model discloses in, can assist control through these auxiliary relay J2-1, J3-1, J3-2, J2-2, J3-3 temperature switch control circuit TSCC.
Preferably, the TSCC may further include an emergency stop button EMG, and one end of the first branch 61, one end of the second branch 62, and one end of the third branch 63 are electrically connected to a first power contact R1 of a power supply of the compressor control circuit through the emergency stop button EMG. When taking place emergency, the accessible is pressed scram button EMG cuts off the power, makes equipment shut down, thereby makes the utility model discloses a compressor possesses the emergency stop function.
As shown in fig. 3, it shows the electrical connection relationship between the controller and the controller power source of the compressor of the present invention. In the socket JP5 of the controller, the contact XGD is grounded. The pin 2 is electrically connected to the pin S1 of the controller power supply, which may be, for example, a 25V ac power supply. The contact ACIN3 is electrically connected to the contact S2 of the controller power supply.
As shown in fig. 4, the controller of the compressor of the present invention is electrically connected to the controller power supply (25V ac power supply), the power supply (220V ac power supply), the contactor, the fan, the air intake valve, and other components. In the socket JP3 of the controller, the contact ACIN0 is the contact 18 electrically connected to the power supply of the controller. The contact ACIN1 is electrically connected to the second power contact R2 of the power supply. The contact SV is electrically connected to the loading/unloading solenoid valve LV for controlling loading/unloading of the intake valve. The contact KF is electrically connected to the fan F1 contactor for starting and stopping the fan. The contact RCS and the contact KS are electrically connected with a star-connection contactor S, the contact RCD and the contact KD are electrically connected with an angle-connection contactor D, and the contact KM is electrically connected with a main contactor M and used for controlling the motor to start and operate in a star triangle mode.
Fig. 3 and 4 only illustrate the electrical connection relationship between some components of the present invention, but these should not be construed as limiting the present invention.
In the present invention, the temperature protection device of the compressor 100 may further include an exhaust port temperature sensor 129 (shown in fig. 1), which may be installed at an exhaust port (not shown) of the body 103 of the compressor 100 to detect an exhaust temperature t 1. The exhaust port temperature sensor 129 is electrically connected with the controller, and the exhaust port temperature sensor 129 triggers the controller to alarm and stop the main motor 105 of the compressor 100 when the exhaust temperature T1 reaches a temperature protection set value T1, so that the equipment can be protected. Wherein the temperature protection set value T1 is greater than the temperature switch action value T2.
The utility model discloses it is usable gas vent temperature sensor 129 protects the high temperature unusually through the inside temperature of setting for of controller to realize the protection of organism exhaust temperature. For example, the exhaust temperature is measured as T1 and is set to the temperature protection set point T1 trip, i.e., the temperature protection set point is triggered when T1 reaches T1, and the controller alarms and shuts down to protect the equipment.
The utility model discloses can combine gas vent temperature sensor to play duplicate protection function through increase mechanical type temperature switch on the oil gas bucket. The mechanical temperature switch is, for example, a bimetallic temperature switch, which does not pass through the controller, and if the temperature reaches an action value, the mechanical temperature switch directly cuts off the power supply of the compressor control loop, so that the main motor stops running to protect the compressor unit.
In actual operation, the measured internal temperature T2 of the oil gas barrel is 10-12 ℃ different from the exhaust temperature T1 of the engine body because the mechanical temperature switch is mounted on the upper cover or the side surface of the oil gas barrel, the measured internal temperature T2 of the oil gas barrel is measured by the mechanical temperature switch, and the mechanical temperature switch is set to be a temperature switch action value T2 for tripping. Considering the measurement error, the mechanical temperature can be set to T2 ═ T1- (5-10). degree.C. tripping operation.
In a high temperature fault, the trip temperature of the exhaust temperature of the engine body is T1 (i.e. the aforementioned temperature protection set value T1), and the trip operation value is reached with the internal temperature T2 of the oil and gas barrel. And when the unit operates, oil gas bucket internal temperature T2 is only second to the engine block temperature, the oil is thin because static or other reasons can have the hidden danger of burning, oil gas bucket internal temperature T2 acutely rises, oil gas bucket internal temperature T2 can rise rapidly and exceed the exhaust temperature T1 of engine block, but the exhaust temperature T1 of engine block has not reached engine block exhaust temperature jump temperature T1, engine block exhaust temperature protection is not started, if the unit still continues to go on, can cause bigger loss. As described above, when the internal temperature T2 of the hydrocarbon tank rapidly rises to reach the temperature switch operation value T2, even if the exhaust temperature T1 of the engine body has not reached the engine body exhaust temperature trip temperature T1, the engine body exhaust temperature protection has not been operated, but the internal temperature T2 of the hydrocarbon tank has reached the temperature switch operation value T2. At the moment, the mechanical temperature switch can directly cut off the power supply of the compressor control loop, so that the contactor is disconnected, the controller is powered off, and the main motor is stopped to avoid a more serious situation. When the internal temperature t2 of the oil gas barrel drops below the temperature switch recovery value, the mechanical temperature switch is reset, the compressor control loop is electrified again, and the machine is still in a stop state.
Therefore, the utility model discloses an increase mechanical type temperature switch on the oil gas bucket of compressor, can prevent effectively that oil is thin or the inside high temperature of oil gas bucket from burning even, also can protect the compressor when the temperature protection is not opened to the organism anterior segment, reduce the loss that the accident caused. And, the utility model discloses a mechanical type temperature switch can also avoid detecting the protection inefficacy that time delay or other reasons lead to because of the controller to can many one insurance are in order to improve the operating safety factor of compressor.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. A temperature protection device for a compressor, comprising:
the mechanical temperature switch is arranged on an oil-gas barrel of the compressor and senses the temperature inside the oil-gas barrel, the mechanical temperature switch is electrically connected with a power supply of a compressor control loop and a power supply of a controller through a temperature switch control loop, and the controller is electrically connected with a main motor of the compressor;
wherein the mechanical temperature switch can be turned off to de-energize the compressor control circuit and stop the main motor when sensing that the temperature inside the oil and gas drum rises to a temperature switch actuation value; and the mechanical temperature switch can be reset to energize the compressor control loop when sensing that the temperature inside the oil and gas barrel drops to a temperature switch return value.
2. The temperature protection apparatus of a compressor according to claim 1, wherein the mechanical temperature switch is installed at an upper cover or a side of the oil drum.
3. The temperature protection apparatus of a compressor according to claim 1, wherein the mechanical temperature switch is a bimetal temperature switch.
4. The temperature protection device of a compressor according to claim 1, wherein the temperature switch control circuit comprises:
the first branch circuit comprises a mechanical temperature switch and a first auxiliary relay which are connected in series, one end of the first branch circuit is electrically connected to a first power supply contact of the power supply of the compressor control loop and between first input contacts of the controller, and the other end of the first branch circuit is electrically connected to a second power supply contact of the power supply of the compressor control loop.
5. The temperature protection device of a compressor according to claim 4, wherein the temperature switch control circuit further comprises:
a second branch circuit comprising a second auxiliary relay and a third auxiliary relay connected in series, wherein one end of the second branch circuit is electrically connected between a first power supply contact of the power supply of the compressor control circuit and a first input contact of the controller, and the other end of the second branch circuit is electrically connected to a second power supply contact of the power supply of the compressor control circuit;
a third branch circuit comprising a fourth auxiliary relay and a main contactor connected in series, wherein one end of the third branch circuit is electrically connected to the first power contact of the power supply of the compressor control loop and between the first input contacts of the controller, and the other end of the third branch circuit is electrically connected to the second branch circuit of the second auxiliary relay and an intermediate node between the third auxiliary relays.
6. The temperature protection device of a compressor according to claim 5, wherein the temperature switch control circuit further comprises:
and one end of the first branch, one end of the second branch and one end of the third branch are electrically connected to the first input contact of the controller through the fifth auxiliary relay.
7. The temperature protection device of a compressor according to claim 6, wherein the temperature switch control circuit further comprises:
and one end of the first branch, one end of the second branch and one end of the third branch are electrically connected to the first power supply contact of the power supply of the compressor control loop through the emergency stop button.
8. The temperature protection apparatus for a compressor according to any one of claims 1 to 7, further comprising:
and the exhaust port temperature sensor is arranged at an exhaust port of the compressor body and used for detecting an exhaust temperature, and the exhaust port temperature sensor is electrically connected with the controller, wherein the exhaust port temperature sensor triggers the controller to alarm and stop the main motor when the exhaust temperature reaches a temperature protection set value.
9. The temperature protection device of a compressor according to claim 8, wherein the temperature protection set value is greater than the temperature switch actuation value.
10. A compressor, comprising:
a temperature protection device for a compressor according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021225747.4U CN212615255U (en) | 2020-06-29 | 2020-06-29 | Compressor and temperature protection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021225747.4U CN212615255U (en) | 2020-06-29 | 2020-06-29 | Compressor and temperature protection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212615255U true CN212615255U (en) | 2021-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021225747.4U Active CN212615255U (en) | 2020-06-29 | 2020-06-29 | Compressor and temperature protection device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212615255U (en) |
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2020
- 2020-06-29 CN CN202021225747.4U patent/CN212615255U/en active Active
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