Automatic power-off protection device for expansion machine of cryogenic air separation plant

Abstract

The utility model discloses an automatic power-off protection device for an expansion machine of a deep cooling air separation plant, which comprises a rectangular cold box, an air circulation mechanism is arranged in the rectangular cold box and is connected with an electric power transmission line, a power-off detection box is arranged on the electric power transmission line, a controller is arranged on the power-off detection box, and the controller is connected with the rectangular cold box. The controller is connected with a buzzer, an alarm lamp and a pneumatic ball valve, the buzzer, the alarm lamp and the pneumatic ball valve are connected with a first storage battery arranged in the mounting box, the buzzer and the alarm lamp are fixedly mounted on the outer side of a positioning plate, and a connecting block is arranged on the other side of the positioning plate. According to the automatic power-off protection device for the expansion machine of the deep cooling air separation plant, the problem that an existing automatic power-off protection device for the expansion machine of the deep cooling air separation plant cannot give an alarm to workers when the power-off condition occurs is solved, and an air circulation mechanism is arranged in a rectangular cold box.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of expander, concretely is a kind of deep cooling air separation equipment expander power-off automatic protection device. BACKGROUND

[0002] Expander is the heart of air separation equipment, is very precise component, plays a vital role in the whole air separation equipment, so ensure that expander is not damaged is the prerequisite for the normal operation of the whole air separation equipment, ensure the normal operation of expander also indirectly guarantees the economic benefits of customer.

[0003] Through search, it is found that prior art such as announcement number CN212081791U a kind of deep cooling air separation equipment expander power-off automatic protection device, including rectangular cold box, the rectangular cold box side surface is equipped with power-off protection mechanism, air circulation mechanism is equipped in the rectangular cold box.The utility model has the beneficial effect that when power-off suddenly, pneumatic valve is automatically closed, prevent gas continue to enter expander, protect expander from being damaged, to ensure the normal operation of equipment and the economic interests of user.

[0004] As described above, the existing deep cooling air separation equipment expander power-off automatic protection device prevents gas from continuing to enter expander, protects expander from being damaged, but the existing deep cooling air separation equipment expander power-off automatic protection device cannot warn staff when power-off occurs, so that staff can learn about the situation in time, therefore a deep cooling air separation equipment expander power-off automatic protection device is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of deep cooling air separation equipment expander power-off automatic protection device to solve the problem that the existing deep cooling air separation equipment expander power-off automatic protection device cannot warn staff when power-off occurs in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of deep cooling air separation equipment expander power-off automatic protection device, including rectangular cold box, air circulation mechanism is arranged in the rectangular cold box, and air circulation mechanism is connected with power transmission line, power transmission line is installed with power-off detection box, and controller is arranged on power-off detection box, the controller is connected with buzzer, alarm lamp and pneumatic ball valve, and buzzer, alarm lamp and pneumatic ball valve are connected with the first battery that the installation box interior is arranged, the buzzer and alarm lamp are fixedly installed on the outer side of positioning plate, and the other side of positioning plate is provided with connecting block, the rectangular cold box outer side is fixedly installed with the connecting block slot of cooperation with connecting block, and connecting block slot interior is installed with the movable limit block of cooperation with connecting block.

[0007] Preferably, the air circulation mechanism comprises a fractionating tower, a first heat exchanger and a second heat exchanger, the fractionating tower is connected with the expander arranged outside the rectangular cold box through a first connecting pipe, and a pneumatic ball valve is arranged at one end of the first connecting pipe.

[0008] Through the above technical scheme, the expander is protected.

[0009] Preferably, the power-off detection box is provided with a current detector and a voltage detector, and the current detector, the voltage detector and the controller are connected with a second storage battery arranged in the power-off detection box.

[0010] Through the above technical scheme, the power-off detection is facilitated.

[0011] Preferably, the movable limiting block comprises a handle, the handle is rotatably connected with a first rotating rod arranged in the connecting block slot, two groups of first bevel gears are arranged outside the first rotating rod, the first bevel gears are engaged with second bevel gears, the second bevel gears are arranged outside second rotating rods, third bevel gears are arranged outside the second rotating rods, the third bevel gears are engaged with fourth bevel gears, the fourth bevel gears are rotatable to drive a screw rod mechanism to rotate synchronously, the screw rod mechanism is connected with a moving plate, the moving plate is connected with a mounting plate through a connecting arm, and a connecting limiting block is arranged on one side of the mounting plate.

[0012] Through the above technical scheme, the disassembly and assembly are facilitated.

[0013] Preferably, the moving plate and the mounting plate are slidably connected with the connecting block slot.

[0014] Through the above technical scheme, the moving plate and the mounting plate are movable.

[0015] Preferably, a limiting block groove is arranged on the connecting block and matched with the connecting limiting block.

[0016] Through the above technical scheme, the disassembly and assembly are facilitated.

[0017] Compared with the prior art, the deep cold air separation equipment expander power-off automatic protection device has the advantages that the device can solve the problem that the existing deep cold air separation equipment expander power-off automatic protection device cannot warn the staff when power failure occurs, the air circulation mechanism is arranged in the rectangular cold box, the air circulation mechanism is connected with the power transmission line, the power transmission line is provided with the power failure detection box, the controller is arranged on the power failure detection box, the controller is connected with the buzzer, the alarm lamp and the pneumatic ball valve, the buzzer and the alarm lamp are fixedly installed on the outer side of the positioning plate, the other side of the positioning plate is provided with the connecting block, the rectangular cold box is fixedly provided with the connecting block slot matched with the connecting block on the outer side, the connecting block slot is internally provided with the movable limiting block matched with the connecting block, the power failure detection box can detect the power failure, when the power failure occurs, the controller starts the buzzer, the alarm lamp and the pneumatic ball valve, the buzzer and the alarm lamp give an alarm, and the pneumatic ball valve blocks the first connecting pipe from continuously inputting the gas into the expander, so that the expander is protected. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall front view of the utility model;

[0019] Figure 2 It is the utility model Figure 1 It is an enlarged structure schematic view of A in the utility model;

[0020] Figure 3 It is the utility model Figure 2 It is an enlarged structure schematic view of B in the utility model;

[0021] Figure 4 It is the utility model Figure 2 It is an enlarged structure schematic view of C in the utility model.

[0022] In the drawing: 1, rectangular cold box;2, air circulation mechanism;201, fractionating column;202, first heat exchanger;203, second heat exchanger;204, first connecting pipe;205, expander;3, power transmission line;4, power failure detection box;401, controller;402, current detector;403, voltage detector;5, buzzer;6, alarm lamp;7, pneumatic ball valve;701, mounting box;702, first storage battery;8, positioning plate;801, connecting block;802, connecting block slot;9, movable limiting block;901, handle;902, first rotary rod;903, first helical gear;904, second helical gear;905, second rotary rod;906, third helical gear;907, fourth helical gear;908, screw mechanism;9081, moving plate;9082, connecting arm;9083, mounting plate;909, connecting limiting block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Please refer to Figures 1-4 The present application provides a technical solution: a deep cold air separation equipment expander power failure automatic protection device, a rectangular cold box 1 is internally provided with an air circulation mechanism 2, and the air circulation mechanism 2 is connected with a power transmission line 3, a power failure detection box 4 is installed on the power transmission line 3, and a controller 401 is arranged on the power failure detection box 4, and the controller 401 is connected with a buzzer 5, an alarm lamp 6 and a pneumatic ball valve 7.

[0025] Further explanation, the air circulation mechanism 2 includes a fractionating column 201, a first heat exchanger 202 and a second heat exchanger 203, the fractionating column 201 is connected with an expander 205 arranged outside the rectangular cold box 1 through a first connecting pipe 204, and the pneumatic ball valve 7 is installed at one end of the first connecting pipe 204, the air circulation mechanism 2 is prior art, and specific structure and use method can refer to the related content in the announcement No.CN212081791U deep cold air separation equipment expander power failure automatic protection device.

[0026] Specifically, a current detector 402 and a voltage detector 403 are installed on the power failure detection box 4, and the current detector 402, the voltage detector 403 and the controller 401 are connected with a second storage battery arranged inside the power failure detection box 4, the second storage battery can provide power for the current detector 402, the voltage detector 403 and the controller 401, the power failure detection box 4 can detect power failure, the current detector 402, the voltage detector 403 and the controller 401 are prior art, and will not be described too much, when power failure occurs, the controller 401 starts the buzzer 5, the alarm lamp 6 and the pneumatic ball valve 7, the buzzer 5 and the alarm lamp 6 give an alarm, and the pneumatic ball valve 7 blocks the first connecting pipe 204 from continuously inputting gas to the expander 205, so as to achieve the purpose of protecting the expander 205.

[0027] Specifically, the buzzer 5, the alarm lamp 6 and the pneumatic ball valve 7 are connected with the first storage battery 702 arranged in the installation box 701, the first storage battery 702 can provide power for the buzzer 5, the alarm lamp 6 and the pneumatic ball valve 7, the buzzer 5 and the alarm lamp 6 are fixedly installed on the outside of the positioning plate 8, and the other side of the positioning plate 8 is provided with a connecting block 801, a connecting block slot 802 matched with the connecting block 801 is fixedly installed on the outside of the rectangular cold box 1, and a movable limiting block 9 matched with the connecting block 801 is installed in the connecting block slot 802.

[0028] Specifically, the movable limiting block 9 comprises a handle 901, the handle 901 can drive a first rotating rod 902 arranged in the connecting block slot 802 to rotate, two groups of first bevel gears 903 are arranged on the outside of the first rotating rod 902, the first bevel gears 903 are meshed with second bevel gears 904, the second bevel gears 904 are installed on the outside of a second rotating rod 905, a third bevel gear 906 is arranged on the outside of the second rotating rod 905, the third bevel gear 906 is meshed with a fourth bevel gear 907, the fourth bevel gear 907 can drive a lead screw mechanism 908 to rotate synchronously, the lead screw mechanism 908 is connected with a moving plate 9081, the moving plate 9081 is connected with a mounting plate 9083 through a connecting arm 9082, and a connecting limiting block 909 is installed on one side of the mounting plate 9083.

[0029] Further, the moving plate 9081 and the mounting plate 9083 are slidably connected in the connecting block slot 802.

[0030] Further, a limiting block slot is formed in the connecting block 801 and matched with the connecting limiting block 909.

[0031] When the positioning plate 8 needs to be removed for the maintenance of the buzzer 5 and the alarm lamp 6, the handle 901 is rotated, the first rotating rod 902 is rotated under the action of the handle 901, the second rotating rod 905 is driven to rotate by the first bevel gears 903 and the second bevel gears 904, the third bevel gear 906 is driven to rotate synchronously by the second rotating rod 905, the fourth bevel gear 907 and the lead screw mechanism 908 are driven to rotate because the third bevel gear 906 is meshed with the fourth bevel gear 907, the moving plate 9081 is moved under the action of the rotation of the lead screw mechanism 908, the mounting plate 9083 and the connecting limiting block 909 are moved by the connecting arm 9082, and the connecting limiting block 909 is completely separated from the limiting block slot formed in the connecting block 801, so that the connecting block 801 is taken out from the connecting block slot 802, and the positioning plate 8 is removed.

[0032] The terms "central", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only simplified descriptions for facilitating the description of the utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the protection scope of the utility model.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A kind of deep cooling air separation equipment expander automatic protection device of power-off, including rectangular cold box (1), it is characterized by: The rectangular cold box (1) is internally provided with an air circulation mechanism (2), and the air circulation mechanism (2) is connected with a power transmission line (3), the power transmission line (3) is provided with a power failure detection box (4), and the power failure detection box (4) is provided with a controller (401), the controller (401) is connected with a buzzer (5), an alarm lamp (6) and a pneumatic ball valve (7), and the buzzer (5), the alarm lamp (6) and the pneumatic ball valve (7) are connected with a first storage battery (702) arranged in the installation box (701), the buzzer (5) and the alarm lamp (6) are fixedly installed on the outside of the positioning plate (8), and the other side of the positioning plate (8) is provided with a connecting block (801), the rectangular cold box (1) is fixedly installed with a connecting block slot (802) matched with the connecting block (801), and a movable limiting block (9) matched with the connecting block (801) is arranged in the connecting block slot (802).

2. The deep cooling air separation device expander power-off automatic protection device according to claim 1, characterized in that: The air circulation mechanism (2) comprises a fractional distillation column (201), a first heat exchanger (202) and a second heat exchanger (203), the fractional distillation column (201) is connected with an expander (205) arranged outside the rectangular cold box (1) through a first connecting pipe (204), and the pneumatic ball valve (7) is installed at one end of the first connecting pipe (204).

3. The deep cooling air separation device expander power-off automatic protection device according to claim 1, characterized in that: The power failure detection box (4) is provided with a current detector (402) and a voltage detector (403), and the current detector (402), the voltage detector (403) and the controller (401) are connected with a second storage battery arranged in the power failure detection box (4).

4. The deep cooling air separation device expander power-off automatic protection device according to claim 1, characterized in that: The movable limiting block (9) comprises a handle (901), and the handle (901) can drive a first rotating rod (902) arranged in the connecting block slot (802) to rotate, the first rotating rod (902) is provided with two groups of first helical gears (903) on the outside, and the first helical gears (903) are meshed with second helical gears (904), the second helical gears (904) are installed on the outside of a second rotating rod (905), and the second rotating rod (905) is provided with a third helical gear (906) on the outside, the third helical gear (906) is meshed with a fourth helical gear (907), and the fourth helical gear (907) can drive a screw rod mechanism (908) to rotate synchronously, the screw rod mechanism (908) is connected with a moving plate (9081), and the moving plate (9081) is connected with a mounting plate (9083) through a connecting arm (9082), and the mounting plate (9083) is provided with a connecting limiting block (909) on one side.

5. The deep cooling air separation device expander power-off automatic protection device according to claim 4, characterized in that: The moving plate (9081) and the mounting plate (9083) are slidably connected in the connecting block slot (802).

6. The deep cooling air separation device expander power-off automatic protection device according to claim 4, characterized in that: The connecting block (801) is provided with a limiting block slot matched with the connecting limiting block (909).

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