CN216115002U - Air safety isolation input device of air separation cold box - Google Patents
Air safety isolation input device of air separation cold box Download PDFInfo
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- CN216115002U CN216115002U CN202121941377.9U CN202121941377U CN216115002U CN 216115002 U CN216115002 U CN 216115002U CN 202121941377 U CN202121941377 U CN 202121941377U CN 216115002 U CN216115002 U CN 216115002U
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Abstract
The utility model provides an air safety isolation input device of empty cold box that divides, belongs to low temperature air separation equipment technical field for carry out safety isolation and input to the air that gets into empty cold box that divides. The technical scheme is as follows: the air cylinder is a vertical steel cylinder, the two opposite sides of the upper part of the air cylinder are respectively fixedly connected with an air inlet pipe and an air outlet pipe, the air inlet end of the air inlet pipe is connected with an instrument air source, a check valve and an air inlet valve are sequentially installed on the air inlet pipe, the air inlet end of the air outlet pipe is connected with the air cylinder, an electromagnetic valve is installed in the air outlet pipe, and the output end of the electromagnetic valve is connected with a valve actuating mechanism of high-pressure air entering the cold box. The air-conditioning system has the advantages of simple structure, convenience in use and good safety, and can be used for isolating and controlling air entering the cold box, preventing the influence on equipment in the cold box when an external accident happens, ensuring the safety of the equipment in the cold box and ensuring the safe and stable production.
Description
Technical Field
The utility model relates to a device for safely isolating and inputting air entering an air separation cold box, belonging to the technical field of low-temperature air separation equipment.
Background
In industrial production, various gases such as oxygen, hydrogen, and nitrogen are widely used, and these gases are mainly produced by separation from air by a cryogenic air separation method. The low-temperature air separation method for producing oxygen and nitrogen is characterized by that it utilizes the pressurized air whose pressure is about 0.5MPa, and utilizes the expansion machine to make it be cooled and gradually liquefied into liquid, then utilizes the different boiling points of oxygen and nitrogen to make them be separated so as to obtain various gases of oxygen and nitrogen, etc. During the production process, the temperature of part of the production and storage equipment is 170 ℃ below zero or even lower. For efficient and stable production, the low-temperature equipment is intensively arranged in a box body filled with heat insulation materials, and the box body is used as an independent device and is called a cold box. In the actual production process, the fault phenomena of air pressure fluctuation, low pressure of an instrument air source, interruption of air conveying and the like sometimes occur, and the temperature stability in the cold box is seriously influenced, so that the air entering the cold box needs to be subjected to isolation control, the equipment safety in the cold box is ensured, and the influence on safety production is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an air safety isolation input device of an air separation cold box, which can perform isolation control on air entering the cold box, prevent the influence on equipment in the cold box when an external accident occurs, ensure the safety of the equipment in the cold box and ensure the safe and stable production.
The technical scheme for solving the technical problems is as follows:
the air safety isolation input device of the air separation cold box comprises an air storage cylinder, an air inlet pipe, an air outlet pipe, an air inlet valve, a check valve and a solenoid valve, wherein the air storage cylinder is an upright steel cylinder, the two opposite sides of the upper part of the air storage cylinder are fixedly connected with the air inlet pipe and the air outlet pipe respectively, the air inlet end of the air inlet pipe is connected with an instrument air source, the check valve and the air inlet valve are sequentially installed on the air inlet pipe, the air inlet end of the air outlet pipe is connected with the air storage cylinder, the solenoid valve is installed in the air outlet pipe, and the output end of the solenoid valve is connected with a valve execution mechanism of high-pressure air entering the cold box.
Above-mentioned air safety of empty cold box of dividing keeps apart input device, the gas receiver includes barrel and upper cover, and the upper cover is located the barrel top, and upper cover passes through head flange sealing connection with the barrel upper end, and intake pipe, outlet duct are connected in the both sides of upper cover, and survey buret is installed to the upper end of upper cover, and the manometer is installed to the upper end of surveying buret, surveys the middle installation measuring valve of buret, and the manometer is connected with the upper cover through measuring valve.
The air safety isolation input device of the air separation cold box is characterized in that a blow-off pipe is arranged at the bottom of the air storage cylinder, and a blow-off valve is installed on the blow-off pipe.
The utility model has the beneficial effects that:
the air storage cylinder is used for receiving and storing high-pressure air from an instrument air source, when a fault occurs, an interlocking mechanism or a manual operation sends a signal, the electromagnetic valve acts, the instrument air source in the air storage cylinder is sent to the valve execution mechanism of the cold box by the high-pressure air, so that the air input pipeline of the cold box is isolated from an external air input device, and the safety of equipment in the cold box is ensured; the air inlet pipe check valve of the air storage cylinder can prevent the air storage cylinder from releasing pressure through the air inlet pipe when an instrument air source fails, and the defect that air enters the cold box valve and cannot be closed due to the lack of driving air is avoided.
The air-conditioning system has the advantages of simple structure, convenience in use and good safety, and can be used for isolating and controlling air entering the cold box, preventing the influence on equipment in the cold box when an external accident happens, ensuring the safety of the equipment in the cold box and ensuring the safe and stable production.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The figures are labeled as follows: the device comprises an air cylinder 1, an upper seal head 2, a seal head flange 3, a seal head bolt 4, an air inlet pipe 5, a check valve 6, an air inlet valve 7, an air outlet pipe 8, an electromagnetic valve 9, a measuring pipe 10, a pressure gauge 11, a measuring valve 12, a sewage discharge pipe 13 and a sewage discharge valve 14.
Detailed Description
The utility model provides an air safety isolation input device of an air separation cold box, which can control air entering the cold box when a fault occurs and isolate the cold box from an external air input device so as to ensure the safety of equipment in the cold box.
The utility model is composed of an air storage cylinder 1, an upper seal head 2, a seal head flange 3, a seal head bolt 4, an air inlet pipe 5, a check valve 6, an air inlet valve 7, an air outlet pipe 8, an electromagnetic valve 9, a measuring pipe 10, a pressure gauge 11, a measuring valve 12, a blow-off pipe 13 and a blow-off valve 14.
The gas cylinder 1 is a vertical steel cylinder, the gas cylinder 1 comprises a cylinder body and an upper end enclosure 2, the upper end enclosure 2 is located above the cylinder body, the upper end enclosure 2 is in sealing connection with the upper end of the cylinder body through an end enclosure flange 3 and an end enclosure bolt 4, and an end enclosure gasket is arranged between flange plates of the end enclosure flange 3 to guarantee sealing effect.
The figure shows that an air inlet pipe 5 and an air outlet pipe 8 are connected to two sides of the upper end enclosure 2. The air inlet end of the air inlet pipe 5 is connected with an instrument air source, the air inlet pipe 5 is sequentially provided with a check valve 6 and an air inlet valve 7, and the check valve 6 can prevent the air storage cylinder 1 from releasing pressure through the air inlet pipe 5. The air inlet end of the air outlet pipe 8 is connected with the air storage cylinder 1, the electromagnetic valve 9 is installed in the air outlet pipe 8, and the output end of the electromagnetic valve 9 is connected with a valve actuating mechanism of the high-pressure air inlet cold box.
When the pressure of the instrument air source is low or the instrument air source is interrupted, the air inlet check valve 6 on the air inlet pipe 5 of the air storage cylinder 1 plays a role, the air in the air storage cylinder 1 cannot flow backwards, the pressure in the air storage cylinder 1 is kept unchanged, and the phenomenon that the air inlet valve cannot be closed due to lack of driving air is avoided.
The upper end of the upper seal head 2 is provided with a measuring pipe 10, the upper end of the measuring pipe 10 is provided with a pressure gauge 11, the measuring pipe 10 at the lower part of the pressure gauge 11 is provided with a measuring valve 12, and the pressure gauge 11 is connected with the upper seal head 2 through the measuring valve 12 and is used for measuring the gas pressure in the gas storage cylinder 1.
The bottom of the air receiver 1 is shown to be provided with a drain pipe 13, and the drain pipe 13 is provided with a drain valve 14 for draining the condensed water in the air receiver 1.
One embodiment of the utility model is as follows:
the height of the cylinder body of the air cylinder 1 is 900mm, the diameter is 300mm, and the wall thickness is 8 mm;
the height of an upper seal head 2 of the air cylinder 1 is 400mm, the diameter is 300mm, the wall thickness is 8mm, and the type of a seal head bolt 4 is M20 multiplied by 100;
the diameter of the air inlet pipe 5 is 20 mm;
the model of the check valve 6 is H44H-16P, DN 20;
the model of the air inlet valve 7 is J41H-16P, DN 20;
the diameter of the air outlet pipe 8 is 20 mm;
the model of the electromagnetic valve 9 is VS3315, DN 15;
the measuring tube 10 has a diameter of 15mm and a length of 60 mm;
the model of the pressure gauge 11 is Y-100, 0-1.0 MPa, and the precision is 1.5 grade;
the measuring valve 12 is J23W-64P, DN 10;
the diameter of the sewage discharge pipe 13 is 20 mm;
the blowdown valve 14 is of model Q11F-16P, DN 20.
Claims (3)
1. The utility model provides an input device is kept apart to air separation cold box's air safety which characterized in that: the air storage tank comprises an air storage tank (1), an air inlet pipe (5), an air outlet pipe (8), a check valve (6), an air inlet valve (7) and a solenoid valve (9), wherein the air storage tank (1) is an upright steel cylinder, the two opposite sides of the upper part of the air storage tank (1) are fixedly connected with the air inlet pipe (5) and the air outlet pipe (8) respectively, the air inlet end of the air inlet pipe (5) is connected with an instrument air source, the check valve (6) and the air inlet valve (7) are sequentially installed on the air inlet pipe (5), the air inlet end of the air outlet pipe (8) is connected with the air storage tank (1), the solenoid valve (9) is installed in the air outlet pipe (8), and the output end of the solenoid valve (9) is connected with a valve execution mechanism of a high-pressure air inlet cold box.
2. An air safety isolation input device of an air separation cold box according to claim 1, characterized in that: gas receiver (1) includes barrel and upper cover (2), upper cover (2) are located the barrel top, upper cover (2) pass through head flange (3) sealing connection with the barrel upper end, intake pipe (5), both sides at upper cover (2) are connected in outlet duct (8), survey buret (10) are installed to the upper end of upper cover (2), manometer (11) are installed to the upper end of surveying buret (10), survey middle installation measuring valve (12) of buret (10), manometer (11) are connected with upper cover (2) through measuring valve (12).
3. An air safety isolation input device of an air separation cold box according to claim 1, characterized in that: the bottom of the air storage cylinder (1) is provided with a blow-off pipe (13), and the blow-off pipe (13) is provided with a blow-off valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121941377.9U CN216115002U (en) | 2021-08-18 | 2021-08-18 | Air safety isolation input device of air separation cold box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121941377.9U CN216115002U (en) | 2021-08-18 | 2021-08-18 | Air safety isolation input device of air separation cold box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216115002U true CN216115002U (en) | 2022-03-22 |
Family
ID=80726794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121941377.9U Active CN216115002U (en) | 2021-08-18 | 2021-08-18 | Air safety isolation input device of air separation cold box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216115002U (en) |
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2021
- 2021-08-18 CN CN202121941377.9U patent/CN216115002U/en active Active
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