Oil changing device of hydrogen sulfide compressor

Abstract

An oil changing device of a hydrogen sulfide compressor comprises a buffering oil tank and a collecting oil tank, two opposite walls of the buffering oil tank are provided with a feeding port and a first outlet respectively, the bottom of the buffering oil tank is provided with a second outlet and provided with a first valve, a second valve and a third valve respectively to control opening and closing, and the collecting oil tank is located below the buffering oil tank and connected with the second outlet. A feeding port of the buffering oil tank is connected with an oil discharging port of the hydrogen sulfide compressor, a first outlet of the buffering oil tank is connected with a tail gas torch, the bottom of the side wall of the collecting oil tank is connected with a nitrogen source through a first nitrogen pipe, a fourth valve and a check valve are arranged on the first nitrogen pipe, and the check valve is located on the upstream of the fourth valve. The oil change device is simple in structure and convenient to operate, on the basis that oil change of the hydrogen sulfide compressor is achieved, leakage of hydrogen sulfide in the hydrogen sulfide compressor can be effectively avoided, physical and psychological health of maintenance personnel is guaranteed, and environmental pollution is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical industry especially relates to a hydrogen sulfide compressor's oil changing device. BACKGROUND

[0002] The hydrogen sulfide gas is compressed by using the reciprocating compressor in the chemical enterprise, and the lubricating oil used by the reciprocating compressor needs to be replaced regularly.

[0003] At present, the maintenance personnel replaces the lubricating oil used by the reciprocating compressor as the oil change on site, specifically: oil is discharged through the oil drain opening at the bottom of the oil pool of the reciprocating compressor, and oil is added to the oil pool of the reciprocating compressor through the oil hole.

[0004] In the oil discharging process, the poisoning risk caused by the leakage of hydrogen sulfide gas is accompanied. In addition, personnel directly contact when treating waste oil is inevitable, and the waste oil also contains a small amount of hydrogen sulfide, which is evaporated into the atmosphere, not only causes environmental pollution, but also accompanies the poisoning risk, which is also not conducive to the physical and mental health of the maintenance personnel.

[0005] Therefore, designing an oil changing device matched with the hydrogen sulfide compressor to eliminate the poisoning risk of hydrogen sulfide and ensure the physical and mental health of the maintenance personnel is a problem to be solved by the person skilled in the art. SUMMARY

[0006] The utility model aims at the shortage of prior art, provides a kind of hydrogen sulfide compressor's oil changing device, its structure is simple, easy to operate, on the basis of realizing the oil change of hydrogen sulfide compressor, the leakage of hydrogen sulfide in it can be effectively avoided, the physical and mental health of maintenance personnel is guaranteed, and environmental pollution is avoided.

[0007] The technical scheme of the utility model is: a kind of hydrogen sulfide compressor's oil changing device, including buffer oil tank, collection oil tank, two pairs of walls of the buffer oil tank are respectively provided with feed inlet, first outlet, bottom is provided with second outlet, and first valve, second valve, third valve control opening and closure are respectively arranged, the collection oil tank is located below the buffer oil tank, is connected with second outlet, the feed inlet of the buffer oil tank is connected with the oil drain opening of hydrogen sulfide compressor, the first outlet of buffer oil tank is connected with tail gas torch, the sidewall bottom of the collection oil tank is connected with nitrogen source by first nitrogen pipe, fourth valve and check valve are arranged on this first nitrogen pipe, and the check valve is located the upstream of fourth valve.

[0008] The baffle is arranged in the buffer oil tank between the feed inlet and the first outlet.

[0009] The buffer oil tank is connected by the upper cylindrical box and the lower conical box to form a whole, and the baffle is arranged in the cylindrical box.

[0010] The top of the buffer oil tank is connected with a nitrogen source through a second nitrogen pipe, and a fifth valve is arranged on the second nitrogen pipe.

[0011] The downstream end of the second nitrogen pipe is located between the feed inlet and the baffle.

[0012] The oil outlet of the hydrogen sulfide compressor is provided with a sixth valve, the top inlet of the collection oil tank is provided with a seventh valve, and an eighth valve is arranged on the first nitrogen pipe and located upstream of the check valve.

[0013] The above technical scheme has the following beneficial effects:

[0014] 1. The oil changing device of the hydrogen sulfide compressor comprises a buffer oil tank and a collection oil tank, wherein the buffer oil tank is used to slow down the lubricating oil discharged by the hydrogen sulfide compressor and separate most of the hydrogen sulfide gas therein, and the collection oil tank is used to receive the lubricating oil after preliminary separation. Two pairs of walls of the buffer oil tank are respectively provided with a feed inlet and a first outlet, and the bottom is provided with a second outlet, and first, second and third valves are arranged to control the opening and closing, that is, the first, second and third valves can be used to control the opening and closing of the feed inlet, the first outlet and the second outlet, respectively. The collection oil tank is located below the buffer oil tank and is connected with the second outlet, and the lubricating oil after preliminary separation enters the collection oil tank from the second outlet under the action of gravity. The feed inlet of the buffer oil tank is connected with the oil outlet of the hydrogen sulfide compressor, the first outlet of the buffer oil tank is connected with a tail gas flare, and the oil outlet of the hydrogen sulfide compressor is opened. The lubricating oil in the compressor oil pool enters the buffer oil tank under the action of gravity, most of the hydrogen sulfide gas therein enters the tail gas flare for combustion treatment through the first outlet, and the lubricating oil after preliminary separation enters the collection oil tank under the action of gravity, which can effectively avoid the leakage of hydrogen sulfide during the oil discharge process, and the collected lubricating oil is collected in the collection oil tank, which also avoids the direct contact of the maintenance personnel with the lubricating oil. The bottom of the side wall of the collection oil tank is connected with a nitrogen source through a first nitrogen pipe, a fourth valve and a check valve are arranged on the first nitrogen pipe, and the check valve is located upstream of the fourth valve. After the collection is completed, the first valve is closed, the fourth valve is opened, the lubricating oil in the collection oil tank is stripped by nitrogen, the residual hydrogen sulfide therein is sent to the tail gas flare for combustion treatment through the second outlet and the first outlet, and the content of hydrogen sulfide in the lubricating oil is effectively reduced.

[0015] 2. A baffle is arranged in the buffer oil tank between the feed inlet and the first outlet to prevent the lubricating oil from entering the tail gas flare during oil discharge and to realize the recovery of the lubricating oil. The top of the buffer oil tank is connected with a nitrogen source through a second nitrogen pipe, and a fifth valve is arranged on the second nitrogen pipe. After the stripping of the collection oil tank by nitrogen is completed, the third valve is closed and the fifth valve is opened, and nitrogen is used to purge the buffer oil tank, so that the lubricating oil vapor and hydrogen sulfide remaining in the buffer oil tank are sent to the tail gas flare, and the leakage amount of hydrogen sulfide is further reduced.

[0016] 3、the oil drain of the hydrogen sulfide compressor is provided with a fifth valve, so that the oil changing device can be detached, and the maintenance of the oil changing device is facilitated; the top inlet of the collecting tank is provided with a sixth valve, so that the collecting tank can be separated twice, the collected lubricating oil is conveniently treated, and leakage is avoided; and the first nitrogen pipe is provided with a seventh valve upstream of the check valve, the check valve prevents the hydrogen sulfide and the lubricating oil from flowing back to the nitrogen source, prevents the tail gas flare from being reversed, and is beneficial to the natural pressure relief of the collecting tank, and ensures the safety of the equipment.

[0017] The application will be further described below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The application is a connection diagram.

[0019] In the drawings, 1 is a buffer tank, 11 is a cylindrical tank body, 12 is a conical tank body, 2 is a collecting tank, 3 is an inlet, 4 is a first outlet, 5 is a second outlet, 6 is a first nitrogen pipe, 7 is a fourth valve, 8 is a check valve, 9 is a baffle, 10 is a second nitrogen pipe, a is a first valve, b is a second valve, c is a third valve, e is a fifth valve, f is a sixth valve, g is a seventh valve, and h is an eighth valve. DETAILED DESCRIPTION

[0020] Reference Figure 1The utility model discloses a specific embodiment of a hydrogen sulfide compressor oil change device. The hydrogen sulfide compressor oil change device comprises a buffer tank 1 and a collection tank 2. The buffer tank 1 is provided with a feed inlet 3 and a first outlet 4 on two pairs of walls respectively, a second outlet 5 at the bottom, and first, second and third valves a, b and c for controlling opening and closing. In this embodiment, the buffer tank is composed of an upper cylindrical tank body 11 and a lower conical tank body 12. The feed inlet and the first outlet are arranged on the sidewall of the cylindrical tank body and located on the same diameter. Obviously, the second outlet is arranged at the bottom of the conical tank body. Furthermore, the cylindrical tank body 11 of the buffer tank 1 is provided with a baffle 9 between the feed inlet 3 and the first outlet 4. The collection tank 2 is located below the buffer tank 1 and connected with the second outlet 5. In this embodiment, the top inlet of the collection tank is provided with a seventh valve g. The sidewall bottom of the collection tank 2 is connected with a nitrogen source through a first nitrogen pipe 6. The first nitrogen pipe 6 is provided with a fourth valve 7 and a check valve 8. The check valve 8 is located upstream of the fourth valve 7. The first nitrogen pipe is also provided with an eighth valve h located upstream of the check valve 8. The feed inlet 3 of the buffer tank 1 is connected with the oil drain port of the hydrogen sulfide compressor. In order to facilitate the disassembly and replacement of the oil change device, the oil drain port of the hydrogen sulfide compressor is provided with a sixth valve f. The first outlet 4 of the buffer tank 1 is connected with a tail gas torch. In order to avoid the residual hydrogen sulfide, the top of the buffer tank 1 is connected with a nitrogen source through a second nitrogen pipe 10. The second nitrogen pipe 10 is provided with a fifth valve e. Specifically, the downstream end of the second nitrogen pipe 10 is located between the feed inlet 3 and the baffle 9.

[0021] The working principle of the utility model is as follows: when draining oil, the second valve, the third valve, the seventh valve, the first valve and the sixth valve are opened in sequence. The lubricating oil in the oil pool of the hydrogen sulfide compressor is drained to the buffer tank. After preliminary separation, the lubricating oil enters the collection tank under the action of gravity, and the hydrogen sulfide enters the tail gas torch for incineration. After the oil is drained, the sixth valve and the first valve are closed, the fourth valve and the eighth valve are opened, and the lubricating oil in the collection tank is stripped with nitrogen, so that the residual hydrogen sulfide in the lubricating oil enters the buffer tank and is burned in the tail gas torch. After purging is completed, the fourth valve and the eighth valve are closed, the third valve and the seventh valve are closed, and the fifth valve is opened. Nitrogen is used to purge the buffer tank, and the residual hydrogen sulfide in the buffer tank is purged to the tail gas torch for incineration. The hydrogen sulfide compressor after oil draining can be filled with new lubricating oil through the oil filling hole. The collection tank can be disassembled for processing the collected waste lubricating oil.

Claims

1. An oil change device for a hydrogen sulfide compressor, characterized by: It comprises a buffer tank (1), a collecting tank (2), Two pairs of walls of the buffer tank (1) are respectively provided with a feeding port (3) and a first outlet (4), the bottom is provided with a second outlet (5), and a first valve (a), a second valve (b) and a third valve (c) are respectively arranged to control opening and closing, the collecting tank (2) is located below the buffer tank (1) and connected with the second outlet (5), The feeding port (3) of the buffer tank (1) is connected with a hydrogen sulfide compressor oil drain port, and the first outlet (4) of the buffer tank (1) is connected with a tail gas torch, A first nitrogen pipe (6) is connected with a nitrogen source through the bottom of the sidewall of the collecting tank (2), the first nitrogen pipe (6) is provided with a fourth valve (7) and a check valve (8), and the check valve (8) is located upstream of the fourth valve (7).

2. The oil change device for a hydrogen sulfide compressor according to claim 1, characterized by: A baffle (9) is arranged in the buffer tank (1) and located between the feeding port (3) and the first outlet (4).

3. The oil change device for a hydrogen sulfide compressor according to claim 2, characterized by: The buffer tank (1) is composed of an upper cylindrical tank body (11) and a lower conical tank body (12), and the baffle (9) is arranged in the cylindrical tank body (11).

4. The oil change device for a hydrogen sulfide compressor according to claim 3, characterized by: A second nitrogen pipe (10) is connected with a nitrogen source through the top of the buffer tank (1), and the second nitrogen pipe (10) is provided with a fifth valve (e).

5. The oil change device for a hydrogen sulfide compressor according to claim 4, characterized by: The downstream end of the second nitrogen pipe (10) is located between the feeding port (3) and the baffle (9).

6. The oil change device for a hydrogen sulfide compressor according to claim 1, characterized by: The oil drain port of the hydrogen sulfide compressor is provided with a sixth valve (f), the top inlet of the collecting tank (2) is provided with a seventh valve (g), and the first nitrogen pipe (6) is provided with an eighth valve (h) located upstream of the check valve (8).

Images