PLAN52 sealing system spacer fluid separating and recycling system

Abstract

The utility model discloses a PLAN52 sealing system spacer fluid separating and recycling system which comprises a sealing oil siphon tank, the sealing oil siphon tank is connected with a chemical pump through a circulating unit, a circulating water mechanism is connected in the sealing oil siphon tank, the top of the sealing oil siphon tank is connected with a torch-removing system pipeline, and the torch-removing system pipeline is connected with a torch-removing system. The side wall of the sealing oil siphon tank is connected with a storage tank through a separation system, the separation system is arranged close to the top of the sealing oil siphon tank, and a backflow system is further connected between the storage tank and the sealing oil siphon tank. By fully utilizing the volatility of a medium, spacer fluid containing the medium is introduced into the storage tank and is separated in the introduction process, and the separated spacer fluid can be timely collected and supplemented into the siphon tank, so that the loss of the spacer fluid is reduced, the daily spacer fluid supplementing frequency is reduced, the service life of the mechanical seal is effectively prolonged, and the service life of the mechanical seal is prolonged. And the pump is prevented from being damaged by the loss of the spacer fluid.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical sealing separation and processing equipment, and specifically relates to a PLAN52 sealing system isolation liquid separation and recycling system. Background Art

[0002] The existing chemical sealing system PLAN52 flushing scheme, most of the sealing systems use the PLAN52 flushing scheme. The medium transported by the moving equipment is basically hydrocarbon substances. The design allows leakage, and the design requires that the leakage amount is no more than 1ml / h to be qualified. The hydrocarbon medium is volatile. Once there is a leak, the leaked medium accumulates over time, the hydrocarbon medium in the siphon tank continues to increase, and the liquid level in the tank will also increase. The hydrocarbon medium will carry the isolation liquid while volatilizing, causing the isolation liquid loss, resulting in the isolation liquid in the sealed siphon tank cannot meet the production safety requirements.

[0003] Daily, the liquid level in the sealed siphon tank rises, and the liquid level can only be controlled by discharging from the bottom of the siphon tank. Hydrocarbons mainly gather at the top of the tank. When discharged, the isolation liquid will be excluded, the top space will increase, and the hydrocarbons will vaporize. If the tank needs to be supplemented with isolation liquid, the top filling port cannot be used for filling. It can only be replenished by stopping the pump, emptying the medium in the pump and draining the medium in the sealed siphon tank, resulting in waste of process medium, increased daily workload and other complicated procedures. Utility Model Content

[0004] The utility model aims to provide a PLAN52 sealing system isolation liquid separation and recycling system, which solves the problem of isolation liquid loss caused by medium volatilization in the prior art.

[0005] The technical solution adopted by the utility model is a PLAN52 sealing system isolation liquid separation and recycling system, which includes a sealing oil siphon tank, the sealing oil siphon tank is connected to a chemical pump through a circulation unit, a circulating water mechanism is connected inside the sealing oil siphon tank, the top of the sealing oil siphon tank is connected to a flare system pipeline, the side wall of the sealing oil siphon tank is connected to a storage tank through a separation system, the separation system is arranged close to the top of the sealing oil siphon tank, and a reflux system is also connected between the storage tank and the sealing oil siphon tank.

[0006] The utility model is also characterized in that:

[0007] The circulation unit includes an isolation liquid return pipe, one end of which is connected to the isolation chamber of the chemical pump, and the other end of which is connected to the sealing oil siphon tank. The isolation chamber of the chemical pump is also connected to a mechanical sealing pipe, and the end of the mechanical sealing pipe away from the chemical pump is connected to the sealing oil siphon tank.

[0008] The circulating water mechanism comprises a circulating water coil, which is connected to the inner wall of the sealing oil siphon tank. Both ends of the circulating water coil are respectively connected with a water inlet pipe and a water outlet pipe, and both the water inlet pipe and the water outlet pipe pass through the bottom of the sealing oil siphon tank.

[0009] The separation system includes a separation coil, one end of which is connected to the sealing oil siphon tank. The separation coil is arranged near the top of the sealing oil siphon tank. An end of the coil away from the sealing oil siphon tank is connected to an external coil. The external coil is connected to the outer wall of the storage tank. The end of the external coil away from the separation coil extends into the interior of the storage tank. The pipe body of the separation coil is connected to a separation valve.

[0010] The reflux system includes a hydraulic pump, which is connected to the bottom of the storage tank through a connecting pipe. The output end of the hydraulic pump is connected to a reflux pipe, the body of the reflux pipe is connected to a reflux valve, and the body of the connecting pipe is connected to a control valve.

[0011] The side wall of the storage tank is connected to a liquid replenishing pipe, which is arranged close to the top of the storage tank. The body of the liquid replenishing pipe is connected to a liquid replenishing valve. The top of the storage tank is connected to the flare system pipeline through a balancing pipe, the body of the balancing pipe is connected to a balancing valve, and the storage tank is also connected to a liquid level meter.

[0012] The pipe body of the flare system pipeline is connected to a ball valve, the pipe body of the flare system pipeline is connected to a monitoring pipe, the pipe body of the monitoring pipe is connected to a monitoring valve, the ball valve is arranged between the connection point between the balance pipe and the flare system pipeline and the connection point between the monitoring pipe and the flare system pipeline, and the connection point between the monitoring pipe and the flare system pipeline is arranged close to the sealing oil siphon tank.

[0013] The bottom of the sealing oil siphon tank is connected with a pouring pipe, the pipe body of the pouring pipe is connected with a pouring valve, the pouring pipe is arranged between the outlet pipe and the inlet pipe, the pipe body of the inlet pipe is connected with the inlet valve, and the pipe body of the outlet pipe is connected with the outlet valve.

[0014] The beneficial effects of the utility model are:

[0015] The utility model PLAN52 sealing system isolation liquid separation and recycling system fully utilizes the volatility of the medium, introduces the isolation liquid containing the medium into the storage tank, separates it during the introduction process, and the separated isolation liquid can be collected and replenished into the siphon tank in time, thereby reducing the loss of isolation liquid, reducing the frequency of daily replenishment of isolation liquid, effectively increasing the service life of the mechanical seal, and ensuring that the machine pump is not damaged by the loss of isolation liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the isolation fluid separation and recycling system of the PLAN52 sealing system of the utility model.

[0017] In the figure: 1. separation coil, 1-1. separation valve, 2. storage tank, 3. hydraulic pump, 4. return pipe, 4-1. return valve, 5. balance pipe, 5-1. balance valve, 6. liquid level gauge, 7. sealing oil siphon tank, 8. liquid replenishment pipe, 8-1. liquid replenishment valve, 9. chemical pump, 10. pipeline to flare system, 10-1. ball valve, 11. isolation liquid return pipe, 12. machine seal pipe, 13. circulating water coil, 14. water inlet pipe, 14-1. water inlet valve, 15. water outlet pipe, 15-1. water outlet valve, 16. pouring pipe, 16-1. pouring valve, 17. connecting pipe, 17-1. control valve, 18. monitoring pipe, 18-1. monitoring valve, 19. external coil. DETAILED DESCRIPTION

[0018] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0019] The utility model PLAN52 sealing system isolation fluid separation and recycling system, such as Figure 1 As shown, it includes a sealing oil siphon tank 7, which is connected to a chemical pump 9 through a circulation unit, a circulating water mechanism is connected inside the sealing oil siphon tank 7, the top of the sealing oil siphon tank 7 is connected to a flare system pipeline 10, the side wall of the sealing oil siphon tank 7 is connected to a storage tank 2 through a separation system, the separation system is arranged close to the top of the sealing oil siphon tank 7, and a reflux system is also connected between the storage tank 2 and the sealing oil siphon tank 7. The medium in the chemical pump 9 is within the allowable leakage range. The leaked medium enters the sealing oil siphon tank 7 through the circulation unit. The isolation liquid in the sealing oil siphon tank 7 enters the chemical pump 9 through the circulation unit for flushing, cooling, and mechanical sealing. When the medium in the sealing oil siphon tank 7 evaporates, the isolation liquid carried by it enters the storage tank 2 through the separation system. Gas-liquid separation is performed when passing through the separation system. The separated isolation liquid flows into the storage tank 2 under the action of gravity, and then flows back to the sealing oil siphon tank 7 through the reflux system. A part of the separated gas phase medium enters the storage tank 2, and the other part returns to the sealing oil siphon tank 7, and is discharged into the downstream flare collection system with relatively small pressure through the flare system pipeline 10. The circulating water mechanism in the sealing oil siphon tank 7 is flowing circulating water, which cools the tank in summer and prevents freezing in winter.

[0020] Example 1

[0021] The circulation unit includes an isolation liquid return pipe 11, one end of which is connected to the isolation chamber of the chemical pump 9, and the other end of which is connected to the sealing oil siphon tank 7. The isolation chamber of the chemical pump 9 is also connected to an organic sealing pipe 12, and one end of the organic sealing pipe 12 away from the chemical pump 9 is connected to the sealing oil siphon tank 7. When the medium in the chemical pump 9 leaks, a small amount of isolation liquid is carried from the isolation liquid return pipe 11 into the sealing oil siphon tank 7, and the isolation liquid in the sealing oil siphon tank 7 enters the chemical pump 9 from the organic sealing pipe 12.

[0022] The circulating water mechanism includes a circulating water coil 13, which is connected to the inner wall of the sealing oil siphon tank 7. The two ends of the circulating water coil 13 are respectively connected with a water inlet pipe 14 and a water outlet pipe 15, which both pass through the bottom of the sealing oil siphon tank 7. The water inlet pipe 14 and the water outlet pipe 15 serve as the water inlet end and the water outlet end of the circulating water coil 13. According to actual needs, water of different temperatures is introduced into the circulating water coil 13 to cool or prevent freezing of the substances in the sealing oil siphon tank 7.

[0023] Example 2

[0024] The separation system includes a separation coil 1, one end of which is connected to the sealing oil siphon tank 7, and the separation coil 1 is arranged near the top of the sealing oil siphon tank 7. The end of the separation coil 1 away from the sealing oil siphon tank 7 is connected to an external coil 19, which is connected to the outer wall of the storage tank 2, and the end of the external coil 19 away from the separation coil 1 extends into the interior of the storage tank 2. The pipe body of the separation coil 1 is connected to a separation valve 1-1. The external coil 19 is spirally wound on the outer wall of the storage tank 2, and the end of the external coil 19 extending into the storage tank 2 is arranged near the top of the storage tank 2. The separation coil 1 is a coil similar to a cyclone separator. When the medium carrying the isolation liquid enters the separation coil 1 and the external coil 19, gas-liquid separation is performed during the flow process, and most of the separated gas phase medium returns to the sealing oil siphon tank 7 along the pipeline, and the separated isolation liquid flows into the storage tank 2 under its own weight, and the remaining small amount of separated medium enters the storage tank 2 and is discharged from the top of the storage tank 2.

[0025] The reflux system includes a hydraulic pump 3, which is connected to the bottom of the storage tank 2 through a connecting pipe 17, and the output end of the hydraulic pump 3 is connected to a reflux pipe 4, the pipe body of the reflux pipe 4 is connected to a reflux valve 4-1, and the pipe body of the connecting pipe 17 is connected to a control valve 17-1. The storage tank 2 stores isolation liquid, and when the sealing oil siphon tank 7 needs to be supplemented with isolation liquid, it is pumped in through the hydraulic pump 3 for timely supplementation.

[0026] Example 3

[0027] The side wall of the storage tank 2 is connected with a liquid replenishing pipe 8, which is arranged near the top of the storage tank 2. The body of the liquid replenishing pipe 8 is connected with a liquid replenishing valve 8-1. The top of the storage tank 2 is connected with the pipeline 10 of the flare removal system through the balance pipe 5. The body of the balance pipe 5 is connected with a balance valve 5-1. The storage tank 2 is also connected with a liquid level meter 6. After separation, part of the gaseous medium is in the storage tank 2 and is discharged into the pipeline 10 of the flare removal system through the balance pipe 5. Another part is returned to the sealing oil siphon tank 7 and is also discharged into the pipeline 10 of the flare removal system at its top.

[0028] Example 4

[0029] The pipe body of the flare system pipeline 10 is connected with a ball valve 10-1, the pipe body of the flare system pipeline 10 is connected with a monitoring pipe 18, the pipe body of the monitoring pipe 18 is connected with a monitoring valve 18-1, and the ball valve 10-1 is arranged between the connection point between the balance pipe 5 and the flare system pipeline 10 and the connection point between the monitoring pipe 18 and the flare system pipeline 10, and the connection point between the monitoring pipe 18 and the flare system pipeline 10 is arranged close to the sealing oil siphon tank 7. A pressure gauge is also connected to the monitoring pipe 18 to measure the pressure in the sealing oil siphon tank 7. When the value exceeds 0.1 MPa, it proves that the medium leakage of the chemical pump 9 is relatively large, and the mechanical seal needs to be replaced in time.

[0030] The bottom of the sealing oil siphon tank 7 is connected with a pouring pipe 16, the pipe body of the pouring pipe 16 is connected with a pouring valve 16-1, the pouring pipe 16 is arranged between the outlet pipe 15 and the inlet pipe 14, the pipe body of the inlet pipe 14 is connected with the inlet valve 14-1, and the pipe body of the outlet pipe 15 is connected with the outlet valve 15-1. When the pressure in the sealing oil siphon tank 7 is too high or the device needs to be repaired, the isolation liquid in the tank is discharged through the pouring pipe 16.

[0031] The working principle of the utility model PLAN52 sealing system isolation fluid separation and recycling system is as follows:

[0032] When the medium in the chemical pump 9 leaks, a small amount of isolation liquid is carried from the isolation liquid return pipe 11 into the sealing oil siphon tank 7, and the isolation liquid in the sealing oil siphon tank 7 enters the chemical pump 9 from the machine seal pipe 12. The medium entering the sealing oil siphon tank 7 carries part of the isolation liquid and is separated through the separation coil 1 and the external coil 19. The separated isolation liquid flows into the storage tank 2 under its own weight. A part of the separated gas phase medium enters the storage tank 2 and is discharged into the flare system pipeline 10 through the balance pipe 5, and the other part returns to the sealing oil siphon tank 7, and then is discharged from the flare system pipeline 10 into the downstream flare collection system with relatively small pressure. The isolation liquid is replenished into the sealing oil siphon tank 7 in time through the storage tank 2, which ensures that the isolation liquid is at a normal liquid level, solves the problem of difficulty in online isolation liquid replenishment, and reduces the loss of isolation liquid.

[0033] The utility model PLAN52 sealing system isolation liquid separation and recycling system fully utilizes the volatility of the medium, introduces the isolation liquid containing the medium into the storage tank, separates it during the introduction process, and the separated isolation liquid can be collected and replenished into the siphon tank in time, thereby reducing the loss of isolation liquid, reducing the frequency of daily replenishment of isolation liquid, effectively increasing the service life of the mechanical seal, and ensuring that the machine pump is not damaged by the loss of isolation liquid.

Claims

1. PLAN52 sealing system isolation fluid separation and recycling system, characterized by: The invention comprises a sealing oil siphon tank (7), wherein the sealing oil siphon tank (7) is connected to a chemical pump (9) via a circulation unit, a circulating water mechanism is connected inside the sealing oil siphon tank (7), the top of the sealing oil siphon tank (7) is connected to a flare system pipeline (10), the side wall of the sealing oil siphon tank (7) is connected to a storage tank (2) via a separation system, the separation system is arranged close to the top of the sealing oil siphon tank (7), and a reflux system is also connected between the storage tank (2) and the sealing oil siphon tank (7).

2. The PLAN52 sealing system isolation fluid separation and recycling system according to claim 1 is characterized in that: The circulation unit comprises an isolation liquid return pipe (11), one end of which is connected to the isolation chamber of the chemical pump (9), and the other end of which is connected to the sealing oil siphon tank (7). The isolation chamber of the chemical pump (9) is also connected to an organic sealing pipe (12), and one end of the organic sealing pipe (12) away from the chemical pump (9) is connected to the sealing oil siphon tank (7).

3. The PLAN52 sealing system isolation fluid separation and recycling system according to claim 1 is characterized in that: The circulating water mechanism comprises a circulating water coil (13), the circulating water coil (13) being connected to the inner wall of the sealing oil siphon tank (7), and the two ends of the circulating water coil (13) being respectively connected to a water inlet pipe (14) and a water outlet pipe (15), and the water inlet pipe (14) and the water outlet pipe (15) both pass through the bottom of the sealing oil siphon tank (7).

4. The PLAN52 sealing system isolation fluid separation and recycling system according to claim 1 is characterized in that: The separation system comprises a separation coil (1), one end of the separation coil (1) is connected to a sealing oil siphon tank (7), the separation coil (1) is arranged close to the top of the sealing oil siphon tank (7), the end of the separation coil (1) away from the sealing oil siphon tank (7) is connected to an external coil (19), the external coil (19) is connected to the outer wall of a storage tank (2), the end of the external coil (19) away from the separation coil (1) extends into the interior of the storage tank (2), and the pipe body of the separation coil (1) is connected to a separation valve (1-1).

5. The PLAN52 sealing system isolation fluid separation and recycling system according to claim 1 is characterized in that: The reflux system comprises a hydraulic pump (3), the hydraulic pump (3) being connected to the bottom of the storage tank (2) via a connecting pipe (17), the output end of the hydraulic pump (3) being connected to a reflux pipe (4), the pipe body of the reflux pipe (4) being connected to a reflux valve (4-1), and the pipe body of the connecting pipe (17) being connected to a control valve (17-1).

6. The PLAN52 sealing system isolation fluid separation and recycling system according to claim 5 is characterized in that: The side wall of the storage tank (2) is connected to a liquid replenishing pipe (8), the liquid replenishing pipe (8) is arranged close to the top of the storage tank (2), the pipe body of the liquid replenishing pipe (8) is connected to a liquid replenishing valve (8-1), the top of the storage tank (2) is connected to a flare removal system pipeline (10) through a balancing pipe (5), the pipe body of the balancing pipe (5) is connected to a balancing valve (5-1), and the storage tank (2) is also connected to a liquid level meter (6).

7. The PLAN52 sealing system isolation fluid separation and recycling system according to claim 1 is characterized in that: The pipe body of the flare system pipeline (10) is connected to a ball valve (10-1), the pipe body of the flare system pipeline (10) is connected to a monitoring pipe (18), the pipe body of the monitoring pipe (18) is connected to a monitoring valve (18-1), the ball valve (10-1) is arranged between the connection point between the balance pipe (5) and the flare system pipeline (10) and the connection point between the monitoring pipe (18) and the flare system pipeline (10), and the connection point between the monitoring pipe (18) and the flare system pipeline (10) is arranged close to the sealing oil siphon tank (7).

8. The PLAN52 sealing system isolation fluid separation and recycling system according to claim 7 is characterized in that: The bottom of the sealing oil siphon tank (7) is connected to a pouring pipe (16), the pipe body of the pouring pipe (16) is connected to a pouring valve (16-1), the pouring pipe (16) is arranged between a water outlet pipe (15) and a water inlet pipe (14), the pipe body of the water inlet pipe (14) is connected to a water inlet valve (14-1), and the pipe body of the water outlet pipe (15) is connected to a water outlet valve (15-1).

Images