Leaked liquid recovery system applied to reciprocating pump

Abstract

The utility model discloses a leaked liquid recovery system applied to a reciprocating pump. The leaked liquid recovery system comprises a reciprocating plunger pump, a collected liquid storage tank, a leaked liquid recovery tank, a nitrogen pressurization system and a pressure relief system, the reciprocating plunger pump is communicated with a liquid collecting storage tank, leaked liquid of the reciprocating plunger pump is firstly discharged into the liquid collecting storage tank, and the leaked liquid discharging position of the reciprocating plunger pump is higher than a leaked liquid inlet of the liquid collecting storage tank; the liquid collection storage tank is provided with the nitrogen pressurization system and the pressure relief system, leaked liquid entering the liquid collection storage tank is pressurized by the nitrogen pressurization system and then is discharged into the leaked liquid recovery tank, and the device has the advantages that the leaked liquid automatically flows into the liquid collection storage tank through gravity, extra power is not needed, and energy is saved. The nitrogen pressurizing system and the pressure relief system are matched, so that the leaked liquid is automatically and efficiently recycled, the automation degree of leaked liquid recycling is improved, frequent manual operation is avoided, and the labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical industry especially, it is a kind of leakage recovery system applied to reciprocating pump. BACKGROUND

[0002] In petroleum chemical industry, coal mining, metallurgy and many other industrial fields, reciprocating plunger pump becomes the indispensable key equipment in production process by its characteristics of providing high pressure and large flow liquid delivery. It relies on the periodic reciprocating movement of plunger in pump cavity, changes the volume of sealing cavity, realizes the directional suction and high pressure discharge of liquid by the cooperation of one-way valve, to meet the strict requirements of various complex production processes on liquid delivery. But in actual operation, reciprocating plunger pump has a problem to be solved urgently-leakage of packing parts. Because plunger reciprocates frequently, and packing parts rub constantly, packing parts are prone to wear after long time operation. Once packing parts wear, it cannot be effectively sealed, leading to leakage.

[0003] The current industry handles leakage in a traditional and extensive way, mainly using liquid receiving disc, liquid receiving barrel to set liquid discharge port of pump body pump cavity and periodically manually draining, or building cofferdam method. Manual draining not only consumes a lot of manpower and time cost, but also is inefficient. In manual operation process, operator needs to frequently contact leakage, and these leakages often have corrosive, toxic or flammable and explosive properties, which brings great safety risk to operator, and slight carelessness may cause safety accident, threatening the life and health of operator. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem to provide a kind of leakage recovery system that can automatically collect the leakage of reciprocating pump.

[0005] The utility model solves the technical problem by the technical scheme that a kind of leakage recovery system applied to reciprocating pump, including reciprocating plunger pump, liquid collection storage tank, leakage recovery tank, nitrogen pressurizing system and pressure relief system;Reciprocating plunger pump together with liquid collection storage tank, the leakage of reciprocating plunger pump is first discharged into liquid collection storage tank, and the leakage discharge position of reciprocating plunger pump is higher than the leakage inlet of liquid collection storage tank;Nitrogen pressurizing system and pressure relief system are provided on the liquid collection storage tank, the leakage into liquid collection storage tank is discharged into leakage recovery tank after pressurizing by nitrogen pressurizing system, after leakage discharge is completed, the gas pressure of liquid collection storage tank is restored to normal by pressure relief system, and subsequent leakage continues to enter liquid collection storage tank.

[0006] The further preferred scheme of the utility model is: the nitrogen pressurizing system includes nitrogen pressure compensation port, nitrogen pressure compensation pressure reducing valve, nitrogen pressure compensation check valve and nitrogen pressure compensation hand valve; the nitrogen enters the liquid collecting tank through the nitrogen pressure compensation port, the nitrogen pressure compensation pressure reducing valve is used for adjusting nitrogen pressure, the nitrogen pressure compensation check valve prevents the liquid in the liquid collecting tank from flowing back, and the nitrogen pressure compensation hand valve controls the on-off of nitrogen.

[0007] The further preferred scheme of the utility model is: the pressure relief system includes a safety valve and related valves, and the safety valve front hand valve, safety valve rear hand valve, safety valve auxiliary line front hand valve, safety valve auxiliary line rear hand valve and safety valve discharge pipeline check valve work cooperatively to realize the safe pressure relief of the liquid collecting tank.

[0008] The further preferred scheme of the utility model is: the liquid collecting tank is further provided with a liquid level meter for monitoring the liquid level, the liquid level meter is connected with the liquid collecting tank through a liquid level meter upper outlet and a liquid level meter lower outlet, and a liquid level meter upper outlet hand valve and a liquid level meter lower outlet hand valve are arranged at the liquid level meter upper outlet and the liquid level meter lower outlet respectively.

[0009] The further preferred scheme of the utility model is: a self-flow line hand valve and a self-flow line check valve are arranged on the connecting pipeline between the liquid collecting tank and the reciprocating plunger pump, so that the leakage can flow into the liquid collecting tank and backflow is prevented.

[0010] The further preferred scheme of the utility model is: a liquid collecting tank drainage hand valve and a liquid collecting tank drainage pipeline guide are arranged on the pipeline through which the liquid collecting tank drains to the leakage recovery tank, the liquid collecting tank drainage hand valve controls drainage, and the liquid collecting tank drainage pipeline guide is used for draining residual liquid in the pipeline.

[0011] The further preferred scheme of the utility model is: the liquid collecting tank is further provided with a low point drainage port and a low point drainage hand valve, which are used for draining the accumulated liquid at the bottom of the liquid collecting tank.

[0012] The further preferred scheme of the utility model is: the liquid collecting tank is provided with an on-site pressure gauge, which is used for monitoring the pressure in the liquid collecting tank in real time

[0013] By arranging the leakage drainage port of the reciprocating plunger pump at a position higher than the leakage inlet of the liquid collecting tank, the leakage can flow into the liquid collecting tank by gravity, without the need of additional power, thereby saving energy. In combination with the nitrogen pressurizing system and the pressure relief system, the leakage can be automatically and efficiently recovered, the automation degree of leakage recovery is improved, manual frequent operation is avoided, and labor cost is reduced. Meanwhile, the whole recovery process is in a closed state, the pollution risk of the leakage to the environment is reduced, material waste is also reduced, and the dual goals of environmental protection and cost control are achieved. Moreover, the recycling process is cyclic, which is convenient for continuously observing and recording the leakage amount, and provides accurate data support for planned maintenance of equipment. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model.

[0015] Figure 2 It is a structural schematic view of prior design. DETAILED DESCRIPTION

[0016] The utility model will be further described in detail below in combination with the drawings.

[0017] As Figure 1 shown, a kind of liquid leakage recovery system applied to reciprocating pump, including reciprocating plunger pump 1, liquid collection tank 2, liquid leakage recovery tank 3, nitrogen pressurizing system 4 and pressure relief system 5.Reciprocating plunger pump 1 together with liquid collection tank 2, the liquid leakage of the reciprocating plunger pump 1 is first discharged into liquid collection tank 2, and the liquid leakage discharge position of the reciprocating plunger pump 1 is higher than the liquid leakage inlet of liquid collection tank 2;Nitrogen pressurizing system 4 and pressure relief system 5 are provided on the liquid collection tank 2, and the liquid leakage into liquid collection tank 2 is discharged into liquid leakage recovery tank 3 after being pressurized by nitrogen pressurizing system 4, and after liquid leakage discharge is completed, the gas pressure of liquid collection tank 2 is restored to normal by pressure relief system 5, and subsequent liquid leakage continues to enter liquid collection tank 2.By setting the liquid leakage discharge port of reciprocating plunger pump 1 at the position higher than the liquid leakage inlet of liquid collection tank 2, gravity is utilized to realize that liquid leakage flows into liquid collection tank 2 automatically, without additional power, and energy is saved.Coordinate nitrogen pressurizing system 4 and pressure relief system 5, realize the automatic, efficient recovery of liquid leakage, improve the degree of automation of liquid leakage recovery, avoid frequent manual operation, and reduce labor cost.At the same time, the entire recovery process is in closed state, reduces the pollution risk of liquid leakage to environment, also reduces material waste, realizes the dual goal of environmental protection and cost control.Moreover, this circulating recovery process is convenient for continuously observing and recording liquid leakage amount, provides accurate data support for planned maintenance of equipment.

[0018] The nitrogen pressurization system 4 comprises a nitrogen pressurization port 41, a nitrogen pressurization pressure reducing valve 42, a nitrogen pressurization check valve 43, and a nitrogen pressurization hand valve 44. The nitrogen enters the liquid collection tank 2 through the nitrogen pressurization port 41, the nitrogen pressurization pressure reducing valve 42 is used to adjust the nitrogen pressure, the nitrogen pressurization check valve 43 prevents the liquid in the liquid collection tank 2 from flowing backward, and the nitrogen pressurization hand valve 44 controls the on-off of the nitrogen. The nitrogen pressurization pressure reducing valve 42 can accurately adjust the nitrogen pressure entering the liquid collection tank 2, ensuring that a stable and appropriate pressure is provided for the leaked liquid under different working conditions, so that the leaked liquid can be smoothly and efficiently pressed into the leaked liquid recovery tank 3. The nitrogen pressurization check valve 43 effectively prevents the liquid in the liquid collection tank 2 from flowing backward, avoiding the recycled leaked liquid from flowing back to the liquid collection tank 2, ensuring the one-way nature and stability of the recycling process, and preventing the recycling efficiency and normal operation of the system from being affected by the backward flow of the liquid. The nitrogen pressurization hand valve 44 is convenient for the operator to flexibly control the on-off of the nitrogen according to the actual situation, enhancing the convenience and controllability of the system operation, and the nitrogen pressurization process can be started or stopped at any time when needed.

[0019] The pressure relief system 5 comprises a safety valve front hand valve 52, a safety valve rear hand valve 53, a safety valve auxiliary line front hand valve 54, a safety valve auxiliary line rear hand valve 55, and a safety valve discharge pipeline check valve 56, which work together to realize the safe pressure relief of the liquid collection tank 2. The pressure relief system 5 composed of related valves can start the pressure relief operation in time when the pressure in the liquid collection tank 2 is too high. The safety valve front hand valve 52 and the rear hand valve 53 can control the use and closing of the safety valve, which is convenient for operation during system maintenance or debugging. The safety valve auxiliary line front hand valve 54 and the rear hand valve 55 provide a backup pressure relief channel, which can be used for pressure relief when the main channel of the safety valve fails, enhancing the reliability and safety of the system. The safety valve discharge pipeline check valve 56 prevents the gas or liquid after pressure relief from flowing back to the liquid collection tank 2, ensuring the smooth progress of the pressure relief process, avoiding safety accidents caused by backflow, and ensuring the safe and stable operation of the liquid collection tank 2 and the entire recycling system.

[0020] The liquid collection tank 2 is also provided with a liquid level meter 6 for monitoring the liquid level. The liquid level meter 6 is connected to the liquid collection tank 2 through a liquid level meter upper outlet 61 and a liquid level meter lower outlet 62, and a liquid level meter upper outlet hand valve 63 and a liquid level meter lower outlet hand valve 64 are respectively arranged at the liquid level meter upper outlet 61 and the liquid level meter lower outlet 62. The liquid level meter 6 monitors the liquid level in the liquid collection tank 2 in real time, enabling the operator to intuitively understand the storage condition of the leaked liquid. The liquid level meter upper outlet 61 and the liquid level meter lower outlet 62 are connected to the liquid collection tank 2 and are equipped with hand valves, which facilitate the installation, disassembly, maintenance, and repair of the liquid level meter 6. When the liquid level meter 6 fails or needs to be calibrated or cleaned, the hand valves can be closed to prevent the liquid in the liquid collection tank 2 from leaking, improving the maintenance convenience of the liquid level meter 6 and ensuring the accuracy of the liquid level monitoring, which helps the operator to timely grasp the change of the liquid level in the liquid collection tank 2 and reasonably arrange the leaked liquid recovery work.

[0021] The connecting pipeline between the liquid collecting tank 2 and the reciprocating plunger pump 1 is provided with a self-flow line hand valve 71 and a self-flow line one-way valve 72, which ensure that the leaked liquid can flow into the liquid collecting tank 2 and prevent backflow. The self-flow line hand valve 71 can control the flow of the leaked liquid into the liquid collecting tank 2 according to the actual situation, and can flexibly adjust the amount of leaked liquid flowing in during system debugging, maintenance or abnormal situations. The self-flow line one-way valve 72 prevents the liquid in the liquid collecting tank 2 from flowing back to the reciprocating plunger pump 1, avoids affecting the normal operation of the pump, ensures the one-way nature of the leaked liquid recovery, maintains the normal operation order of the system, and ensures the stability and reliability of the leaked liquid recovery process. The self-flow line hand valve 71 and the self-flow line one-way valve 72 are provided with a self-flow line hand valve 73.

[0022] The pipeline for discharging the liquid collecting tank 2 to the leaked liquid recovery tank 3 is provided with a liquid collecting tank discharge hand valve 81 and a liquid collecting tank discharge pipeline guide 82. The liquid collecting tank discharge hand valve 81 controls the discharge of the liquid, and the liquid collecting tank discharge pipeline guide 82 is used to discharge the residual liquid in the pipeline. The liquid collecting tank discharge hand valve 81 accurately controls the process of discharging the leaked liquid into the leaked liquid recovery tank 3, and the operator can flexibly control the discharge time and discharge amount according to the actual demand, thereby improving the accuracy and controllability of the leaked liquid recovery operation. The liquid collecting tank discharge pipeline guide 82 can effectively discharge the residual liquid in the pipeline, avoid the accumulation of residual liquid in the pipeline, prevent pipeline blockage and corrosion, prolong the service life of the pipeline, and also ensure the thoroughness of the discharge and reduce material waste. The liquid collecting tank discharge pipeline guide 82 and the leaked liquid recovery tank 3 are provided with a liquid collecting tank discharge hand valve 84.

[0023] The liquid collecting tank 2 is also provided with a low point discharge port 91 and a low point discharge hand valve 92 for discharging the accumulated liquid at the bottom of the liquid collecting tank 2. The low point discharge port 91 and the low point discharge hand valve 92 are used to discharge the accumulated liquid at the bottom of the liquid collecting tank 2, prevent the long-term accumulation of the accumulated liquid at the bottom, avoid the corrosion of the tank caused by the accumulated liquid, the breeding of bacteria or the influence on the normal operation of the system. Timely discharging the accumulated liquid at the bottom helps to keep the liquid collecting tank 2 clean, improves the service life and operation stability of the equipment, and also ensures the quality of the recovered leaked liquid and reduces impurities in the subsequent process.

[0024] The above describes in detail the leaked liquid recovery system applied to the reciprocating pump of the present application. In this paper, specific examples are applied to explain the principles and implementation methods of the present application. The above examples are only used to help understand the present application and the core idea. It should be pointed out that for ordinary technical personnel in this technical field, without departing from the principles of the present application, the present application can be improved and modified in many ways, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A leakage recovery system for a reciprocating pump, characterized in that, The system includes a reciprocating plunger pump, a liquid collection tank, a leak recovery tank, a nitrogen pressurization system, and a pressure relief system. The reciprocating plunger pump, along with the liquid collection tank, discharges its leak first into the liquid collection tank, with the pump's discharge point higher than the tank's inlet. The liquid collection tank is equipped with the nitrogen pressurization system and the pressure relief system. Leakage entering the tank is pressurized by the nitrogen pressurization system and then discharged into the leak recovery tank. After the leak is discharged, the pressure in the tank is restored to normal by the pressure relief system, allowing subsequent leaks to continue flowing into the tank.

2. The leakage recovery system for a reciprocating pump according to claim 1, characterized in that, The nitrogen pressurization system includes a nitrogen pressurization port, a nitrogen pressurization and pressure reducing valve, a nitrogen pressurization check valve, and a nitrogen pressurization manual valve. The nitrogen enters the liquid collection tank through the nitrogen pressurization port. The nitrogen pressurization and pressure reducing valve is used to regulate the nitrogen pressure. The nitrogen pressurization check valve prevents backflow of liquid in the liquid collection tank. The nitrogen pressurization manual valve controls the on / off of nitrogen.

3. The leakage recovery system for a reciprocating pump according to claim 1, characterized in that, The pressure relief system includes a safety valve pre-operated valve, a safety valve post-operated valve, a safety valve bypass pre-operated valve, a safety valve bypass post-operated valve, and a safety valve relief pipeline check valve, to achieve safe pressure relief of the liquid collection tank.

4. A leakage recovery system for a reciprocating pump according to claim 1, characterized in that, The liquid collection tank is also equipped with a level gauge for monitoring the liquid level. The level gauge is connected to the liquid collection tank through an upper outlet and a lower outlet. A manual valve for the upper outlet and a manual valve for the lower outlet are respectively installed at the upper outlet and the lower outlet of the level gauge.

5. A leakage recovery system for a reciprocating pump according to claim 1, characterized in that, The connecting pipe between the liquid collection tank and the reciprocating plunger pump is equipped with a gravity flow manual valve and a gravity flow check valve to ensure that the leaked liquid can flow into the liquid collection tank by gravity and prevent backflow. A gravity flow manual valve is installed between the gravity flow manual valve and the gravity flow check valve.

6. A leakage recovery system for a reciprocating pump according to claim 1, characterized in that, The pipeline from the liquid collection tank to the leakage recovery tank is equipped with a liquid collection tank drain valve and a liquid collection tank drain line drain. The liquid collection tank drain valve controls the liquid discharge, and the liquid collection tank drain line drain is used to discharge residual liquid in the pipeline.

7. A leakage recovery system for a reciprocating pump according to claim 1, characterized in that, The liquid collection tank is also equipped with a low-point drain port and a low-point drain manual valve for draining the accumulated liquid at the bottom of the liquid collection tank.

8. A leakage recovery system for a reciprocating pump according to claim 1, characterized in that, The liquid collection tank is equipped with a field pressure gauge for real-time monitoring of the pressure inside the tank.

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