Novel pipeline overpressure protection device

Abstract

The utility model belongs to the field of pipelines, particularly relates to a novel pipeline overpressure protection device, and aims to solve the problems that when an existing device is used, a side groove is directly connected with a water pump, high-pressure fluid easily enters the water pump from the outlet end of the water pump when penetrating through the side groove, internal parts of the water pump are impacted, and the service life of equipment is easily shortened. The device comprises a conveying pipe, a flowmeter and a liquid storage tank are fixedly arranged on the outer wall of the conveying pipe, a first connecting pipe is fixedly communicated between the liquid storage tank and the conveying pipe, a first one-way valve is fixedly arranged on the outer wall of the first connecting pipe, a second connecting pipe is fixedly communicated between the liquid storage tank and the first connecting pipe, and a second one-way valve is fixedly arranged on the outer wall of the second connecting pipe. In the utility model, when the pressure in the conveying pipe is too large, the pressure can be relieved, the condition that high-pressure fluid impacts equipment is avoided, the service life of the equipment is prolonged, the filter screen can be cleaned, the filter screen is prevented from being blocked, and the balance of the pressure intensity inside and outside the liquid storage tank is ensured.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and in particular to a novel pipeline overpressure protection device. Background Technology

[0002] Overpressure protection devices are designed to discharge liquid when the pressure inside a pipeline exceeds the permissible value, preventing production accidents. In the chemical industry, the pressure in liquid transport pipelines is often significantly affected by the external ambient temperature; therefore, limiting the maximum pressure is crucial for safe production.

[0003] A search revealed that patent CN213929954U discloses a novel pipeline overpressure protection device, but this device has the following shortcomings in use:

[0004] 1. When the above device is in use, the side channel and the water pump are directly connected. When the high-pressure fluid passes through the side channel, it is easy to enter the water pump from the outlet end, impacting the internal components of the water pump and reducing the service life of the equipment.

[0005] Therefore, we propose a new type of pipeline overpressure protection device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies where, during use, the side channel is directly connected to the water pump, and high-pressure fluid easily enters the water pump from the outlet end when passing through the side channel, impacting the internal components of the water pump and reducing the service life of the equipment. Therefore, a novel pipeline overpressure protection device is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A novel pipeline overpressure protection device includes:

[0009] A delivery pipe, wherein a flow meter and a liquid storage tank are fixedly mounted on the outer wall of the delivery pipe, a first connecting pipe is fixedly connected between the liquid storage tank and the delivery pipe, a first one-way valve is fixedly mounted on the outer wall of the first connecting pipe, and a second connecting pipe is fixedly connected between the liquid storage tank and the first connecting pipe, a second one-way valve is fixedly mounted on the outer wall of the second connecting pipe.

[0010] An electric push rod is fixedly mounted on the surface of the liquid storage tank. One end of the output shaft of the electric push rod passes through the liquid storage tank and is fixedly mounted on a pressure plate. The pressure plate and the liquid storage tank are slidably connected. A controller is fixedly mounted on the top inner wall of the liquid storage tank. A through hole is opened on the surface of the pressure plate. A third one-way valve is fixedly mounted in the through hole. Two side holes are opened on one side of the liquid storage tank. A filter screen is fixedly mounted in both side holes. The pressure plate is located between the two side holes.

[0011] A cleaning mechanism is installed on one outer wall of the liquid storage tank and is used to clean the filter screen.

[0012] In one possible design, the cleaning mechanism includes a rotating rod that rotatably passes through one side of the outer wall of the storage tank. A cleaning plate and a cam are fixed at both ends of the rotating rod, and a torsion spring is fixed between the cam and the storage tank.

[0013] In one possible design, a positioning rod is fixed to one outer wall of the liquid storage tank, and the positioning rod cooperates with the cleaning plate.

[0014] In one possible design, a silicone ring is fitted around the outer wall of the positioning rod.

[0015] In one possible design, the outer wall of the pressure plate is provided with a sealing groove, and a sealing ring is provided in the sealing groove.

[0016] In one possible design, an observation window is provided on one outer wall of the liquid storage tank.

[0017] In this application, when the internal pressure of the delivery pipe is too high, the first one-way valve is opened, and the fluid flows from the first connecting pipe into the storage tank. When the internal pressure of the delivery pipe returns to normal, the flow meter detects the normal fluid flow and sends a signal to the controller. The controller starts the electric push rod, which drives the pressure plate to descend. After the pressure plate descends below the first connecting pipe, the pressure below the pressure plate increases under the action of the sealing ring, which in turn pushes the fluid through the second one-way valve and flows back to the delivery pipe from the second connecting pipe. During the process of the pressure plate rising, the third one-way valve balances the pressure on the upper and lower sides of the pressure plate. At the same time, the rise of the pressure plate pushes the cam to rotate, and the cam drives the cleaning plate to rotate to clean the filter screen. When the pressure plate is reset, the torsion spring drives the cleaning plate to reset.

[0018] Beneficial effects:

[0019] In this utility model, the novel pipeline overpressure protection device, through the arrangement of multiple structures such as a first one-way valve, a second one-way valve and a pressure plate, can relieve pressure when the pressure in the conveying pipe is too high, and avoids the situation of high pressure fluid impacting the equipment, thus extending the service life of the equipment.

[0020] In this utility model, the novel pipeline overpressure protection device, through the setting of multiple structures such as cleaning plate, rotating rod and cam, can clean the filter screen, avoid filter screen blockage, and ensure pressure balance inside and outside the liquid storage tank;

[0021] In this invention, when the pressure inside the delivery pipe is too high, it can release the pressure and avoid the situation of high-pressure fluid impacting the equipment, thus extending the service life of the equipment. It can also clean the filter screen to prevent filter screen blockage and ensure the pressure balance inside and outside the liquid storage tank. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the overall three-dimensional structure of a novel pipeline overpressure protection device proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the internal structure of the storage tank of a novel pipeline overpressure protection device proposed in this utility model;

[0024] Figure 3 This is an enlarged structural diagram of point A of a novel pipeline overpressure protection device proposed in this utility model.

[0025] In the diagram: 1. Delivery pipe; 2. Flow meter; 3. Liquid storage tank; 4. First connecting pipe; 5. First check valve; 6. Second connecting pipe; 7. Second check valve; 8. Observation window; 9. Electric push rod; 10. Pressure plate; 11. Third check valve; 12. Controller; 13. Sealing ring; 14. Side hole; 15. Filter screen; 16. Rotating rod; 17. Cleaning plate; 18. Cam; 19. Torsion spring; 20. Positioning rod; 21. Silicone ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Reference Figures 1-3 A protective device, comprising:

[0029] A delivery pipe 1 is provided with a flow meter 2 and a liquid storage tank 3 fixedly mounted on its outer wall for real-time monitoring of fluid flow. A first connecting pipe 4 is fixedly connected between the liquid storage tank 3 and the delivery pipe 1. A first one-way valve 5 is fixedly mounted on the outer wall of the first connecting pipe 4, so that fluid can only flow from the delivery pipe 1 to the liquid storage tank 3. A second connecting pipe 6 is fixedly connected between the liquid storage tank 3 and the first connecting pipe 4. A second one-way valve 7 is fixedly mounted on the outer wall of the second connecting pipe 6, so that fluid can only flow from the liquid storage tank 3 to the delivery pipe 1.

[0030] An electric push rod 9 is fixedly mounted on the surface of the liquid storage tank 3. One end of the output shaft of the electric push rod 9 passes through the liquid storage tank 3 and is fixedly mounted on a pressure plate 10. The pressure plate 10 and the liquid storage tank 3 are slidably connected. A controller 12 is fixedly mounted on the inner wall of the top of the liquid storage tank 3. A through hole is opened on the surface of the pressure plate 10. A third one-way valve 11 is fixedly mounted in the through hole, so that the air above the pressure plate 10 flows into the lower part of the pressure plate 10 in one direction to balance the pressure on the upper and lower sides of the pressure plate 10 and prevent fluid from passing through. Two side holes 14 are opened on one side of the liquid storage tank 3 to balance the inside and outside of the liquid storage tank 3. A filter screen 15 is fixedly mounted in both side holes 14 to prevent impurities from entering the liquid storage tank 3. The pressure plate 10 is located between the two side holes 14.

[0031] The cleaning mechanism is located on one side of the outer wall of the liquid storage tank 3 and is used to clean the filter screen 15. The cleaning mechanism includes a rotating rod 16, which rotates through the outer wall of one side of the liquid storage tank 3. A cleaning plate 17 and a cam 18 are fixed at both ends of the rotating rod 16, and a torsion spring 19 is fixed between the cam 18 and the liquid storage tank 3.

[0032] This application can be used in the field of pipelines, or in other fields applicable to this application.

[0033] Example 2

[0034] A novel pipeline overpressure protection device, improved based on Example 1, is applied to the pipeline field.

[0035] In another aspect of this embodiment, a positioning rod 20 is fixedly provided on one side of the outer wall of the liquid storage tank 3. The positioning rod 20 cooperates with the cleaning plate 17, and the positioning rod 20 can position the cleaning plate 17 to ensure the stability of the structure.

[0036] In another aspect of this embodiment, a silicone ring 21 is fitted on the outer wall of the positioning rod 20. The silicone material is soft and can provide a buffer for the reset of the cleaning plate 17, avoiding direct collision between the cleaning plate 17 and the positioning rod 20.

[0037] In another aspect of this embodiment, a sealing groove is provided on the outer wall of the pressure plate 10, and a sealing ring 13 is provided in the sealing groove to ensure the sealing of the structure and to ensure that the pressure plate 10 promotes fluid flow.

[0038] In another aspect of this embodiment, an observation window 8 is provided on one outer wall of the liquid storage tank 3, which allows people to easily understand the situation inside the liquid storage tank 3.

[0039] However, as is well known to those skilled in the art, the working principles and wiring methods of the flow meter 2, the electric actuator 9 and the controller 12 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel pipeline overpressure protection device, characterized in that, include: A delivery pipe (1) is provided with a flow meter (2) and a liquid storage tank (3) respectively fixed on its outer wall. A first connecting pipe (4) is fixedly connected between the liquid storage tank (3) and the delivery pipe (1). A first one-way valve (5) is fixedly provided on the outer wall of the first connecting pipe (4). A second connecting pipe (6) is fixedly connected between the liquid storage tank (3) and the first connecting pipe (4). A second one-way valve (7) is fixedly provided on the outer wall of the second connecting pipe (6). An electric push rod (9) is fixedly mounted on the surface of the liquid storage tank (3). One end of the output shaft of the electric push rod (9) passes through the liquid storage tank (3) and is fixedly mounted on a pressure plate (10). The pressure plate (10) and the liquid storage tank (3) are slidably connected. A controller (12) is fixedly mounted on the top inner wall of the liquid storage tank (3). A through hole is opened on the surface of the pressure plate (10). A third one-way valve (11) is fixedly mounted in the through hole. Two side holes (14) are opened on one side of the liquid storage tank (3). A filter screen (15) is fixedly mounted in both side holes (14). The pressure plate (10) is located between the two side holes (14). A cleaning mechanism is provided on one side of the outer wall of the liquid storage tank (3) for cleaning the filter screen (15).

2. The novel pipeline overpressure protection device according to claim 1, characterized in that, The cleaning mechanism includes a rotating rod (16), which rotates through one side of the outer wall of the liquid storage tank (3). A cleaning plate (17) and a cam (18) are fixed at both ends of the rotating rod (16), and a torsion spring (19) is fixed between the cam (18) and the liquid storage tank (3).

3. A novel pipeline overpressure protection device according to claim 2, characterized in that, A positioning rod (20) is fixedly provided on one side of the outer wall of the liquid storage tank (3), and the positioning rod (20) cooperates with the cleaning plate (17).

4. A novel pipeline overpressure protection device according to claim 3, characterized in that, A silicone ring (21) is fitted on the outer wall of the positioning rod (20).

5. A novel pipeline overpressure protection device according to claim 4, characterized in that, The outer wall of the pressure plate (10) is provided with a sealing groove, and a sealing ring (13) is provided in the sealing groove.

6. A novel pipeline overpressure protection device according to claim 5, characterized in that, The storage tank (3) has an observation window (8) on one side of its outer wall.

Images