A safety valve test pressure balance integrated device

Abstract

The present invention discloses a safety valve test pressure balance integrated device, including a base, two accumulators and a hydraulic cylinder are respectively arranged on the upper end of the base, pipe joints and a bleeder are respectively arranged on the left and right sides of the lower end of the hydraulic cylinder, a pressure gauge, a safety valve and a first straight-through stop valve are respectively arranged on the upper end of the hydraulic cylinder, a pipeline connected to the hydraulic cylinder is arranged on the upper end, the other end of the pipeline away from the hydraulic cylinder is connected to the accumulator return pipe arranged at the lower end thereof, a connecting device is symmetrically arranged on the upper end of the accumulator return pipe, a second straight-through stop valve is arranged on the other end of the pipe joint away from the hydraulic cylinder, a piston is arranged in the hydraulic cylinder, and a piston rod is installed in the piston. The beneficial effects of the present invention are as follows: a plunger-type hydraulic cylinder is provided, which can make the transmission more stable and have a certain impact resistance, and two accumulators are provided at the same time, which can directly increase the upper limit of energy storage, and the accumulator, the hydraulic cylinder and various auxiliary components are integrated together, which can make the whole device more systematic and stable.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum equipment, in particular to a safety valve test pressure balance integrated device. Background Art

[0002] The pressure balancing device is a pressure balancing equipment with an accumulator as its core component. It is connected to the safety valve. When the safety valve is in the open state, the pressure balancing device is in a balanced state; when the safety valve is closed, the pressure in the valve body increases. At this time, the main function of the pressure balancing device is to absorb the increased pressure in the safety valve to maintain the pressure balance in the safety valve; when the safety valve is opened again, the pressure in the valve body will decrease. At this time, the pressure balancing device will release the previously stored pressure and balance the pressure in the safety valve again to keep it at a normal pressure level. It is mainly suitable for various pressure balancing occasions in petroleum equipment.

[0003] The existing pressure balancing device has a single structure, lacks systematicity, and has very limited pressure-bearing capacity. The pressure balancing device will be subjected to a certain amount of pressure during operation. If the structural design is unreasonable, it is likely to damage the internal parts and may even cause an explosion, posing a huge safety hazard. Summary of the invention

[0004] The object of the present invention is to provide a safety valve test pressure balance integrated device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safety valve test pressure balance integrated device, comprising a base, a first accumulator, a hydraulic cylinder and a second accumulator are respectively arranged on the upper end of the base, a pipe joint and a discharger are respectively arranged on the left and right sides of the lower end of the hydraulic cylinder, a pressure gauge is arranged on one side of the upper end of the hydraulic cylinder, a safety valve is arranged on one side of the pressure gauge, a first straight-through stop valve connected to the safety valve is arranged on one side, a pipeline connected to the upper end of the hydraulic cylinder is arranged, the other end of the pipeline away from the hydraulic cylinder is connected to the accumulator return pipe arranged at the lower end thereof, the upper end of the accumulator return pipe is symmetrically provided with connecting devices connected to the first accumulator and the second accumulator, the other end of the pipe joint away from the hydraulic cylinder is provided with a second straight-through stop valve, a piston is arranged in the hydraulic cylinder, and a piston rod is installed in the piston.

[0006] Preferably, fences fixed to the base are provided on the outside of the first energy accumulator, the hydraulic cylinder and the second energy accumulator.

[0007] Preferably, the lower end of the hydraulic cylinder is fixedly connected to the base by bolts.

[0008] Preferably, the first energy accumulator and the second energy accumulator are both fixedly connected to a fixing bracket disposed at the rear end thereof, and the fixing bracket is disposed on the inner wall of the fence.

[0009] Preferably, the upper and lower ends of the pipeline are connected to the hydraulic cylinder and the accumulator return pipe through elbows and threaded right-angle elbows respectively.

[0010] Preferably, the first energy accumulator and the second energy accumulator are both provided with clamps around their peripheries.

[0011] Beneficial Effects

[0012] The safety valve test pressure balance integrated device provided by the present invention is provided with a plunger-type hydraulic cylinder, which can make the transmission more stable and have a certain impact resistance. At the same time, two accumulators are provided to directly increase the upper limit of energy storage. The accumulator, hydraulic cylinder and various auxiliary components are integrated together, which can make the whole device more systematic and stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0014] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0015] Figure 3 It is a cross-sectional structural schematic diagram of the present invention.

[0016] Reference numerals

[0017] 1-base, 2-fence, 3-first accumulator, 4-hydraulic cylinder, 5-second accumulator, 6-fixed bracket, 7-elbow, 8-clamp, 9-pipeline, 10-pipe joint, 11-second straight-through stop valve, 12-threaded right-angle elbow, 13-pressure gauge, 14-safety valve, 15-first straight-through stop valve, 16-connecting device, 17-accumulator return pipe, 18-bolt, 19-bleeder, 20-piston, 21-piston rod. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] Example

[0020] like Figure 1-3As shown, a safety valve test pressure balance integrated device comprises a base 1, wherein a first accumulator 3, a hydraulic cylinder 4 and a second accumulator 5 are respectively arranged on the upper end of the base 1, a pipe joint 10 and a bleeder 19 are respectively arranged on the left and right sides of the lower end of the hydraulic cylinder 4, a pressure gauge 13 is arranged on one side of the upper end of the hydraulic cylinder 4, a safety valve 14 is arranged on one side of the pressure gauge 13, a first straight-through stop valve 15 connected thereto is arranged on one side of the safety valve 14, a pipeline 9 connected thereto is arranged on the upper end of the hydraulic cylinder 4, the other end of the pipeline 9 away from the hydraulic cylinder 4 is connected to an accumulator return pipe 17 arranged at its lower end, a connecting device 16 connected to the first accumulator 3 and the second accumulator 5 is symmetrically arranged on the upper end of the accumulator return pipe 17, a second straight-through stop valve 11 is arranged on the other end of the pipe joint 10 away from the hydraulic cylinder 4, a piston 20 is arranged in the hydraulic cylinder 4, and a piston rod 21 is installed in the piston 20.

[0021] Preferably, a fence 2 fixed to the base 1 is provided on the outside of the first accumulator 3 , the hydraulic cylinder 4 and the second accumulator 5 .

[0022] Preferably, the lower end of the hydraulic cylinder 4 is fixedly connected to the base 1 via bolts 18 .

[0023] Preferably, the first energy accumulator 3 and the second energy accumulator 5 are both fixedly connected to a fixing bracket 6 disposed at the rear ends thereof, and the fixing bracket 6 is disposed on the inner wall of the fence 2 .

[0024] Preferably, the upper and lower ends of the pipeline 9 are connected to the hydraulic cylinder 4 and the accumulator return pipe 17 through an elbow 7 and a threaded right-angle elbow 12 respectively.

[0025] Preferably, clamps 8 are provided around the first energy accumulator 3 and the second energy accumulator 5 .

[0026] The safety valve is connected to the straight-through stop valve. When the safety valve is closed, the pressure inside the valve increases, and the high-pressure oil enters the lower end of the hydraulic cylinder from the safety valve through the second straight-through stop valve, slowly lifting the internal piston rod. Due to the different cross-sectional areas of the piston rod and the piston, each unit volume of high-pressure oil entering will push about ten times the volume of hydraulic oil into the accumulator, which is converted into potential energy for storage. When the safety valve is opened, the pressure inside the valve decreases. At this time, the potential energy in the accumulator is converted into pressure again, pushing the piston to make the oil enter the safety valve, so that the pressure inside the safety valve remains stable. At the same time, the two accumulators can directly increase the upper limit of the device's balance pressure. In addition, there are clamps and fixing devices to fix the accumulator. The entire device is supported by a base at the bottom and protected by a fence on the outside to ensure a good operating environment for the device.

[0027] The hydraulic cylinder has the function of transmitting power and can also buffer the impact caused by the pressure increase of the safety valve. Two sets of accumulators can increase the pressure-bearing capacity of the pressure balance device.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the invention content within the protection scope of the present invention.

Claims

1. A safety valve test pressure balance integrated device, comprising a base (1), characterized in that: The upper end of the base (1) is provided with a first accumulator (3), a hydraulic cylinder (4) and a second accumulator (5), respectively; the left and right sides of the lower end of the hydraulic cylinder (4) are provided with a pipe joint (10) and a bleeder (19), respectively; a pressure gauge (13), a safety valve and a first straight-through stop valve (15) are provided on one side of the pipeline at the upper end of the hydraulic cylinder (4), the safety valve (14) is connected to the first straight-through stop valve (15), and a pipeline (9) connected thereto is provided on the other side of the upper end of the hydraulic cylinder (4), and the lower end of the pipeline (9) is divided into two A hydraulic cylinder (4) has a plurality of hydraulic paths, one of which is connected to an accumulator return pipe (17) at the lower end of the hydraulic cylinder (4), and the other is connected to the pipe joint (10) through a pipe. The upper end of the accumulator return pipe (17) is symmetrically provided with a connecting device (16) connected to the first accumulator (3) and the second accumulator (5). The other end of the pipe where the pipe joint (10) is located, which is away from the hydraulic cylinder (4), is provided with a second straight-through stop valve (11). A piston (20) is provided in the hydraulic cylinder (4), and a piston rod (21) is installed in the piston (20); When the safety valve (14) is closed, the pressure inside the valve increases, and the high-pressure oil flows from the safety valve (14) through the second straight-through stop valve (11) into the lower end of the hydraulic cylinder (4), slowly lifting the internal piston rod. Each time a unit volume of high-pressure oil enters, it pushes ten times the volume of hydraulic oil into the accumulator. When the safety valve (14) is opened, the pressure inside the valve decreases. At this time, the potential energy in the accumulator pushes the piston to allow the oil to enter the safety valve (14).

2. The safety valve test pressure balance integrated device according to claim 1, characterized in that: A fence (2) fixedly mounted on the base (1) is provided on the outside of the first energy accumulator (3), the hydraulic cylinder (4) and the second energy accumulator (5).

3. The safety valve test pressure balance integrated device according to claim 1, characterized in that: The lower end of the hydraulic cylinder (4) is fixedly connected to the base (1) via bolts (18).

4. The safety valve test pressure balance integrated device according to claim 2, characterized in that: The first energy accumulator (3) and the second energy accumulator (5) are both fixedly connected to a fixed bracket (6) arranged at the rear end thereof, and the fixed bracket (6) is arranged on the inner wall of the fence (2).

5. The safety valve test pressure balance integrated device according to claim 1, characterized in that: The other side of the upper end of the hydraulic cylinder (4) is connected to the upper end of the pipeline (9) through an elbow (7), and the lower end of the pipeline (9) is connected to the accumulator return pipe (17) through a threaded right-angle elbow (12).

6. The safety valve test pressure balance integrated device according to claim 1, characterized in that: The first energy accumulator (3) and the second energy accumulator (5) are both provided with clamps (8) around their peripheries.

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