Sectional automatic adjustment safety overflow control system

Abstract

The invention discloses a segmented automatic adjustment safety overflow control system, and relates to the technical field of petroleum drilling pressure test mechanical equipment, the segmented automatic adjustment safety overflow control system comprises a main input pipeline, the main input pipeline is connected with a plurality of overflow control assembly pipelines in parallel, the output ends of the plurality of overflow control assembly pipelines are jointly connected with a main output pipeline, and the main output pipeline is connected with an overflow valve. Different overflow pressures are set by arranging a plurality of groups of pressure regulating valves and can be specifically set according to use requirements, the second reversing valve can select a manual mode or an automatic mode according to requirements, the safe overflow pressure can be remotely controlled and automatically adjusted, potential safety hazards are reduced, and the efficiency is improved.

Description

Technical Field

[0001] The invention is applicable to the technical field of oil drilling pressure testing mechanical equipment, in particular to a segmented automatic adjustment safety overflow control system. Background Art

[0002] The safety relief valve in the existing pressure test system can only adjust a fixed pressure overflow protection value, which requires manual adjustment and can only be adjusted to the maximum working pressure value of the system. For example, the pressure value of the pressure test system is 0MPa-200MPa, and the existing safety relief valve can only be adjusted to a pressure level of up to 200MP to protect the safety of the pressure test system and the drilling workpiece being tested. During the pressure test, if a drilling workpiece requiring a pressure of 70MPa is tested, once the system pressure exceeds 70MPa, it will cause damage to the pressure test system and the drilling workpiece being tested. Different pressure levels are required in the oil drilling pressure test work. The conventional pressure values ​​include 14MPa, 20MPa, 35MPa, 70MPa, 105MPa, 140MPa, 200MPa, etc., so the existing safety relief valve cannot meet the pressure test requirements. Summary of the invention

[0003] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the present invention proposes a segmented automatic adjustment safety overflow control system, including a total input pipeline, the total input pipeline is connected in parallel with a plurality of overflow control component pipelines, the output ends of the plurality of overflow control component pipelines are commonly connected to a total output pipeline, the total output pipeline is connected to an overflow valve, the overflow valve is connected to a pressure pipeline and an overflow port, the overflow control component pipeline includes a pressure regulating valve, a pressure gauge, a first reversing valve and a second reversing valve, the pressure regulating valve intake pipeline is connected to the total input pipeline, the output pipeline is connected to a pressure gauge and a second reversing valve, and the second reversing valve is connected to the first reversing valve; One end of the second reversing valve is three connection ends S, P, and R, wherein R is connected as a closed end, and the other end is two connection ends A and B. The second reversing valve is connected to the input end of the first reversing valve through two output ends A and S, the P end is the input end, and the B end is the output end to the total output pipeline; the first reversing valve also has a closed end and an exhaust end; The second reversing valve is divided into three working modes: open position, middle position and closed position, and cooperates with the first reversing valve to meet different working modes. When one overflow control component pipeline is in the open position, the rest are in the closed position to prevent leakage.

[0004] The present invention is further configured as follows: when the second reversing valve is in an open position, the gas enters the second reversing valve through the P end and enters the total output pipeline through the B end.

[0005] The present invention is further configured as follows: when the second reversing valve is in the middle position, the gas in the total output pipeline enters the first reversing valve via the B end and the S end. At this time, the internal path of the first reversing valve is connected to the output end, so that the gas can be discharged.

[0006] The present invention is further configured as follows: when the second reversing valve is in the closed position, the gas enters the first reversing valve directly from the A end through the P end, and the gas entering the total output pipeline from other overflow control component pipelines when the pipelines are in the open position enters the first reversing valve through the B end and the S end. At this time, the internal path of the first reversing valve is connected to the closed end, which can prevent gas leakage.

[0007] The present invention is further configured as follows: the overflow valve is a gas-controlled overflow valve.

[0008] The present invention is further configured as follows: the first reversing valve is a pneumatically controlled reversing valve, and the second reversing valve can be a manual or automatic reversing valve.

[0009] The beneficial technical effect of the present invention is: by setting multiple groups of pressure regulating valves to set different overflow pressures, the specific settings can be made according to the use requirements, and both gas and liquid media can be used. The first reversing valve and the second reversing valve can also form a self-locking mode to prevent pipeline leakage. The second reversing valve can be selected in manual or automatic mode as needed, and the safety overflow pressure can be automatically adjusted by remote control. There is no need for operators to work in a high-pressure environment (0MPa-200MPa), which reduces safety hazards. The use of automatic mode can ensure that the safety overflow pressure does not need to be manually adjusted for each test, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a system diagram of the present invention.

[0011] Figure 2 This is a schematic diagram of the open position of the second reversing valve of the present invention.

[0012] Figure 3 This is a schematic diagram of the middle position of the second reversing valve of the present invention.

[0013] Figure 4 This is a schematic diagram of the closed position of the second reversing valve of the present invention.

[0014] 1. Main input pipeline, 2. Pressure regulating valve, 3. Pressure gauge, 4. First reversing valve, 5. Second reversing valve, 6. Overflow valve, 7. Pressure pipeline, 8. Overflow port. DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0016] The present invention proposes a segmented automatic adjustment safety overflow control system, comprising a total input pipeline 1, wherein the total input pipeline 1 is connected in parallel with a plurality of overflow control component pipelines, wherein the output ends of the plurality of overflow control component pipelines are commonly connected to a total output pipeline, wherein the total output pipeline is connected to an overflow valve 6, wherein the overflow valve 6 is connected to a pressure pipeline 7 and an overflow port 8, wherein the overflow control component pipeline comprises a pressure regulating valve 2, a pressure gauge 3, a first reversing valve 4 and a second reversing valve 5, wherein an air inlet pipeline of the pressure regulating valve 2 is connected to the total input pipeline 1, The output pipeline is connected with a pressure gauge 3 and a second reversing valve 5, and the second reversing valve 5 is connected with the first reversing valve 4; one end of the second reversing valve 5 is three connection ends S, P, and R, of which R is connected as a closed end, and the other end is two connection ends A and B. The second reversing valve 5 is connected to the input end of the first reversing valve 4 through the two output ends A and S, the P end is the input end, and the B end is the output end to the total output pipeline; the first reversing valve 4 also has a closed end and an exhaust end; the second reversing valve 5 is divided into an open position, a neutral position, and a neutral position. When one overflow control assembly pipeline is in the open position, the other is in the closed position to prevent leakage; when the second reversing valve 5 is in the open position, the gas enters the second reversing valve 5 through the P end and enters the total output pipeline through the B end; when the second reversing valve 5 is in the middle position, the gas in the total output pipeline enters the first reversing valve 4 through the B end through the S end. At this time, the internal path of the first reversing valve 4 is connected to the output end, and the gas can be discharged; when the second reversing valve 5 is in the closed position, the gas enters the first reversing valve 4 directly from the A end through the P end, and the gas entering the total output pipeline from other overflow control assembly pipelines in the open position enters the first reversing valve 4 through the B end through the S end. At this time, the internal path of the first reversing valve 4 is connected to the closed end, which can prevent gas leakage; the overflow valve 6 is an air-controlled overflow valve; the first reversing valve 4 is an air-controlled reversing valve, and the second reversing valve 5 can be a manual or automatic reversing valve.

[0017] By setting multiple groups of pressure regulating valves 2 to set different overflow pressures, it can be specifically set according to usage requirements. The second reversing valve 5 can be selected in manual or automatic mode as needed. The safety overflow pressure can be automatically adjusted by remote control, and operators are not required to work in a high-pressure environment (0MPa-200MPa), thereby reducing safety hazards. The automatic selection can ensure that the safety overflow pressure does not need to be manually adjusted for each test, thereby improving efficiency.

[0018] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0019] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0022] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A segmented automatic adjustment safety overflow control system, comprising a main input pipeline (1), characterized in that: The total input pipeline (1) is connected in parallel with a plurality of overflow control component pipelines, the output ends of the plurality of overflow control component pipelines are commonly connected to the total output pipeline, the total output pipeline is connected to a overflow valve (6), the overflow valve (6) is connected to a pressure pipeline (7) and an overflow port (8), the overflow control component pipeline comprises a pressure regulating valve (2), a pressure gauge (3), a first reversing valve (4) and a second reversing valve (5), the air inlet pipeline of the pressure regulating valve (2) is connected to the total input pipeline (1), the output pipeline is connected to a pressure gauge (3) and a second reversing valve (5), and the second reversing valve (5) is connected to the first reversing valve (4); One end of the second reversing valve (5) is three connection ends S, P, and R, wherein R is connected as a closed end, and the other end is two connection ends A and B. The second reversing valve (5) is connected to the input end of the first reversing valve (4) via two output ends A and S, wherein the P end is the input end and the B end is the output end to the total output pipeline; the first reversing valve (4) also has a closed end and an exhaust end; The second reversing valve (5) is divided into three working modes: open position, middle position and closed position, and cooperates with the first reversing valve (4) to meet different working modes. When one overflow control component pipeline is in the open position, the rest are in the closed position to prevent leakage.

2. The segmented automatic adjustment safety overflow control system according to claim 1 is characterized in that: When the second reversing valve (5) is in the open position, the gas enters the second reversing valve (5) through the P end and enters the main output pipeline through the B end.

3. The segmented automatic adjustment safety overflow control system according to claim 1 is characterized in that: When the second reversing valve (5) is in the middle position, the gas in the total output pipeline enters the first reversing valve (4) via the B end and the S end. At this time, the internal path of the first reversing valve (4) is connected to the output end, so that the gas can be discharged.

4. The segmented automatic adjustment safety overflow control system according to claim 1 is characterized in that: When the second reversing valve (5) is in the closed position, the gas enters the first reversing valve (4) directly from the A end through the P end. The gas entering the total output pipeline from other overflow control component pipelines when the pipeline is in the open position enters the first reversing valve (4) through the B end and the S end. At this time, the internal path of the first reversing valve (4) is connected to the closed end, which can prevent gas leakage.

5. The segmented automatic adjustment safety overflow control system according to claim 1 is characterized by: The overflow valve (6) is a gas-controlled overflow valve.

6. The segmented automatic adjustment safety overflow control system according to claim 1 is characterized by: The first reversing valve (4) is a pneumatically controlled reversing valve, and the second reversing valve (5) can be a manual or automatic reversing valve.

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