A deepwater operation gas drive pressure maintaining automatic compensation device and method

Abstract

The present invention discloses a deepwater operation gas-driven pressure-maintaining automatic compensation device and method thereof, comprising a plurality of power boxes (5) and a controller, wherein the power boxes (5) are installed on the deepwater operation equipment, and the controller is electrically connected to the power boxes (5). The device is characterized in that it also comprises an oil supply mechanism, a plurality of boosting oil tanks (4) and a switch mechanism, wherein the plurality of boosting oil tanks (4) are installed on the deepwater operation equipment, the oil supply mechanism is connected to the plurality of boosting oil tanks (4) through the switch mechanism, and the plurality of boosting oil tanks (4) are connected to the plurality of power boxes (5). The present invention provides a deepwater operation gas-driven pressure-maintaining automatic compensation device, which monitors and adjusts the internal pressure of the power box in real time through an oil level indicator, does not rely on manpower, has high efficiency and strong reliability, and the oil supply mechanism timely performs pressure compensation on the power box to prevent the deepwater operation power box from invading mud.

Description

Technical Field

[0001] The invention relates to a deepwater operation gas drive pressure maintaining automatic compensation device and method thereof, belonging to the technical field of engineering machinery. Background Art

[0002] Pressure compensation devices are widely used in deepwater operation equipment, because the sealing device in the power box can be damaged due to external impact, high-pressure mud intrusion, etc. As the drilling depth increases, the pressure of the external deep water on the deepwater operation equipment gradually increases. The pressure compensation technology can achieve that the internal pressure of the power box of the deepwater operation equipment is slightly greater than or equal to the external mud pressure.

[0003] When the current pressure compensation system is used on deepwater operating equipment, oil is often replenished manually according to the construction depth or passively through a bladder as the external pressure changes. It is unable to monitor and adjust the internal pressure of the power box in real time, has low efficiency and poor reliability, and cannot guarantee timely pressure compensation of the power box, resulting in mud intrusion into the power box of the deepwater operating equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a deep-water operation gas-driven pressure-maintaining automatic compensation device and method, which can monitor and adjust the internal pressure of the power box in real time without relying on manpower, with high efficiency and strong reliability, and can timely compensate the pressure of the power box to avoid mud intrusion into the deep-water operation power box.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a deep-water operation gas-driven pressure-maintaining automatic compensation device, comprising a plurality of power boxes and controllers, the power boxes are installed on the deep-water operation equipment, and the controllers are electrically connected to the power boxes; it also includes an oil supply mechanism, a plurality of boosting oil tanks and a switch mechanism, the plurality of boosting oil tanks are installed on the deep-water operation equipment, the oil supply mechanism is connected to the plurality of boosting oil tanks through the switch mechanism, and the plurality of boosting oil tanks are connected to the plurality of power boxes.

[0006] Preferably, the oil supply mechanism includes an air compressor, an oil tank and a gas-liquid booster pump, the air compressor is linked to the gas-liquid booster pump, the oil inlet of the gas-liquid booster pump is connected to the oil tank, and the oil outlet of the gas-liquid booster pump is connected to several booster oil tanks through a switch mechanism.

[0007] Preferably, the switch mechanism is a ball valve or a solenoid valve, and the oil outlet of the gas-liquid booster pump is connected to a plurality of booster oil tanks through the ball valve or the solenoid valve.

[0008] Preferably, a one-way valve is included, which is installed between the switch mechanism and the boost tank.

[0009] Preferably, it comprises an oil level indicator and an oil level display for displaying the oil level, the oil level indicator is mounted on the boost oil tank, and the oil level display is electrically connected to the controller.

[0010] A deepwater operation gas drive pressure maintenance automatic compensation method, using the above-mentioned device, comprising:

[0011] The oil levels of the n booster tanks are H1, H2, ..., Hn, where n is a positive integer;

[0012] 1) Compare the oil levels of n booster tanks with the oil levels of other booster tanks in turn. If the oil levels of n booster tanks are equal to those of more than 2 / 3 of the other booster tanks within the set error range, proceed to step 2), otherwise shut down;

[0013] 2) Check in turn whether the oil level of n boost tanks is greater than 30%. If so, proceed to step 1). If not, add oil to the boost tank through the oil supply mechanism.

[0014] The beneficial effects achieved by the present invention are:

[0015] The present invention provides an automatic compensation device for maintaining pressure with air drive for deepwater operation. The device monitors and adjusts the internal pressure of a power box in real time through an oil level indicator. The device does not rely on manpower and has high efficiency and strong reliability. The oil supply mechanism timely compensates the pressure of the power box to prevent the deepwater operation power box from invading mud. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the device;

[0017] Figure 2 It is the oil circuit diagram of the first embodiment of the present device.

[0018] In the figure: 1-air compressor; 2-oil tank; 3-gas-liquid booster pump; 4-boosting oil tank; 5-power box; 6-ball valve; 7-check valve; 8-oil level indicator; 9-oil level display; 401-left chamber of boosting oil tank; 402-right chamber of boosting oil tank; 501-left power box; 502-right power box. DETAILED DESCRIPTION

[0019] The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and are not intended to limit the protection scope of the present invention.

[0020] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention, they are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, if the descriptions of "first", "second", etc. are involved in the present invention, they are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0022] Embodiment 1

[0023] A deepwater operation gas-driven pressure-maintaining automatic compensation device comprises a plurality of power boxes 5 and a controller. The power boxes 5 are mounted on the deepwater operation equipment and the controller is electrically connected to the power boxes 5. The device also comprises an oil supply mechanism, a plurality of boosting oil tanks 4 and a switch mechanism. The plurality of boosting oil tanks 4 are mounted on the deepwater operation equipment. The oil supply mechanism is connected to the plurality of boosting oil tanks 4 through the switch mechanism, and the plurality of boosting oil tanks 4 are connected to the plurality of power boxes 5.

[0024] Furthermore, in this embodiment, the oil supply mechanism includes an air compressor 1, an oil tank 2 and an air-liquid booster pump 3. The air compressor 1 is linked to the air-liquid booster pump 3. The oil inlet of the air-liquid booster pump 3 is connected to the oil tank 2, and the oil outlet of the air-liquid booster pump 3 is connected to a plurality of booster tanks 4 through a switch mechanism. The power box 5 is used to provide power for the deepwater operation equipment. The air compressor 1 drives the air-liquid booster pump to rotate so that the oil supply mechanism replenishes oil to the booster tank 4, so that the equipment operates stably and the working efficiency is more efficient.

[0025] Furthermore, in this embodiment, the switch mechanism is a ball valve 6 or a solenoid valve, and the oil outlet of the gas-liquid booster pump 3 is connected to several booster tanks 4 through the ball valve 6 or the solenoid valve. The one-way valve 6 controls the feed direction of the oil circuit to prevent the hydraulic oil from flowing back, and the ball valve 7 controls the opening and closing of the feed oil circuit. The ball valve 6 or the solenoid valve controls whether the oil supply mechanism can replenish oil. The ball valve 6 can be manual or electric, and can be selected according to needs, so that the logical relationship of the present invention is more rigorous and tight, and the stable operation of the entire device is guaranteed. The oil tank 2, the gas-liquid booster pump 3, the booster tank 4 and the power box 5 constitute the main hydraulic oil circuit of the compensation system. The air compressor 1 drives the gas-liquid booster pump 3 to pump the hydraulic oil in the booster tank 2 to the pressure-maintaining tank 4. The pressure-maintaining tank 4 supplies oil to the power box 5, so that the inside of the power box 5 maintains a certain pressure to resist external deep water intrusion.

[0026] Furthermore, the present embodiment includes a one-way valve 7 , which is installed between the switch mechanism and the boost oil tank 4 .

[0027] Furthermore, the present embodiment includes an oil level indicator 8 and an oil level display 9 for displaying the oil level. The oil level indicator 8 is installed on the boost oil tank 4, and the oil level display 9 is electrically connected to the controller. The operator observes the oil levels of the two chambers of the pressure-maintaining oil tank 4 through the oil level display 9. When the oil level is lower than a specific value, the left power box and the right power box are replenished with oil respectively through the switch ball valve / solenoid valve;

[0028] A deepwater operation gas drive pressure maintenance automatic compensation method, using the above-mentioned device, comprising:

[0029] The oil levels of the n boost oil tanks 4 are H1, H2, ..., Hn, respectively, where n is a positive integer;

[0030] 1) Compare the oil levels of n boost oil tanks 4 with the oil levels of other boost oil tanks 4 in turn. If the oil levels of n boost oil tanks 4 are equal to those of more than 2 / 3 of the other boost oil tanks 4 within the set error range, proceed to step 2, otherwise shut down;

[0031] 2) Check in sequence whether the oil level of n boost oil tanks 4 is greater than 30%. If so, proceed to step 1; if not, replenish oil to the boost oil tank 4 through the oil supply mechanism.

[0032] In this embodiment, the boost tank 4 includes a left boost tank chamber 401 and a right boost tank chamber 402, and the plurality of power boxes 5 are a left power box 501 and a right power box 502. The left boost tank chamber 401 is connected to the left power box 501, and the right boost tank chamber 402 is connected to the right power box 502.

[0033] Deepwater operation equipment such as a double-wheel groove milling machine, the booster tank 4 is an oil tank, an air compressor 1, an oil tank 2, a gas-liquid booster pump 3, a booster tank 4, a power box 5, a ball valve 6, a solenoid valve, a one-way valve 7, an oil level indicator 8 and an oil level display 9. There are many models of the above components that can be used in the prior art. Those skilled in the art can choose a suitable model according to actual needs, and this embodiment will not cite examples one by one.

[0034] This system actively adjusts the internal pressure of the power box when operating in deep water at 30-50m. The operator / controller detects the oil leakage of the left chamber 401 and the right chamber 402 of the booster tank through the oil level display 9. When the controller is started, it is found that the oil level H of the left chamber 401 of the booster tank is 1 Or when the oil level in the right chamber 402 of the boost tank is lower than 30%, the operator should stop the machine and add oil; 1 Or when there is a difference in the oil level of the right chamber 402 of the boost tank, the transmission box corresponding to the side with the lower liquid level is judged to be leaking oil, and the drill is lifted and maintained.

[0035] Embodiment 2

[0036] Different from the first embodiment, the deepwater working equipment in this embodiment, such as a four-wheel slot milling machine, includes four power boxes 5 and a controller. The power box 5 is installed on the deepwater working equipment, and the controller is electrically connected to the power box 5; it also includes an oil supply mechanism, four boosting oil tanks 4 and a switch mechanism. The boosting oil tank 4 is installed on the deepwater working equipment. The oil supply mechanism is connected to the four boosting oil tanks 4 through the switch mechanism, and each boosting oil tank 4 is connected to a power box 5.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A deepwater operation gas drive pressure maintaining automatic compensation device, comprising a plurality of power boxes (5) and a controller, wherein the power boxes (5) are installed on the deepwater operation equipment, and the controller is electrically connected to the power boxes (5), characterized in that: It also includes an oil supply mechanism, a plurality of boosting oil tanks (4) and a switch mechanism, wherein the plurality of boosting oil tanks (4) are installed on the deepwater operation equipment, the oil supply mechanism is connected to the plurality of boosting oil tanks (4) through the switch mechanism, and the plurality of boosting oil tanks (4) are connected to the plurality of power boxes (5); The oil supply mechanism comprises an air compressor (1), an oil tank (2) and a gas-liquid booster pump (3); the air compressor (1) is linked to the gas-liquid booster pump (3); an oil inlet of the gas-liquid booster pump (3) is connected to the oil tank (2); and an oil outlet of the gas-liquid booster pump (3) is connected to a plurality of booster oil tanks (4) via a switch mechanism; It comprises a one-way valve (7), which is installed between the switch mechanism and the boost oil tank (4); The oil level indicator (8) comprises an oil level indicator (8) and an oil level display (9) for displaying the oil level. The oil level indicator (8) is mounted on the boost oil tank (4), and the oil level display (9) is electrically connected to a controller.

2. The deepwater operation gas drive pressure maintaining automatic compensation device according to claim 1 is characterized in that: The switch mechanism is a ball valve (6) or a solenoid valve, and the oil outlet of the gas-liquid booster pump (3) is connected to a plurality of booster oil tanks (4) via the ball valve (6) or the solenoid valve.

3. A deepwater operation gas drive pressure maintenance automatic compensation method, characterized in that: The device according to any one of claims 1 to 2 comprises: The oil levels of the n boost oil tanks (4) are H1, H2, ..., Hn, respectively, where n is a positive integer; 1) Compare the oil levels of the n boost oil tanks (4) with the oil levels of the other boost oil tanks (4) in turn. If the oil levels of the n boost oil tanks (4) are equal to those of more than 2 / 3 of the other boost oil tanks (4) within a set error range, proceed to step 2), otherwise, stop the machine; 2) Checking in sequence whether the oil level of n boost oil tanks (4) is greater than 30%, if so, proceeding to step 1); if not, replenishing oil to the boost oil tank (4) through the oil supply mechanism.

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