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CN-121630836-B - Deep sea power push rod

CN121630836BCN 121630836 BCN121630836 BCN 121630836BCN-121630836-B

Abstract

The invention relates to the technical field of deep sea equipment, in particular to a deep sea power push rod which comprises a cylinder body unit and a rod body, wherein the rod body is in sliding connection with the cylinder body unit in a dynamic sealing mode, the cylinder body unit comprises a main cylinder body with two open ends, a guide module in sealing connection with the front end of the main cylinder body, and a switch control module in sealing connection with the rear end of the main cylinder body, a rod body dirt cleaning structure is arranged at one end, far away from the main cylinder body, of the guide module, two opposite sides of the rod body dirt cleaning structure are communicated with an external deep sea environment along the axial direction of the guide module, and the switch control module is used for controlling the conduction between the interior of the cylinder body unit and the external deep sea environment so as to control the entry of external sea water to push the extension of the rod body. The deep sea power push rod has a simple and reliable structure, and can realize reliable power output in a deep sea environment only by depending on internal and external pressure differences.

Inventors

  • CHEN HU
  • TANG YU
  • YAO QIONG
  • HOU QINGKAI
  • Li Jundie
  • XU XIAO
  • XIONG SHUIDONG
  • HUANG DEYI
  • WANG FUYIN
  • LIU ZUOQIAN
  • CAO CHUNYAN
  • YANG ZIJUN
  • XIA JI

Assignees

  • 中国人民解放军国防科技大学
  • 湖南先进技术研究院

Dates

Publication Date
20260508
Application Date
20260204

Claims (10)

  1. 1. The deep sea power push rod is characterized by comprising a cylinder unit (1) and a rod body (2); the rod body (2) is in sliding connection with the cylinder body unit (1) in a dynamic sealing mode; The cylinder unit (1) comprises a main cylinder body (11) with two open ends, a guide module (12) connected with the front end of the main cylinder body (11) in a sealing way, and a switch control module (13) connected with the rear end of the main cylinder body (11) in a sealing way; one end of the guide module (12) far away from the main cylinder body (11) is provided with a rod body trash cleaning structure (121); Along the axial direction of the guide module (12), two opposite sides of the rod body dirt cleaning structure (121) are communicated with the external deep sea environment; the switch control module (13) is used for controlling the conduction between the interior of the cylinder unit (1) and the external deep sea environment so as to control the entry of external seawater to push the rod body (2) to extend; the rod body trash cleaning structure (121) comprises a baffle ring structure (1211) and a flexible trash cleaning ring (1212) arranged on the baffle ring structure (1211); The inner side of the baffle ring structure (1211) is provided with a first annular groove (1211 a), the radial outer side of the flexible dirt cleaning ring (1212) is embedded in the first annular groove (1211 a), and the radial inner side of the flexible dirt cleaning ring (1212) is contacted with the radial outer side of the rod body (2); The retainer ring structure (1211) is provided with a first retainer ring portion (1211 c); The flexible dirt cleaning ring (1212) is provided with a circumferential groove at one side contacted with the rod body (2) so as to form at least two annular dirt cleaning parts (1212 a) at one side contacted with the rod body (2), wherein the annular dirt cleaning parts (1212 a) are arranged in a cone ring shape; The front annular dirt cleaning part (1212 a) extends into the hollow part of the first baffle ring part (1211 c); a clearance fit mode is adopted between the rear annular dirt cleaning part (1212 a) and the rod body (2), or a communication through hole is arranged on the rear annular dirt cleaning part (1212 a); The included angle between the front annular dirt cleaning part (1212 a) and the rod body (2) is 10-15 degrees, and the included angle between the rear annular dirt cleaning part (1212 a) and the rod body (2) is 80-90 degrees; the rear end of the flexible cleaning ring (1212) is provided with an annular accommodating groove (1212 b), and a space is arranged between the end of the annular cleaning part (1212 a) at the rear and the rear end face of the flexible cleaning ring (1212) along the axial direction of the flexible cleaning ring (1212).
  2. 2. Deep sea power pushrod according to claim 1, characterized in that the end of the rod body (2) extending outside the cylinder unit (1) is the active end, the end of the rod body (2) inside the cylinder unit (1) is the piston end; the end surface of the piston end is larger than the end surface of the acting end; when the switch control module (13) is started, the rod body (2) is based on different pressure differences at two ends so as to realize power output.
  3. 3. The deep sea power pushrod according to claim 1 or 2, characterized in that the baffle ring structure (1211) is provided with water permeable channels (1211 b) for communicating with both sides of the baffle ring structure (1211) in the axial direction, and the water permeable channels (1211 b) are arranged in a staggered manner with the first annular groove (1211 a) along the radial direction of the baffle ring structure (1211).
  4. 4. A deep sea power pushrod according to claim 3, characterized in that the baffle ring structure (1211) is an integral annular structure, or the baffle ring structure (1211) is an annular structure formed by stacking a plurality of coaxial ring bodies in sequence.
  5. 5. A deep sea power pushrod according to claim 3, characterized in that the minimum radial dimension of the radially inner side of the ring structure (1211) is greater than the radial dimension of the corresponding position of the rod body (2).
  6. 6. The deep sea power pushrod according to claim 1 or 2, characterized in that the guiding module (12) further comprises a hollow guiding cylinder (12 a), a first sealing ring (122), a first retainer ring (123) and a guiding sleeve (124) arranged in the guiding cylinder (12 a); the hollow part of the guide cylinder body (12 a) is sequentially provided with a first hollow part, a second hollow part and a third hollow part along the direction from the front end to the rear end of the cylinder body unit (1); The first sealing ring (122) and the first check ring (123) are arranged in the first hollow part, and two axial sides of the first check ring (123) are respectively abutted against the first sealing ring (122) and the guide cylinder body (12 a); The guide sleeve (124) is mounted in the third hollow portion based on an interference fit.
  7. 7. Deep sea power pushrod according to claim 6, characterized in that the piston end of the rod body (2) is provided with a piston structure (21); a second annular groove (21 a) is formed in the outer side of the piston structure (21), and a second sealing ring (21 b) and a second check ring (21 c) are sleeved in the second annular groove (21 a); opposite sides of the second check ring (21 c) are respectively abutted against the second sealing ring (21 b) and the piston structure (21).
  8. 8. Deep sea power pushrod according to claim 7, characterized in that the outer side of the piston structure (21) is nested with a wear ring (21 d).
  9. 9. The deep sea power pushrod according to claim 8, characterized in that the first seal ring (122) and the second seal ring (21 b) are both U-shaped seal rings and the material used is fluororubber; The first check ring (123) and the second check ring (21 c) are made of polytetrafluoroethylene; the material adopted by the anti-abrasion ring (21 d) is phenolic resin reinforced by cotton fabric.
  10. 10. Deep sea power pushrod according to claim 1 or 2, characterized in that the switch control module (13) comprises an end cap (131), a throttle valve (132) and a control switch (133); The center of the end cover (131) is provided with an input channel penetrating through two opposite sides of the end cover; The throttle valve (132) and a control switch (133) are installed at opposite ends of the input passage, wherein the throttle valve (132) is arranged in the cylinder unit (1); The control switch (133) is one of an electromagnetic valve switch and a pressure rupture disk.

Description

Deep sea power push rod Technical Field The invention relates to the technical field of deep sea equipment, in particular to a deep sea power push rod. Background In the process of deep sea exploration and development, the technical field of deep sea equipment engineering plays a crucial role. The deep sea power push rod is used as one of the key linear power output devices, is widely applied to the operation under various ocean deep environments, and has the common forms of mainly electric and hydraulic, and respectively depends on an underwater motor or an underwater hydraulic motor to provide power. However, the deep sea environment is extremely complex, and high pressure is one of its significant features. In such circumstances, in order to ensure that the power plant can operate normally and output sufficient power, the design of the plant tends to become extremely complex, while the energy consumption is relatively large. For a drive system powered by an electric motor. In terms of high thrust output, such systems typically require the provision of pressure compensation devices due to the effects of high pressures in the deep sea. This not only complicates the system structure, but also increases the strength requirements, which in turn leads to a substantial increase in the volume and weight of the overall device. In general, the required thrust requirement can be met only under medium-high pressure conditions, which puts high demands on the output power capacity of the battery and the like. For example, in a working scenario requiring high thrust such as deep sea oil and gas exploitation, the motor driving system needs to be finely designed to overcome a high pressure environment and provide enough power, and meanwhile, the material selection and the processing technology are more severe to ensure the structural strength, which clearly increases the complexity and the cost of the system. Moreover, greater power consumption means that a larger capacity battery is required to maintain operation, which further limits the cruising ability and overall performance of the device. For a drive system with hydraulic pressure as the power source. Although it has certain advantages in realizing high thrust, the composition of the hydraulic system is extremely complex. The hydraulic control system not only needs a pumping system to provide stable hydraulic power, but also relates to complex oil circuit design to ensure reasonable distribution and flow of hydraulic oil, and meanwhile, the whole process is accurately controlled by an electric control system. The cooperation of these components causes the hydraulic system to occupy a lot of space and weight, resulting in poor reliability of the system. For example, under the complicated topography of deep sea and environmental conditions, hydraulic system's pipeline receives external force to assault or corrode easily, in case trouble such as oil circuit leakage appears, not only the maintenance degree of difficulty is big, can lead to whole power device to become invalid moreover, seriously influences the normal clear of deep sea operation. In addition, the deep sea working environment has the characteristics of low temperature, easy corrosion, microorganism enrichment and the like, and the deep sea working environment brings a plurality of challenges to the normal work of the deep sea power push rod. On the one hand, due to the high environmental pressure in the deep sea, the piston rod seal faces a huge test, and the condition of seal failure is very easy to occur. Once the seal fails, seawater and the abundant microorganisms invade, causing problems of wear, seizing, etc. On the other hand, the piston rod needs to extend out of the piston rod during working, and the outer surface of the piston rod is extremely easy to be adhered by external dirt or microorganisms to cause unsmooth operation, so that the overall use performance is affected. Therefore, the existing deep sea power push rod has certain limitations in dealing with the deep sea complex environment whether the existing deep sea power push rod is electric or hydraulic. How to develop a power push rod which has a relatively simple structure, low energy consumption and high reliability and can adapt to the severe deep sea environment becomes an important problem to be solved in the technical field of the current deep sea equipment engineering. Disclosure of Invention The invention aims to provide a deep sea power push rod. In order to achieve the aim, the invention provides a deep sea power push rod, which comprises a cylinder unit and a rod body; The rod body is in sliding connection with the cylinder body unit in a dynamic sealing mode; The cylinder unit comprises a main cylinder body with two open ends, a guide module connected with the front end of the main cylinder body in a sealing way, and a switch control module connected with the rear end of the main cylinder body in a sealing way; A rod body di