Device and method for mechanically auxiliary opening and closing cabin of water pressure test cabin with thread type sealing
By designing the mechanical auxiliary switch cabin device, the problems of manpower consumption, torque control and stuck during locking/opening of the traditional spiral-shaped hydraulic test cabin are solved, and efficient and reliable single-person operation and test efficiency are achieved. in different hydraulic test chambers.
Patent Information
- Application Number
- CN202411341859.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2024-12-27
AI Technical Summary
The locking/opening process of the traditional spiral-shaped hydraulic test chamber consumes labor and time, the operating torque cannot be quantified and controlled, the opening device is prone to stuck, and the old hydraulic test chamber cannot use mechanical auxiliary switch cabin devices.
A mechanical auxiliary switch cabin device is designed, including an auxiliary switch cabin ring connector, an outer opening positioning fixture, an inner opening positioning fixture, a locking/opening converter and a torque measuring member, and a standardized operation process is realized through mechanical design. , quantify the control torque, and is suitable for different hydraulic chamber sizes and pressure levels.
It realizes single-person operation, fast locking/opening, reduces labor costs, improves test efficiency, avoids torque interference or lack, solves the problem of stuckness, and is suitable for old hydraulic test chambers.
Smart Images
Figure CN119196150A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of marine water pressure detection and testing, and in particular to a mechanical auxiliary switch compartment device and method for a water pressure test compartment with spiral seal. Background Art
[0002] The water pressure test is a commonly used environmental adaptability test method for marine instruments during the research and development process. It uses water as a medium to apply a specified pressure to the instrument, simulates underwater pressure conditions in the laboratory, analyzes the impact of deep-sea pressure on the supporting capacity of sealed shells of different materials, optimizes and screens the sealing form, tests the weight and buoyancy of the water-absorbing floating body material, and then evaluates the overall expected operating performance of deep-sea underwater instruments. Through such tests, potential failures of the instrument can be stimulated, and early failures such as unqualified materials, components, and inappropriate process defects in the design and manufacturing process can be discovered, thereby improving the adaptability of the instrument to the deep-water pressure environment and reducing the risk of failure in field applications.
[0003] At present, various marine research institutes, universities and production and R&D enterprises across the country have built pressure test vessels of different sizes and specifications from different eras, with test pressures ranging from 1MPa (equivalent to 100 meters of water depth) to 120MPa (equivalent to 12,000 kilometers of water depth), which can meet the global marine underwater environment testing needs. The core device for conducting water pressure tests is the water pressure test chamber, and its working principle of boosting is generally to place the instrument under test in it, complete the structural sealing, and then control the booster pump to inject water into it to reach the predetermined test pressure.
[0004] The mainstream sealing forms of water pressure test chambers at home and abroad are divided into spiral seals, shear block seals, quick-opening rotating block seals and clamp seals. Among them, spiral seals, as a traditional mechanical seal form, have the characteristics of wide application range and high reliability, and are frequently used in various laboratories. The sealing process is as follows: first put the sealing end cover into the water pressure test chamber, then rotate the spiral seal ring on the water pressure test chamber, and then tighten it manually through the horizontal push rod to press the sealing end cover to achieve the locking function. After the test, the spiral seal ring is loosened by manually rotating the horizontal push rod, and the spiral seal ring and the sealing end cover are removed one by one to complete the opening function.
[0005] The above-mentioned traditional spiral seal water pressure test chamber locking / opening method has the following problems or shortcomings:
[0006] 1. It consumes manpower and time. The traditional sealing process is to manually rotate the spiral sealing ring clockwise / counterclockwise through a horizontal push rod to compress / disengage the sealing end cover to achieve the locking / opening process. During the work, 3 to 4 technicians are required to operate at the same time, which greatly occupies the laboratory's human resources. At the same time, the operation process needs to be implemented based on experience. Due to the different proficiency of technicians, the preparation time for each test will vary, thereby extending the test time. When there are fewer skilled technicians on site, it is impossible to ensure that the operation is completed in a timely and effective manner, which reduces the test efficiency.
[0007] 2. The operating torque cannot be quantitatively controlled. Since the traditional sealing process is operated manually, the entire implementation process depends entirely on the experience and physical control of the technicians. It is temporarily impossible to form a unified process, resulting in different locking torques for each test. In addition, the pressure level of each test is different. In order to ensure that the water pressure test chamber does not leak or drop in pressure during the high-pressure stage, most technicians will use excessive torque locking methods. In the long run, this will cause cumulative damage to the spiral seal ring and the water pressure test chamber, reducing the service life of the equipment.
[0008] 3. The opening device is prone to jamming. After a long high-pressure test, the relative torque between the spiral seal ring and the water pressure test chamber is large, which is prone to jamming. At this time, it is impossible to loosen the spiral seal ring by the horizontal push rod manually, and the spiral seal ring can only be forcibly opened by waiting for a long time for stress release or greatly increasing the number of workers.
[0009] 4. The old hydraulic test chamber cannot use the mechanical auxiliary opening and closing device. For the newly built hydraulic test chamber, in order to facilitate the disassembly and assembly of the spiral seal ring, the fixing holes for the outer opening positioning fixtures are reserved on the upper end face of the hydraulic test chamber at the beginning of the design. However, the old hydraulic test chamber in service cannot be directly modified to add corresponding fixing holes on its upper end face, so it is impossible to add the mechanical auxiliary opening and closing device to implement the locking / opening process of the spiral seal ring, and it still needs to be operated in the traditional way. Summary of the invention
[0010] The present invention aims at the shortcomings of the existing spiral pattern water pressure test chamber switch technology, and provides a spiral pattern sealed water pressure test chamber mechanical auxiliary switch chamber device and method, which fundamentally solves the problems of time and manpower cost of locking / opening the hatch cover of the spiral pattern sealed water pressure test chamber in the field of marine water pressure detection test, the problem that the operating torque cannot be quantified and controlled, the problem that the opening device is easy to get stuck, and the problem that the old water pressure test chamber cannot use the mechanical auxiliary switch chamber device, improves the existing spiral pattern sealed water pressure test chamber locking / opening method, and provides a new locking / opening device and use method for the spiral pattern test chamber. The present invention has the characteristics of simple structure, convenient manufacturing, and helpful to improve the test efficiency.
[0011] The present invention is implemented by the following technical scheme: a mechanical auxiliary switch compartment device of a water pressure test chamber with a spiral seal, wherein the main compartment of the water pressure test comprises a water pressure test chamber, a sealing end cover and a spiral seal ring, wherein the sealing end cover is located in the water pressure test chamber, and the spiral seal ring is threadedly installed on the water pressure test chamber, and the spiral seal ring is tightened to seal the spiral seal ring and the water pressure test chamber, and the seal end cover is pressed down to seal the bottom of the spiral seal ring and the seal end cover, and the bottom plane of the seal end cover and the water pressure test chamber;
[0012] The maximum horizontal locking / opening stroke of the mechanical auxiliary switch compartment device is 100mm; the mechanical auxiliary switch compartment device includes an auxiliary switch compartment annular connector, an outer opening compartment positioning fixture, an inner opening compartment positioning fixture, a locking / opening conversion member and a torque measuring member, and the auxiliary switch compartment annular connector is fixedly secured to the outer side near the top of the water pressure test chamber; the outer opening compartment positioning fixture and the inner opening compartment positioning fixture are used to withstand the torque of the locking / opening conversion member, and when working, the outer opening compartment positioning fixture is placed in the fixing hole of the auxiliary switch compartment annular connector, and the inner opening compartment positioning fixture is placed on the groove of the spiral seal ring;
[0013] The locking / opening conversion member is composed of two threaded rods, two circular rings and a hollow tubular connector with built-in positive and negative threads at both ends. The two threaded rods are located in the connector and are respectively threadedly connected to the two ends of the connector. The two threaded rods are movably connected to the two circular rings. When the two threaded rods rotate, the connector and the two circular rings do not rotate, and when the two threaded rods rotate to move toward or away from each other, they respectively drive the two circular rings to move together. Vertical through holes are respectively provided on the two circular rings. When working, the two circular rings of the locking / opening conversion member are respectively sleeved on the outer opening cabin positioning fixing member and the inner opening cabin positioning fixing member; the torque measuring member is connected to the locking / opening conversion member, and the rotating torque measuring member drives the locking / opening conversion member to provide extrusion and tension forces in positive and negative directions.
[0014] Furthermore, the maximum bearing pressure of the main chamber of the water pressure test is 100MPa, and the part of the water pressure test chamber near its top is a sealing section. The sealing section does not withstand the outward expanding water pressure during the water pressure test. The sealing section is divided into a spiral sealing section located at the upper part and a smooth sealing section located at the lower part. The spiral sealing section is threadedly connected to the spiral sealing ring for sealing, and the smooth sealing section corresponds to the sealing end cover; the part of the water pressure test chamber near its middle and bottom ends is a pressure-bearing section, and the inside of the pressure-bearing section is a smooth pressure-bearing section, which withstands the outward expanding water pressure during the water pressure test.
[0015] Furthermore, a circle of raised platforms is provided in the water pressure test chamber, a circle of annular grooves is provided on the upper surface of the platform, an O-type rubber sealing ring is placed in the annular groove, and when the sealing end cover is placed in the water pressure test chamber and the spiral sealing ring is tightened, the bottom plane of the sealing end cover evenly squeezes the O-type rubber sealing ring downward to fill the annular groove to achieve sealing.
[0016] Furthermore, each of the threaded rods is a stepped structural rod, the large diameter end rod is a cylindrical structure with threads on the outer surface, the small diameter end rod is a structure with a square cross-section, and the end of the large diameter end rod is provided with a countersunk hole with an internal thread; a horizontal through hole is opened on each of the circular rings, and an internal bolt is placed in the horizontal through hole, so that the threaded rod is movably connected to the circular ring through the internal bolt; there is no internal thread in the middle of the interior of the connector, and the inner diameter of the place with internal threads is smaller than the inner diameter of the place without internal threads.
[0017] Furthermore, the torque measuring part is composed of a torque measuring wrench, a vertical bevel gear and two horizontal bevel gears. The torque measuring wrench is vertically fixedly connected to the axis of the vertical bevel gear. The two horizontal bevel gears are respectively sleeved on the small diameter end rods of the corresponding threaded rods, and the two horizontal bevel gears are respectively restricted to rotational movement in the connector by steps formed at the connections with different inner diameters in the connector. An opening is also provided at the upper middle end of the connector. The opening is used to place the vertical bevel gear so that the vertical bevel gear is always engaged with the two horizontal bevel gears at the same time.
[0018] Furthermore, the annular connector of the auxiliary switch compartment is connected to the water pressure test compartment by a mechanical clamp structure to achieve locking and fixing.
[0019] Furthermore, the auxiliary switch compartment annular connector is divided into three sections, and four fixing holes are evenly distributed on each section;
[0020] Furthermore, the spiral sealing ring has a groove distributed every 90°.
[0021] The present invention also provides a method for mechanically assisting the opening and closing of a hydraulic test chamber using the mechanically assisting opening and closing chamber device to perform spiral-corrugated sealing. The specific process is as follows:
[0022] 1) According to the dimensions and stress of the hydraulic test chamber, place the sealing end cover on the raised platform in the hydraulic test chamber, then tighten the spiral sealing ring on the hydraulic test chamber, and determine the installation position of the annular connector of the auxiliary switch chamber. During installation, avoid stress on the pressure section of the hydraulic test chamber, and take into account the height of the daily operation of the test personnel;
[0023] 2) According to the position of the fixing hole of the annular connector of the auxiliary switch compartment and the position of the groove of the spiral sealing ring, the annular connector of the auxiliary switch compartment and the water pressure test compartment are fastened together and there is no relative displacement between the two;
[0024] 3) According to the position of the fixing hole of the annular connector of the auxiliary switch compartment, the position of the groove of the spiral sealing ring, and the test locking / opening torque, select the locking / opening conversion piece of corresponding length and diameter, so that the threaded rod, the ring, and the connector with built-in positive and negative threads are at an appropriate working length and meet the test operation requirements;
[0025] 4) Take the auxiliary switch compartment annular connector and the spiral sealing ring as the fixed installation base, select a groove as a fixed point, connect the inner opening compartment positioning fixture and the spiral sealing ring, and then select the position where the outer opening compartment positioning fixture and the auxiliary switch compartment annular connector are connected and fixed as another fixed point, and connect the outer opening compartment positioning fixture and the auxiliary switch compartment annular connector; then, respectively sleeve the circular rings at both ends of the locking / opening conversion member on the inner opening compartment positioning fixture and the outer opening compartment positioning fixture, so that the locking / opening conversion member provides the maximum tensile force or compression force, and complete the final connection of the mechanical auxiliary switch compartment device.
[0026] Furthermore, when the mechanical auxiliary switch compartment device is used for the first time, the torque measuring device is first used to implement the locking and sealing of the water pressure test compartment; a pressure test is performed, the water pressure test compartment is pressurized in an unloaded state, and the torque measuring device is used to complete the sealing of different pressure levels according to different pressures, and different locking torques are measured;
[0027] After completing the locking torque test, perform the opening torque test in reverse operation to measure different opening torques;
[0028] Record all locking / opening data and form a data comparison table so that the closest corresponding torque value can be selected according to the test pressure value when conducting water pressure tests in the future.
[0029] The advantages and positive effects of the present invention are:
[0030] 1. Mechanical design structure. The present invention is mainly composed of an auxiliary switch compartment annular connector, an outer opening compartment positioning fixture, an inner opening compartment positioning fixture, a locking / opening conversion component and a torque measuring component. All components are standardized parts, which solves the problems of time-consuming manpower costs for locking / opening the hatch cover, the problem that the operating torque cannot be quantified and controlled, the problem that the opening device is easy to get stuck, and the problem that the old water pressure test chamber cannot use the mechanical auxiliary switch compartment device.
[0031] 2. Simple structure and easy to manufacture. All parts of the present invention are industrial-grade metal parts, which are quick and convenient to assemble during use, so that the mechanical auxiliary switch compartment device of the water pressure test chamber can be quickly put into use, and a standardized operation process can be formed, which is convenient for rapid promotion and application.
[0032] 3. High reliability of the device. All components of the present invention are made of high-strength stainless steel, and the components are connected by screws and gears, which are less affected by external interference, have a low failure rate, and are not affected by various energy supplies.
[0033] 4. Strong compatibility in applicable fields. The annular connector of the auxiliary switch cabin included in the present invention can be applied to different sizes of water pressure test cabins. During installation, the clamping and positioning function on different water pressure test cabins can be achieved by adjusting the locking distance between the three sections of the annular connector of the auxiliary switch cabin and the height position on the sealing section of the water pressure test cabin. At the same time, according to the different locking / opening torques, the locking / opening conversion parts and torque measuring parts can select devices of different specifications and ranges, so that the mechanical auxiliary switch cabin device of the water pressure test cabin designed by the present invention can meet the needs of various domestic institutions (laboratories) for spiral-pattern sealed water pressure test cabins of different pressure levels with an outer diameter of less than 800mm.
[0034] 5. Save manpower and time costs. The present invention can provide large torque thrust / pull force, and can be operated by one person throughout the entire process in actual work, greatly reducing manpower costs. Since each component can form a standardized operation process, the one-time locking / opening success rate of the spiral seal ring and the water pressure test chamber is high, and the test time cost can be significantly reduced.
[0035] 6. The operating torque is quantifiable and controllable. The present invention introduces a measuring component in the torque output process, which can grasp the real-time output torque; at the same time, a background reference data comparison table is established for the different test pressures of the water pressure test chamber and the corresponding locking / opening torque, which is convenient for the locking / opening operation of each test, avoiding the occurrence of torque interference or deficiency, and transforming the operation process from sensory experience to precise control. In addition, after a long period of high-pressure testing, the relative torque between the spiral sealing ring and the water pressure test chamber is large, and it is easy to get stuck. The locking / opening conversion part introduced in the present invention can provide a torque that is much larger than the manual horizontal lateral push, and can easily open the stuck spiral sealing ring.
[0036] 7. It can also meet the needs of old water pressure test chambers. Many old water pressure test chambers in service did not reserve fixing holes for the outer opening positioning fixtures during design and manufacturing, and due to the long construction time, it is impossible to directly modify and add fixing holes on their end faces. The present invention solves this problem by adding auxiliary switch chamber annular connectors to the unstressed parts of the water pressure test chamber so that it has fixing holes. The mechanical auxiliary switch chamber device proposed in the present invention can then be used to change the original operation mode, save manpower and time costs, and improve control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] In order to more clearly illustrate the technical solutions of the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the specific embodiments. Obviously, the drawings described below are some specific embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0038] Figure 1 A schematic diagram of the main cabin structure of a water pressure test without a mechanical auxiliary switch cabin device provided in an embodiment of the present invention;
[0039] Figure 2 A schematic structural diagram of the top surface of the main cabin body for a water pressure test without installing a mechanical auxiliary switch cabin device provided by an embodiment of the present invention;
[0040] Figure 3 A schematic diagram of the structure of a mechanical auxiliary switch compartment device provided in an embodiment of the present invention installed on a main compartment of a water pressure test;
[0041] Figure 4 A schematic diagram of the structure of the annular connector of the auxiliary switch compartment provided in an embodiment of the present invention;
[0042] Figure 5 A schematic diagram of the structure of an outer opening positioning fixture provided in an embodiment of the present invention;
[0043] Figure 6 A schematic structural diagram of an inner opening positioning fixture provided by an embodiment of the present invention;
[0044] Figure 7 A schematic diagram of the structure of a locking / unlocking conversion member provided in an embodiment of the present invention; (with two horizontal bevel gears)
[0045] Figure 8 A schematic diagram of the structure of a connector provided by an embodiment of the present invention;
[0046] Fig. 9 A schematic diagram of the structure after the threaded rod and the ring are connected according to an embodiment of the present invention;
[0047] Fig.10 A schematic diagram of a structure in which a threaded rod and a circular ring are not connected according to an embodiment of the present invention;
[0048] Fig.11 A schematic diagram of the structure of a torque measuring member provided in an embodiment of the present invention (two horizontal bevel gears are not shown);
[0049] Fig.12 A schematic diagram of the structure of a horizontal bevel gear provided in an embodiment of the present invention.
[0050] Description of reference numerals:
[0051] 1. Water pressure test chamber; 1-1. Platform; 1-2. Annular groove; 1-3. Sealing section; 1-4. Pressure section; 2. Sealing end cover; 3. Spiral sealing ring; 3-1. Groove; 4. Annular connector for auxiliary switch compartment; 4-1. Fixing hole; 5. Positioning fixture for outer opening compartment; 6. Positioning fixture for inner opening compartment; 7. Locking / opening conversion piece; 7-1. Threaded rod; 7-1-1. Large diameter end rod; 7-1-2. Small diameter end rod; 7-1-3. Countersunk hole; 7-2. Ring; 7-2-1. Vertical through hole; 7-2-2. Horizontal through hole; 7-3. Connector; 7-3-1. Opening hole; 7-3-2. Step; 7-4. Built-in bolt; 8. Torque measuring piece; 8-1. Torque measuring wrench; 8-2. Vertical bevel gear; 8-3. Horizontal bevel gear; 9. O-type rubber sealing ring. DETAILED DESCRIPTION
[0052] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0053] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to 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 "one", "two", and "three" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0054] In the description of the present invention, it should be noted that, 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0055] See also Figures 1 to 12, This embodiment provides a mechanical auxiliary switch compartment device for a hydraulic test chamber with a spiral seal, wherein the main chamber of the hydraulic test chamber is a basic hydraulic test equipment that needs to be locked / opened, and comprises a hydraulic test chamber 1, a sealing end cover 2 and a spiral seal ring 3, wherein the sealing end cover 2 is located in the hydraulic test chamber 1, and the spiral seal ring 3 is threadedly installed on the hydraulic test chamber 1, and the spiral seal ring 3 is tightened to seal the spiral seal ring 3 and the hydraulic test chamber 1, and the sealing end cover 2 is pressed down to seal the bottom of the spiral seal ring 3 and the sealing end cover 2, and the bottom plane of the sealing end cover 2 and the hydraulic test chamber 1;
[0056] The mechanical auxiliary switch compartment device includes an auxiliary switch compartment annular connector 4, an outer compartment opening positioning fixture 5, an inner compartment opening positioning fixture 6, a locking / opening conversion component 7 and a torque measuring component 8. The auxiliary switch compartment annular connector 4 is fixedly secured to the outer side near the top of the water pressure test compartment 1; the outer compartment opening positioning fixture 5 and the inner compartment opening positioning fixture 6 are used to withstand the torque of the locking / opening conversion component 7. When working, the outer compartment opening positioning fixture 5 is placed in the fixing hole 4-1 of the auxiliary switch compartment annular connector 4, and the inner compartment opening positioning fixture 6 is placed on the groove 3-1 of the spiral sealing ring 3; the outer compartment opening positioning fixture 5 and the inner compartment opening positioning fixture 6 can be directly placed through their own structures, and the main function of the two is to provide fixing or supporting points at both ends for the subsequent locking / opening conversion components.
[0057] The locking / unlocking conversion member 7 is composed of two threaded rods 7-1, two rings 7-2 and a hollow tubular connector 7-3 with built-in positive and negative threads at both ends. The two threaded rods 7-1 are located in the connector 7-3 and are respectively threadedly connected to the two ends of the connector 7-3. The two threaded rods 7-1 are movably connected to the two rings 7-2. When the two threaded rods 7-1 rotate, the connector 7-3 and the two rings 7-2 do not rotate. When the two threaded rods 7-1 rotate to move toward or away from each other, they respectively drive the two rings 7-2 to move together. The two rings 7-2 are respectively provided with vertical through holes 7-2-1. When working, the two rings 7-2 of the locking / unlocking conversion member 7 are respectively It is mounted on the outer opening positioning fixture 5 and the inner opening positioning fixture 6 to play a fixing role; the torque measuring part 8 is connected to the locking / opening conversion part 7, and the rotating torque measuring part 8 drives the locking / opening conversion part 7 to provide extrusion and stretching forces in the positive and negative directions, that is, the threaded stroke is used to achieve the action of inward stretching and outward extrusion, and the torque measurement is realized at the same time; in order to meet the needs of different torques and horizontal strokes, when used in conjunction, it is only necessary to set the length, diameter of the threaded rod 7-1 and the length of the connector 7-3 to different specifications, so as to achieve the purpose of flexibly adapting to different locking / opening strokes and maximum test pressures of the water pressure test chamber 1, without changing the structural form of the whole device. The torque measuring part 8 is a horizontal force measuring component connected to the locking / opening conversion part 7. The locking / opening torque can be measured in real time through the torque measuring part 8, and the strength of each operation can be quantitatively reflected to avoid over-tightening and damage to the spiral sealing ring 3.
[0058] As a preferred embodiment, the maximum bearing pressure of the main water pressure test chamber body of the present invention is 100MPa, and the outer dimensions are Φ0.8m×h2.4m; the water pressure test chamber 1 is divided into sealing sections 1-3 (non-pressure bearing) at 0.8m near its top, and the sealing sections 1-3 do not bear the water pressure expanding outward during the water pressure test. The sealing sections 1-3 are divided into a spiral seal section located at the upper part and a smooth seal section located at the lower part. The spiral seal section is threadedly connected with the spiral seal ring 3 for sealing, and the smooth seal section corresponds to the sealing end cover 2; the water pressure test chamber 1 is divided into pressure sections 1-4 at 1.6m near its middle and bottom ends, and the pressure sections 1-4 are smooth pressure sections, which bear the water pressure expanding outward during the water pressure test, and no other force-bearing components can be installed on the outside. Other domestic spiral seal water pressure test chambers 1 have different maximum bearing pressures and test chamber outer dimensions, but they do not affect the use of the mechanical auxiliary switch chamber device.
[0059] As a preferred embodiment, the water pressure test chamber 1 is provided with a circle of raised platforms 1-1, the upper surface of the platform 1-1 is provided with a circle of annular grooves 1-2, an O-type rubber sealing ring 9 is placed in the annular groove 1-2, and when the sealing end cover 2 is placed in the water pressure test chamber 1 and the spiral sealing ring 3 is tightened, the bottom plane of the sealing end cover 2 evenly squeezes the O-type rubber sealing ring 9 downward to fill the annular groove 1-2 to achieve a sealing effect.
[0060] As a preferred embodiment, each of the threaded rods 7-1 is a stepped structural rod, the large diameter end rod 7-1-1 is a cylindrical structure with threads on the outer surface, the small diameter end rod 7-1-2 is a structure with a square cross-section, and a countersunk hole 7-1-3 with an internal thread is provided at the end of the large diameter end rod 7-1-1; a horizontal through hole 7-2-2 is opened on each of the circular rings 7-2, and an internal bolt 7-4 is placed in the horizontal through hole 7-2-2, so that the threaded rod 7-1 is movably connected to the circular ring 7-2 through the internal bolt 7-4; there is no internal thread in the middle of the interior of the connector 7-3, and the inner diameter of the place with internal threads is smaller than the inner diameter of the place without internal threads.
[0061] Specifically, Figure 7 to Figure 10 As shown, the small diameter end rod 7-1-2 is a structure with a square cross section. When this structure is working, the horizontal bevel gear is sleeved on the outside, and there is some gap between the two. The large diameter end rod 7-1-1 is a cylindrical structure with threads. There is a countersunk hole 7-1-3 with internal threads at the tail end of the large diameter end rod 7-1-1, which is used to install the built-in bolt 7-4 between the threaded rod 7-1 and the ring 7-2. When working, the large diameter end rod 7-1-1 is driven by the small diameter end rod 7-1-2 to move inward or outward along the internal threads of the connector 7-3, and also plays a certain role in fixing the horizontal trajectory to prevent it from deviating.
[0062] A horizontal through hole 7-2-2 is drilled inside the vertical through hole 7-2-1 of the circular ring 7-2, and the circular ring 7-2 and the threaded rod 7-1 are connected together by a built-in bolt 7-4 to achieve horizontal movement together.
[0063] Connector 7-3 is a hollow structure, a tubular component with internal threads. There are internal threads near both ends of connector 7-3, but no internal threads near the center opening. The inner diameter of the part without internal threads is slightly larger to ensure that the internal horizontal bevel gear has rotation space. There is an opening 7-3-1 in the middle of connector 7-3 to place the vertical bevel gear 8-2.
[0064] As a preferred embodiment, the torque measuring member 8 is composed of a torque measuring wrench 8-1, a vertical bevel gear 8-2 and two horizontal bevel gears 8-3. The torque measuring wrench 8-1 is vertically fixedly connected to the axis of the vertical bevel gear 8-2. The two horizontal bevel gears 8-3 are respectively sleeved on the small diameter end rod 7-1-2 of the corresponding threaded rod 7-1, and the two horizontal bevel gears 8-3 are respectively restricted to only rotational movement in the connector 7-3 by steps 7-3-2 formed at the connection points of different inner diameters in the connector 7-3. An opening 7-3-1 is also provided at the middle upper end of the connector 7-3. The opening 7-3-1 is used to place the vertical bevel gear 8-2, so that the vertical bevel gear 8-2 is always engaged with the two horizontal bevel gears 8-3 at the same time. During operation, the vertical bevel gear 8-2 is placed on the connector 7-3 of the locking / opening conversion member 7, and the torque measuring wrench 8-1 of the torque measuring member 8 is rotated forward and reversely to realize the conversion of vertical movement into horizontal movement, thereby realizing the extension and retraction of the circular ring 7-2 components at both ends of the locking / opening conversion member 7.
[0065] like Fig.12 As shown, the central part of the horizontal bevel gear 8-3 is a square structure, which rotates horizontally under the drive of the meshing vertical bevel gear 8-2. When working, the horizontal bevel gear 8-3 is sleeved on the outside of the small diameter end rod 7-1-2 of the threaded rod 7-1 with some clearance; when rotating, it guides the large diameter end rod 7-1-1 to rotate along the internal thread inside the connector 7-3 without horizontal deviation.
[0066] When working, the horizontal bevel gear 8-3 rotates, driving the threaded rod 7-1 to rotate. At this time, the threaded rod 7-1 moves horizontally along the internal threads inside the connector 7-3 (the internal threads of the connector 7-3 also play a role in horizontal positioning, so that the horizontal movement does not deviate). In addition, the threaded rod 7-1 and the ring 7-2 are not tightly fitted, but there is a gap. The purpose of reserving the gap is that when the threaded rod 7-1 rotates, the ring 7-2 will not be driven to rotate, so that the ring 7-2 can always maintain one direction.
[0067] When the two threaded rods 7-1 rotate and move toward the center of the connector 7-3, the built-in bolts 7-4 in the ring 7-2 can move the ring 7-2 toward the center of the connector 7-3, thereby stretching the ring inward. When the two threaded rods 7-1 rotate and move toward the two ends of the connector 7-3, they can move outward by holding the ring 7-2, thereby pushing the ring outward.
[0068] As a preferred embodiment, the auxiliary switch cabin annular connector 4 is connected to the water pressure test cabin 1 through a mechanical clamp structure to achieve locking and fixing. During the cabin opening and closing process, the auxiliary switch cabin annular connector 4 acts as a force-bearing base on the outer side of the water pressure test cabin 1 and maintains no relative displacement or sliding with the water pressure test cabin 1.
[0069] As a preferred embodiment, the auxiliary switch compartment annular connector 4 is divided into 3 sections, and 4 fixing holes 4-1 are evenly distributed on each section; the auxiliary switch compartment annular connector 4 can be flexibly disassembled and assembled, and the installation position can be freely selected according to the outer diameter and use height of the water pressure test chamber 1. It is particularly suitable for the working mode in which the water pressure test chamber 1 in service does not have an outer opening fixing hole 4-1 reserved and external auxiliary components need to be installed. The angle difference between each fixing hole 4-1 of the auxiliary switch compartment annular connector 4 is evenly divided into 30°, and the locking / opening angle formed by it, the outer opening positioning fixture 5, the inner opening positioning fixture 6 and the spiral seal ring 3 can flexibly meet the operating actions of the spiral seal ring 3 in various directions during use.
[0070] As a preferred embodiment, the spiral seal ring 3 has a groove 3-1 distributed every 90°; the auxiliary switch compartment annular connector 4 and the spiral seal ring 3 can provide multiple angles of maximum tangent torque direction for the outer opening compartment positioning fixture 5 and the inner opening compartment positioning fixture 6 through the combination of fixed positions at different positions. When the inner side of the locking / opening conversion member 7 is sleeved on the inner opening compartment positioning fixture 6, it can be rotated with the inner opening compartment positioning fixture 6 as the center of the circle to find the appropriate fixing position of the outer side of the locking / opening conversion member 7 and the outer opening compartment positioning fixture 5 (generally a fixing hole 4-1 on the auxiliary switch compartment annular connector 4 that is closest to it). Due to the different angles, this outer fixing position should enable the locking / opening conversion member 7 to provide the maximum locking or opening torque in the telescopic direction, so as to more easily complete the locking or loosening of the spiral seal ring 3.
[0071] The maximum horizontal locking / opening stroke of the mechanical auxiliary switch compartment device is 100mm, and the maximum locking force meets the test pressure requirement of 100MPa. The auxiliary switch compartment annular connector 4 can cover the installation requirements of the water pressure test chamber 1 within the outer diameter of 0.8m. The mechanical auxiliary switch compartment operation can be performed on the water pressure test chamber 1 with a maximum pressure of 100MPa and an outer diameter of 0.8m in various domestic water pressure test institutions (laboratories). Before / after the test, the appropriate locking torque and opening torque need to be given according to the maximum pressure value of the water pressure test chamber 1 in this test to facilitate the test operation.
[0072] The present invention also provides a method for mechanically assisting the opening and closing of a hydraulic test chamber 1 by using the mechanically assisting opening and closing chamber device to perform spiral-corrugated sealing. The specific process is as follows:
[0073] 1) According to the dimensions and stress conditions of the hydraulic test chamber 1, place the sealing end cover 2 on the raised platform 1-1 in the hydraulic test chamber 1, and then tighten the spiral sealing ring 3 on the hydraulic test chamber 1, and determine the installation position of the auxiliary switch chamber annular connector 4. During installation, it is necessary to avoid stress on the pressure section of the hydraulic test chamber 1, while taking into account the high and low positions of the daily operations of the test personnel; generally, before installation, the spiral sealing ring 3 can be manually tightened on the hydraulic test chamber 1 to achieve a nearly sealed state, and then its four grooves 3-1 are marked, and then the locking / opening conversion piece 7 is used to try to find a few points on the outside of the hydraulic test chamber 1 that are easy to tighten / loosen, so that the position of the fixing hole 4-1 on the auxiliary switch chamber annular connector 4 roughly coincides with the area of these points, which is convenient for tightening / loosening the locking / opening conversion piece 7 later.
[0074] 2) According to the position of the fixing hole 4-1 of the auxiliary switch compartment annular connector 4 and the position of the groove 3-1 of the spiral sealing ring 3, the auxiliary switch compartment annular connector 4 and the water pressure test chamber 1 are fastened together, and the two are kept without relative displacement. No position adjustment is required after the first installation.
[0075] 3) According to the position of the fixing hole 4-1 of the annular connector 4 of the auxiliary switch compartment, the position of the groove 3-1 of the spiral sealing ring 3, and the test locking / opening torque, select the locking / opening conversion piece 7 of corresponding length and diameter, so that the threaded rod 7-1, the ring 7-2 and the connector 7-3 with built-in positive and negative threads are at an appropriate working length and meet the test operation requirements.
[0076] 4) Taking the auxiliary switch compartment annular connector 4 and the spiral seal ring 3 as the fixed installation base, select a groove 3-1 as a fixed point, connect the inner opening compartment positioning fixture 6 and the spiral seal ring 3, and then select the position where the outer opening compartment positioning fixture 5 and the auxiliary switch compartment annular connector 4 are connected and fixed as another fixed point, and connect the outer opening compartment positioning fixture 5 and the auxiliary switch compartment annular connector 4; then the circular rings 7-2 at both ends of the locking / opening conversion member 7 are respectively sleeved on the inner opening compartment positioning fixture 6 and the outer opening compartment positioning fixture 5, so that the locking / opening conversion member 7 provides the maximum tensile force or compression force, that is, according to the principle of "torque = force × action distance", the action distance is made as large as possible, that is, the position where the auxiliary switch compartment annular connector 4 and the outer opening compartment positioning fixture 5 are fixed is a position point farthest from the fixed position of the spiral seal ring 3 and the inner opening compartment positioning fixture 6 and the force is the smallest, and the locking / opening conversion member 7 is used to complete the final connection of the mechanical auxiliary switch compartment device.
[0077] When the mechanical auxiliary switch compartment device is used for the first time, the torque measuring piece 8 is used to implement the locking and sealing of the water pressure test compartment 1; a pressure test is performed to increase the pressure of the water pressure test compartment 1 in an unloaded state, and the torque measuring piece 8 is used to complete the sealing of different pressure levels according to different pressures, and different locking torques are measured. It is recommended to test the locking torque once every 10MPa, and complete the data test of the locking torque from 10MPa to 100MPa, so as to grasp the optimal locking torque range and avoid excessive locking to damage the spiral seal ring 3;
[0078] After completing the locking torque test, reverse the operation to perform the opening torque test and measure different opening torques. It is recommended to test the opening torque every 10MPa and complete the data test of the opening torque from 100MPa to 10MPa to grasp the optimal opening torque range, so as to quickly open the spiral seal ring 3 after the test and complete the disassembly and assembly work;
[0079] All locking / opening data are recorded and a data comparison table is formed so that the closest corresponding torque value can be selected according to the test pressure value when conducting water pressure test in the future, so as to complete the sealing and disassembly work of the water pressure test chamber 1 quickly and safely.
[0080] After the first installation, the present invention can be subjected to a pressure test, and different locking / opening torques can be measured according to different pressures, and then a torque recommendation table is formed for later reference.
[0081] The present invention adopts a mechanical design structure, has a simple structure, is easy to manufacture, has high device reliability, has strong compatibility in applicable fields, saves manpower and time costs, helps to improve test efficiency, has quantitative and controllable operating torque, and can meet the use requirements of old water pressure test chambers 1. The present invention fundamentally solves the problems of manpower and time costs in locking / opening the hatch cover of the spiral-pattern-sealed water pressure test chamber 1 in the field of marine water pressure detection tests, the problem that the operating torque cannot be quantitatively controlled, the problem that the opening device is easy to get stuck, and the problem that the old water pressure test chamber 1 cannot use a mechanical auxiliary switch chamber device, improves the existing locking / opening method of the spiral-pattern-sealed water pressure test chamber 1, and provides a new locking / opening device and use method for the spiral-pattern test chamber.
[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A mechanical auxiliary switch compartment device for a hydraulic test chamber with a spiral seal, wherein the main chamber of the hydraulic test chamber comprises a hydraulic test chamber, a sealing end cover and a spiral seal ring, wherein the sealing end cover is located in the hydraulic test chamber, and the spiral seal ring is threadedly connected and installed on the hydraulic test chamber, and the spiral seal ring is tightened to seal between the spiral seal ring and the hydraulic test chamber, and the seal end cover is pressed down to seal between the bottom of the spiral seal ring and the sealing end cover, and between the bottom plane of the sealing end cover and the hydraulic test chamber; the characteristics are: The maximum horizontal locking / opening stroke of the mechanical auxiliary switch compartment device is 100mm; the mechanical auxiliary switch compartment device includes an auxiliary switch compartment annular connector, an outer opening compartment positioning fixture, an inner opening compartment positioning fixture, a locking / opening conversion member and a torque measuring member, and the auxiliary switch compartment annular connector is fixedly secured to the outer side near the top of the water pressure test chamber; the outer opening compartment positioning fixture and the inner opening compartment positioning fixture are used to withstand the torque of the locking / opening conversion member, and when working, the outer opening compartment positioning fixture is placed in the fixing hole of the auxiliary switch compartment annular connector, and the inner opening compartment positioning fixture is placed on the groove of the spiral seal ring; The locking / opening conversion member is composed of two threaded rods, two circular rings and a hollow tubular connector with built-in positive and negative threads at both ends. The two threaded rods are located in the connector and are respectively threadedly connected to the two ends of the connector. The two threaded rods are movably connected to the two circular rings. When the two threaded rods rotate, the connector and the two circular rings do not rotate, and when the two threaded rods rotate to move toward or away from each other, they respectively drive the two circular rings to move together. Vertical through holes are respectively provided on the two circular rings. When working, the two circular rings of the locking / opening conversion member are respectively sleeved on the outer opening cabin positioning fixing member and the inner opening cabin positioning fixing member; the torque measuring member is connected to the locking / opening conversion member, and the rotating torque measuring member drives the locking / opening conversion member to provide extrusion and tension forces in positive and negative directions.
2. The mechanical auxiliary switch compartment device of the spiral-seal water pressure test chamber according to claim 1 is characterized in that: The maximum bearing pressure of the main water pressure test chamber is 100MPa. The part of the water pressure test chamber near its top is a sealing section. The sealing section does not withstand the outward expanding water pressure during the water pressure test. The sealing section is divided into a spiral sealing section located at the upper part and a smooth sealing section located at the lower part. The spiral sealing section is threadedly connected with the spiral sealing ring for sealing, and the smooth sealing section corresponds to the sealing end cover; the part of the water pressure test chamber near its middle and bottom ends is a pressure-bearing section. The inside of the pressure-bearing section is a smooth pressure-bearing section, which withstands the outward expanding water pressure during the water pressure test.
3. The mechanical auxiliary switch compartment device of the spiral-seal water pressure test chamber according to claim 1 is characterized in that: A circle of raised platforms is provided in the water pressure test chamber, and a circle of annular grooves is provided on the upper surface of the platform. An O-type rubber sealing ring is placed in the annular groove. When the sealing end cover is placed in the water pressure test chamber and the spiral sealing ring is tightened, the bottom plane of the sealing end cover evenly squeezes the O-type rubber sealing ring downward to fill the annular groove to achieve sealing.
4. The mechanical auxiliary switch compartment device of the spiral-seal water pressure test chamber according to claim 1 is characterized in that: Each of the threaded rods is a stepped structural rod, the large diameter end rod is a cylindrical structure with threads on the outer surface, the small diameter end rod is a structure with a square cross-section, and the end of the large diameter end rod is provided with a countersunk hole with an internal thread; a horizontal through hole is opened on each of the circular rings, and an internal bolt is placed in the horizontal through hole, so that the threaded rod is movably connected to the circular ring through the internal bolt; there is no internal thread in the middle of the interior of the connector, and the inner diameter of the place with internal threads is smaller than the inner diameter of the place without internal threads.
5. The mechanical auxiliary switch compartment device of the spiral-seal water pressure test chamber according to claim 4 is characterized in that: The torque measuring part is composed of a torque measuring wrench, a vertical bevel gear and two horizontal bevel gears. The torque measuring wrench is vertically fixedly connected to the shaft of the vertical bevel gear. The two horizontal bevel gears are respectively sleeved on the small diameter end rods of the corresponding threaded rods, and the two horizontal bevel gears are respectively restricted to only rotational movement in the connector through steps formed at the connection points of different inner diameters in the connector. An opening is also provided at the upper middle end of the connector. The opening is used to place the vertical bevel gear so that the vertical bevel gear is always engaged with the two horizontal bevel gears at the same time.
6. The mechanical auxiliary switch compartment device for the water pressure test chamber with spiral seal according to claim 1 is characterized in that: The auxiliary switch compartment annular connector is connected to the water pressure test compartment through a mechanical clamp structure to achieve locking and fixing.
7. The mechanical auxiliary switch compartment device of the spiral-seal water pressure test chamber according to claim 1 is characterized in that: The auxiliary switch compartment annular connector is divided into three sections, and four fixing holes are evenly distributed on each section.
8. The mechanical auxiliary switch compartment device for the water pressure test chamber with spiral seal according to claim 1 is characterized in that: The spiral seal ring has a groove distributed every 90 degrees.
9. A method for mechanically assisting the opening and closing of a hydraulic test chamber using the mechanically assisting opening and closing chamber device according to any one of claims 1 to 8, characterized in that: The specific process is: 1) According to the dimensions and stress of the hydraulic test chamber, place the sealing end cover on the raised platform in the hydraulic test chamber, then tighten the spiral sealing ring on the hydraulic test chamber, and determine the installation position of the annular connector of the auxiliary switch chamber. During installation, avoid stress on the pressure section of the hydraulic test chamber, and take into account the height of the daily operation of the test personnel; 2) According to the position of the fixing hole of the annular connector of the auxiliary switch compartment and the position of the groove of the spiral sealing ring, the annular connector of the auxiliary switch compartment and the water pressure test compartment are fastened together and there is no relative displacement between the two; 3) According to the position of the fixing hole of the annular connector of the auxiliary switch compartment, the position of the groove of the spiral sealing ring, and the test locking / opening torque, select the locking / opening conversion piece of corresponding length and diameter, so that the threaded rod, the ring, and the connector with built-in positive and negative threads are at an appropriate working length and meet the test operation requirements; 4) Take the auxiliary switch compartment annular connector and the spiral sealing ring as the fixed installation base, select a groove as a fixed point, connect the inner opening compartment positioning fixture and the spiral sealing ring, and then select the position where the outer opening compartment positioning fixture and the auxiliary switch compartment annular connector are connected and fixed as another fixed point, and connect the outer opening compartment positioning fixture and the auxiliary switch compartment annular connector; then, respectively sleeve the circular rings at both ends of the locking / opening conversion member on the inner opening compartment positioning fixture and the outer opening compartment positioning fixture, so that the locking / opening conversion member provides the maximum tensile force or compression force, and complete the final connection of the mechanical auxiliary switch compartment device.
10. The mechanical auxiliary opening and closing method of a hydraulic test chamber with spiral seal according to claim 9 is characterized in that: When the mechanical auxiliary switch compartment device is used for the first time, the torque measuring device is used to implement the locking and sealing of the water pressure test compartment; the pressure test is carried out, the water pressure test compartment is pressurized in an unloaded state, and the torque measuring device is used to complete the sealing of different pressure levels according to different pressures, and different locking torques are measured; After completing the locking torque test, perform the opening torque test in reverse operation to measure different opening torques; Record all locking / opening data and form a data comparison table so that the closest corresponding torque value can be selected according to the test pressure value when conducting water pressure tests in the future.