Device for simulating normal loading

Abstract

According to the load device for simulating normal loading, through mutual nesting of the structures, the device is more stable when bearing internal and external pressure. Particularly, a plurality of supporting sleeves and connecting pieces are arranged, so that the stress of each part is uniformly dispersed. The inner supporting sleeve, the outer supporting sleeve, the inner clamping sleeve and the outer clamping sleeve base provide rigid support for the whole device, so that the device cannot deform or shift when subjected to external force or pressure fluctuation. Due to the design of the connecting rod and the pressing cap, the overall structural stability is enhanced, and it is ensured that the integrity of the device can be maintained when the device is subjected to high pressure or impact. And in addition, due to the combination of multi-stage sealing, corrugated pipe transmission and multi-layer supporting, the device is endowed with extremely high safety. When the sealing device works in a high-pressure environment, even if part of the sealing layers go wrong, other sealing layers can still provide effective protection. The device is designed to have enough redundancy, so that the gas is difficult to leak completely even under extreme conditions.

Description

Technical Field

[0001] The invention relates to the technical field of micro-motion wear experimental devices, and in particular to a load device for simulating normal loading. Background Art

[0002] As a safe, clean and efficient low-carbon energy, nuclear energy has become an important choice for achieving sustainable development of energy and electricity. However, during the operation of a pressurized water reactor, the fretting wear of the Zr-4 alloy cladding caused by flow-induced vibration will damage the contact surface, thereby causing damage and failure of the nuclear fuel assembly, and even causing leakage of nuclear fission products. According to statistics, fretting wear is the main cause of fuel assembly failure in nuclear reactors.

[0003] In order to study the micro-motion wear characteristics of alloy cladding in the high temperature and high pressure environment of nuclear reactors, it is necessary to simulate the high temperature and high pressure environment, which puts higher requirements on the sealing of the loading unit and the experimental unit. At present, most of the research on micro-motion wear is carried out at room temperature, so the designed normal loading load device does not have good airtightness and safety. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a load device for simulating normal loading to solve the technical problem that most of the research on micro-wear in the prior art is carried out under normal temperature environment, so the designed normal loading load device does not have good air tightness and safety.

[0005] The present invention provides a load device for simulating normal loading, comprising:

[0006] Inner jacket, inner jacket base, inner jacket pressure cap, sealing outer sleeve, connector, inner retaining ring, transmission part, connecting chuck, bellows, outer connecting sleeve and inner support sleeve;

[0007] One end of the inner jacket is connected to the transmission member, and the other end thereof is connected to one end of the inner jacket base. The inner jacket pressure cap is sleeved on the circumference of the inner jacket, and a sealing outer sleeve, an inner retaining ring and an inner support sleeve are sequentially arranged on the circumference of the inner jacket base. One end of the connecting chuck is connected to the sealing outer sleeve through the inner support sleeve and the inner retaining ring in sequence.

[0008] One end of the bellows is connected to the other end of the inner jacket base through a connector, the outer connecting sleeve is sleeved on the circumference of the bellows, one end of the outer connecting sleeve is connected to the other end of the connecting chuck, and the other end is sleeved with an outer sleeve nut.

[0009] Optionally, it also includes:

[0010] Connecting rod, outer retaining ring, connecting rod end cover, outer support sleeve, outer jacket, outer jacket base and outer jacket compression nut;

[0011] One end of the connecting rod passes through the outer sleeve nut to connect to the other end of the bellows, and the other end passes through the outer retaining ring and the outer support sleeve in turn to connect to the connecting rod end cover, and the outer sleeve of the outer retaining ring and the outer support sleeve is provided with an outer jacket base, one end of the outer jacket base is connected to the outer sleeve nut, and the other end of the outer jacket base is connected to the outer jacket clamping nut through the outer jacket.

[0012] Optionally, the connecting chuck comprises:

[0013] The circumference of one end of the connecting chuck is consistent with the circumference of the outer sleeve.

[0014] Optionally, the outer retaining ring comprises:

[0015] The circumference of the inner retaining ring is consistent with the circumference of the inner thread of the outer sleeve nut.

[0016] Optionally, the connection chuck further includes:

[0017] A sealing portion is also recessed on one end of the connecting chuck close to the sealing outer sleeve, and the circumference of the sealing portion matches the circumference of the inner retaining ring.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The interior of this loading device achieves ultra-high airtightness and good pressure absorption effect through step-by-step sealing, multi-layer casing support and bellows transmission, which significantly enhances the stability and durability of the device, and can maintain reliable operation in high-pressure and high-frequency use environments, effectively avoiding single point failures, and improving the safety and fault tolerance of the system. The optimized design of the pressure cap and the connecting chuck greatly improves the convenience of installation and maintenance, so that the device has a long service life and low maintenance cost, which is very suitable for industrial application scenarios with extremely high requirements for sealing, durability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2It is a structural schematic diagram of the primary seal in the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the secondary seal in the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the four-level seal in the present invention.

[0026] Description of reference numerals:

[0027] 1. Inner jacket; 2. Inner jacket base; 3. Inner jacket pressure cap; 4. Sealing outer sleeve; 5. Inner retaining ring; 6. Transmission member; 7. Connecting chuck; 8. Bellows; 9. Outer connecting sleeve; 10. Inner support sleeve; 11. Connecting rod; 12. Connecting rod end cover; 13. Outer retaining ring; 14. Outer support sleeve; 15. Outer jacket base; 16. Outer jacket pressing nut; 17. Connecting head; 18. Outer sleeve nut; 19. Outer jacket. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other implementation cases obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The functional units with the same labels in the examples of the present invention have the same and similar structures and functions.

[0029] See also Figure 1 The present invention provides a load device for simulating normal loading, comprising:

[0030] Inner jacket 1, inner jacket base 2, inner jacket pressure cap 3, sealing outer sleeve 4, connector 17, inner retaining ring 5, transmission member 6, connecting chuck 7, bellows 8, outer connecting sleeve 9 and inner support sleeve 10;

[0031] One end of the inner jacket 1 is connected to the transmission member 6, and the other end thereof is connected to one end of the inner jacket base 2. The inner jacket 1 is sleeved with an inner jacket pressure cap 3 on its circumference, and the inner jacket base 2 is sequentially ringed with a sealing outer sleeve 4, an inner retaining ring 5 and an inner support sleeve 10 on its circumference. One end of the connecting chuck 7 is sequentially connected to the sealing outer sleeve 4 through the inner support sleeve 10 and the inner retaining ring 5.

[0032] One end of the bellows 8 is connected to the other end of the inner jacket base 2 through a connector 17, and the outer connecting sleeve 9 is sleeved on the circumferential side of the bellows 8. One end of the outer connecting sleeve 9 is connected to the other end of the connecting chuck 7, and the other end thereof is sleeved with an outer sleeve nut 18.

[0033] See also Figure 2 In this embodiment, in actual operation, the end of the transmission member 6 away from the inner jacket 1 is usually connected to the wear test device, so one end of the inner jacket 1 is connected to the transmission member 6, and the other end is connected to one end of the inner jacket base 2. The inner jacket pressure cap 3 can achieve both a fixed connection and a sealing effect. Secondly, the sealing outer sleeve 4 provided on the side of the inner jacket base 2 can also achieve a primary barrier to prevent external gas or impurities from entering, thereby forming a primary seal.

[0034] See also Figure 3 By means of the inner support sleeve 10 and the inner retaining ring 5 which are arranged around the inner jacket base 2, when the inner retaining ring 5 is abutted between the connecting chuck 7 and the sealing outer sleeve 4, a sealed connection is achieved, and the inner support sleeve 10 is used to fill the gap between the inside of the connecting chuck 7 and the inner jacket base 2, thereby achieving a secondary seal.

[0035] One end of the bellows 8 is connected to the other end of the inner jacket base 2 through an inner connecting pipe. It is not only used as a seal, but also plays an important role in micro-motion transmission in the device. And ensure that the seal is not easily damaged. In addition, the material and processing accuracy of the bellows 8 are high, which can effectively maintain deformation and restore to its original state in a high-pressure environment, providing continuous stability. The bellows 8 not only increases the flexibility of the sealing layer, but also reduces the direct impact of high-pressure gas on the device, so that the device can still maintain airtightness when subjected to large pressure fluctuations. In addition, the peripheral side of the bellows 8 is sleeved with an external connecting sleeve 9, one end of the external connecting sleeve 9 is connected to the other end of the connecting chuck 7, and the other end thereof is sleeved with an outer sleeve nut 18. The outer sleeve nut 18 is used to increase the airtightness of the external connecting sleeve 9 and prevent the internal gas from diffusing outward, thereby forming a three-level seal.

[0036] In another embodiment, it also includes:

[0037] Connecting rod 11, outer retaining ring 13, connecting rod end cover 12, outer support sleeve 14, outer jacket 19, outer jacket base 15 and outer jacket clamping nut 16;

[0038] One end of the connecting rod 11 passes through the outer sleeve nut 18 to connect to the other end of the bellows 8, and the other end passes through the outer retaining ring 13 and the outer support sleeve 14 in turn to connect to the connecting rod end cover 12, and the outer retaining ring 13 and the outer support sleeve 14 are provided with an outer jacket base 15 on the outside, one end of the outer jacket base 15 is connected to the outer sleeve nut 18, and the other end is connected to the outer jacket clamping nut 16 through the outer jacket 19.

[0039] See also Figure 4The outer jacket compression nut 16 at the end of the end, the outer jacket 19 is similar to a conical structure with a gap on it, and the outer jacket compression nut is fixed on the outer jacket base 15. The tighter it is screwed, the tighter the cone fit between the outer jacket 19 and the outer jacket compression nut, and the smaller the gap of the outer jacket 19, the tighter the connecting rod end cover 12 is clamped, and the sealing is achieved by reducing the gap to form a four-level seal. This layer mainly plays the final role of anti-leakage. Even if other sealing layers fail, the outer jacket compression nut 16 at the end can still provide effective protection.

[0040] In another embodiment, the connecting chuck 7 comprises:

[0041] The circumference of one end of the connecting chuck 7 is consistent with the circumference of the outer sleeve.

[0042] The circumference of one end of the connecting chuck 7 is set to be consistent with the circumference of the outer sleeve to facilitate the wear test.

[0043] In another embodiment, the outer retaining ring 13 comprises:

[0044] The circumference of the inner retaining ring 5 is consistent with the circumference of the inner thread of the outer sleeve nut 18 .

[0045] The circumference of the inner retaining ring 5 is set to be consistent with the circumference of the inner thread of the outer sleeve nut 18 to further achieve sealing.

[0046] The present invention adopts the multi-layer sleeve structure of this patent to greatly enhance its structural strength. The structures are nested with each other, making the device more stable when subjected to internal and external pressures. In particular, multiple support sleeves and connectors are provided to evenly disperse the stress of each part. The inner and outer support sleeves and the inner jacket 1 and the outer jacket base 15 provide rigid support for the entire device, so that it will not deform or shift when subjected to external forces or pressure fluctuations. The design of the connecting rod 11 and the pressure cap also enhances the overall structural stability, ensuring that the device can maintain its integrity when subjected to high pressure or impact. And the combination of multi-stage sealing, bellows 8 transmission and multi-layer support gives the device extremely high safety. When working under high pressure, even if some sealing layers have problems, other sealing layers can still provide effective protection. The device design has sufficient redundancy, and even under extreme conditions, it is difficult for the gas to leak completely. In addition, due to the high-strength design of the support sleeve, the device can prevent breakage or failure when external impact forces are applied.

[0047] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0048] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A load device for simulating normal loading, characterized in that: include: Inner jacket, inner jacket base, inner jacket pressure cap, sealing outer sleeve, connector, inner retaining ring, transmission part, connecting chuck, bellows, outer connecting sleeve, inner support sleeve, outer sleeve nut; One end of the inner jacket is connected to the transmission member, and the other end thereof is connected to one end of the inner jacket base. The inner jacket pressure cap is sleeved on the circumference of the inner jacket, and a sealing outer sleeve, an inner retaining ring and an inner support sleeve are sequentially arranged on the circumference of the inner jacket base. One end of the connecting chuck is connected to the sealing outer sleeve through the inner support sleeve and the inner retaining ring in sequence. One end of the bellows is connected to the other end of the inner jacket base through a connector, the outer connecting sleeve is sleeved on the circumference of the bellows, one end of the outer connecting sleeve is connected to the other end of the connecting chuck, and the other end is sleeved with an outer sleeve nut.

2. Use of the load device for simulating normal loading as claimed in claim 1, characterized in that: Also includes: Connecting rod, outer retaining ring, connecting rod end cover, outer support sleeve, outer jacket, outer jacket base and outer jacket compression nut; One end of the connecting rod passes through the outer sleeve nut to connect to the other end of the bellows, and the other end passes through the outer retaining ring and the outer support sleeve in turn to connect to the connecting rod end cover, and the outer sleeve of the outer retaining ring and the outer support sleeve is provided with an outer jacket base, one end of the outer jacket base is connected to the outer sleeve nut, and the other end of the outer jacket base is connected to the outer jacket clamping nut through the outer jacket.

3. Use of the load device for simulating normal loading as claimed in claim 1, characterized in that: The connecting chuck comprises: The circumference of one end of the connecting chuck is consistent with the circumference of the outer sleeve.

4. Use of the load device for simulating normal loading as claimed in claim 2, characterized in that: The outer retaining ring comprises: The circumference of the inner retaining ring is consistent with the circumference of the inner thread of the outer sleeve nut.

5. Use of the load device for simulating normal loading as claimed in claim 1, characterized in that: The connecting chuck further comprises: A sealing portion is also recessed on one end of the connecting chuck close to the sealing outer sleeve, and the circumference of the sealing portion matches the circumference of the inner retaining ring.

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