Pressure tapping device of double-layer sleeve

Abstract

The utility model discloses a pressure tapping device of a double-layer sleeve, which comprises a pressure tapping joint hermetically connected on the side wall of an inner sleeve, and a pressure tapping hole is arranged in the pressure tapping joint; the tube seat is connected with the outer sleeve and is arranged outside the outer sleeve; the pressure guide pipe penetrates through the side wall of the outer sleeve and is provided with a pressure guide hole; the pressure guiding pipe penetrates through the pipe seat and is connected with the inner wall of the pipe seat in a sealing manner, one end of the pressure guiding pipe is detachably connected with the pressure tapping connector in a sealing manner, and the pressure guiding hole is communicated with the pressure tapping hole; the pressing assembly is detachably connected with the pipe base and the pressure guiding pipe. The pressure tapping device is suitable for internal flow field pressure tapping of the inner sleeve in the double-layer sleeve, the pressing assembly and the pressure guiding pipe are detachably connected, enough pressing force can be provided, meanwhile, disassembly, assembly and replacement can be convenient and fast, and long-term reliable operation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of reactor thermal hydraulic experiments, in particular to a double-layer sleeve pressure taking device. Background Art

[0002] During reactor thermal-hydraulic experiments and reactor prototypes, pressure and differential pressure measurements are required using pressure-sampling structures. Double-layer flow structures, such as those inside and outside short casings or inside and outside the core, experience a certain pressure differential between them. These structures are exposed to high temperature and high pressure, and the gap between the internal and external flow fields is small. Therefore, a suitable pressure-sampling structure is required to measure the pressure and differential pressure within the internal flow field.

[0003] The existing technology usually adopts the method of welding the pressure-leading pipe to the outside, which requires corresponding welding space and cannot be disassembled after welding. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a double-layer sleeve pressure taking device.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a double-layer sleeve pressure taking device, comprising:

[0006] A pressure tapping joint is sealed and connected to the side wall of the inner sleeve, and a pressure tapping hole is provided inside the pressure tapping joint;

[0007] a pipe seat connected to the outer sleeve and arranged outside the outer sleeve;

[0008] A pressure-inducing tube passing through the side wall of the outer sleeve is provided with a pressure-inducing hole; the pressure-inducing tube passes through the tube seat and is sealedly connected to the inner wall of the tube seat, and one end of the pressure-inducing tube is detachably and sealedly connected to the pressure-taking joint, and the pressure-inducing hole is communicated with the pressure-taking hole;

[0009] The pressing assembly is detachably connected to the pipe seat and the pressure-guiding pipe respectively.

[0010] In some embodiments, the pressure-inducing tube sequentially includes a first connecting section with a threaded hole, a pressure-inducing body penetrating the side wall of the outer sleeve, and a first limiting portion provided on the pressure-inducing body, the first connecting section is threadedly fixed to the pressure-taking connector, the pressure-inducing body is sealedly connected to the pressure-taking connector and the pipe seat respectively, and the first limiting portion is connected and fixed to the clamping assembly;

[0011] The pressure-inducing hole runs through the entire length of the pressure-inducing body. The pressure-inducing hole is arranged opposite to the pressure-taking hole and is in communication with the pressure-taking hole directly or through the threaded hole.

[0012] In some embodiments, the pressure-drawing hole includes a first hole segment and a second hole segment, the diameter of the first hole segment is the same as the diameter of the pressure-drawing hole, and the diameter of the second hole segment is greater than or equal to the diameter of the first hole segment.

[0013] In some embodiments, the pressure-taking device further comprises a plurality of first sealing rings, and opposite ends of the plurality of first sealing rings are respectively in sealing contact with the pressure-taking connector and the end portion of the pressure-taking body.

[0014] In some embodiments, the clamping assembly includes a clamping member and a limiting member, the clamping member is sleeved on the pressure-inducing body and sealed with the pressure-inducing body, and the clamping member is detachably and sealedly connected to the tube seat; the limiting member is detachably connected to the clamping member and the first limiting part respectively.

[0015] In some embodiments, the pressure-taking device further comprises a plurality of second sealing rings, which are sleeved on the pressure-taking body and respectively in sealing contact with the pipe seat and the pressing member.

[0016] In some embodiments, the pipe seat is provided with a through hole and a sealing installation hole, the diameter of the through hole is larger than the outer diameter of the pressure-inducing body, and the diameter of the sealing installation hole is larger than the diameter of the through hole;

[0017] A plurality of second sealing rings are arranged in the sealing installation hole and abut against the outer wall surface of the sealing installation hole.

[0018] In some embodiments, the pressure-taking device further includes a compression ring, which is disposed between the second sealing ring and the compression member and presses against the second sealing ring and the compression member respectively.

[0019] In some embodiments, the limiting member includes a limiting body and a second limiting portion provided on the limiting body, and the second limiting portion is connected to the first limiting portion to achieve limiting.

[0020] In some embodiments, the pressure tapping joint includes a mounting section inserted through and welded to the inner sleeve and a protruding section protruding from the side wall of the inner sleeve, and the protruding section is threadedly connected to the pressure-guiding tube and sealed and fixed.

[0021] By implementing the utility model, the following beneficial effects are achieved:

[0022] The pressure-taking device of the double-layer sleeve of the present invention comprises: a pressure-taking joint sealedly connected to the side wall of the inner sleeve, with a pressure-taking hole provided inside the pressure-taking joint; a pipe seat connected to the outer sleeve and provided on the outside of the outer sleeve; a pressure-guiding tube penetrating the side wall of the outer sleeve, with a pressure-guiding hole provided; the pressure-guiding tube penetrating the pipe seat and sealedly connected to the inner wall of the pipe seat, and one end of the pressure-guiding tube being detachably and sealably connected to the pressure-taking joint, the pressure-guiding hole being communicated with the pressure-guiding hole; a clamping assembly detachably connected to the pipe seat and the pressure-guiding tube, respectively. The pressure-taking device of the present invention is suitable for taking pressure from the internal flow field of the inner sleeve of a double-layer sleeve. The clamping assembly and the pressure-guiding tube are both detachably connected. While being able to provide sufficient clamping force, they can also be conveniently disassembled and replaced to achieve long-term and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0024] Figure 1 This is a schematic structural diagram of a pressure taking device according to an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 Structure A in the middle is an enlarged schematic diagram of the pressure tapping joint and part of the pressure lead pipe;

[0026] Figure 3 yes Figure 1 An enlarged structural diagram of the middle part of the pressure-leading pipe, pipe seat and clamping assembly. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0029] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or chemical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0031] The double-layer sleeve includes an inner sleeve 100 and an outer sleeve 200. The inner sleeve 100 has an internal flow field, and an external flow field is provided between the inner sleeve 100 and the outer sleeve 200. A flow environment with a certain pressure differential is formed between the inner sleeve 100 and the outer sleeve 200. That is, there is a certain pressure differential between the internal and external flow fields, and the gap between the inner sleeve 100 and the outer sleeve 200 is small. The outer sleeve 200 is subjected to high temperature and high pressure. In reactor thermal hydraulic experiments and reactor prototypes, it is necessary to use a pressure sampling structure to draw out the internal flow field and measure pressure and pressure differential. Therefore, a reasonable pressure sampling structure is required to measure the pressure and pressure differential of the internal flow field.

[0032] See also Figures 1 to 3 An embodiment of the present invention discloses a double-layer sleeve pressure-taking device, which is suitable for taking pressure from the internal flow field of the inner sleeve 100 of the double-layer sleeve in a flow environment with a certain pressure difference.

[0033] The pressure-taking device includes: a pressure-taking connector 1, a pipe seat 2, a pressure-guiding pipe 3, and a clamping assembly 4. The pressure-taking connector 1 is sealed and connected to the side wall of the inner sleeve 100. A pressure-taking hole 11 is provided inside the pressure-taking connector 1. The pressure-taking hole 11 runs through the entire length of the pressure-taking connector 1 to connect to the internal flow field of the inner sleeve 100. For example, the pressure-taking connector 1 includes a mounting section 12 that is inserted and welded to the inner sleeve 100 and a protruding section 13 that protrudes from the side wall of the inner sleeve 100. The protruding section 13 is screwed and sealed to the pressure-guiding pipe 3. The pipe seat 2 is connected to the outer sleeve 200 and is arranged on the outside of the outer sleeve 200. For example, the pipe seat 2 is welded to the outer sleeve 200. The pressure-guiding pipe 3 runs through the side wall of the outer sleeve 200, and a gap is left between the side wall of the outer sleeve 200 to prevent the side wall of the outer sleeve 200 from obstructing the passage of the pressure-guiding pipe 3. The pressure-guiding tube 3 passes through the tube seat 2 and is sealed and connected to the inner wall of the tube seat 2, and one end of the pressure-guiding tube 3 is detachably and sealedly connected to the pressure-taking connector 1. The external flow field is prevented from being output through the gap between the side wall of the outer sleeve 200 and the pressure-guiding tube 3. The pressure-guiding tube 3 is provided with a pressure-guiding hole 31, which is connected to the pressure-taking hole 11. The other end of the pressure-guiding hole 31 can be connected to the external structure, so that the internal flow field of the inner sleeve 100 can be led out of the external structure. The clamping assembly 4 is detachably connected to the tube seat 2 and the pressure-guiding tube 3 respectively. The pressure-guiding tube 3 can be fixed on the tube seat 2, and the connection between the pressure-guiding tube 3 and the pressure-taking connector 1 can be strengthened. Among them, the external structure can be an external connecting pipe or an external detection device. The external structure is not the structure of the pressure-taking device of the present invention and will not be described here.

[0034] In some embodiments, as Figure 2 As shown, the pressure tapping connector 1 includes a mounting section 12 that is inserted through and welded to the inner sleeve 100, and a protruding section 13 that protrudes from the sidewall of the inner sleeve 100. The protruding section 13 is threadedly connected to the pressure-inducing tube 3 and sealed therewith. For example, the protruding section may have external threads, the pressure-inducing tube 3 may have corresponding internal threads, and the protruding section 13 may be threadedly connected to the pressure-inducing tube 3. Alternatively, in other embodiments, the protruding section may have internal threads, the pressure-inducing tube 3 may have corresponding external threads, and the protruding section 13 may be threadedly connected to the pressure-inducing tube 3. The sealed connection between the protruding section 13 and the pressure-inducing tube 3 may be achieved using a sealing ring, sealing tape, or the like.

[0035] In some embodiments, see also Figure 3The pressure-inducing tube 3 includes, in sequence, a first connecting section 32 with a threaded hole, a pressure-inducing body 33 that passes through the side wall of the outer sleeve 200, and a first limiting portion 34 provided on the pressure-inducing body 33. The first connecting section 32 is screwed and fixed to the pressure-taking connector 1, the pressure-inducing body 33 is sealed and connected to the pressure-taking connector 1 and the pipe seat 2 respectively, and the first limiting portion 34 is connected and fixed to the clamping assembly 4. The pressure-inducing hole 31 passes through the entire length of the pressure-inducing body 33. The pressure-inducing hole 31 is arranged opposite to the pressure-taking hole 11 and is connected directly or through a threaded hole. Among them, the first connecting section 32 is mainly used to connect the pressure-taking connector 1, the pressure-inducing body 33 is mainly used to transmit pressure, and the first limiting portion 34 is mainly used to connect the clamping assembly 4 to achieve axial limitation of the pressure-inducing tube 3 as a whole, and cooperate with the clamping assembly 4 to prevent the pressure-inducing tube 3 from loosening or even popping out due to the pressure difference.

[0036] In some embodiments, the pressure-introducing hole 31 includes a first hole segment 311 and a second hole segment 312. The diameter of the first hole segment 311 is the same as the diameter of the pressure-taking hole 11, and the diameter of the second hole segment 312 is greater than or equal to the diameter of the first hole segment 311. The internal flow field, the first hole segment 311, and the second hole segment 312 can form a Venturi tube structure, which can accelerate pressure transmission in the internal flow field.

[0037] In some embodiments, the pressure-taking device further comprises a plurality of first sealing rings 5, whose opposite ends respectively seal against the pressure-taking connector 1 and the end of the pressure-inducing body 33. Specifically, the plurality of first sealing rings 5 ​​can respectively seal against the outer end of the protruding section 13 and the end of the pressure-inducing body 33. In this case, due to the thickness of the plurality of first sealing rings 5, the pressure-inducing hole 31 and the pressure-taking hole 11 cannot directly contact each other. Instead, the pressure-inducing hole 31 and the pressure-inducing hole 11 are interconnected via a threaded hole. The number of first sealing rings 5 ​​can be set according to actual needs, such as one, two, or three. It is understood that in other embodiments, the opposite ends of the plurality of first sealing rings 5 ​​can respectively seal against the pressure-taking connector 1 and the end of the first connecting section 32 to achieve the same sealing effect. In this case, when the length of the protruding section 13 is the same as that of the first connecting section 32 and the plurality of first sealing rings 5, the pressure-inducing hole 31 and the pressure-inducing hole 11 can directly contact each other. The pressure-inducing hole 31 and the pressure-inducing hole 11 are interconnected via a threaded hole. The first sealing ring 5 can be selected according to the use environment. For example, a C ring, a graphite gasket, etc. can be selected in a high temperature and high pressure environment, and an O ring, a polytetrafluoroethylene gasket, etc. can be selected in a low temperature environment.

[0038] In some embodiments, as Figure 3As shown, the clamping assembly 4 includes a clamping member 41 and a limiting member 42. The clamping member 41 is sleeved on the pressure-inducing body 33 and is sealed with the pressure-inducing body 33. The clamping member 41 is detachably and sealedly connected to the tube seat 2. The limiting member 42 is detachably connected to the clamping member 41 and the first limiting portion 34, respectively. The clamping member 41 is mainly used to fix the clamping member 41 itself on the seat body and to close the gap between the tube seat 2 and the pressure-inducing tube 3 to ensure sealing. It can be understood that the sealing connection can be achieved by means of a sealing ring, sealing tape, glue, etc. The limiting member 42 is mainly used to limit the axial movement of the pressure-inducing tube 3. Preferably, in this embodiment, the tube seat 2 is screwed and fixed to the clamping member 41; the limiting member 42 is screwed and fixed to the clamping member 41. The clamping member 41 and the limiting member 42 are respectively cylindrical structures, such as nuts.

[0039] In some embodiments, the pressure-taking device further includes a plurality of second sealing rings 6, which are sleeved on the pressure-inducing body 33 and are respectively sealed against the tube seat 2 and the clamping member 41. Among them, the plurality of second sealing rings 6 can respectively seal against the outer wall of the pressure-inducing body 33, the inner wall of the seat body, and directly or indirectly against the inner end of the clamping member 41, thereby achieving a sealing effect through three-sided abutment. The number of second sealing rings 6 can be set according to actual needs, such as one, two, three, etc. The first sealing ring 5 can be selected according to the use environment. For example, C-rings, graphite pads, etc. can be selected in high-temperature and high-pressure environments, and O-rings, polytetrafluoroethylene pads, etc. can be selected in low-temperature environments.

[0040] In some embodiments, the tube base 2 is provided with a through hole 21 and a sealing mounting hole 22. The diameter of the through hole 21 is larger than the outer diameter of the pressure-inducing body 33, and the diameter of the sealing mounting hole 22 is larger than the diameter of the through hole 21. A plurality of second sealing rings 6 are disposed within the sealing mounting hole 22 and abut against the outer wall of the sealing mounting hole 22. Under the pressure of the pressing member 41, the plurality of second sealing rings 6 also abut against the end wall of the sealing mounting hole 22.

[0041] In some embodiments, the pressure-taking device further includes a compression ring 7, which is disposed between the second sealing ring 6 and the compression member 41 and presses against the second sealing ring 6 and the compression member 41, respectively. The compression ring 7 is made of a relatively hard material, such as a stainless steel gasket, and transmits a relatively uniform external pressure to the second sealing ring 6, where the external pressure comes from the compression member 41.

[0042] In some embodiments, the limiting member 42 includes a limiting body 421 and a second limiting portion 422 provided on the limiting body 421, wherein the second limiting portion 422 is connected to the first limiting portion 34 to achieve limiting. The limiting body 421 is used to connect to the pressing member 41 and provide a locking function, and the second limiting portion 422 is used to limit the axial movement of the pressure-inducing tube 3. For example, the first limiting portion 34 is a fixed block protruding from the pressure-inducing body, which can be two fixed blocks arranged opposite to each other, multiple fixed blocks arranged symmetrically, or a fixed ring. Correspondingly, the second limiting portion 422 is also two fixed blocks arranged opposite to each other, multiple fixed blocks arranged symmetrically, or a fixed ring. When installed and fixed, the second limiting portion 422 is docked and pressed against the first limiting portion 34, thereby preventing the pressure-inducing tube 3 from rushing out due to the high pressure of the internal flow field of the inner sleeve 100.

[0043] By implementing the utility model, the following beneficial effects are achieved:

[0044] The double-sleeve pressure-taking device of this utility model is suitable for taking pressure from the internal flow field of the inner sleeve 100 of a double-sleeve system. A first sealing ring 5 is provided between the pressure-inducing tube 3 and the pressure-taking connector 1, enhancing sealing reliability. The compression assembly 4 compresses the second sealing gasket, effectively achieving a seal. The tube seat 2 lacks a sealing surface, ensuring long-term reliable operation. Both the compression assembly 4 and the pressure-inducing tube 3 are detachably connected, providing sufficient compression force while allowing for convenient assembly and disassembly, ensuring long-term reliable operation.

[0045] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above embodiments or technical features can be freely combined, and several deformations and improvements can be made, which all fall within the scope of protection of the present invention, that is, the embodiments described in "some embodiments" can be freely combined with any of the above and below embodiments. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A double-layer sleeve pressure device, characterized in that: include: A pressure tapping connector (1) is sealed and connected to the side wall of the inner sleeve (100), wherein a pressure tapping hole (11) is provided inside the pressure tapping connector (1); a pipe seat (2) connected to the outer sleeve (200) and arranged outside the outer sleeve (200); A pressure-inducing tube (3) passing through the side wall of the outer sleeve (200) is provided with a pressure-inducing hole (31); the pressure-inducing tube (3) passes through the tube seat (2) and is sealedly connected to the inner wall of the tube seat (2), and one end of the pressure-inducing tube (3) is detachably sealedly connected to the pressure-taking joint (1), and the pressure-inducing hole (31) is communicated with the pressure-taking hole (11); The pressing assembly (4) is detachably connected to the pipe seat (2) and the pressure-guiding pipe (3).

2. The double-layer sleeve pressure-taking device according to claim 1, characterized in that: The pressure-inducing tube (3) comprises, in sequence, a first connecting section (32) provided with a threaded hole, a pressure-inducing body (33) penetrating the side wall of the outer sleeve (200), and a first limiting portion (34) provided on the pressure-inducing body (33); the first connecting section (32) is threadedly fixed to the pressure-taking connector (1); the pressure-inducing body (33) is sealedly connected to the pressure-taking connector (1) and the pipe seat (2) respectively; and the first limiting portion (34) is connected and fixed to the pressing assembly (4); The pressure-inducing hole (31) runs through the entire length of the pressure-inducing body (33). The pressure-inducing hole (31) is arranged opposite to the pressure-taking hole (11) and is in communication with the pressure-taking hole (11) directly or through the threaded hole.

3. The double-layer sleeve pressure-taking device according to claim 2, characterized in that: The pressure-inducing hole (31) comprises a first hole section (311) and a second hole section (312), wherein the diameter of the first hole section (311) is the same as the diameter of the pressure-taking hole (11), and the diameter of the second hole section (312) is greater than or equal to the diameter of the first hole section (311).

4. The double-layer sleeve pressure-taking device according to claim 2, characterized in that: The pressure taking device further comprises a plurality of first sealing rings (5), the opposite ends of which are in sealing contact with the pressure taking connector (1) and the end of the pressure drawing body (33), respectively.

5. The double-layer sleeve pressure-taking device according to claim 2, characterized in that: The clamping assembly (4) includes a clamping member (41) and a limiting member (42), wherein the clamping member (41) is sleeved on the pressure-inducing body (33) and is sealed with the pressure-inducing body (33), and the clamping member (41) is detachably and sealably connected to the pipe seat (2); the limiting member (42) is detachably connected to the clamping member (41) and the first limiting portion (34), respectively.

6. The double-layer sleeve pressure-taking device according to claim 5, characterized in that: The pressure taking device further comprises a plurality of second sealing rings (6), which are sleeved on the pressure taking body (33) and are in sealing contact with the pipe seat (2) and the pressing member (41) respectively.

7. The double-layer sleeve pressure-taking device according to claim 6, characterized in that: The pipe seat (2) is provided with a through hole (21) and a sealing installation hole (22), the diameter of the through hole (21) is larger than the outer diameter of the pressure-inducing body (33), and the diameter of the sealing installation hole (22) is larger than the diameter of the through hole (21); A plurality of the second sealing rings (6) are arranged in the sealing installation hole (22) and abut against the outer wall surface of the sealing installation hole (22).

8. The double-layer sleeve pressure-taking device according to claim 6 or 7, characterized in that: The pressure-taking device further comprises a clamping ring (7), which is arranged between the second sealing ring (6) and the clamping member (41) and presses against the second sealing ring (6) and the clamping member (41) respectively.

9. The double-layer sleeve pressure-taking device according to any one of claims 5 to 7, characterized in that: The limiting member (42) comprises a limiting body (421) and a second limiting portion (422) provided on the limiting body (421), wherein the second limiting portion (422) is connected to the first limiting portion (34) to achieve limiting.

10. The double-layer sleeve pressure-taking device according to any one of claims 1 to 7, characterized in that: The pressure-taking joint (1) comprises a mounting section (12) inserted through and welded to the inner sleeve (100) and a protruding section (13) protruding from the side wall of the inner sleeve (100); the protruding section (13) is threadedly connected to the pressure-guiding tube (3) and sealed and fixed.

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