CN119147216A - Hydraulic characteristic verification test tool - Google Patents
Hydraulic characteristic verification test tool Download PDFInfo
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- CN119147216A CN119147216A CN202411200228.5A CN202411200228A CN119147216A CN 119147216 A CN119147216 A CN 119147216A CN 202411200228 A CN202411200228 A CN 202411200228A CN 119147216 A CN119147216 A CN 119147216A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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Abstract
The invention discloses a hydraulic characteristic verification test tool which comprises a first-stage test tool and a second-stage test tool, wherein the first-stage test tool comprises a grid plate assembly, a bottom cylinder, a taper pipe, a lower joint, a cylinder, an upper joint, a water inlet cylinder and a water inlet variable diameter cylinder, the water inlet cylinder and the water inlet variable diameter cylinder are welded, the upper end of the cylinder is welded with the upper joint, the lower end of the cylinder is bolted with the lower joint, the water inlet cylinder is connected with the cylinder through a flange, the cylinder is connected with the grid plate assembly through a flange, the grid plate assembly is connected with the bottom cylinder through a flange, the bottom cylinder is welded with the taper pipe, the second-stage test tool comprises an upper cylinder, a taper section, a middle cylinder, a lower cylinder, the grid plate assembly, the bottom cylinder and the taper pipe, the upper cylinder is welded with the taper section, an inlet pipe is vertically welded on the side surface of the upper cylinder, and the lower cylinder is respectively connected with the middle cylinder and the grid plate assembly through a flange. The test tool is small in size, better in sealing performance and stronger in adaptability.
Description
Technical Field
The invention relates to the technical field of thermal hydraulic research, in particular to a hydraulic characteristic verification test tool.
Background
In order to verify the reliability and rationality of the design of the irradiation test device, the parameter monitoring equipment of the evaluation device, the feasibility of the design of the internal structure, the conditions of the operability range of the test device, the relation between the flow and the pressure difference and the like are obtained through the adjustment of the external loop parameters, and the hydraulic characteristic verification test tool is a necessary means for realizing the requirements. Therefore, the design of the hydraulic characteristic verification test tool is important to the design and performance evaluation of the novel irradiation test device.
The hydraulic characteristic verification test tool is used as important equipment for verifying the performance of the irradiation test device, and plays roles of parameter adjustment and matching with the in-pile environment in the performance evaluation and design rationality verification processes of the irradiation test device. Along with the increase of new materials and new fuel irradiation, the novel irradiation test device structure is also endlessly layered, the requirements on adaptability, multifunction and operation convenience of the hydraulic characteristic verification test tool are stricter, the structure of the existing hydraulic characteristic verification test tool is complex, the flexibility is poor, and a plurality of inconveniences are brought for implementation of hydraulic characteristic tests.
Based on the above requirements, the hydraulic characteristic test fixture with simple structure, powerful function and capability of meeting the verification of multiple structures and multiple parameters is required to be redesigned, so that the test cost is saved, and the test period is shortened.
Disclosure of Invention
The invention aims to provide the hydraulic characteristic verification test tool which has small volume, better sealing performance and stronger adaptability, can be used for verifying the rationality of the design of an irradiation test device, and can meet the requirements of disassembling and replacing parts and adjusting test schemes at any time in the test process without influencing the acquisition of test data.
The invention is realized by the following technical scheme:
The invention provides a hydraulic characteristic verification test tool, which comprises a first stage test tool and a second stage test tool, wherein the first stage test tool comprises a grid plate assembly, a bottom cylinder body, a taper pipe, a lower joint, a cylinder body, an upper joint, a water inlet cylinder and a water inlet reducing cylinder, the water inlet cylinder and the large-diameter end of the water inlet reducing cylinder are welded, the upper end of the cylinder body is welded with the upper joint, the lower end of the water inlet cylinder is connected with the lower joint through a screw, the lower end of the water inlet cylinder is connected with the upper end of the cylinder body through a flange, the lower end of the cylinder body is connected with the upper end of the grid plate assembly through a flange, and the lower end of the grid plate assembly is connected with the upper end of the bottom cylinder body through a flange, and the lower end of the bottom cylinder body is welded with the large-diameter end of the taper pipe;
The second-stage test fixture comprises an upper cylinder, a cone section, a middle cylinder, a lower cylinder, a grid plate assembly, a bottom cylinder and a cone pipe, wherein the grid plate assembly, the bottom cylinder and the cone pipe are arranged in the first-stage test fixture, the lower end of the upper cylinder is welded with the large-diameter end of the cone section, the small-diameter end of the cone section is welded with the upper end of the middle cylinder, an inlet pipe is vertically welded on the side surface of the upper cylinder, and the upper end and the lower end of the lower cylinder are respectively connected with the lower end of the middle cylinder and the upper end of the grid plate assembly through flanges.
In the technical scheme, the grid plate assembly, the bottom cylinder body and the taper pipe are universal parts in the first-stage test fixture and the second-stage test fixture. Because the detachable connection is formed between each part in the first-stage test fixture and the second-stage test fixture through the flange, the parts can be detached and replaced at any time in the test process, and the test scheme can be adjusted. The test tool is small in size, better in sealing performance and stronger in adaptability, and can replace the existing test tool with large size, complex structure and high processing requirement. The first-stage test fixture is adopted for the hydraulic test requiring frequent replacement of the internal components, the characteristics of simple structure, small weight and convenient operation can be utilized to rapidly complete the test, and the second-stage test fixture is adopted to evaluate the performance of the irradiation test device after the screening of the basic components is completed.
As a preferable mode of the invention, the water inlet reducing cylinder and the small diameter end of the taper pipe are provided with flanges, and the upper end of the upper cylinder is provided with a flange. Through setting up the flange, be convenient for connect experimental frock in experimental return circuit.
As a preferable scheme of the invention, the flange connection part of the first-stage test tool and the second-stage test tool is provided with a sealing gasket. Through setting up sealed pad, form sealing connection through flange and sealed pad between each part in the experimental frock, avoid causing the cooling water leakage.
As a preferable scheme of the invention, the side surfaces of the water inlet cylinder, the cylinder body and the bottom cylinder body of the first-stage test tool are provided with pressure guiding pipes, and the side surface of the inlet pipe of the second-stage test tool is provided with the pressure guiding pipes.
As the preferable scheme of the invention, the three pressure guiding pipes arranged on the water inlet cylinder, the cylinder body, the bottom cylinder body and the inlet pipe are a group, and all the pressure guiding pipes are arranged at the same axial height and are uniformly distributed. By arranging the pressure guiding pipe according to the requirements, the parts can be subjected to multipoint pressure taking measurement along the circumferential direction, so that the accuracy of pressure measurement data is ensured.
As a preferable scheme of the invention, the pressure guiding pipe measuring point on the inlet pipe is arranged at 500-650 mm from the central line of the upper cylinder, the pressure guiding pipe measuring point on the water inlet cylinder is arranged at 400-500 mm from the upper end of the upper joint, the pressure guiding pipe measuring point on the bottom cylinder is arranged at 450-550 mm from the lower end of the grid plate assembly, and the pressure guiding pipe measuring point on the cylinder is arranged at 300-350 mm from the upper end of the grid plate assembly.
As the preferable scheme of the invention, the grid plate assembly is internally provided with a stepped hole, the inlet is provided with a cone angle structure, a plurality of groups of sealing grooves are processed, and O-shaped sealing gaskets and square sealing gaskets are arranged in the sealing grooves. The two sealing gaskets are arranged in the sealing groove and are mainly used for sealing a gap between the grid plate assembly and the lower joint.
As a preferable scheme of the invention, the included angle of the inlet taper holes of the grid plate assembly is 60-65 degrees, the number of the sealing grooves is 2-3 groups, the O-shaped sealing gasket is made of rubber, and the square sealing gasket is made of polyethylene. Through setting up the taper hole of above-mentioned angle, when the experimental frock of equipment, this taper hole can lead to the lower clutch, in the grid plate subassembly of being convenient for inserts smoothly, simultaneously because polyethylene hardness is big, can guarantee that rubber packing ring can not pack into in the clearance between grid plate subassembly inner hole wall and the lower clutch outer wall, rubber packing ring then realizes the seal to the clearance.
As a preferable scheme of the invention, the lower joint can be inserted into the grid plate assembly, a gap of 0.5 mm-1 mm is reserved between the inner hole wall of the grid plate assembly and the outer wall of the lower joint, and the O-shaped sealing gasket and the square sealing gasket are in interference fit with the outer wall of the lower joint. By limiting the value of the gap between the grid plate assembly and the lower joint to the above value, a positioning effect can be formed when the lower joint is inserted into the inner hole of the grid plate assembly, and meanwhile, the O-shaped sealing gasket and the square sealing gasket are in interference fit with the outer wall of the lower joint, so that the gap can be well sealed.
As a preferable scheme of the invention, the position of the sealing groove is arranged at a position 20 mm-30 mm away from the outlet of the grid plate assembly. By arranging the sealing groove at the position of the inner hole of the grid plate assembly, the O-shaped sealing gasket and the square sealing gasket can be conveniently installed and removed in the test.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. The hydraulic characteristic verification test tool can be used for verifying the rationality of the design of the irradiation test device, and simultaneously can meet the requirements of disassembling and replacing components and adjusting a test scheme at any time in the test process, and the acquisition of test data is not influenced;
2. The hydraulic characteristic verification test tool has small volume, better sealing performance and stronger adaptability, and can replace the existing test tool with large volume, complex structure and high processing requirement;
3. The hydraulic characteristic verification test tool is provided with a plurality of pressure measuring points, so that the pressure difference measurement of different positions and different internal structural members of the test device can be met, and the design rationality of the feedback device can be well improved;
4. The hydraulic characteristic verification test tool divides the whole hydraulic characteristic test into two stages, adopts the first-stage test tool for the hydraulic test requiring frequent replacement of internal components, can rapidly complete the test by utilizing the characteristics of simple structure, small weight and convenient operation, and can evaluate the performance of the irradiation test device by adopting the second-stage test tool after the screening of basic components is completed.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are needed in the examples will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained from these drawings without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic diagram of a second stage hydraulic test tooling structure in the present invention;
FIG. 2 is a schematic diagram of a first stage hydraulic test tooling structure in the present invention;
FIG. 3 is a schematic view of a grid plate assembly according to the present invention;
Fig. 4 is a schematic diagram of a partial structure at I in fig. 3 according to the present invention.
In the drawings, the reference numerals and corresponding part names:
1-upper cylinder, 2-inlet pipe, 3-cone section, 4-middle cylinder, 5-lower cylinder, 6-grid plate assembly, 7-bottom cylinder, 8-pressure guiding pipe, 9-cone pipe, 10-lower joint, 11-cylinder, 12-upper joint, 13-water inlet cylinder, 14-water inlet reducing cylinder, 15-O-shaped sealing gasket and 16-square sealing gasket.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, the terms used herein are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the above description of the drawings are intended to cover non-exclusive inclusions.
In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In the description of the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B, and may indicate that a exists, and a and B exist at the same time, and B exists. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In the embodiments of the present application, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are merely illustrative and should not be construed as limiting the application in any way.
In the description of the embodiments of the present application, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two), unless otherwise specifically defined.
In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.
In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "fixed" and the like are to be construed broadly and include, for example, fixed connection, detachable connection, or integral therewith, mechanical connection, electrical connection, direct connection, indirect connection via an intermediary, communication between two elements, or interaction between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
Irradiation testing is an important step in the development of nuclear materials, which provides important feedback to the design of front-end materials and can provide technical verification for engineering applications. The irradiation test device is a necessary condition for carrying out irradiation test, and also determines whether the irradiation test condition can meet the expected requirement to a great extent.
The design of the hydraulic characteristic verification test tool is crucial to the design and performance evaluation of the novel irradiation test device. Along with the increase of new materials and new fuel irradiation, the novel irradiation test device structure is also endlessly layered, the requirements on adaptability, multifunction and operation convenience of the hydraulic characteristic verification test tool are stricter, the structure of the existing hydraulic characteristic verification test tool is complex, the flexibility is poor, and a plurality of inconveniences are brought for implementation of hydraulic characteristic tests.
Based on the above, through intensive research, the applicant invents a hydraulic characteristic verification test tool with simple structure and powerful function, which can be used for verifying the rationality of the design of the irradiation test device, and simultaneously can meet the requirements of disassembling and replacing components and adjusting test schemes at any time in the test process without influencing the acquisition of test data.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a second stage hydraulic test fixture according to the present application, fig. 2 is a schematic structural diagram of a first stage hydraulic test fixture according to the present application, fig. 3 is a schematic structural diagram of a grid plate assembly according to the present application, and fig. 4 is a schematic structural diagram of a part I in fig. 3 according to the present application.
The hydraulic characteristic verification test tool comprises a first stage test tool and a second stage test tool, wherein the first stage test tool comprises a grid plate assembly 6, a bottom cylinder 7, a taper pipe 9, a lower joint 10, a cylinder 11, an upper joint 12, a water inlet cylinder 13 and a water inlet reducing cylinder 14, the water inlet cylinder 13 and the large diameter end of the water inlet reducing cylinder 14 are welded, the upper joint 12 is welded at the upper end of the cylinder 11, the lower end of the cylinder 11 is connected with the lower joint 10 through a screw, the lower end of the water inlet cylinder 13 is connected with the upper end of the cylinder 11 through a flange, the lower end of the cylinder 11 is connected with the upper end of the grid plate assembly 6 through a flange, the lower end of the grid plate assembly 6 is connected with the upper end of the bottom cylinder 7 through a flange, and the lower end of the bottom cylinder 7 is welded with the large diameter end of the taper pipe 9;
The second-stage test fixture comprises an upper cylinder 1, a cone section 3, a middle cylinder 4, a lower cylinder 5, a grid plate assembly 6, a bottom cylinder 7 and a cone pipe 9, wherein the grid plate assembly 6, the bottom cylinder 7 and the cone pipe 9 are arranged in the first-stage test fixture, the lower end of the upper cylinder 1 is welded with the large-diameter end of the cone section 3, the small-diameter end of the cone section 3 is welded with the upper end of the middle cylinder 4, an inlet pipe 2 is vertically welded on the side surface of the upper cylinder 1, and the upper end and the lower end of the lower cylinder 5 are respectively connected with the lower end of the middle cylinder 4 and the upper end of the grid plate assembly 6 through flanges.
The components in the first stage test fixture and the second stage test fixture of the embodiment are all pipe structures, wherein the first stage test fixture forms a water flow inlet and outlet channel through the water inlet reducing cylinder 14 and the taper pipe 9, and the first stage test fixture is mainly used for screening throttling components and the like in the irradiation test device. The second-stage test fixture forms a water flow inlet and outlet passage through the inlet pipe 2 and the taper pipe 9, and is mainly used for verifying the performance of the irradiation test device.
The water inlet reducing cylinder 14 and the water inlet cylinder 13 in the first-stage test fixture are welded into a whole I, the upper joint 12 and the cylinder 11 are welded into a whole II, the bottom cylinder 7 and the taper pipe 9 are welded into a whole III, and the lower joint 10 and the grid plate assembly 6 are added, so that the first-stage test fixture is composed of five detachable parts.
The upper cylinder 1, the inlet pipe 2, the cone section 3 and the middle cylinder 4 in the second stage test fixture are welded into a whole I, the bottom cylinder 7 and the cone pipe 9 are welded into a whole II, and the lower cylinder 5 and the grid plate assembly 6 are added, so that the second stage test fixture consists of four detachable parts.
Because each part in the first-stage test fixture and the second-stage test fixture is connected through the flange, assembly or disassembly, sectional transportation and the like of the fixtures are realized, and meanwhile mutual universality of parts of the first-stage test fixture and the second-stage test fixture is realized. The flange structure of the connection portion between each part of the first stage test fixture and the second stage test fixture is not shown in the drawings.
The grid plate assembly 6, the bottom cylinder 7 and the taper pipe 9 in the embodiment of the application are universal parts in the first-stage test fixture and the second-stage test fixture. The flange types of connection of all parts in the first-stage test tool and the second-stage test tool are consistent, and the interfaces are matched, so that the parts can be detached and replaced at any time in the test process, and the test scheme can be adjusted. The lower end of the cylinder 11 is connected with the upper end of the grid plate assembly 6 through a flange when the first-stage test fixture is assembled, and the lower end of the lower cylinder 5 is connected with the upper end of the grid plate assembly 6 through a flange when the second-stage test fixture is assembled.
According to some embodiments of the present application, the water inlet reducing cylinder 14 and the small diameter end of the taper pipe 9 in the first stage test fixture are provided with flanges (not shown in the figure), through which both ends of the first stage test fixture are connected in a test loop. Flanges are arranged at the upper end of the upper cylinder 1 and the end part of the inlet pipe 2in the second-stage test fixture. The flange at the upper end of the upper cylinder body 1 is mainly used for forming sealing connection with the flange on the irradiation test device after the irradiation test device is inserted into the second-stage test tool. In the second stage test, the second stage test fixture is connected in a test loop through flanges at the ends of the inlet pipe 2 and the taper pipe 9.
According to some embodiments of the application, the flange connection part of the first stage test fixture and the second stage test fixture is provided with a sealing gasket. Sealing gaskets are arranged at the flange connection positions, so that sealing connection is formed between the parts of the first-stage test tool and the second-stage test tool through the flanges and the sealing gaskets, and cooling water leakage is avoided.
According to some embodiments of the application, the water inlet cylinder 13, the cylinder 11 and the bottom cylinder 7 of the first stage test fixture are provided with pressure guiding pipes 8 on the side surfaces, and the inlet pipe 2 of the second stage test fixture is provided with pressure guiding pipes 8 on the side surfaces. It should be noted that, one end of each pressure guiding tube 8 at the above position is communicated with the corresponding inner cavity of the pipeline, and the other end is connected to the pressure difference measuring system through a hose or a stainless steel tube, so as to obtain pressure difference data inside the tool during the test.
According to some embodiments of the present application, the three pressure guiding pipes 8 installed on the water inlet cylinder 13, the cylinder 11, the bottom cylinder 7 and the inlet pipe 2 are grouped, and all the pressure guiding pipes 8 are installed at the same axial height and are uniformly distributed. By arranging the pressure guiding pipes 8 on the water inlet cylinder 13, the cylinder 11, the bottom cylinder 7 and the inlet pipe 2 according to the requirements, the parts can be subjected to multipoint pressure measurement along the circumferential direction, so that the accuracy of pressure measurement data is ensured.
According to some embodiments of the application, the measuring point of the pressure guiding pipe 8 on the inlet pipe 2 is arranged at 500-650 mm from the central line of the upper cylinder body 1, the measuring point of the pressure guiding pipe 8 on the water inlet cylinder 13 is arranged at 400-500 mm from the upper end of the upper joint 12, the measuring point of the pressure guiding pipe 8 on the bottom cylinder body 7 is arranged at 450-550 mm from the lower end of the grid plate assembly 6, and the measuring point of the pressure guiding pipe 8 on the cylinder body 11 is arranged at 300-350 mm from the upper end of the grid plate assembly 6. The specific arrangement positions of the water inlet cylinder 13, the cylinder 11, the bottom cylinder 7 and the pressure guiding pipe 8 on the inlet pipe 2 are measuring point positions determined according to the measurement requirements of pressure differences of different areas of the tool in the test process.
According to some embodiments of the present application, the grid plate assembly 6 is internally provided with a stepped hole, the inlet is provided with a cone angle structure, and a plurality of groups of sealing grooves are machined, and an O-shaped sealing gasket 15 and a square sealing gasket 16 are installed in the sealing grooves. By providing the above two kinds of sealing gaskets in the sealing groove, the sealing gasket is mainly used for sealing the gap between the grid plate assembly 6 and the lower joint 10.
In the first stage test, it is necessary to install an O-ring 15 and a square ring 16 in the seal groove inside the grid plate assembly 6 in order to seal the gap between the inner wall of the grid plate assembly 6 and the outer wall of the lower joint 10, thereby ensuring that the test cooling water does not flow from the gap but flows entirely through the lower joint. In the second stage test, the O-ring 15 and square ring 16 mounted in the seal groove inside the grid plate assembly 6 need to be removed.
According to some embodiments of the present application, the included angle of the inlet taper hole of the grid plate assembly 6 is 60 ° to 65 °, the number of the seal grooves is 2 to 3 groups, the material of the O-shaped sealing gasket 15 is rubber, and the material of the square sealing gasket 16 is polyethylene.
By providing the conical hole at the angle above at the inlet of the grid plate assembly 6, the conical hole can guide the lower joint 10 into the inner hole of the grid plate assembly 6 smoothly when the first stage test fixture is assembled. And simultaneously, when the second-stage test is carried out, the taper hole can guide the lower part of the irradiation test device so as to be smoothly inserted into the grid plate assembly 6.
The square sealing gasket 16 is made of polyethylene by using the O-shaped sealing gasket 15 made of rubber, and the rubber gasket can not be plugged into a gap between the inner hole wall of the grid plate assembly 6 and the outer wall of the lower joint 10 due to high hardness of the polyethylene, so that the rubber gasket can realize the sealing of the gap.
According to some embodiments of the present application, the lower joint 10 may be inserted into the grid plate assembly 6, a gap of 0.5 mm-1 mm is left between the inner wall of the grid plate assembly 6 and the outer wall of the lower joint 10, and the O-shaped sealing gasket 15 and the square sealing gasket 16 are in interference fit with the outer wall of the lower joint 10.
By limiting the value of the gap between the inner wall of the grid plate assembly 6 and the outer wall of the lower joint 10 to the above value, a positioning effect can be created when the lower joint 10 is inserted into the inner hole of the grid plate assembly 6, and the above gap can be sealed well by making the O-ring 15 and the square ring 16 have an interference fit with the outer wall of the lower joint 10.
According to some embodiments of the application, the sealing groove is located at a position 20 mm-30 mm away from the outlet of the grid plate assembly 6. By providing the seal groove at the above-mentioned location of the inner hole of the grid plate assembly 6, the O-ring 15 and the square-ring 16 are easily installed in the first stage test, and the O-ring 15 and the square-ring 16 are easily removed in the second stage test.
For a better understanding of the present application, a detailed explanation of the specific operation of the first stage test fixture and the second stage test fixture will be provided below.
Example 1:
The first-stage test fixture comprises a grid plate assembly 6, a bottom cylinder 7, a pressure guiding pipe 8, a taper pipe 9, a lower joint 10, a cylinder 11, an upper joint 12, a water inlet cylinder 13, a water inlet reducing cylinder 14, an O-shaped sealing gasket 15 and a square sealing gasket 16, wherein the first-stage test is mainly used for screening throttling components and the like in an irradiation test device.
Firstly, a test assembly is arranged in a cylinder 11 and fixed by a supporting assembly, and then a lower joint 10 is connected with the lower end of the cylinder 11 by a screw, flanges at two ends of the cylinder 11 are respectively connected with a flange at the lower end of a water inlet cylinder 13 and a flange at the upper end of a grid plate assembly 6, and a flange at the lower end of the grid plate assembly 6 is connected with a flange at the upper end of a bottom cylinder 7, so that the assembly of the whole first-stage test fixture is realized;
Then, the water inlet reducing cylinder 14 and the taper pipe 9 in the first-stage test fixture are respectively connected into a test loop through flanges, and meanwhile, the water inlet cylinder 13, the cylinder 11 and the pressure guiding pipe 8 arranged on the bottom cylinder 7 are connected into a differential pressure measurement system;
and then, opening a test loop, circulating deionized water through the inside of the first-stage test tool, detecting the pressure at each position, and comparing every two measuring points to obtain the pressure difference of different areas.
Through the method, different throttling components are replaced for testing, and the optimal throttling component is screened.
Example 2:
The second-stage test fixture comprises an upper cylinder 1, an inlet pipe 2, a cone section 3, a middle cylinder 4, a lower cylinder 5, a grid plate assembly 6, a bottom cylinder 7, a pressure guiding pipe 8 and a cone pipe 9, and is mainly used for verifying the performance of the irradiation test device.
Firstly, respectively connecting flanges at two ends of a lower cylinder 5 with a flange at the lower end of a middle cylinder 4 and a flange at the upper end of a grid plate assembly 6, connecting the flange at the lower end of the grid plate assembly 6 with a flange at the upper end of a bottom cylinder 7, realizing the assembly of the whole second-stage test tool, and vertically fixing the second-stage test tool after the assembly is completed;
then, the irradiation test device is axially inserted into the second-stage test fixture, the lower joint of the irradiation test device is inserted into the grid plate assembly 6, the O-shaped sealing gasket 15 and the square sealing gasket 16 in the grid plate assembly 6 are required to be removed before installation, and the flange of the irradiation test device is connected with the flange at the upper end of the upper cylinder body 1, so that the whole irradiation test device is sealed in the second-stage test fixture. The inlet pipe 2 and the taper pipe 9 in the second stage test fixture are respectively connected into a test loop through flanges, and meanwhile, the bottom cylinder 7 and the pressure guiding pipe 8 arranged on the inlet pipe 2 are connected into a differential pressure measurement system;
And then, opening a loop to enable deionized water to circulate through the inside of the second-stage test tool, detecting the pressure at each position, comparing every two measuring points to obtain the pressure difference of different areas, and simultaneously adjusting the irradiation test device to change the water flow entering the irradiation test device.
By the method, the relationship between the pressure difference and the flow in the irradiation test device is established, so that the rationality of the irradiation test device design is verified.
Compared with the test tool in the prior art, the hydraulic characteristic verification test tool designed in the embodiment of the application has at least the following advantages:
1. The tool can be used for verifying the rationality of the design of the irradiation test device, and simultaneously can meet the requirements of disassembling and replacing components and adjusting a test scheme at any time in the test process, and the acquisition of test data is not influenced;
2. the tool has small volume, better sealing performance and stronger adaptability, and can replace the existing test tool with large volume, complex structure and high processing requirement;
3. The tool is provided with a plurality of pressure measuring points, so that the pressure difference measurement on different positions of the test device and different internal structural members can be realized, and the design rationality of the feedback device can be well improved;
4. The tool divides the whole hydraulic characteristic test into two stages, adopts the first-stage test tool for the hydraulic test requiring frequent replacement of the internal components, can utilize the characteristics of simple structure, small weight and convenient operation, rapidly completes the test, and can evaluate the performance of the irradiation test device by adopting the second-stage test tool after the screening of the basic components is completed.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411200228.5A CN119147216A (en) | 2024-08-29 | 2024-08-29 | Hydraulic characteristic verification test tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411200228.5A CN119147216A (en) | 2024-08-29 | 2024-08-29 | Hydraulic characteristic verification test tool |
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| Publication Number | Publication Date |
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| CN119147216A true CN119147216A (en) | 2024-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411200228.5A Pending CN119147216A (en) | 2024-08-29 | 2024-08-29 | Hydraulic characteristic verification test tool |
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| CN (1) | CN119147216A (en) |
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2024
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