CN117388071B - Flexible expansion joint pull-out force test device for heat exchange tube and tube plate - Google Patents
Flexible expansion joint pull-out force test device for heat exchange tube and tube plate Download PDFInfo
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- CN117388071B CN117388071B CN202311689047.9A CN202311689047A CN117388071B CN 117388071 B CN117388071 B CN 117388071B CN 202311689047 A CN202311689047 A CN 202311689047A CN 117388071 B CN117388071 B CN 117388071B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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Abstract
The invention relates to the technical field of tools, in particular to a flexible expansion joint pull-out force test device for a heat exchange tube and a tube plate, which comprises a clamping and fixing tool; pulling subassembly, locating lever, dwang, actuating lever and roof pressure post, the dwang with the locating lever rotates to be connected, the actuating lever with locating lever normal running fit, roof pressure post one end with actuating lever screw thread fit the roof pressure post other end with dwang sliding fit, the dwang with the fixed frock cooperation of centre gripping. The device is simple and convenient to fix the heat exchange tube to be tested, can be used for quickly centering when the test is performed, basically does not need to adjust the position of a test piece, and effectively protects the pipe fitting from damage.
Description
Technical Field
The invention relates to the technical field of tools, in particular to a flexible expansion joint pull-out force test device for a heat exchange tube and a tube plate.
Background
The heat exchanger is widely applied to the fields of chemical industry, energy, electric power, aerospace and the like, when the heat exchanger is manufactured, the heat exchange tubes and the tube plates are connected in a flexible expansion joint mode, a pull-out force test is often required to be carried out on the heat exchange tubes according to requirements, an existing pull-out force test method is to verify expansion joint parameters by adopting a stretcher, and one ends of a plurality of processed heat exchange tubes are expanded and connected on the tube plates to form test pieces by different expansion joint parameters; fixing the tube plate, fixing the pull head of the stretcher and the end part of one heat exchange tube to be tested, and upward stretching the stretcher by using a stretching force standard required by a process to verify whether the expansion joint parameters are qualified or not.
However, the method needs to frequently perform centering fixation and adjustment of the position of the test piece on the heat exchange tube to be tested, is complex in operation and is easy to damage the heat exchange tube.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems occurring in the prior art.
Therefore, the invention aims to solve the technical problems that the prior method needs to frequently perform centering fixing and test piece position adjustment on the heat exchange tube to be tested, has complex operation and is easy to damage the heat exchange tube.
In order to solve the technical problems, the invention provides the following technical scheme: a flexible expansion joint pull-out force test device for a heat exchange tube and a tube plate comprises a clamping and fixing tool; pulling subassembly, locating lever, dwang, actuating lever and roof pressure post, the dwang with the locating lever rotates to be connected, the actuating lever with locating lever normal running fit, roof pressure post one end with actuating lever screw thread fit the roof pressure post other end with dwang sliding fit, the dwang with the fixed frock cooperation of centre gripping.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the clamping and fixing tool comprises a pipe fitting placing groove, a fixing bolt hole and a positioning bolt hole, wherein the pipe fitting placing groove is formed in the upper end of the clamping and fixing tool, the groove is formed in the inner wall of the pipe fitting placing groove in a penetrating mode, the fixing bolt hole is formed in the lower end of the clamping and fixing tool in a penetrating mode, the positioning bolt hole is formed in the side face of the clamping and fixing tool and communicated with the pipe fitting placing groove, and one end of a rotating rod penetrates through the groove and is arranged in the pipe fitting placing groove.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the locating rod comprises a locating disc, a disc sliding groove, a connecting disc, a handle block, a motor groove and a driving motor, wherein the locating disc is arranged at one end of the locating rod, the disc sliding groove is arranged on the locating disc, a plurality of disc sliding grooves are formed in an equidistant mode, the connecting disc is arranged at the other end of the locating rod, the handle block is arranged on the side face of the connecting disc, the motor groove is formed in the handle block, and the driving motor is arranged in the motor groove.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the connecting disc comprises a main shaft hole, a gear connecting groove, a disc rotating rod and a limiting column, wherein the main shaft hole is arranged on the side surface of the connecting disc in a penetrating way, the gear connecting groove and the disc rotating rod are arranged on the other side surface of the connecting disc, and the limiting column is connected with the disc rotating rod in a rotating way;
the limiting post is characterized in that a limiting bump is arranged on the circumferential surface of the limiting post, and a rotary bolt block is arranged on the side face of the limiting post.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the side surface of the driving motor is provided with a first rotating shaft, and a first rotating lug is arranged on the first rotating shaft;
the side face of the first rotating shaft is provided with a second rotating shaft, and the circumferential surface of the second rotating shaft is provided with a second lug.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the rotating rod comprises a driving disc, an arc-shaped groove, a sliding block and a rotating gear, the driving disc is arranged at one end of the rotating rod, the arc-shaped groove is penetrated through and arranged on the side face of the driving disc, one end of the sliding block is inserted into the arc-shaped groove, the other end of the sliding block is arranged in the disc sliding groove, the rotating gear is arranged at the other end of the rotating rod, and the limiting column is matched with the rotating gear;
the side of the rotating gear is provided with a rotating through groove, the rotating through groove penetrates through the rotating rod, the positioning rod penetrates through the rotating through groove, and the rotating gear is located on the side of the connecting disc.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the driving rod comprises a screw rod and a driving gear, the screw rod is rotationally connected with the driving gear, the driving gear is rotationally matched with the gear connecting groove, and the driving gear is meshed with the rotating gear.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the side of the driving gear is provided with a gear through groove and a first shielding groove, a first shielding block is arranged in the first shielding groove and is in rotary connection with the inner wall of the first shielding groove, one end of the first shielding block is arranged in the gear through groove, the other end of the first shielding block is arranged in the first shielding groove, the gear through groove penetrates through the driving gear, a first rotating shaft is arranged in the gear through groove, and a first rotating lug is matched with the first shielding block.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the screw rod side is provided with screw rod drive groove and second and shelters from the groove, the second shelters from the inslot and is provided with the second and shelters from the dog, the second shelter from the dog with the second shelters from the groove rotation and is connected, the second axis of rotation is arranged in the screw rod drive groove, the second lug with the second shelters from the cooperation of piece.
As a preferable scheme of the flexible expansion joint pull-out force test device for the heat exchange tube and the tube plate, the invention comprises the following steps: the side of the jacking column is provided with a plurality of extrusion columns.
The invention has the beneficial effects that: the device is simple and convenient to fix the heat exchange tube to be tested, can be used for quickly centering when the test is performed, basically does not need to adjust the position of a test piece, and effectively protects the pipe fitting from damage.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
FIG. 1 is a schematic diagram of an assembly structure of a flexible expansion joint pull-out force test device for a heat exchange tube and a tube plate according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a clamping fixture in a test device for testing flexible expansion joint pull-out force of a heat exchange tube and a tube plate according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an assembly structure of a pulling assembly of a device for testing a flexible expansion joint pull-out force of a heat exchange tube and a tube plate according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating connection of a pulling assembly in a device for testing a flexible expansion joint pull-out force of a heat exchange tube and a tube sheet according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a positioning rod and a rotating rod in a device for testing flexible expansion joint pull-out force of a heat exchange tube and a tube plate according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a connection structure of a positioning rod and a driving rod in a test device for flexible expansion joint pull-out force of a heat exchange tube and a tube plate according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a connection structure of a driving rod in a flexible expansion joint pull-out force test device for a heat exchange tube and a tube plate according to an embodiment of the present invention.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
In the following detailed description of the embodiments of the present invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration only, and in which is shown by way of illustration only, and in which the scope of the invention is not limited for ease of illustration. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" 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.
Example 1
Referring to fig. 1 and 2, the embodiment provides a device for testing flexible expansion joint pull-out force of a heat exchange tube and a tube plate, which comprises a clamping and fixing tool 100 and a pulling assembly 200.
Pulling assembly 200, locating lever 201, dwang 202, actuating lever 203 and roof pressure post 204, dwang 202 and locating lever 201 rotate to be connected, actuating lever 203 and locating lever 201 normal running fit, roof pressure post 204 one end and actuating lever 203 screw thread fit, roof pressure post 204 other end and dwang 202 sliding fit, dwang 202 and the fixed frock 100 of centre gripping cooperation.
The clamping and fixing tool 100 comprises a pipe fitting placing groove 101, a groove 102, a fixing bolt hole 103 and a positioning bolt hole 104, the pipe fitting placing groove 101 is formed in the upper end of the clamping and fixing tool 100, the groove 102 is arranged on the inner wall of the pipe fitting placing groove 101 in a penetrating mode, the fixing bolt hole 103 is arranged at the lower end of the clamping and fixing tool 100 in a penetrating mode, the positioning bolt hole 104 is formed in the side face of the clamping and fixing tool 100 and is communicated with the pipe fitting placing groove 101, one end of a rotating rod 202 penetrates through the groove 102 and is arranged in the pipe fitting placing groove 101, and a plurality of fixing bolt holes 103 and the positioning bolt holes 104 are formed in the rotating rod.
During installation, the fixture 100 is fixed through the cooperation of the fixing bolt holes 103 and bolts, and then the heat exchange tube for test is connected with the tube plate in a flexible expansion mode, and specific expansion parameters are set according to requirements.
The heat exchange tube and the tube plate for test are placed in the tube fitting placing groove 101, and then are matched with the positioning bolt holes 104 through bolts, so that the test tube plate is clamped and fixed.
Further, a rubber washer is arranged at one end of the bolt matched with the positioning bolt hole 104, so that the surface of the tube plate is not damaged when the bolt contacts with the test tube plate, and friction between the bolt and the test tube plate is increased.
Example 2
Referring to fig. 1 to 7, in a second embodiment of the present invention, based on the previous embodiment, the present embodiment provides an implementation manner of a flexible expansion joint pull-out force test device for a heat exchange tube and a tube plate.
The positioning rod 201 comprises a positioning plate 201a, a disc sliding groove 201b, a connecting disc 201c, a handle block 201d, a motor groove 201e and a driving motor 201f, wherein the positioning plate 201a is arranged at one end of the positioning rod 201, the disc sliding groove 201b is arranged on the positioning plate 201a, a plurality of disc sliding grooves 201b are equidistantly arranged, the connecting disc 201c is arranged at the other end of the positioning rod 201, the handle block 201d is arranged on the side face of the connecting disc 201c, the motor groove 201e is arranged on the handle block 201d, the driving motor 201f is arranged in the motor groove 201e, and the driving motor 201f is in sliding clamping connection with the motor groove 201 e.
The driving motor 201f and the motor groove 201e are in sliding connection in such a way that a spring is arranged on the driving motor 201f and fixedly connected with the inside of the motor groove 201e, and a circular column is arranged at the lower end and is spliced with the handle block 201 d.
The driving motor 201f is a torque control motor in the prior art, and can input a torque with a specific value according to the requirement, so as to meet the working requirement.
The connecting disc 201c comprises a main shaft hole 201c-1, a gear connecting groove 201c-2, a disc rotating rod 201c-3 and a limiting column 201c-4, the main shaft hole 201c-1 is arranged on the side surface of the connecting disc 201c in a penetrating way, the gear connecting groove 201c-2 and the disc rotating rod 201c-3 are arranged on the other side surface of the connecting disc 201c, and the limiting column 201c-4 is connected with the disc rotating rod 201c-3 in a rotating way; the limiting post 201c-4 is provided with a limiting bump 201c-41 on the circumferential surface, and the side surface of the limiting post 201c-4 is provided with a rotary bolt block 201c-42.
The spindle hole 201c-1 and the gear connecting groove 201c-2 are coaxially provided.
The torsion spring is arranged at the rotation connection position of the limit post 201c-4 and the disc rotating rod 201c-3, so that the limit post 201c-4 is in a vertically upward state under the condition that no external force is applied to the limit bump 201c-41, and the position of the limit bump 201c-41 is controlled by rotating the rotating bolt block 201c-42.
The side surface of the driving motor 201f is provided with a first rotating shaft 201f-1, the first rotating shaft 201f-1 is provided with a first rotating lug 201f-11, and the first rotating lug 201f-11 is provided with a plurality of first rotating lugs at equal intervals along the circumferential surface of the first rotating shaft 201 f-1.
The side surface of the first rotating shaft 201f-1 is provided with a second rotating shaft 201f-2, the circumferential surface of the second rotating shaft 201f-2 is provided with a second protruding block 201f-21, and a plurality of second protruding blocks 201f-21 are equidistantly arranged along the circumferential surface of the second rotating shaft 201 f-2.
The rotating rod 202 comprises a driving disc 202a, an arc-shaped groove 202b, a sliding block 202c and a rotating gear 202d, wherein the driving disc 202a is arranged at one end of the rotating rod 202, the arc-shaped groove 202b is arranged on the side surface of the driving disc 202a in a penetrating mode, a plurality of arc-shaped grooves 202b are formed in an equidistant mode, one end of the sliding block 202c is inserted into the arc-shaped groove 202b, the other end of the sliding block 202c is arranged in the disc chute 201b, the rotating gear 202d is arranged at the other end of the rotating rod 202, and the limiting column 201c-4 is matched with the rotating gear 202d in a mode that the limiting protruding blocks 201c-41 are clamped with the rotating gear 202 d.
The sliding block 202c is shown in fig. 4, one end of the sliding block 202c is provided with an arc-shaped block, and a rubber gasket is sleeved on the arc-shaped block to increase friction and avoid damaging the pipe fitting.
The side of the rotating gear 202d is provided with a rotating through groove 202e, the rotating through groove 202e penetrates through the whole rotating rod 202, the positioning rod 201 penetrates through the rotating through groove 202e, the rotating gear 202d is positioned on the side of the connecting disc 201c, the positioning disc 201a is positioned at the lower end of the driving disc 202a, and the rotating gear 202d is in rotating connection with the positioning rod 201.
The driving lever 203 includes a screw 203a and a driving gear 203b, the screw 203a is rotatably connected to the driving gear 203b, the driving gear 203b is rotatably fitted to the gear connecting groove 201c-2, and the driving gear 203b is engaged with the rotating gear 202 d.
The side of the driving gear 203b is provided with a gear through groove 203b-1 and a first shielding groove 203b-2, the gear through groove 203b-1 is communicated with the first shielding groove 203b-2, the first shielding groove 203b-2 is provided with a plurality of first shielding blocks 203b-21 at equal intervals, the first shielding blocks 203b-21 are rotatably connected with the inner wall of the first shielding groove 203b-2, one end of each first shielding block 203b-21 is arranged in the gear through groove 203b-1, the other end of each first shielding block 203b-21 is arranged in the first shielding groove 203b-2, torsion springs are arranged at the rotary connection positions of the first shielding blocks 203b-21 and the first shielding groove 203b-2, the first shielding blocks 203b-21 are in a vertical state under the condition of not receiving external force, and part of the first shielding blocks 203b-21 are arranged in the gear through groove 203b-1 as shown in fig. 7.
The gear through groove 203b-1 penetrates through the driving gear 203b, the first rotating shaft 201f-1 is arranged in the gear through groove 203b-1, and the first rotating protruding block 201f-11 is in extrusion fit with the first shielding block 203 b-21.
The side of the screw rod 203a is provided with a screw rod driving groove 203a-1 and a second shielding groove 203a-2, the screw rod driving groove 203a-1 is communicated with the second shielding groove 203a-2, a plurality of second shielding grooves 203a-2 are equidistantly arranged, a second shielding block 203a-21 is arranged in the second shielding groove 203a-2, the second shielding block 203a-21 is rotationally connected with the second shielding groove 203a-2, a torsion spring is arranged at the rotationally connected position of the second shielding block 203a-21 and the second shielding groove 203a-2, the second shielding block 203a-21 is in a vertical state under the condition of not receiving external force, and part of the second shielding block 203a-21 is arranged in the screw rod driving groove 203a-1 as shown in fig. 7.
The second rotation shaft 201f-2 is disposed in the screw driving groove 203a-1, and the second projection 201f-21 is press-fitted with the second shielding block 203 a-21.
The pressing column 204 is provided with a plurality of pressing columns 204a on the side surface thereof, and the pressing columns 204a are provided with a plurality of pressing columns.
The further positioning rod 201 is further provided with a housing which engages with the connecting disc 201 c.
The pulling assembly 200 as a whole is shown in fig. 3 when not in use.
It should be noted that, in the normal state, the first rotation shaft 201f-1 and the second rotation shaft 201f-2 are not completely disposed in the gear through groove 203b-1 and the screw driving groove 203a-1 due to the action of the spring thereon, the first rotation projection 201f-11 is not in contact with the first shielding block 203b-21, and the second projection 201f-21 is not in contact with the second shielding block 203 a-21.
When the heat exchange tube and tube plate to be tested are fixed through the clamping and fixing tool 100, the rotating rod 202 is arranged in the groove 102, the positioning disc 201a and the driving disc 202a are arranged in the heat exchange tube, torque values required by the test are input, the driving motor 201f is pressed to a position contacted with the handle block 201d, then the driving motor 201f is started, at the moment, the first rotating shaft 201f-1 and the second rotating shaft 201f-2 rotate anticlockwise, the first rotating lug 201f-11 on the first rotating shaft 201f-1 contacts with the first shielding block 203b-21 in the gear through groove 203b-1, the first shielding block 203b-21 is abutted with the first shielding groove 203b-2 and cannot rotate, the driving gear 203b is driven to rotate anticlockwise, the rotating gear 202d meshed with the driving gear 203b rotates clockwise, the whole rotating rod 202 rotates, the driving disc 202a pushes the sliding block 202c to move outwards in the disc chute 201b through the arc groove 202b in the rotating process, and the three sliding blocks 202c stretch outwards gradually, and the three sliding blocks 202c are tightly attached to the inner wall of the heat exchange tube after the heat exchange tube is tightly closed after a certain distance is reached.
In the process of rotating the first rotating shaft 201f-1 and the second rotating shaft 201f-2 counterclockwise, the second protrusion 201f-21 on the second rotating shaft 201f-2 contacts the second shielding block 203a-21 in the screw driving groove 203a-1, so as to push the second shielding block 203a-21 to rotate in the second shielding groove 203a-2, and not to drive the screw 203a to rotate.
It should be noted that, when the rotation gear 202d rotates clockwise, the rotation gear 202d pushes the limit bump 201c-41 on the limit post 201c-4, so that the whole limit post 201c-4 rotates, but when the rotation gear 202d does not rotate clockwise, the limit bump 201c-41 is engaged with the rotation gear 202d, so that the rotation gear 202d cannot rotate counterclockwise.
Then, the driving motor 201f is turned on again to rotate clockwise, the first rotating protruding block 201f-11 on the first rotating shaft 201f-1 contacts with the first shielding block 203b-21 in the gear through groove 203b-1, so that the first shielding block 203b-21 is pushed to rotate in the first shielding groove 203b-2 and the gear through groove 203b-1, and the driving gear 203b is not pushed to rotate.
The second bump 201f-21 on the second rotating shaft 201f-2 contacts with the second shielding block 203a-21 in the screw rod driving groove 203a-1, the second shielding block 203a-21 abuts against the inner wall of the second shielding groove 203a-2, so that the screw rod 203a rotates along with the second rotating shaft 201f-2, the top pressing column 204 is in sliding fit with the rotating rod 202 because the upper end is in threaded connection with the screw rod 203a and the lower end is sleeved on the rotating rod 202, the top pressing column 204 moves forward at the moment, the pressing column 204a contacts with the clamping fixture 100 after moving to a certain position, when the driving motor 201f continues to rotate clockwise, the pressing column 204a pushes the clamping fixture 100, and the sliding block 202c tightly attached to the inside of the heat exchange tube pulls the heat exchange tube to move, so that a separation action occurs between the heat exchange tube and the tube plate because the heat exchange tube plate is fixed by the clamping fixture 100, the heat exchange tube and the tube plate flexible expansion and detachment force test is performed through the steps, and the value of the relevant pulling force can be obtained according to the value input by the driving motor 201 f.
When the screw is detached, the driving motor 201f is not pressed, and the rotating lever 202 and the screw 203a may be manually rotated to reset.
The device is simple and convenient to fix the heat exchange tube to be tested, can be quickly centered when the test is performed, basically does not need to adjust the position of a test piece, effectively protects the tube fitting, avoids damage, and has simple and easy operation in the experimental process.
And this device can also directly be applied to the heat exchanger that has already connected, place locating plate 201a and drive disc 202a in the heat exchange tube through above-mentioned mode with the heat exchange tube inner wall fixed, then start driving motor 201f and rotate clockwise, extrude through extrusion post 204a and tube sheet, and then detect whether the steadiness between heat exchange tube and the tube sheet is up to standard.
It is important to note that the construction and arrangement of the present application as shown in a variety of different exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (6)
1. A heat exchange tube and tube sheet flexible expansion joint pull-out force test device is characterized in that: comprising the steps of (a) a step of,
clamping and fixing a tool (100);
the clamping fixture comprises a pulling assembly (200), a positioning rod (201), a rotating rod (202), a driving rod (203) and a jacking column (204), wherein the rotating rod (202) is rotationally connected with the positioning rod (201), the driving rod (203) is in rotating fit with the positioning rod (201), one end of the jacking column (204) is in threaded fit with the driving rod (203), the other end of the jacking column (204) is in sliding fit with the rotating rod (202), and the rotating rod (202) is in fit with the clamping fixture (100);
the clamping and fixing tool (100) comprises a pipe fitting placing groove (101), a groove (102), a fixing bolt hole (103) and a positioning bolt hole (104), wherein the pipe fitting placing groove (101) is formed in the upper end of the clamping and fixing tool (100), the groove (102) is formed in the inner wall of the pipe fitting placing groove (101) in a penetrating mode, the fixing bolt hole (103) is formed in the lower end of the clamping and fixing tool (100) in a penetrating mode, the positioning bolt hole (104) is formed in the side face of the clamping and fixing tool (100) and is communicated with the pipe fitting placing groove (101), and one end of a rotating rod (202) penetrates through the groove (102) to be arranged in the pipe fitting placing groove (101);
the positioning rod (201) comprises a positioning disc (201 a), a disc sliding groove (201 b), a connecting disc (201 c), a handle block (201 d), a motor groove (201 e) and a driving motor (201 f), wherein the positioning disc (201 a) is arranged at one end of the positioning rod (201), the disc sliding groove (201 b) is arranged on the positioning disc (201 a), a plurality of disc sliding grooves (201 b) are equidistantly arranged, the connecting disc (201 c) is arranged at the other end of the positioning rod (201), the handle block (201 d) is arranged on the side face of the connecting disc (201 c), the motor groove (201 e) is arranged on the handle block (201 d), and the driving motor (201 f) is arranged in the motor groove (201 e);
the rotating rod (202) comprises a driving disc (202 a), an arc-shaped groove (202 b), a sliding block (202 c) and a rotating gear (202 d), wherein the driving disc (202 a) is arranged at one end of the rotating rod (202), the arc-shaped groove (202 b) penetrates through the side surface of the driving disc (202 a), one end of the sliding block (202 c) is inserted into the arc-shaped groove (202 b), the other end of the sliding block (202 c) is arranged in the disc sliding groove (201 b), and the rotating gear (202 d) is arranged at the other end of the rotating rod (202);
the side surface of the rotating gear (202 d) is provided with a rotating through groove (202 e), the rotating through groove (202 e) penetrates through the rotating rod (202), the positioning rod (201) penetrates through the rotating through groove (202 e), and the rotating gear (202 d) is positioned on the side surface of the connecting disc (201 c);
the driving rod (203) comprises a screw rod (203 a) and a driving gear (203 b), the screw rod (203 a) is rotationally connected with the driving gear (203 b), the driving gear (203 b) is rotationally matched with the gear connecting groove (201 c-2), and the driving gear (203 b) is meshed with the rotating gear (202 d).
2. The heat exchange tube and tube sheet flexible expansion joint pull-out force test device according to claim 1, wherein: the connecting disc (201 c) comprises a main shaft hole (201 c-1), a gear connecting groove (201 c-2), a disc rotating rod (201 c-3) and a limiting column (201 c-4), the main shaft hole (201 c-1) is arranged on the side face of the connecting disc (201 c) in a penetrating mode, the gear connecting groove (201 c-2) and the disc rotating rod (201 c-3) are arranged on the other side face of the connecting disc (201 c), and the limiting column (201 c-4) is connected with the disc rotating rod (201 c-3) in a rotating mode;
a limiting bump (201 c-41) is arranged on the circumferential surface of the limiting column (201 c-4), and a rotary bolt block (201 c-42) is arranged on the side surface of the limiting column (201 c-4);
the limit post (201 c-4) is matched with the rotating gear (202 d).
3. The heat exchange tube and tube sheet flexible expansion joint pull-out force test device according to claim 2, wherein: a first rotating shaft (201 f-1) is arranged on the side surface of the driving motor (201 f), and a first rotating lug (201 f-11) is arranged on the first rotating shaft (201 f-1);
the side surface of the first rotating shaft (201 f-1) is provided with a second rotating shaft (201 f-2), and the circumferential surface of the second rotating shaft (201 f-2) is provided with a second lug (201 f-21).
4. A heat exchange tube and tube sheet flexible expansion joint pull-out force test device according to claim 3, wherein: the side of the driving gear (203 b) is provided with a gear through groove (203 b-1) and a first shielding groove (203 b-2), a first shielding block (203 b-21) is arranged in the first shielding groove (203 b-2), the first shielding block (203 b-21) is rotationally connected with the inner wall of the first shielding groove (203 b-2), one end of the first shielding block (203 b-21) is arranged in the gear through groove (203 b-1), the other end of the first shielding block (203 b-21) is arranged in the first shielding groove (203 b-2), the gear through groove (203 b-1) penetrates through the driving gear (203 b), the first rotating shaft (201 f-1) is arranged in the gear through groove (203 b-1), and the first rotating lug (201 f-11) is matched with the first shielding block (203 b-21).
5. The heat exchange tube and tube sheet flexible expansion joint pull-out force test device according to claim 4, wherein: the screw rod (203 a) side is provided with a screw rod driving groove (203 a-1) and a second shielding groove (203 a-2), a second shielding block (203 a-21) is arranged in the second shielding groove (203 a-2), the second shielding block (203 a-21) is rotationally connected with the second shielding groove (203 a-2), a second rotating shaft (201 f-2) is arranged in the screw rod driving groove (203 a-1), and the second protruding block (201 f-21) is matched with the second shielding block (203 a-21).
6. The heat exchange tube and tube sheet flexible expansion joint pull-out force test device according to claim 5, wherein: the side face of the jacking column (204) is provided with a plurality of extrusion columns (204 a), and the extrusion columns (204 a) are provided with a plurality of extrusion columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311689047.9A CN117388071B (en) | 2023-12-11 | 2023-12-11 | Flexible expansion joint pull-out force test device for heat exchange tube and tube plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311689047.9A CN117388071B (en) | 2023-12-11 | 2023-12-11 | Flexible expansion joint pull-out force test device for heat exchange tube and tube plate |
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| Publication Number | Publication Date |
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| CN117388071A CN117388071A (en) | 2024-01-12 |
| CN117388071B true CN117388071B (en) | 2024-02-13 |
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| CN202311689047.9A Active CN117388071B (en) | 2023-12-11 | 2023-12-11 | Flexible expansion joint pull-out force test device for heat exchange tube and tube plate |
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