CN113758817B - Bellows high-temperature pressurized combined displacement fatigue test device - Google Patents

Abstract

The application provides a bellows high temperature area presses combination displacement fatigue test device relates to the fatigue test field. Corrugated pipe high temperature area is pressed and is made up displacement fatigue test device includes: the top of the bracket is provided with a supporting table, and the bottom of the bracket is provided with a workbench; the first driver is vertically arranged on the support table, and the driving end of the first driver can reciprocate along the vertical direction; the second driver is horizontally arranged on the workbench, and the driving end of the second driver can reciprocate along the horizontal direction; the high-temperature box is arranged between the workbench and the support table through a bearing part and used for accommodating a sealed corrugated pipe to be detected which is vertically placed, and a first communicating hole and a second communicating hole are respectively formed in the top and the bottom of the high-temperature box; the technical problem that the real running state of the precise corrugated pipe cannot be reflected in the prior art is effectively solved.

Description

Bellows high-temperature pressurized combined displacement fatigue test device

Technical Field

The application relates to the field of fatigue tests, in particular to a bellows high-temperature belt pressure combined displacement fatigue test device.

Background

With the continuous development of economic society of China, the attention degree of the nation on technological innovation is continuously deepened, and the strength of the national strategic development direction in promoting the localization process of various industries is increased year by year. In order to meet the complex and changeable international environment, countless foreign enterprises and even the situation of technical blockade of the national level, the domestic whole industrial chain multi-level manufactured product localization demand degree is continuously increased. Some important parts with high technological content, such as precision corrugated pipes, become one of the important links of localization in a plurality of fields, such as aerospace, medical instruments, petrochemical industry, high-end valves, metallurgy, electric power, ships, vacuum, refrigeration, nuclear power stations and other fields.

The real operation condition of the precision corrugated pipe is complex and changeable, so that the selection of the product design technical parameters and the judgment of the service life magnitude are particularly important. In the prior art, due to the restriction of the domestic prior art and equipment, in order to calculate the service life of the precision corrugated pipe, a single-channel displacement test is usually carried out in a normal-temperature and pressure mode to approximately simulate the fatigue test of the precision corrugated pipe, but the test result cannot accurately reflect the real running state of the precision corrugated pipe, and the test result is greatly different from the real situation.

Therefore, further solution to the above technical problems is needed.

Disclosure of Invention

The invention mainly aims to provide a high-temperature pressurized combined displacement fatigue test device for a corrugated pipe, which can solve the technical problems that the test result of approximately simulating the fatigue life of a precision corrugated pipe is inaccurate and the real running state of the precision corrugated pipe cannot be reflected by the conventional single-channel displacement test.

In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:

on the one hand the application provides a bellows high temperature area presses combination displacement fatigue test device, includes:

the top of the bracket is provided with a supporting table, and the bottom of the bracket is provided with a workbench;

the first driver is vertically arranged on the support table, and the driving end of the first driver can reciprocate along the vertical direction;

the second driver is horizontally arranged on the workbench, and the driving end of the second driver can reciprocate along the horizontal direction;

the high-temperature box is arranged between the workbench and the support table through a bearing part and used for accommodating a sealed corrugated pipe to be detected which is vertically placed, and a first communicating hole and a second communicating hole are respectively formed in the top and the bottom of the high-temperature box;

one end of the first connecting shaft vertically penetrates through a first communicating hole and extends into the high-temperature box to be connected with one end of the corrugated pipe to be detected, the first connecting shaft is connected with a first communicating hole in a sealing and sliding mode, and the other end of the first connecting shaft is connected with the driving end of the first driver;

one end of the second connecting shaft vertically penetrates through a second communicating hole to extend into the high-temperature box to be connected with the other end of the corrugated pipe to be detected, the second connecting shaft is connected with the second communicating hole in a sealing and sliding mode, and the other end of the second connecting shaft is connected with the driving end of the second driver;

the control device is respectively connected with the first driver and the second driver;

the control device respectively controls the driving end of the first driver and the driving end of the second driver to move for a preset distance, and records the driving times of the first driver and the second driver.

The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.

Optionally, the bellows high-temperature pressurized combined displacement fatigue test device further includes:

two displacement sensors respectively arranged on the first driver and the second driver;

the displacement sensor is connected with the control device, and the control device acquires the movement numerical values of the driving end of the first driver and the driving end of the second driver based on the displacement sensor.

Optionally, in the above corrugated pipe high-temperature pressurized combined displacement fatigue test apparatus, the bearing portion includes:

a roller and a support frame;

the roller is arranged at the bottom of the support frame;

the top of the support frame is provided with the high-temperature box.

Optionally, the bellows high-temperature pressurized combined displacement fatigue test device further includes:

the two heat preservation mechanisms are respectively arranged on the first communication hole and the second communication hole;

wherein, heat preservation mechanism includes:

the high-temperature base line sealing structure comprises a high-temperature base line sealing structure, a gland flange and a graphite packing;

one high-temperature base line sealing structure is in interference fit with one side, close to the inner surface of the high-temperature box, of the first communication hole, and the other high-temperature base line sealing structure is in interference fit with one side, close to the inner surface of the high-temperature box, of the second communication hole;

the two gland flanges are respectively connected with the outer surfaces of the high-temperature box at the first through hole and the second through hole;

the graphite packing is arranged between the high-temperature baseline sealing structure and the gland flange, and two ends of the graphite packing respectively abut against the high-temperature baseline sealing structure and the gland flange;

one end of the first connecting shaft vertically penetrates through the heat insulation mechanism located in the first connecting through hole and is connected with the heat insulation mechanism in a sliding mode, and one end of the second connecting shaft vertically penetrates through the heat insulation mechanism located in the second connecting through hole and is connected with the heat insulation mechanism in a sliding mode.

Optionally, the bellows high-temperature pressurized combined displacement fatigue test device further includes:

a pressure gauge and a detection pipeline;

the pressure gauge is connected with one end of the detection pipeline, the other end of the detection pipeline penetrates through the heat preservation mechanism and extends into one end of the corrugated pipe to be detected, and the detection pipeline is communicated with the corrugated pipe to be detected.

Optionally, in the aforementioned bellows high-temperature pressurized combined displacement fatigue test device, the detection pipeline includes:

the first connecting pipe, the first spiral pipe, the second connecting pipe and the second spiral pipe are sequentially connected in series;

the first connecting pipe is connected with the pressure gauge, one end of the first spiral pipe, far away from the first spiral pipe, penetrates through the heat preservation mechanism to extend into the corrugated pipe to be detected and is in sealed connection with one end of the corrugated pipe to be detected, the second spiral pipe is connected with the pressure gauge, and heat preservation layers are arranged on the first connecting pipe and the first spiral pipe.

Optionally, in the aforementioned bellows high-temperature pressurized combined displacement fatigue test device, the support further includes:

the guide post, the guide sleeve and the first moving platform;

two ends of the guide columns are respectively connected with the support table and the workbench, the number of the guide columns is at least two, and the guide columns are parallel to each other;

the guide sleeve is arranged on the guide post and is in sliding connection with the guide post;

the first moving platform is connected with the guide post in a sliding mode through the guide sleeve;

the upper surface of the first moving platform is connected with the driving end of the first driver, and the lower surface of the first moving platform is connected with one end, close to the first driver, of the first connecting shaft.

Optionally, the bellows high-temperature pressurized combined displacement fatigue test device further includes:

a second mobile platform and a connecting seat;

the second moving platform is arranged on the workbench and is in sliding connection with the workbench, and the upper surface of the second moving platform is connected with one end, close to the workbench, of the second connecting shaft;

the connecting seat is arranged at a position, close to the edge, of the upper surface of the second moving platform, and the connecting seat is connected with the driving end of the second driver.

Optionally, the bellows high-temperature pressurized combined displacement fatigue test device further includes:

the two pressure sensors are respectively arranged between the first driver and the first moving platform and between the second driver and the connecting seat;

the two pressure sensors are respectively connected with the control device, and the control device calculates the rigidity of the corrugated pipe to be detected according to the pressure values acquired by the two pressure sensors.

Optionally, the bellows high-temperature pressurized combined displacement fatigue test device further includes:

and the supporting mechanism is arranged on the workbench and used for supporting the cylinder body end of the second driver so as to adjust the second driver which is horizontally arranged in the vertical direction.

By means of the technical scheme, the high-temperature pressurized combined displacement fatigue test device for the corrugated pipe at least has the following advantages: the supporting table is vertically provided with the first driver, so that the driving end of the first driver can move in a reciprocating mode along the vertical direction, and the first driver can drive the to-be-detected corrugated pipe to perform axial fatigue test conveniently. A second driver is installed on the workbench in the horizontal direction, so that the driving end of the second driver can perform reciprocating motion in the horizontal direction, the second driver can conveniently drive the corrugated pipe to be detected to perform radial fatigue test, and the workbench can be used for supporting the bearing part; the bearing part is used for supporting the high-temperature box. The arrangement of the first communicating hole and the second communicating hole on the high-temperature box can facilitate the first connecting shaft and the second connecting shaft to be inserted into the high-temperature box so as to realize axial and radial reciprocating motion and facilitate fatigue test of the corrugated pipe to be detected; the driving end of the first driver can drive the corrugated pipe to be detected through the first connecting shaft, and an axial fatigue test is carried out in the high-temperature box; the driving end of the second driver can drive the bellows to be detected through the second connecting shaft, and radial fatigue test is carried out in the high-temperature box. The problem that the fatigue life of the corrugated pipe to be detected can be tested only through a single-channel displacement test in the prior art is effectively solved through the additionally arranged first driver and the second driver, the problem that the result obtained through simulation is inconsistent with the real result is caused, and secondly, the real running state of the corrugated pipe to be detected can be simulated through the additionally arranged high-temperature box, so that the obtained test result is more authentic.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a schematic view of a first view angle connection structure of a bellows high-temperature pressurized combined displacement fatigue test device;

FIG. 2 is a schematic view of a second view angle connection structure of a bellows high-temperature pressurized combined displacement fatigue testing device;

FIG. 3 is a schematic sectional view of a high-temperature box of a bellows high-temperature pressurized combined displacement fatigue test device;

FIG. 4 is a schematic sectional view showing the cylinder body of the first and second actuators of the bellows high-temperature pressurized combined displacement fatigue testing device;

FIG. 5 is a schematic structural diagram of a bearing part of a combined displacement fatigue test device for a corrugated pipe under high temperature and pressure;

FIG. 6 is a schematic structural diagram of a workbench of the combined displacement fatigue testing device for the high-temperature and pressure bellows;

FIG. 7 is a schematic diagram showing a first view structure of a second moving platform of the bellows high-temperature pressurized combined displacement fatigue testing device;

FIG. 8 is a second view structure diagram schematically illustrating a second moving platform of the bellows high-temperature pressurized combined displacement fatigue testing device;

fig. 9 schematically shows a structural schematic diagram of a supporting mechanism of a high-temperature pressurized combined displacement fatigue testing device for corrugated pipes.

The reference numerals in fig. 1-9 are:

the device comprises a support 1, a support table 101, a workbench 102, a guide post 103, a guide sleeve 104, a first mobile platform 105, a corrugated pipe 2 to be detected, a first driver 3, a second driver 4, a high-temperature box 5, a displacement sensor 6, a bearing part 7, a roller 701, a support frame 702, a first connecting shaft 8, a second connecting shaft 9, a heat preservation mechanism 10, a high-temperature baseline sealing structure 1001, a gland flange 1002, a graphite packing 1003, a pressure gauge 11, a detection pipeline 12, a first connecting pipe 1201, a first spiral pipe 1202, a second connecting pipe 1203, a second spiral pipe 1204, a second mobile platform 13, a connecting seat 14, a pressure sensor 15, a support mechanism 16, a first support structure 1601, a second support structure 1602, a first connecting hole 17 and a second communicating hole 18.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

As shown in fig. 1 to fig. 3, a bellows high-temperature pressurized combined displacement fatigue test apparatus according to an embodiment of the present invention includes: the device comprises a bracket 1, a first driver 3, a second driver 4, a high-temperature box 5, a first connecting shaft 8, a second connecting shaft 9 and a control device (not shown in the figure);

the top of the bracket 1 is provided with a support table 101, and the bottom of the bracket 1 is provided with a workbench 102;

the first driver 3 is vertically arranged on the support table 101, and the driving end of the first driver 3 can reciprocate along the vertical direction;

the second driver 4 is horizontally arranged on the workbench 102, and the driving end of the second driver 4 can reciprocate along the horizontal direction;

the high-temperature box 5 is arranged between the workbench 102 and the support table 101 through a bearing part 7 and is used for accommodating the sealed corrugated pipe 2 to be detected which is vertically placed, and the top and the bottom of the high-temperature box 5 are respectively provided with a first communicating hole 17 and a second communicating hole 18;

one end of the first connecting shaft 8 vertically penetrates through a first connecting hole 17 and extends into the high-temperature box 5 to be connected with one end of the corrugated pipe 2 to be detected, the first connecting shaft 8 is connected with the first connecting hole 17 in a sealing and sliding mode, and the other end of the first connecting shaft 8 is connected with the driving end of the first driver 3;

one end of the second connecting shaft 9 vertically penetrates through a second communicating hole 18 and extends into the high-temperature box 5 to be connected with the other end of the corrugated pipe 2 to be detected, the second connecting shaft 9 is connected with the second communicating hole 18 in a sealing and sliding mode, and the other end of the second connecting shaft 9 is connected with a driving end of the second driver 4;

are respectively connected with the first driver 3 and the second driver 4;

the control device controls the driving end of the first driver 3 and the driving end of the second driver 4 to move for a preset distance respectively, and records the driving times of the first driver 3 and the second driver 4.

Specifically, support 1 plays the whole effect that supports, and the vertical first driver 3 of installing on supporting bench 101 to the drive end of guaranteeing first driver 3 can carry out reciprocating motion along vertical direction, and the first driver 3 of being convenient for drives and waits to detect bellows 2 and carry out axial fatigue test. The support table 101 and the first driver 3 and the support 1 and the support table 101 may be detachably connected or fixedly connected, for example, by bolts or welding, and the present application is not limited thereto. The bolt can be preferentially selected for connection, the threaded hole is more convenient to machine on the device when the device is machined, the manufacturing cost is low, and the bolt is more convenient to prepare when the bolt is lost or damaged, so that better economic benefit and fixing effect are realized; the first driver 3 and the first connecting shaft 8 may be directly connected by welding or may be connected by a coupling.

The second driver 4 is installed on the workbench 102 in the horizontal direction, so as to ensure that the driving end of the second driver 4 can reciprocate in the horizontal direction, the second driver 4 can drive the bellows 2 to be detected to perform radial fatigue test conveniently, the workbench 102 and the second driver 4 can be directly connected or indirectly connected, wherein the workbench 102 is also used for supporting the support 1, the support 1 and the workbench 102 can be detachably connected or fixedly connected, for example, connected through a bolt or welded, in the application, the workbench 102 and the support 1 are preferably connected through a bolt, and when a device is machined, a threaded hole is machined on the device more conveniently, the manufacturing cost is low, when the bolt is lost or damaged, the device is more conveniently equipped, and therefore, better economic benefit and better fixing effect are achieved; the second driver 4 and the second connecting shaft 9 can be directly connected by welding or can be connected by a coupling.

The workbench 102 is fixed on the ground through anchor bolts or fixed on a platform with bearing capacity through a welding mode, and the workbench 102 can be used for supporting the bearing part 7; the bearing portion 7 is used for supporting the high-temperature tank 5. The arrangement of the first communicating hole 17 and the second communicating hole 18 on the high-temperature box 5 can facilitate the first connecting shaft 8 and the second connecting shaft 9 to be inserted into the high-temperature box 5 so as to realize axial and radial reciprocating motion and facilitate the fatigue test of the corrugated pipe 2 to be detected; the driving end of the first driver 3 can drive the bellows 2 to be detected through the first connecting shaft 8, and an axial fatigue test is carried out in the high-temperature box 5; the driving end of the second driver 4 can drive the bellows 2 to be detected through the second connecting shaft 9, and radial fatigue test is carried out in the high-temperature box 5.

The two ends of the corrugated pipe 2 to be detected are respectively provided with a flange for sealing the two ends of the corrugated pipe 2 to be detected, and the two ends can be connected through welding or bolts, and the corrugated pipe 2 to be detected and the two flanges are connected in a welding mode preferentially selected in the application, so that a better sealing effect is realized inside the corrugated pipe 2 to be detected; two flanges are connected with first connecting axle 8 and second connecting axle 9 respectively, wherein, can be connected through welding or bolt between a flange and first connecting axle 8 and another flange and the second connecting axle 9, in this application, preferentially select welded mode for use, connect it, so that the improvement waits to detect the stability of being connected between bellows 2 and first connecting axle 8 and the second connecting axle 9, when avoiding treating to detect bellows 2 and carrying out fatigue test, wait to detect the both ends of bellows 2 and take place to break away from with first connecting axle 8 and second connecting axle 9, thereby the influence waits to detect the authenticity of the detection data of bellows 2.

It should be noted that high temperature box 5 is prior art, can obtain through purchasing current product, also can obtain through the mode of customization, and it is equipped with circulating air supply system and heating system, and both cooperate each other and can heat the inside of high temperature box 5, are convenient for simulate waiting to detect the real operational environment of bellows 2, and circulating air supply system and heating system are prior art, do not give unnecessary details here. Wherein, the high temperature cabinet 5 of this application comprises two one side open-ended cavity cavitys, the opening side of two cavitys articulates mutually and constitutes high temperature cabinet 5 jointly promptly, the top and the bottom of two cavitys all set up the arc opening, after the opening side of two cavitys was laminated mutually, two arc openings at top constitute first intercommunicating pore 17, two arc openings of bottom constitute second intercommunicating pore 18, this structural design can be convenient for wait to detect bellows 2 and first connecting shaft 8 and first connecting shaft 9 and be connected the completion after, will wait to detect bellows 2 and put into the inside of high temperature cabinet 5, test it.

The control device can control the first driver 3 and the second driver 4, so that the device can simultaneously perform an axial/radial dual-channel displacement fatigue test on the corrugated pipe 2 to be detected; the control device controls the high temperature box 5 by conventional technical means, which is not described herein. The interior of the high-temperature box 5 is heated so as to simulate the real working environment of the corrugated pipe 2 to be detected; the control device may be a PLC (programmable logic controller) control system, a computer, a manual control panel, or the like, and in the present application, a PLC (programmable logic controller) control system is preferred.

The preset distance comprises a preset stretching distance and a preset compressing distance, wherein the numerical values of the preset stretching distance and the preset compressing distance can be the same or different, and can be set according to the experiment requirement; the control device respectively controls the first driver 3 and the second driver 4 to act so that the numerical value of the moving amount of the driving end of the first driver 3 and the driving end of the second driver 4 relative to the axial/radial stretching action of the bellows 2 to be detected is the same as the preset stretching distance, then the control device controls the driving ends of the first driver 3 and the second driver 4 to reset, then the control device controls the numerical value of the moving amount of the driving ends of the first driver 3 and the second driver 4 relative to the axial/radial compressing action of the bellows 2 to be detected to be the same as the preset compressing distance, finally the control device controls the driving ends of the first driver 3 and the second driver 4 to reset, and records the fatigue value of the bellows as 1.

In the technical scheme of the embodiment of the application, two ends of a corrugated pipe 2 to be detected are connected with two flanges in a welding mode so as to realize the effect of sealing the corrugated pipe 2 to be detected, so that the corrugated pipe 2 to be detected is fixed on a first connecting shaft 8 and a second connecting shaft 9, then the corrugated pipe 2 to be detected is positioned in the high-temperature box 5, a control device respectively controls a first driver 3 and a second driver 4 to act so as to enable the driving end of the first driver 3 and the driving end of the second driver 4 to have the same value of the movement amount of the axial/radial stretching action of the corrugated pipe 2 to be detected and the preset stretching distance, then the control device controls the driving ends of the first driver 3 and the second driver 4 to reset, then the control device controls the values of the movement amount of the axial/radial compressing action of the corrugated pipe 2 to be detected and the preset compressing distance to be the same as the first driver 3 and the second driver 4, finally, the control device controls the driving ends of the first driver 3 and the second driver 4 to reset, records the fatigue value of the corrugated pipe as 1, and repeats the steps until the tested fatigue value is the standard fatigue value of the corrugated pipe 2 to be tested, stops the test, opens the high-temperature box 5, observes whether the corrugated pipe 2 to be tested has cracks, and proves that the tested corrugated pipe 2 to be tested does not meet the production standard if the cracks appear; otherwise, the product is qualified. Treat the true running state of treating bellows 2 for better simulation, this application accessible controlling means controls the circulation air supply system and the heating system that high temperature box 5 was equipped with, so that circulation air supply system and heating system cooperation, heat the inside of high temperature box 5, thereby realize treating and detect bellows 2, carry out the high-pressure axle of high temperature/footpath binary channels displacement fatigue test, prop up supporting bench 101 and go up vertical installation first driver 3, can follow vertical direction and carry out reciprocating motion with the drive end of guaranteeing first driver 3, it carries out axial fatigue test to be convenient for first driver 3 drives and treats and detect bellows 2. The second driver 4 is installed on the workbench 102 in the horizontal direction, so that the driving end of the second driver 4 can perform reciprocating motion in the horizontal direction, the second driver 4 can conveniently drive the bellows 2 to be detected to perform radial fatigue test, and the workbench 102 can be used for supporting the bearing part 7; the bearing portion 7 is used for supporting the high-temperature tank 5. The arrangement of the first communicating hole 17 and the second communicating hole 18 on the high-temperature box 5 can facilitate the first connecting shaft 8 and the second connecting shaft 9 to be inserted into the high-temperature box 5 so as to realize axial and radial reciprocating motion and facilitate the fatigue test of the corrugated pipe 2 to be detected; the driving end of the first driver 3 can drive the bellows 2 to be detected through the first connecting shaft 8, and an axial fatigue test is carried out in the high-temperature box 5; the driving end of the second driver 4 can drive the bellows 2 to be detected through the second connecting shaft 9, and radial fatigue test is carried out in the high-temperature box 5. The problem that the fatigue life of the corrugated pipe 2 to be detected can be simulated and tested only through a single-channel displacement test in the prior art is effectively solved through the additionally arranged first driver 3 and the second driver 4, so that the simulated result is inconsistent with the real result is solved, and secondly, the real running state of the corrugated pipe 2 to be detected can be simulated through the additionally arranged high-temperature box 5, so that the obtained test result is more authentic.

As shown in fig. 1-2, further, only by using the standard fatigue value of the bellows 2 to be detected, the method for determining whether the bellows 2 to be detected is a qualified product is too single, the high temperature box 5 is a closed space, and an operator cannot distinguish when the bellows 2 to be detected cracks during the detection process, so that the fatigue value measured by the bellows 2 to be detected may not match the real value. Therefore, an observation window is formed in the side wall of the high-temperature box 5, white transparent glass is arranged on the observation window and is made of quartz, in the process of detecting the corrugated pipe 2 to be detected, the control device records the fatigue value of the corrugated pipe 2 to be detected, an operator can check the detection state of the corrugated pipe 2 to be detected in the high-temperature box 5 more visually through the observation window, when the operator finds that the corrugated pipe 2 to be detected has cracks in the test process, the test is stopped in time, the fatigue value displayed on the control device at the moment is recorded, the tested fatigue value is compared with the standard fatigue value of the corrugated pipe 2 to be detected, and if the tested fatigue value is more than or equal to the standard fatigue value of the corrugated pipe 2 to be detected, the corrugated pipe 2 to be detected is proved to be a qualified product; and if the measured fatigue value is smaller than the standard fatigue value of the corrugated pipe 2 to be detected, the corrugated pipe 2 to be detected is proved to be an unqualified product.

As shown in fig. 1, fig. 2, and fig. 4, according to some embodiments of the present application, optionally, the bellows high-temperature pressurized combined displacement fatigue testing apparatus further includes:

two displacement sensors 6 respectively disposed on the first driver 3 and the second driver 4; the detection ends of the two displacement sensors 6 respectively correspond to the driving end of the first driver 3 and the driving end of the second driver 4; the two displacement sensors 6 are connected with the control device, and the control device obtains the movement numerical values of the driving ends of the first driver 3 and the second driver 4 based on the two displacement sensors 6.

Specifically, the displacement sensor 6 is a conventional one, which is obtained by purchasing a conventional product, and is used to acquire the movement values of the driving end of the first driver 3 and the driving end of the second driver 4. Two displacement sensor 6 can set up respectively on first driver 3 and second driver 4's any position, as long as can detect the removal of first driver 3 and second driver 4 drive end can, and both can adopt detachable connection or fixed connection, for example through bolted connection, or the welding, in this application, preferably, embed two displacement sensor 6 respectively in first driver 3 and second driver 4's cylinder body, it all adopts the bolt to connect promptly, this structural design, can protect displacement sensor 6, avoid displacement sensor 6 to damage, when producing economic benefits, the influence waits to detect the accuracy that corrugated pipe 2 surveyed the data.

The displacement sensor 6 is connected to the control device and is respectively used for acquiring the movement values of the driving ends of the first driver 3 and the second driver 4, and the control device can ensure that the axial/radial movement amount of the driving ends of the first driver 3 and the second driver 4 is within 0.5 mm from the preset stretching distance or the preset compressing distance according to the acquired movement values of the driving ends of the first driver 3 and the second driver 4.

In the technical solution of the embodiment of the present application, the control device controls the driving ends of the first driver 3 and the second driver 4 to operate, during the operation of the driving ends of the first driver 3 and the second driver 4, the two displacement sensors 6 respectively generate signals, and feed back the signals to the control device, the control device respectively records the numerical values of the moving amounts of the first driver 3 and the second driver 4 during the moving process, that is, the numerical value of the moving amount of the stretching operation and the numerical value of the moving amount of the compressing operation, according to the obtained numerical values of the moving amounts, determines whether the preset distance is met, that is, the preset stretching distance and the preset compressing distance, the driving ends of the first driver 3 and the second driver 4 operate once, the control device performs a determination once according to the obtained numerical values of the moving amounts, if the driving end of the first driver 3, or the driving end of the second driver 4, any one of the numerical value of the moving amount of the stretching action or the numerical value of the moving amount of the compressing action and the preset stretching distance, or the preset compression is equal, the control device controls the driving end of the first driver 3 or the driving end of the second driver 4 to stop acting, waits for the driving end of the second driver 4, or the amount of movement of the driving end of the first driver 3 in the pulling motion, or the amount of movement of the compressing motion, and the preset pulling distance, or the preset compression is equal, the two synchronously act next time, the structural design can ensure that the driving end of the first driver 3 and the driving end of the second driver 4 synchronously move, the control device can conveniently record the fatigue value of the corrugated pipe 2 to be detected when the corrugated pipe 2 to be detected performs the shaft/diameter double-channel displacement fatigue test, the simulation of the real running state of the corrugated pipe 2 to be detected is realized, and the measured value is more authentic.

As shown in fig. 4, further, for better stability and safety of the improvement test, a plurality of stepped shafts are added to the driving shaft inside the cylinder bodies of the first driver 3 and the second driver 4, and through the cooperation of the added stepped shafts and the buffer sleeve, the pump drives the hydraulic oil, when the driving end is driven by the hydraulic oil to move, the flowing space of the hydraulic oil inside the cylinder body is gradually reduced, so that a better buffering and decelerating effect is realized, the buffering and decelerating of the first driver 3 and the second driver 4 when the reciprocating circulation reaches the limit position of the stroke is ensured, and further the stability and safety of the test are improved.

As shown in fig. 1, 2, and 5, according to some embodiments of the present application, the bearing part 7 further includes: the roller 701 and the support frame 702, the roller 701 is arranged at the bottom of the support frame 702; the high temperature box 5 is arranged on the top of the support frame 702.

Specifically, support frame 702 and gyro wheel 701 are prior art, its two can adopt to dismantle connection or fixed connection, for example through bolted connection, or welding, wherein, gyro wheel 701 has the effect of braking, the operator places high temperature cabinet 5 on support frame 702, promote support frame 702 and make gyro wheel 701 move on workstation 102, can push high temperature cabinet 5 into, push out in the fatigue test space, namely in support 1, be convenient for the device to detect axle/footpath binary channels displacement fatigue test of bellows 2, after support frame 702 sent high temperature cabinet 5 into the fatigue test space, accessible gyro wheel 701 is fixed support frame 702, when avoiding the device to experiment, support frame 702 drives high temperature cabinet 5 on workstation 102 and produces and rock, thereby the influence detects the authenticity that bellows 2 measured numerical value to detect.

As shown in fig. 1, fig. 2, and fig. 6, further, in order to better improve the effect of moving the support frame 702 and the roller 701 on the workbench 102, in this application, the upper surface of the workbench 102 is provided with at least two T-shaped slideways, the T-shaped slideways are parallel to each other, the bottom of the support frame 702 is provided with a T-shaped block adapted to the T-shaped slideways, and the T-shaped block is slidably connected with the T-shaped slideways.

As shown in fig. 1-3, according to some embodiments of the present application, optionally, the bellows high-temperature pressurized combined displacement fatigue test apparatus further includes:

two heat preservation mechanisms 10 respectively arranged on the first communication hole 17 and the second communication hole 18; wherein, the heat preservation mechanism 10 includes: a high-temperature baseline sealing structure 1001, a gland flange 1002 and a graphite packing 1003; one of the high temperature base line seal structures 1001 is interference-fitted to a side of the first communication hole 17 close to the inner surface of the high temperature chamber 5, and the other of the high temperature base line seal structures 1001 is interference-fitted to a side of the second communication hole 18 close to the inner surface of the high temperature chamber 5; the two gland flanges 1002 are respectively connected with the outer surfaces of the high-temperature box 5 at the first communication hole 17 and the second communication hole 18; the graphite packing 1003 is arranged between the high-temperature baseline sealing structure 1001 and the gland flange 1002, and two ends of the graphite packing 1003 respectively abut against the high-temperature baseline sealing structure 1001 and the gland flange 1002; one end of the first connecting shaft 8 vertically penetrates through the heat insulation mechanism 10 located in the first connecting through hole 17 and is connected with the heat insulation mechanism 10 in a sliding mode, and one end of the second connecting shaft 9 vertically penetrates through the heat insulation mechanism 10 located in the second connecting through hole 18 and is connected with the heat insulation mechanism 10 in a sliding mode.

Specifically, the heat preservation mechanism 10 is used for sealing the first communication hole 17 and the second communication hole 18, so that good air tightness is guaranteed in the high-temperature box 5, loss of heat in the high-temperature box 5 is reduced, the inside of the high-temperature box 5 can reach higher temperature, and a rapid heating effect is achieved, so that the device can perform high-temperature (less than 900 ℃), pressurized and axial-radial dual-channel combined displacement fatigue tests on the corrugated pipe 2 to be detected, and the technical problem that in the prior art, the calculated service life of the corrugated pipe 2 to be detected is not consistent with the real condition due to the fact that the high-temperature pressurized and axial-radial dual-channel combined displacement tests are replaced by the normal-temperature pressurized and superposed axial/radial single-channel displacement tests is effectively solved.

The heat preservation mechanism 10 is composed of a high-temperature baseline sealing structure 1001, a gland flange 1002 and a graphite packing 1003.

The two high-temperature baseline sealing structures 1001 are in interference fit with the first communicating hole 17 and the second communicating hole 18 respectively, the high-temperature baseline sealing structures 1001 are in the prior art, an outer-layer Nextel fiber braided sheath is selected, and the inner wall of the high-temperature baseline sealing structure is formed by a spring framework braided by high-temperature alloy and a Saffil heat-proof felt structure filled in the middle of the high-temperature alloy braided sheath. The elastic deformation of the sealing surface can be sufficiently adapted, the elastic deformation can be restored through resilience, the effect of protecting the brittle protective layer on the sealing surface by means of load reduction can be achieved, the abrasion resistance is good, leakage cannot be caused when the elastic deformation is in friction with a rough irregular surface, and the adhesion phenomenon cannot be caused on the surface of a rough ceramic substrate during sealing. According to the elastic deformation of high temperature baseline seal structure 1001 and through the nature of resilience reconversion, the drive end of messenger's first driver 3 and second driver 4 that can be fine, drive first connecting axle 8 and second connecting axle 9 and carry out axle/footpath binary channels displacement experiment in the inside of first communicating hole 17 and second communicating hole 18, still can realize sealed effect to the inside of high temperature box 5 in the action process, avoid first connecting axle 8 and second connecting axle 9 when moving, the inside of high temperature box 5 produces the heat loss, so that the inside temperature of high temperature box 5 can't reach experimental temperature, thereby the influence detects the tired numerical value of waiting to detect bellows 2, lead to detecting numerical value and true numerical value production deviation.

Can adopt between gland flange 1002 and the high temperature box 5 to dismantle the connection, for example through bolted connection, perhaps threaded connection, in this application, preferentially select for use the bolt to make and be connected between gland flange 1002 and the high temperature box 5 to reach detachable effect, be convenient for maintain graphite packing 1003 and high temperature baseline seal structure 1001. Two graphite packing 1003 set up respectively in the inside of the second intercommunicating pore 18 of first intercommunicating pore 17, and gland flange 1002 is used for compressing tightly graphite packing 1003 to make and support between graphite packing 1003 and high temperature baseline seal structure 1001 and the gland flange 1002, fully fill first intercommunicating pore 17 and second intercommunicating pore 18, in order to realize carrying out the sealed effect to the inside of high temperature box 5.

The graphite packing 1003 is a conventional art and is mainly formed by finely weaving various reinforced graphite wires such as reinforced fibers and metal wires (steel wires, copper wires, nickel wires, carbon fibers, pre-oxidized wires and glass yarns) as raw materials. The packing is suitable for dynamic sealing under high temperature and high pressure conditions and is a unique universal sealing packing. Through the secondary seal of graphite packing 1003, the inside gas tightness of high temperature box 5 can be improved, and the heat loss inside high temperature box 5 is reduced.

Further, for the inside temperature of better detection high temperature box 5, the top of high temperature box 5 sets up multiunit temperature measurement element, can adopt to dismantle between multiunit temperature measurement element and the high temperature box 5 and be connected or fixed connection, for example through bolted connection, perhaps welding, in this application, preferentially select for use the bolt to be connected between multiunit temperature measurement element and the high temperature box 5, because of the bolt is lost or be equipped with the convenience when damaging, has bigger economic benefits. This structural design can be convenient for the operator to survey temperature element, and when 5 inside experiments of high-temperature cabinet, even the bolt takes place not hard up or drops, also can not produce any influence to temperature element to avoid temperature element's damage, increased unnecessary cost.

Wherein, multiunit temperature measurement element is connected with controlling means, controlling means can be according to the inside temperature of 5 inside temperature-sensing boxes of signal record of multiunit temperature measurement element feedback, when the temperature is unstable in 5 high temperature-sensing boxes, the required temperature of 5 inside experiments of high temperature-sensing boxes promptly and the inside temperature of 5 high temperature-sensing boxes of multiunit temperature measurement element survey, the difference in temperature between them is stable range within 3 ℃, exceed this scope, judge unstablely, controlling means can promptly stop the experiment this moment, guarantee the reliability of test safety.

Further, for the inside condition of better observation high temperature box 5, in this application, lighting device is equipped with in high temperature box 5's inside, and it can improve the inside luminance of high temperature box 5 to the operator observes the inside experimental process that waits to detect bellows 2 of high temperature box 5 from the external world, and wherein, lighting device is connected with controlling means, and the operator of being convenient for controls it, and lighting device is prior art, and is not repeated here.

Further, in order to improve the security that sets up white transparent glass on the observation window, in this application, the observation window is furnished with water cooling system all around for carry out cooling to the glass of quartz material, avoid the glass of quartz material, because of the inside high temperature of high-temperature box 5, appear melting or explode the phenomenon of splitting, produce potential danger. The water cooling system is in the prior art, and is connected to the control device, and the control device controls the water cooling system by a conventional technical means, which is not described herein again.

As shown in fig. 1-3, according to some embodiments of the present application, optionally, the bellows high-temperature pressurized combined displacement fatigue test apparatus further includes:

a pressure gauge 11 and a detection pipeline 12; the pressure gauge 11 is connected with one end of the detection pipeline 12, the other end of the detection pipeline 12 penetrates through the heat insulation mechanism 10 and extends into one end of the corrugated pipe 2 to be detected, and the detection pipeline 12 is communicated with the corrugated pipe 2 to be detected. Specifically, manometer 11 is prior art, be connected with controlling means, it is used for detecting the inside atmospheric pressure of bellows 2 that awaits measuring, when waiting to detect bellows 2 and appearing the crack, manometer 11 will detect numerical value and feed back to controlling means, controlling means stops the experiment, and the fatigue value of bellows 2 that awaits measuring is shown, this project organization can be convenient for the device and carry out the quick response, in order to obtain accurate measuring result, avoid waiting to detect bellows 2 and appearing the crack, controlling means and operator are all not perceived, so that the experiment continues, thereby the experimental result that obtains and true experimental result appear the deviation, lead to record the inaccurate problem of experimental value appearance. The pressure gauge 11 in the application is preferably an electronic digital display point gauge, and other types or models of pressure gauges 11 can be selected according to the experimental requirements. Secondly, when the air pressure in the bellows 2 to be detected is unstable, the pressure gauge 11 feeds back the air pressure value obtained by detection to the control device, and at the moment, the control device can stop the test emergently, so that the reliability of the test safety is ensured. In addition, can adopt between manometer 11 and the detection pipeline 12 to dismantle and be connected or fixed connection, for example through bolted connection, perhaps welding, in this application, preferentially select for use the bolt to be connected between detection pipeline 12 and the manometer 11, because of the bolt is lost or be equipped with the convenience when damaging, has bigger economic benefits.

Detection pipeline 12 is used for cooperating manometer 11 to treat the inside atmospheric pressure of detection bellows 2 and detects, it can adopt detachable connection or fixed connection with waiting to detect between the bellows 2, for example through bolted connection, or weld, in this application, preferentially select welded mode to connect between detection pipeline 12 and the bellows 2 of waiting to detect, in order to realize good gas tightness, avoid detection pipeline 12 when leading atmospheric pressure to manometer 11 from the inside of waiting to detect bellows 2, the phenomenon of gas leakage appears, lead to manometer 11 to detect the atmospheric pressure value and change, make the wrong thought of controlling means wait to detect bellows 2 and appear the crack, thereby the control experiment stops, record wrong experimental data, when influencing the device is treated and is detected bellows 2 and experimented, measure the accuracy of data.

Further, the detection pipe 12 includes:

a first connecting pipe 1201, a first spiral pipe 1202, a second connecting pipe 1203 and a second spiral pipe 1204 which are connected in series in sequence;

one end of the first connecting pipe 1201, which is far away from the first spiral pipe 1202, penetrates through the heat preservation mechanism 10, extends into the corrugated pipe 2 to be detected, and is hermetically connected with one end of the corrugated pipe 2 to be detected, the second spiral pipe 1204 is connected with the pressure gauge 11, and heat preservation layers are arranged on the first connecting pipe 1201 and the first spiral pipe 1202.

Specifically, the first connecting pipe 1201, the first spiral pipe 1202, the second connecting pipe 1203 and the second spiral pipe 1204 are used in cooperation, cooling, vibration reduction and buffering effects can be achieved, wherein the bellows 2 to be detected, the first connecting pipe 1201, the first spiral pipe 1202, the second connecting pipe 1203 and the second spiral pipe 1204 can be detachably connected or fixedly connected, for example, through bolt connection or welding.

The heat preservation layer is used for reducing the loss of gas and temperature in the high-temperature box 5, which is the prior art and is not described herein again.

Further, in order to enable the pressure gauge 11 to better detect the air pressure inside the bellows to be detected 2, in the application, an energy accumulator is arranged on the second connecting pipe 1203 and used for protecting the pressure gauge 11 and the bellows to be detected 2, when the device performs a two-channel combined displacement test, the bellows to be detected 2 is continuously compressed and stretched inside the high-temperature box, so that the internal volume of the bellows to be detected is continuously changed, namely when the bellows to be detected 2 is compressed, the internal volume of the product is reduced, so that the internal pressure is increased; wait to detect bellows 2 when tensile, product internal volume grow, lead to internal pressure to reduce, when waiting to detect bellows 2 compression, unnecessary atmospheric pressure partly will be stored through the inside that detects pipeline 12 entering energy storage ware, when waiting to detect bellows 2 when tensile, the atmospheric pressure of storage can be through the inside that detects bellows 2 is waited to detect again through detecting pipeline 12, the balance of its inside atmospheric pressure has been guaranteed, improve the effect that manometer 11 carries out the detection, avoid its internal volume to change, lead to manometer 11 and wait to detect bellows 2 and damage, when the influence device is treated and is detected bellows 2 and experimented, measure the accuracy of data.

Further, for better treat that bellows 2 that detects carries out the two channel displacement experiments of high temperature high pressure axle/footpath, in this application, the inside device of high-temperature box 5 all adopts high temperature resistant material to make, first connecting axle 8, second connecting axle 9, two flanges promptly, and two gland flanges 1002, first connecting pipe 1201, first spiral pipe 1202, second connecting pipe 1203 and second spiral pipe 1204 all adopt high nickel alloy to make. Wherein the high nickel alloy is 316H stainless steel, or Incoloy 825.

As shown in fig. 1-2, according to some embodiments of the present application, further, the rack 1 further includes:

a guide post 103, a guide sleeve 104 and a first moving platform 105; two ends of the guide posts 103 are respectively connected with the support platform 101 and the workbench 102, the number of the guide posts is at least two, and the guide posts 103 are parallel to each other; the guide sleeve 104 is arranged on the guide post 103 and is connected with the guide post 103 in a sliding manner; the first moving platform 105 is slidably connected with the guide post 103 through the guide sleeve 104; the upper surface of the first moving platform 105 is connected to the driving end of the first driver 3, and the lower surface of the first moving platform 105 is connected to one end of the first connecting shaft 8 close to the first driver 3.

Specifically, the number of the guide posts 103 is preferably four, the guide posts 103 can support the supporting platform 101, and then the guide posts 103, the guide sleeve 104 and the first moving platform 105 can be used in cooperation to achieve a guiding effect, so that the stability of the axial reciprocating motion of the first driver 3 is improved.

Wherein, but the drive end of first driver 3 and first moving platform 105 direct welded connection also can be through the coupling joint, can also be through bolted connection, in this application, preferentially select for use the bolt to be connected between first driver 3 and the first moving platform 105, because of the bolt loses or be equipped with the convenience when damaging, has bigger economic benefits. The guide sleeve 104 and the first mobile platform 105 can be directly connected, detachable connection or fixed connection is adopted, for example, bolt connection or welding is adopted, indirect connection can also be carried out, detachable connection or fixed connection can be adopted between the first mobile platform 105 and the first connecting shaft 8, for example, bolt connection or welding is adopted, in the application, bolts are preferably used for connection between the first mobile platform 105 and the first connecting shaft 8, convenience is brought to equipment when the bolts are lost or damaged, and the economic benefit is greater.

In addition, the guide sleeve 104 is made of graphite and copper sleeve, and can play a role of lubrication.

As shown in fig. 1, 2, 6, 7, and 8, according to some embodiments of the present application, optionally, the bellows high-temperature pressurized combined displacement fatigue test apparatus further includes:

a second movable platform 13 and a connecting seat 14; the second moving platform 13 is arranged on the workbench 102 and is connected with the workbench 102 in a sliding manner, and the upper surface of the second moving platform 13 is connected with one end, close to the workbench 102, of the second connecting shaft 9; the connecting seat 14 is disposed on the upper surface of the second moving platform 13 near the edge, and the connecting seat 14 is connected to the driving end of the second driver 4.

Specifically, the upper surface of workstation 102 sets up a plurality of guide rails, can adopt between workstation 102 and the guide rail to dismantle and be connected or fixed connection, for example through bolted connection, or welding, in this application, preferably select the bolt to be connected between workstation 102 and the guide rail, because of the bolt is lost or be equipped with when damaging conveniently, has bigger economic benefits. The lower surface of second moving platform 13 sets up the sliding sleeve that the adaptation used in the guide rail, can adopt between second moving platform 13 and the sliding sleeve to dismantle and be connected or fixed connection, for example through bolted connection, perhaps welding, in this application, preferentially select for use the bolt to be connected between second moving platform 13 and the sliding sleeve, because of the bolt is lost or be equipped with the convenience when damaging, has bigger economic benefits. Sliding connection between sliding sleeve and the guide rail can play the effect of direction, improves second driver 4 and carries out radial reciprocating motion's stability, and the drive end of second driver 4 drives second moving platform 13 and when carrying out radial reciprocating motion on workstation 102 promptly, second moving platform 13 drives second connecting axle 9, makes and waits to detect bellows 2 and carry out radial reciprocating motion in high temperature box 5. Second driver 4 is connected through connecting seat 14 with second moving platform 13, wherein, between second driver 4 and the connecting seat 14 and between connecting seat 14 and second moving platform 13, can adopt and dismantle connection or fixed connection, for example through bolted connection, perhaps welding, in this application, preferably select the bolt to connect it, because of the bolt is lost or be equipped with the convenience when damaging, has bigger economic benefits.

Further, in order to perform the axial/radial dual-channel displacement experiment on the bellows 2 to be detected under the high-temperature and high-pressure condition, in the application, high-temperature-resistant heat insulation materials are respectively arranged between the first moving platform 105 and the first connecting shaft 8 and between the second moving platform 13 and the second connecting shaft 9. Wherein the high-temperature resistant heat insulation material is a zirconium-containing fiber blanket.

As shown in fig. 1-2, according to some embodiments of the present application, optionally, the bellows high-temperature pressurized combined displacement fatigue test apparatus further includes:

two pressure sensors 15 respectively disposed between the first driver 3 and the first moving platform 105 and between the second driver 4 and the connecting seat 14; the two pressure sensors 15 are respectively connected with the control device, and the control device calculates the rigidity of the bellows 2 to be detected according to the pressure values obtained by the two pressure sensors 15.

Specifically, pressure sensor 15 is prior art, and no longer gives details here, and it is connected with controlling means, and according to the drive end of first driver 3 and the drive end of second driver 4, when bellows 2 that treats to detect carries out tensile action and compression action, the power that produces is gathered, feeds back to controlling means through feedback signal, and controlling means carries out corresponding record to the numerical value of acquireing. Finally, the absolute value of the force generated by the stretching action and the absolute value of the force generated by the compressing action are divided by the total absolute value of the stretching and compressing displacement acquired by the displacement sensor 6, and the obtained data is the numerical value of the rigidity of the corrugated pipe 2 to be detected. Wherein, a detachable connection or a fixed connection can be adopted between one pressure sensor 15 and the first moving platform 105 and the driving end of the first driver 3, for example, through a bolt connection, or a welding connection. The other pressure sensor 15 can be detachably connected or fixedly connected with the connecting seat 14 and the driving end of the second driver 4, for example, by bolts or welding.

As shown in fig. 1, 2, and 9, according to some embodiments of the present application, optionally, the bellows high-temperature pressurized combined displacement fatigue test apparatus further includes:

the supporting mechanism 16 is arranged on the workbench 102 and is used for supporting the cylinder end of the second driver 4 and adjusting the horizontally arranged second driver 4 in the vertical direction; wherein the support mechanism 16 includes: a first support structure 1601 and a second support structure 1602; the first support structure 1601 includes: a first fixed part and a first movable part; the first fixing portion is disposed on the table 102; two side surfaces of the first movable part are respectively connected with the first fixed part in a sliding manner, and the first movable part is connected with one end of the cylinder body of the second driver 4; the second support structure 1602 includes: a second fixed part and a second movable part; the second fixing portion is disposed on the table 102; two side surfaces of the second movable part are respectively in transmission connection with the second fixed part, and the second movable part is connected with the other end of the cylinder body of the second driver 4.

Specifically, the first supporting structure 1601 and the second supporting structure 1602 are both prior art, wherein, the both sides face of the first movable part and the both sides face sliding connection of the first fixed part inboard, the upper surface of the first movable part sets up the screw rod, the upper surface of the first fixed part inboard is passed to one end of screw rod, and one end threaded connection of screw rod has a flange. Can adopt between first fixed part and the workstation 102 can dismantle to be connected or fixed connection, for example through bolted connection, or welding, in this application, preferentially select the bolt to be connected between first fixed part and the workstation 102, be equipped with the convenience when losing or damaging because of the bolt, have bigger economic benefits. Two side surfaces of the inner side of the second fixed part are in transmission connection with two side surfaces of the second movable part through gears and chains. Can adopt between second fixed part and the workstation 102 can dismantle to be connected or fixed connection, for example through bolted connection, or welding, in this application, preferentially select for use the bolt to be connected between second fixed part and the workstation 102, be equipped with the convenience when losing or damaging because of the bolt, have bigger economic benefits. Through adjusting the connecting flange, the screw rod is made to perform axial reciprocating motion, so that the first movable part and the second movable part are driven to perform axial reciprocating motion on the first fixed part and the second fixed part, and the effect of performing axial adjustment on the workbench 102 by the horizontally-installed second driver 4 is realized.

It will be appreciated that the relevant features of the devices described above may be referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1. The utility model provides a bellows high temperature area presses combination displacement fatigue test device which characterized in that includes:

the top of the bracket is provided with a supporting table, and the bottom of the bracket is provided with a workbench;

the first driver is vertically arranged on the support table, and the driving end of the first driver can reciprocate along the vertical direction;

the second driver is horizontally arranged on the workbench, and the driving end of the second driver can reciprocate along the horizontal direction;

the high-temperature box is arranged between the workbench and the support table through a bearing part and used for accommodating a sealed corrugated pipe to be detected which is vertically placed, and a first communicating hole and a second communicating hole are respectively formed in the top and the bottom of the high-temperature box;

the bearing part includes: a roller and a support frame; the roller is arranged at the bottom of the support frame, wherein the roller has a braking effect; the top of the support frame is provided with the high-temperature box; one end of the first connecting shaft vertically penetrates through a first communicating hole and extends into the high-temperature box to be connected with one end of the corrugated pipe to be detected, the first connecting shaft is connected with a first communicating hole in a sealing and sliding mode, and the other end of the first connecting shaft is connected with the driving end of the first driver;

one end of the second connecting shaft vertically penetrates through a second communicating hole to extend into the high-temperature box to be connected with the other end of the corrugated pipe to be detected, the second connecting shaft is connected with the second communicating hole in a sealing and sliding mode, and the other end of the second connecting shaft is connected with the driving end of the second driver;

the two heat preservation mechanisms are respectively arranged on the first communication hole and the second communication hole;

wherein, heat preservation mechanism includes:

the high-temperature base line sealing structure comprises a high-temperature base line sealing structure, a gland flange and a graphite packing;

one high-temperature base line sealing structure is in interference fit with one side, close to the inner surface of the high-temperature box, of the first communication hole, and the other high-temperature base line sealing structure is in interference fit with one side, close to the inner surface of the high-temperature box, of the second communication hole;

the two gland flanges are respectively connected with the outer surfaces of the high-temperature box at the first through hole and the second through hole;

the graphite packing is arranged between the high-temperature baseline sealing structure and the gland flange, and two ends of the graphite packing respectively abut against the high-temperature baseline sealing structure and the gland flange;

one end of the first connecting shaft vertically penetrates through the heat insulation mechanism located in the first communicating hole and is in sliding connection with the heat insulation mechanism, and one end of the second connecting shaft vertically penetrates through the heat insulation mechanism located in the second communicating hole and is in sliding connection with the heat insulation mechanism;

the control device is respectively connected with the first driver and the second driver;

the control device respectively controls the driving end of the first driver and the driving end of the second driver to move for a preset distance, and records the driving times of the first driver and the second driver.

2. The bellows high temperature and pressure combined displacement fatigue test device of claim 1, further comprising:

two displacement sensors respectively arranged on the first driver and the second driver; the detection ends of the two displacement sensors respectively correspond to the driving end of the first driver and the driving end of the second driver;

the two displacement sensors are connected with the control device, and the control device obtains the movement numerical values of the driving end of the first driver and the driving end of the second driver based on the two displacement sensors.

3. The bellows high-temperature pressurized combined displacement fatigue test device according to claim 1 or 2, further comprising:

a pressure gauge and a detection pipeline;

the pressure gauge is connected with one end of the detection pipeline, the other end of the detection pipeline penetrates through the heat preservation mechanism and extends into one end of the corrugated pipe to be detected, and the detection pipeline is communicated with the corrugated pipe to be detected.

4. A bellows high temperature pressure combined displacement fatigue test device of claim 3, wherein the detection pipeline comprises:

the first connecting pipe, the first spiral pipe, the second connecting pipe and the second spiral pipe are sequentially connected in series;

the first connecting pipe is connected with the pressure gauge, one end of the first spiral pipe, far away from the first spiral pipe, penetrates through the heat preservation mechanism to extend into the corrugated pipe to be detected and is in sealed connection with one end of the corrugated pipe to be detected, the second spiral pipe is connected with the pressure gauge, and heat preservation layers are arranged on the first connecting pipe and the first spiral pipe.

5. The bellows high temperature belt pressure combination displacement fatigue test device of claim 1, characterized in that, the support still includes:

the guide post, the guide sleeve and the first moving platform;

two ends of the guide columns are respectively connected with the support table and the workbench, the number of the guide columns is at least two, and the guide columns are parallel to each other;

the guide sleeve is arranged on the guide post and is in sliding connection with the guide post;

the first moving platform is connected with the guide post in a sliding mode through the guide sleeve;

the upper surface of the first moving platform is connected with the driving end of the first driver, and the lower surface of the first moving platform is connected with one end, close to the first driver, of the first connecting shaft.

6. A bellows high temperature area combination displacement fatigue test device of claim 5, characterized by further comprises:

a second mobile platform and a connecting seat;

the second moving platform is arranged on the workbench and is in sliding connection with the workbench, and the upper surface of the second moving platform is connected with one end, close to the workbench, of the second connecting shaft;

the connecting seat is arranged at a position, close to the edge, of the upper surface of the second moving platform, and the connecting seat is connected with the driving end of the second driver.

7. The bellows high temperature area pressure combination displacement fatigue test device of claim 6, characterized by further comprising:

the two pressure sensors are respectively arranged between the first driver and the first moving platform and between the second driver and the connecting seat;

the two pressure sensors are respectively connected with the control device, and the control device calculates the rigidity of the corrugated pipe to be detected according to the pressure values acquired by the two pressure sensors.

8. A bellows high temperature area combination displacement fatigue test device of claim 6 or 7, characterized by further comprises:

and the supporting mechanism is arranged on the workbench and used for supporting the cylinder body end of the second driver so as to adjust the second driver which is horizontally arranged in the vertical direction.

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