Testing system for simulating limit working condition

Abstract

The utility model relates to the technical field of temperature and pressure test devices, and provides a test system for simulating limit working conditions, which comprises a detection container, a PLC (programmable logic controller) control system, an inlet pipe, an air compressor and a low-temperature inactive gas storage tank, a pressure sensor and a temperature sensor are also arranged; an inlet pipe of the air compressor is provided with a first regulating valve; an inlet pipe of the low-temperature inert gas storage tank is provided with a second regulating valve; and the PLC control system is electrically connected with the first regulating valve and the second regulating valve to control the pressure of the detection container, is electrically connected with a heat source of the heating belt to control the temperature of the detection container, and is electrically connected with the pressure sensor and the temperature sensor to monitor the temperature and the pressure of the detection container. The beneficial effects of the utility model lie in that the sealing performance and the structural stability of the detection container under extreme temperature and pressure conditions can be comprehensively evaluated by controlling the operation state of the detection container under extreme working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of temperature and pressure test device, specifically relates to a test system of simulation limit working condition. BACKGROUND

[0002] Pressure vessels indeed face high temperature, low temperature, high pressure, low pressure and fatigue and other complex working condition challenges in the process of use. These conditions have a significant impact on the performance and safety of the container. At present, although the pressure vessel carries out pressure and air tightness test at normal temperature, but this method cannot fully simulate the complex environment and conditions that the container bears in the actual working state. Especially in the pressure vessel containing extremely or highly hazardous medium, this limitation is particularly obvious, because once these containers leak or fail, it may cause serious consequences.

[0003] The factors related to the limit working condition include high temperature and low temperature working condition, the extreme change of temperature can cause the thermal stress of container material to increase, which may cause elastic plastic deformation or even damage; high pressure and low pressure working condition: the sharp fluctuation of pressure can produce different pressure distribution and impact force on the container wall, affecting the stability and safety of the container, and the coupling effect of temperature and pressure needs to be considered comprehensively to evaluate the change of material performance; also including fatigue working condition, the pressure vessel is easily damaged by fatigue in the long-term use process under the action of alternating load.

[0004] Therefore, in order to more comprehensively verify the use effect of the pressure vessel in the working state, it is necessary to develop and apply more advanced testing devices and testing technologies to simulate the multi-parameter comprehensive test under the actual working condition, so as to ensure that the design, manufacture and maintenance of the container can meet the safety requirements in actual application. INVENTION CONTENTS

[0005] The utility model aims at realizing that the sealing performance and structural stability of the container under the condition of extreme temperature and pressure can be comprehensively evaluated and detected.

[0006] The utility model provides a test system of simulation limit working condition, including detection container and PLC control system, including detection container, the container wall sets up the insulating layer and winds the heating band at the outside, sets up the import pipe and connects air compressor and low temperature inert gas storage tank, still is provided with pressure sensor and temperature sensor;

[0007] The air compressor import pipe sets up the first regulating valve, and the low temperature inert gas storage tank import pipe sets up the second regulating valve;

[0008] PLC control system, electric connection first regulating valve and second regulating valve control the pressure of detection container, electric connection the heat source of heating band control the temperature of detection container, and electric connection pressure sensor and temperature sensor monitor and control the temperature and pressure of detection container.

[0009] As a preferred solution, the detection container is provided with a vent valve, and the vent valve is electrically connected with a PLC control system remote control switch.

[0010] As a preferred solution, the detection container is provided with two-stage safety valves, including a main safety valve and a secondary safety valve.

[0011] As a preferred solution, the detection container is provided with a leak detector to detect the air leakage of the outer wall.

[0012] As a preferred solution, the air compressor is provided with a filter to filter impurities.

[0013] As a preferred solution, the low-temperature inert gas in the low-temperature inert gas storage tank is a liquid inert gas or liquid nitrogen.

[0014] As a preferred solution, the low-temperature inert gas storage tank is provided with a low-temperature vaporizer, and a liquid outlet valve is arranged between the low-temperature inert gas storage tank and the low-temperature vaporizer to control the liquid outlet amount.

[0015] The utility model has the advantages that:

[0016] 1. The utility model can comprehensively evaluate the sealing performance and structural stability of the detection container under extreme temperature and pressure conditions by controlling the running state of the detection container under extreme working conditions, comprehensively reveals the potential problems of the container under extreme environment, such as material fatigue, sealing failure or structural deformation, and thus provides accurate judgment basis for the design optimization and quality control of the container.

[0017] 2. The utility model is provided with adjusting valves on the connecting pipelines, safety valves and temperature and pressure measuring components on the containers to be detected, realizes various alternating load changes by using a PLC control system, detects all welds and flange seals of the test equipment by using a leak detector, ensures the accuracy and consistency of the test conditions, and thus improves the reliability and repeatability of the test results. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to make the content of the utility model more easily understood clearly, the utility model is further described in detail below according to specific embodiments and in combination with the drawings, wherein

[0019] Figure 1 The utility model is a structural schematic view.

[0020] Reference numerals in the drawings are as follows:

[0021] 1, air compressor; 2, PLC control system; 4, vent valve; 5, main safety valve; 6, pressure sensor; 7, temperature sensor; 8, secondary safety valve; 9, heat source; 10, leak detector; 11, heating belt; 13, detection container; 14, first regulating valve; 15, filter; 16, second regulating valve; 17, low-temperature vaporizer; 18, liquid outlet valve; 19, low-temperature inert gas storage tank. DETAILED DESCRIPTION

[0022] To illustrate the characteristics of the present application, the present application will be further described below in conjunction with the drawings and examples.

[0023] Example 1:

[0024] Please refer to Figure 1 The embodiment of the present application provides a test system for simulating extreme working conditions, which comprises a detection container 13 and a PLC control system 2.

[0025] The detection container 13 is provided with a heat preservation layer on the container wall and a heating belt 11 is wound outside, an inlet pipe is provided and connected with an air compressor 1 and a low-temperature inert gas storage tank 19, and a pressure sensor 6 and a temperature sensor 7 are also provided.

[0026] The air compressor 1 inlet pipe is provided with a first regulating valve 14, and the low-temperature inert gas storage tank 19 inlet pipe is provided with a second regulating valve 16.

[0027] The PLC control system 2 is electrically connected with the first regulating valve 14 and the second regulating valve 16 to control the pressure of the detection container 13, is electrically connected with the heat source 9 of the heating belt 11 to control the temperature of the detection container 13, and is electrically connected with the pressure sensor 6 and the temperature sensor 7 to monitor the temperature and pressure of the detection container 13.

[0028] Preferably, the detection container 13 of the embodiment is provided with a vent valve 4, and the vent valve 4 is electrically connected with the PLC control system 2 for remote control.

[0029] Preferably, the detection container 13 of the embodiment is provided with two-stage safety valves, including a main safety valve 5 and a secondary safety valve 8.

[0030] Preferably, the detection container 13 of the embodiment is provided with a leak detector 10 to detect the air leakage of the outer wall.

[0031] Preferably, the air compressor 1 of the embodiment is provided with a filter 15 to filter impurities.

[0032] Preferably, the low-temperature inert gas in the low-temperature inert gas storage tank 19 of the embodiment is liquid nitrogen, a low-temperature vaporizer 17 is arranged in the low-temperature inert gas storage tank 19, and a liquid outlet valve 18 is arranged between the low-temperature inert gas storage tank 19 and the low-temperature vaporizer 17 to control the liquid outlet amount.

[0033] The above embodiments and drawings are only used to illustrate the technical solutions of the present application, and are not a limitation on the present application. The present application is described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the present application do not deviate from the purpose of the present application, and should also belong to the protection scope of the claims of the present application. Other related technical structures not fully disclosed in the present application are the existing technologies in the art.

Claims

1. A test system for simulating extreme working conditions, comprising a detection container (13) and a PLC control system (2), characterized in that: the detection container (13) is provided with a heat insulation layer on the container wall and a heating belt (11) wrapped outside, an inlet pipe connected with an air compressor (1) and a low-temperature inert gas storage tank (19), and a pressure sensor (6) and a temperature sensor (7); the air compressor (1) is provided with a first regulating valve (14) at the inlet pipe, and the low-temperature inert gas storage tank (19) is provided with a second regulating valve (16) at the inlet pipe; the PLC control system (2) is electrically connected with the first regulating valve (14) and the second regulating valve (16) to control the pressure of the detection container (13), electrically connected with a heat source (9) of the heating belt (11) to control the temperature of the detection container (13), and electrically connected with the pressure sensor (6) and the temperature sensor (7) to monitor the temperature and pressure of the detection container (13). The detection container (13) is provided with a vent valve (4) electrically connected with the PLC control system (2) for remote control. The detection container (13) is provided with two-stage safety valves, including a main safety valve (5) and a secondary safety valve (8). The detection container (13) is provided with a leak detector (10) to detect the air leakage of the outer wall.

2. A test system simulating extreme conditions according to claim 1, characterized in that: The air compressor (1) is provided with a filter (15) to filter impurities.

3. The test system simulating extreme conditions according to claim 1, characterized in that: The low-temperature gas in the low-temperature inert gas storage tank (19) is inert gas in liquid state or liquid nitrogen.

4. The test system simulating extreme conditions of claim 1, wherein: The low-temperature inert gas storage tank (19) is provided with a low-temperature vaporizer (17), and a liquid outlet valve (18) is arranged between the low-temperature inert gas storage tank (19) and the low-temperature vaporizer (17) to control the liquid outlet amount.

5. A test system simulating extreme conditions according to claim 4, characterized in that: ​ 6. The test system simulating extreme conditions of claim 1, wherein: ​ 7. A test system simulating extreme conditions according to claim 6, characterized in that: ​

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