阅读说明：本技术 管材高温***压力控制系统及方法 (pipe high-temperature blasting pressure control system and method ) 是由 唐毅 陈银强 桂春 韩娟 廖波 龚怒 肖青山 徐柱 别情超 于 2019-09-25 设计创作，主要内容包括：本发明属于核电维修技术领域,具体涉及一种管材高温爆破压力控制系统及方法,管材高温爆破压力控制系统包括：用于加热待测管材的高温装置、用于冷却待测管材中流出的液体的冷却装置；用于调节待测管材中的液压的液压压力装置、用于检测待测管材中的液体的压力值的压力传感器、用于测量高温装置的温度的温度传感器和控制装置；控制装置从压力传感器获取压力值,并从温度传感器获取温度值；控制装置还与液压压力装置连接,控制装置在判断获取到的温度值未达到预设温度值,且获取到的压力值不符合预设条件的情况下,控制液压压力装置调整待测管材中的液压,直至控制装置获取到的压力值符合预设条件,本公开实施例的压力试验更加精准安全。(The invention belongs to the technical field of nuclear power maintenance, and particularly relates to a pipe high-temperature blasting pressure control system and a method, wherein the pipe high-temperature blasting pressure control system comprises: the device comprises a high-temperature device for heating the pipe to be tested and a cooling device for cooling liquid flowing out of the pipe to be tested; the device comprises a hydraulic pressure device for adjusting the hydraulic pressure in the pipe to be measured, a pressure sensor for detecting the pressure value of the liquid in the pipe to be measured, a temperature sensor for measuring the temperature of the high-temperature device and a control device; the control device acquires a pressure value from the pressure sensor and a temperature value from the temperature sensor; the control device is further connected with the hydraulic pressure device, the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be tested under the condition that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the obtained pressure value accords with the preset condition, and the pressure test of the embodiment of the disclosure is more accurate and safe.)

1. The pipe high-temperature burst pressure control system is characterized by comprising: the device comprises a high-temperature device, a cooling device, a hydraulic pressure device, a pressure sensor, a temperature sensor and a control device;

The high-temperature device is used for heating the pipe to be measured;

The temperature sensor is connected with the high-temperature device and used for measuring the temperature of the high-temperature device;

The cooling device is connected with the high-temperature device and is used for cooling liquid flowing out of the pipe to be measured;

The hydraulic pressure device is connected with the cooling device and used for adjusting the hydraulic pressure in the pipe to be measured;

The pressure sensor is connected with the hydraulic pressure device and used for detecting the pressure value of the liquid in the pipe to be detected;

The control device is respectively connected with the pressure sensor and the temperature sensor, acquires a pressure value from the pressure sensor and acquires a temperature value from the temperature sensor;

The control device is further connected with the hydraulic pressure device, and the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be tested under the condition that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the obtained pressure value accords with the preset condition.

2. The system for controlling the high-temperature burst pressure of the pipe according to claim 1, wherein the control device controls the hydraulic pressure device to increase the hydraulic pressure in the pipe to be tested until the pipe to be tested is broken when the acquired temperature value is judged to reach a preset temperature value.

3. The system for controlling the high-temperature burst pressure of the pipe according to claim 1, wherein the system for controlling the high-temperature burst pressure of the pipe comprises a plurality of cooling devices and a plurality of pressure control devices, the high-temperature devices can heat a plurality of pipes to be tested, and the high-temperature devices are provided with a plurality of interfaces for connecting the pipes to be tested;

Each interface is connected with a cooling device;

Each cooling device is connected with a pressure control device;

The pressure control devices are respectively connected with the control device;

And the control device controls the hydraulic pressure device and/or the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured under the condition that the obtained temperature value is judged not to reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the pressure value obtained by the control device accords with the preset condition.

4. the system for controlling high-temperature burst pressure of a pipe according to claim 3, wherein the control device controls the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be tested until the pressure values obtained by the control device meet the preset conditions, if the pressure values obtained by the control device do not meet the preset conditions after the control device controls the hydraulic pressure device to adjust the hydraulic pressure of the pipe to be tested, when the obtained temperature values do not meet the preset temperature values and the obtained pressure values do not meet the preset conditions.

5. a tube high temperature burst pressure control system as claimed in claim 3 wherein each pressure control means includes an electromagnetic valve and a pneumatically controlled valve connected to each other, each pneumatically controlled valve being connected to a cooling means, each electromagnetic valve being connected to the control means.

6. The system of claim 3, wherein the high temperature device comprises a protection device, and the protection device isolates the pipes to be tested from each other to prevent the cracked pipes to be tested from affecting the unbroken pipes to be tested.

7. The system for controlling the high-temperature burst pressure of the pipe according to claim 6, wherein the protection device is a porous protection pipe, and each protection pipe is covered on the outer side of one pipe to be tested.

8. The system for controlling the high-temperature burst pressure of the pipe according to claim 1, wherein the hydraulic pressure device comprises a first pressure device and a second pressure device, the control device controls the first pressure device to adjust the hydraulic pressure of the pipe to be measured when the obtained pressure value is judged to be greater than or equal to a preset pressure value, and the control device controls the second pressure device to adjust the hydraulic pressure of the pipe to be measured when the obtained pressure value is judged to be less than or equal to the preset pressure value.

9. A pipe high temperature burst pressure control method applied to the pipe high temperature burst pressure control system according to any one of claims 1 to 8, wherein the method comprises the following steps:

The control device acquires a pressure value from the pressure sensor and a temperature value from the temperature sensor;

and the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be measured under the condition that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the pressure value obtained by the control device accords with the preset condition.

10. The method according to claim 9, wherein the control device controls the hydraulic pressure device to increase the hydraulic pressure in the pipe to be tested until the pipe to be tested is broken under the condition that the obtained temperature value is judged to reach the preset temperature value.

11. The method of claim 9, wherein the pipe high temperature burst pressure control system further comprises a plurality of pressure control devices, the method further comprising:

and the control device controls the hydraulic pressure device and/or the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured under the condition that the obtained temperature value is judged not to reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the pressure value obtained by the control device accords with the preset condition.

12. the method according to claim 11, wherein when the control device determines that the obtained temperature value does not reach a preset temperature value and the obtained pressure value does not meet a preset condition, if the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be measured and the obtained pressure value does not meet the preset condition, the control device controls the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured until the obtained pressure value meets the preset condition.

13. The method according to claim 9, wherein the hydraulic pressure device comprises a first pressure device and a second pressure device, the control device controls the first pressure device to adjust the hydraulic pressure in the pipe to be tested when the obtained pressure value is judged to be greater than or equal to a preset pressure value, and the control device controls the second pressure device to adjust the hydraulic pressure in the pipe to be tested when the obtained pressure value is judged to be less than or equal to the preset pressure value.

Technical Field

The invention belongs to the technical field of nuclear power maintenance, and particularly relates to a system and a method for controlling high-temperature blasting pressure of a pipe.

background

Generally, a burst test can be expressed as a method of pressurizing a pressure vessel to rupture the pressure vessel to obtain a corresponding temperature value and pressure value when the pressure vessel ruptures. For the static pressure blasting of the tube at room temperature, in the related art, the static pressure blasting equipment for the tube has obvious defects in the aspect of high-temperature blasting: in order to perform a high temperature test, it is necessary to inject a high temperature liquid into the test tube, vaporize the liquid at a high temperature, and to prevent the liquid from vaporizing, it is generally necessary to provide a pressure regulating vessel (e.g., a pressure regulator) and apply a pressure exceeding the supersaturated air pressure to the test circuit. When the test loops are all in a high-temperature environment, the requirements on sealing components and control components are high, auxiliary test facilities are numerous and complex, the test control difficulty is high, and the test risk is high.

Disclosure of Invention

in order to overcome the problems in the related art, a system and a method for controlling the high-temperature blasting pressure of the pipe are provided.

According to an aspect of the embodiments of the present disclosure, there is provided a pipe high temperature burst pressure control system, including: a high temperature device, a cooling device; the device comprises a hydraulic pressure device, a pressure sensor, a temperature sensor and a control device;

The high-temperature device is used for heating the pipe to be measured;

The temperature sensor is connected with the high-temperature device and used for measuring the temperature of the high-temperature device;

The cooling device is connected with the high-temperature device and is used for cooling liquid flowing out of the pipe to be measured;

the hydraulic pressure device is connected with the cooling device and used for adjusting the hydraulic pressure in the pipe to be measured;

The pressure sensor is connected with the hydraulic pressure device and used for detecting the pressure value of the liquid in the pipe to be detected;

The control device is respectively connected with the pressure sensor and the temperature sensor, acquires a pressure value from the pressure sensor and acquires a temperature value from the temperature sensor;

the control device is further connected with the hydraulic pressure device, and the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be tested under the condition that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the obtained pressure value accords with the preset condition.

in a possible implementation manner, the control device controls the hydraulic pressure device to increase the hydraulic pressure in the pipe to be detected under the condition that the acquired temperature value is judged to reach the preset temperature value until the pipe to be detected is broken.

in one possible implementation manner, the pipe high-temperature bursting pressure control system comprises a plurality of cooling devices and a plurality of pressure control devices, wherein the high-temperature devices can heat a plurality of pipes to be tested, and are provided with a plurality of interfaces for connecting the pipes to be tested;

Each interface is connected with a cooling device;

Each cooling device is connected with a pressure control device;

the pressure control devices are respectively connected with the control device;

And the control device controls the hydraulic pressure device and/or the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured under the condition that the obtained temperature value is judged not to reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the pressure value obtained by the control device accords with the preset condition.

in a possible implementation manner, the control device determines that the obtained temperature value does not reach a preset temperature value and the obtained pressure value does not meet a preset condition, and if the control device controls the hydraulic pressure device to adjust the hydraulic pressure of the pipe to be measured, the pressure value obtained by the control device does not meet the preset condition yet, the control device controls the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured until the pressure value obtained by the control device meets the preset condition.

In a possible implementation, each pressure control device comprises a solenoid valve and a pneumatic control valve connected to each other, each pneumatic control valve being connected to one cooling device, each solenoid valve being connected to the control device.

in one possible implementation manner, the high-temperature device comprises a protection device, and the protection device isolates the pipes to be tested from each other so as to prevent the cracked pipes to be tested from influencing the unbroken pipes to be tested.

In a possible implementation manner, the protection device is a porous protection tube, and each protection tube is covered on the outer side of one pipe to be tested.

In a possible implementation manner, the hydraulic pressure device includes a first pressure device and a second pressure device, the control device controls the first pressure device to adjust the hydraulic pressure in the pipe to be tested when it is determined that the obtained pressure value is greater than or equal to a preset pressure value, and the control device controls the second pressure device to adjust the hydraulic pressure in the pipe to be tested when it is determined that the obtained pressure value is less than or equal to the preset pressure value.

according to another aspect of the embodiments of the present disclosure, there is provided a method for controlling a high-temperature burst pressure of a pipe, the method being applied to the above-mentioned system for controlling a high-temperature burst pressure of a pipe, the method including:

The temperature sensor measures the temperature of the high-temperature device;

The pressure sensor detects the pressure value of the liquid in the pipe to be detected;

the control device acquires a pressure value from the pressure sensor and a temperature value from the temperature sensor;

And the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be measured under the condition that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the pressure value obtained by the control device accords with the preset condition.

In a possible implementation manner, the control device controls the hydraulic pressure device to increase the hydraulic pressure in the pipe to be detected under the condition that the acquired temperature value is judged to reach the preset temperature value until the pipe to be detected is broken.

In one possible implementation, the system for controlling high-temperature burst pressure of the pipe further includes a plurality of pressure control devices, and the method further includes:

and the control device controls the hydraulic pressure device and/or the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured under the condition that the obtained temperature value is judged not to reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the pressure value obtained by the control device accords with the preset condition.

In a possible implementation manner, the control device determines that the obtained temperature value does not reach a preset temperature value and the obtained pressure value does not meet a preset condition, and if the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be measured, the pressure value obtained by the control device does not meet the preset condition yet, the control device controls the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured until the pressure value obtained by the control device meets the preset condition.

in a possible implementation manner, the hydraulic pressure device includes a first pressure device and a second pressure device, the control device controls the first pressure device to adjust the hydraulic pressure in the pipe to be tested when it is determined that the obtained pressure value is greater than or equal to a preset pressure value, and the control device controls the second pressure device to adjust the hydraulic pressure in the pipe to be tested when it is determined that the obtained pressure value is less than or equal to the preset pressure value.

The beneficial effects of this disclosed embodiment lie in: this disclosed embodiment utilizes the temperature of cooling device cooling high temperature device output liquid, restrict the high temperature at the local return circuit of tubular product high temperature blasting pressure control system, make controlling means, pressure sensor can normal atmospheric temperature instrument can work in lower temperature environment, can use the normal atmospheric temperature instrument that the precision is higher and the cost is lower to carry out the control of high temperature blasting test and detect from this, the measurement accuracy of experimental data has been improved, furthermore, this disclosed embodiment can be at the hydraulic pressure in the tubular product that awaits measuring of intensification in-process automatic balance, thereby the intensification in-process has been reduced effectively, thereby the emergence probability that leads to the tubular product to become invalid because of intensification pressure rises, and through predetermineeing certain pressure, the emergence probability of liquid high temperature gasification has effectively been avoided.

Drawings

FIG. 1 is a block diagram illustrating a pipe high temperature burst pressure control system in accordance with an exemplary embodiment.

FIG. 2 is a schematic diagram illustrating an exemplary temperature versus pressure change in the pipe under test.

fig. 3 is a flow chart illustrating a method of high temperature burst pressure control of a pipe according to an exemplary embodiment.

Detailed Description

the invention is described in further detail below with reference to the figures and the embodiments.

FIG. 1 is a block diagram illustrating a pipe high temperature burst pressure control system in accordance with an exemplary embodiment. As shown in fig. 1, the pipe high-temperature burst pressure control system may include: a high-temperature device 6 and a cooling device 5; a hydraulic pressure device 1, a pressure sensor 2, a temperature sensor (not shown in the figure) and a control device 3;

The high-temperature device 6 is used for heating the pipe 7 to be measured; the temperature sensor is connected with the high-temperature device 6 and is used for measuring the temperature of the high-temperature device 6; the cooling device 5 is connected with the high-temperature device 6 and is used for cooling liquid flowing out of the pipe 7 to be measured; the hydraulic pressure device 1 is connected with the cooling device 5 and used for adjusting the hydraulic pressure in the pipe 7 to be measured; the pressure sensor 2 is connected with the hydraulic pressure device 1 and is used for detecting the pressure value of the liquid in the pipe 7 to be detected; the control device 3 is respectively connected with the pressure sensors 2 and the temperature sensors, and the control device 3 acquires pressure values from the pressure sensors 2 and temperature values from the temperature sensors; the control device 3 is further connected with the hydraulic pressure device 1, and the control device 3 controls the hydraulic pressure device 1 to adjust the hydraulic pressure in the pipe 7 to be measured under the condition that the obtained temperature value is judged not to reach the preset temperature value and the obtained pressure value is not in line with the preset condition until the pressure value obtained by the control device 3 is in line with the preset condition.

Generally speaking, in a high-temperature explosion test, the pipe to be tested needs to be exploded in a high-temperature environment, so that the explosion pressure of the pipe to be tested at different temperatures is measured. In the high-temperature blasting test process, the pipe to be tested is usually filled with water, and exhaust treatment is carried out at normal temperature, so that the whole pressure loop is ensured to have no gas, and the harm caused by gas blasting is avoided. In the related art, as the temperature rises, the pressure of the liquid in the pipe to be tested also rises, and when the temperature does not reach a preset temperature value (for example, 350 ℃), the pipe to be tested explodes due to excessive internal hydraulic pressure, which causes test failure. Fig. 2 is a schematic diagram illustrating an exemplary relationship between temperature and pressure change in the pipe to be measured, and as shown in fig. 2, when the temperature is raised to 175 ℃, the internal pressure in the pipe to be measured caused by the temperature change can reach 100MPa (megapascals). In addition, loops of a high-temperature blasting system in the related technology are all in a high-temperature environment, requirements for sealing components and controlling components are high, auxiliary test facilities are numerous and complex, test control difficulty is high, and test risks are high.

As an example of the embodiment, the high temperature device 6 may be used to heat the pipe 7 to be tested, for example, the high temperature device 6 may heat the pipe 7 to be tested from room temperature to 1000 ℃ (celsius), the high temperature device 6 may be provided with an interface for connecting the pipe 7 to be tested, the interface may be connected with an external pipeline, the pipe 7 to be tested may be installed on the interface, and a liquid (e.g., water) may be injected into the pipe 7 to be tested through the external pipeline. The interface of the high temperature device 6 may be connected to the cooling device 5 through a pipeline, and the cooling device 5 may cool the liquid output from the pipe 7 to be tested, for example, the cooling device 5 may cool the liquid output from the pipe 7 to be tested to room temperature. The cooling device 5 may be a dividing wall cooler, a spray cooler, a jacketed cooler, etc., and the type of the cooling device 5 is not limited in the embodiments of the present disclosure.

The temperature sensor may be connected to the high temperature device 6, and may measure the temperature of the high temperature device 6. The temperature sensor may be a resistance thermometer, a glass liquid thermometer, or a pressure thermometer, and the embodiment of the disclosure does not limit the type of the temperature sensor.

The hydraulic pressure device 1 may be connected to the cooling device 5, and the hydraulic pressure device 1 may adjust the hydraulic pressure in the pipe 7 to be tested (where, the hydraulic pressure device 1 may be, for example, a pressure cylinder, and the hydraulic pressure in the high-temperature burst pressure control system loop of the pipe including the pipe 7 to be tested may be increased or decreased by moving a piston of the pressure cylinder, it should be noted that other types of hydraulic pressure devices 1 may also be selected, for example, a turbo hydraulic pump, etc., and the type of the hydraulic pressure device 1 is not limited in the embodiments of the present disclosure).

the pressure sensor 2 can be connected with the hydraulic pressure device 1, and the pressure sensor 2 can detect the pressure value of the liquid in the pipe 7 to be detected, for example, the pressure sensor 2 can use the detected pressure value in the hydraulic pressure device 1 as the pressure value of the liquid in the whole high-temperature blasting pressure control system pipeline loop including the pipe 7 to be detected.

the control device 3 can be respectively connected with the pressure sensor 2 and the temperature sensor, and the control device 3 can acquire a pressure value from the pressure sensor 2 and can acquire a temperature value from the temperature sensor. The control device may be, for example, a Micro Controller Unit (MCU), a Central Processing Unit (CPU), and the like, and the type of the control device is not limited in the embodiments of the present disclosure.

The control device 3 can also be connected with the hydraulic pressure device 1, and the control device 3 can send a driving instruction to the hydraulic pressure device 1, so that the hydraulic pressure device 1 adjusts the hydraulic pressure in the pipe 7 to be measured according to the driving instruction. The control device 3 may store a preset temperature (e.g., the preset temperature may be one or more temperature thresholds) and a preset condition for the pressure (e.g., the preset condition may be a pressure value interval or one or more pressure thresholds, and the embodiment of the present disclosure does not limit the specific form of the preset condition).

the control device 3 can judge the magnitude relation between the acquired temperature value and the preset temperature value and judge whether the acquired pressure value meets the preset condition, and the control device 3 can control the hydraulic pressure device 1 to adjust the hydraulic pressure in the pipe 7 to be measured under the condition that the acquired temperature value is judged not to reach the preset temperature value and the acquired pressure value does not meet the preset condition until the pressure value acquired by the control device 3 meets the preset condition. For example, if the preset temperature value is 350 ℃, the preset condition is that the pressure value is less than 80MPa, the obtained current temperature value is 100 ℃, and the obtained current pressure value is 90MPa, the control device may control the hydraulic pressure device to reduce the hydraulic pressure in the pipe to be measured until the pressure value obtained by the control device is 90 MPa. For another example, if the preset temperature value is 350 ℃, the preset condition is that the pressure value is less than 80MPa, the obtained current temperature value is 100 ℃, and the obtained current pressure value is 60MPa, the control device may control the hydraulic pressure device to increase the hydraulic pressure in the pipe to be tested until the pressure value obtained by the control device is 90 MPa.

The control device 3 may control the hydraulic pressure device 1 to increase the hydraulic pressure in the pipe 7 to be measured when it is determined that the obtained temperature value reaches the preset temperature value, until it is detected that the pipe 7 to be measured is broken (wherein, the control device 3 may determine whether a change in the pressure value obtained within the target time period exceeds a preset change threshold, and if the control device 3 determines that a change in the pressure value obtained within the target time period exceeds the change threshold, the control device 3 may determine that the pipe 7 to be measured is broken). The control device 3 may record the obtained pressure value and the obtained temperature value as the temperature and the pressure during the explosion of the pipe 7 to be measured when it is determined that the pipe 7 to be measured is broken.

This disclosed embodiment utilizes the temperature of cooling device cooling high temperature device output liquid, restrict the high temperature at the local return circuit of tubular product high temperature blasting pressure control system, make controlling means, pressure sensor can normal atmospheric temperature instrument can work in lower temperature environment, can use the normal atmospheric temperature instrument that the precision is higher and the cost is lower to carry out the control of high temperature blasting test and detect from this, the measurement accuracy of experimental data has been improved, furthermore, this disclosed embodiment can be at the hydraulic pressure in the tubular product that awaits measuring of intensification in-process automatic balance, thereby the intensification in-process has been reduced effectively, thereby the emergence probability that leads to the tubular product to become invalid because of intensification pressure rises, and through predetermineeing certain pressure, the emergence probability of liquid high temperature gasification has effectively been avoided.

In a possible implementation manner, as shown in fig. 1, the pipe high-temperature bursting pressure control system may include a plurality of cooling devices 5 and a plurality of pressure control devices 4, the high-temperature device 6 may be capable of heating a plurality of pipes 7 to be tested, wherein the high-temperature device 6 may have a plurality of interfaces for connecting the pipes 7 to be tested; each connection can be connected to a cooling device 5 via a line, and each cooling device 5 can be connected to a pressure control device 4. The plurality of pressure control devices 4 may be connected to the control device, respectively. The control device can respectively control the hydraulic pressure device and part or all of the pressure control devices 4 so as to adjust the hydraulic pressure in the pipe 7 to be measured.

For example, the control device may control the hydraulic pressure device and all the pressure control devices 4 to adjust the hydraulic pressure in the pipe 7 to be measured, when it is determined that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not meet the preset condition, until the pressure value obtained by the control device meets the preset condition.

For another example, the control device may control the hydraulic pressure system to adjust the hydraulic pressure in the pipe 7 to be measured first when it is determined that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not meet the preset condition, and if it is determined that the obtained real-time pressure value does not meet the preset condition after the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe 7 to be measured, the control device may control part or all of the pressure control devices 4 to adjust the hydraulic pressure in the pipe 7 to be measured until the pressure value obtained by the control device meets the preset condition.

in a possible implementation, each pressure control device 4 may comprise a solenoid valve 41 and a pneumatic valve 42 connected to each other, each pneumatic valve 42 being connected to one cooling device 5, each solenoid valve 41 being connected to the control device. The control device can control the opening and closing degree of the pneumatic control valve 42 through the electromagnetic valve 41, so that the flow of high-pressure liquid released by the pneumatic control valve 42 is controlled, and the hydraulic pressure in the pipe 7 to be measured is reduced. The pressure control device 4 may be, for example, a pressure increasing cylinder, and the type of the pressure control device 4 is not limited in the embodiment of the present disclosure.

in one possible implementation, the high temperature device may include a protection device, and the protection device may isolate the pipes to be tested from each other to prevent the cracked pipes to be tested from affecting the unbroken pipes to be tested. Further ensuring the safety and accuracy of the test. For example, the protection device may be a porous protection tube, and each protection tube covers the outside of one of the pipes to be tested. The protection device may be, for example, a protective net, and the specific form of the protection device is not limited in the embodiment of the present disclosure.

In a possible implementation manner, the hydraulic pressure device may include a first pressure device and a second pressure device, where a pressure value adjusted by the first pressure device may be lower than a pressure value adjusted by the second pressure device, the control device may control the first pressure device to adjust the hydraulic pressure in the pipe to be measured when it is determined that the obtained pressure value is greater than or equal to a preset pressure value, and the control device may control the second pressure device to adjust the hydraulic pressure in the pipe to be measured when it is determined that the obtained pressure value is less than or equal to the preset pressure value. Therefore, the pressure is controlled more stably, and the effective measurement of the burst pressure of the pipe is facilitated.

application example

An explosion-proof structure can be arranged in the high-temperature device shell, so that the safety of the test is improved. The heating temperature of the high-temperature device can reach 1000 ℃, the highest heating rate can reach 30 ℃/min, and the temperature measurement precision of the temperature sensor can be as follows: 0.5 percent. The high-temperature device can simultaneously carry out the high-temperature blasting test of 6 test pieces.

The hydraulic pressure device can be a pneumatic booster pump, and the control device can control the action frequency of the pneumatic booster pump by controlling the air input of an air source of the pneumatic booster pump, so that the output flow of the system is controlled.

the pneumatic booster pump can adopt high-low pressure parallel double pumps, adopts the low-pressure pump to pressurize during low pressure, adopts the high-pressure pump to pressurize during high pressure.

in the high-temperature test process, the pipe to be tested can be filled with water, and exhaust treatment is carried out at normal temperature, so that the whole pressure loop is ensured to have no gas, and the damage caused by gas explosion is avoided.

In the temperature rise process (namely when the temperature does not reach the preset temperature yet), the control device can control the volume of liquid in the pipeline and the pipe to be measured to be adjusted back or forward through the pressure cylinder of the pneumatic booster pump according to the preset pressure value, so that the pressure of the pipeline is maintained at the preset pressure. For example, after the pre-charging and discharging is completed, the control device may move the pressure cylinder piston to a position corresponding to a maximum pressure value, so that the piston moves to a position corresponding to a minimum pressure value to reduce the pressure when the temperature rises and the pressure rises, if the piston motion value and the position corresponding to the minimum pressure value still need to reduce the pressure, the control device may open the pneumatic control valve corresponding to each electromagnetic valve through each electromagnetic valve to release part of the high-pressure liquid in the pipe loop for pressure relief, and at the same time, after the control device may control the pressure cylinder piston to move to the position corresponding to the maximum pressure value, the pneumatic control valve is closed through the electromagnetic valve, and then the pressure cylinder continues to be used to adjust the pressure until the pressure value obtained by the control device is maintained.

Fig. 3 is a flow chart illustrating a method of high temperature burst pressure control of a pipe according to an exemplary embodiment. The method can be applied to the pipe high-temperature bursting pressure control system, and as shown in fig. 3, the method can include:

Step 300, the control device acquires a pressure value from a pressure sensor and a temperature value from a temperature sensor;

Step 301, when the control device judges that the obtained temperature value does not reach the preset temperature value and the obtained pressure value does not meet the preset condition, the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be measured until the pressure value obtained by the control device meets the preset condition.

In a possible implementation manner, the control device controls the hydraulic pressure device to increase the hydraulic pressure in the pipe to be detected under the condition that the acquired temperature value is judged to reach the preset temperature value until the pipe to be detected is broken.

in one possible implementation, the system for controlling high-temperature burst pressure of the pipe further includes a plurality of pressure control devices, and the method further includes:

And the control device controls the hydraulic pressure device and/or the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured under the condition that the obtained temperature value is judged not to reach the preset temperature value and the obtained pressure value does not accord with the preset condition until the pressure value obtained by the control device accords with the preset condition.

in a possible implementation manner, the control device determines that the obtained temperature value does not reach a preset temperature value and the obtained pressure value does not meet a preset condition, and if the control device controls the hydraulic pressure device to adjust the hydraulic pressure in the pipe to be measured, the pressure value obtained by the control device does not meet the preset condition yet, the control device controls the partial or all pressure control devices to adjust the hydraulic pressure in the pipe to be measured until the pressure value obtained by the control device meets the preset condition.

in a possible implementation manner, the hydraulic pressure device includes a first pressure device and a second pressure device, the control device controls the first pressure device to adjust the hydraulic pressure in the pipe to be tested when it is determined that the obtained pressure value is greater than or equal to a preset pressure value, and the control device controls the second pressure device to adjust the hydraulic pressure in the pipe to be tested when it is determined that the obtained pressure value is less than or equal to the preset pressure value.

The above description of the method is already explained in the above description of the high temperature burst pressure control system, and is not repeated herein.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.