A gas pipe explosion-proof test system and control method

Abstract

The application discloses a kind of gas pipe fittings explosion-proof test system and control method, belong to pipe fittings explosion-proof test technical field, this kind of gas pipe fittings explosion-proof test system, including pump body component, is connected to the input port of the pipe to be measured by input pipeline;Energy storage component, is installed on the input pipeline, for the fluid pressure that the pump body component exports to the input port is regulated;Damping component.By setting energy storage component and damping component, the input port of the pipe to be measured and the output port, i.e.from the fluid input end and fluid output end of the pipe to be measured, the pressure of fluid in main body section is regulated, the synergistic effect of energy storage component and damping component, realize the linear pressure regulating process of fluid in main body section, ensure the accuracy in pipe fittings explosion-proof test process.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of pipe fittings, and particularly relates to a gas pipe fitting explosion-proof test system and a control method. BACKGROUND

[0002] As the most basic component of gas products, pipe fittings bear the important role of conveying gas to valves and furnace heads, and their explosion-proof performance is crucial. If the explosion-proof performance does not meet the standard, gas leakage may occur, which may cause poisoning, fire, and even explosion, etc. Therefore, explosion-proof testing of pipe fittings during manufacturing is particularly important. Patent document CN111624090A discloses a pipe fitting pressure test device to test the pressure of pipe fittings.

[0003] In the existing pipe fitting explosion-proof test process, the fluid pressure in the pipe fitting changes greatly during the test process, and the pressure changes nonlinearly during the pressure change process, which affects the accuracy of pipe fitting explosion-proof test. SUMMARY

[0004] The application aims to provide a gas pipe fitting explosion-proof test system and a control method to solve the problems of the existing explosion-proof test system in use.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a gas pipe fitting explosion-proof test system is arranged around a pipe fitting to be tested, and the test system comprises:

[0006] a pump body component connected to an input port of the pipe fitting to be tested through an input pipeline;

[0007] an energy storage component installed on the input pipeline for regulating the fluid pressure output by the pump body component to the input port;

[0008] a damping component installed on an output port of the pipe fitting to be tested for regulating the pressure relief speed of the fluid at the output port position, and the energy storage component and the damping component respectively regulate the input end and output end fluid pressure of the main body section in the pipe fitting to be tested to realize the stable pressure and linear pressure regulation of the fluid in the main body section.

[0009] Preferably, the test system further comprises a detection component installed on the main body section, and a control component electrically connected with the detection component and the pump body component, and the control component controls the pump body component according to the fluid pressure information transmitted by the detection component to realize the automatic pressure regulation of the fluid in cooperation with the energy storage component and the damping component.

[0010] Preferably, the test system is controlled by a PLC system.

[0011] Preferably, the pressure regulating range of the test system is 0-20 MPa.

[0012] Preferably, the damping component is a damping valve.

[0013] Preferably, the test system further comprises a workbench body, and the workbench body is internally formed with a layout section of the test system.

[0014] Preferably, the layout section in the workbench body is divided into a control section and a test section by a vertically arranged partition plate.

[0015] Preferably, the workbench body is externally provided with a protection component.

[0016] Preferably, the pump body component is a hydraulic valve, and the fluid output pressure is controlled by controlling the blade rotating speed.

[0017] A control method of a gas pipe explosion-proof test system, comprising the following steps:

[0018] S0: setting a preset value of fluid pressure, a fluctuation value one of the preset value, a change preset value of fluid pressure per unit time, and a fluctuation value two of the change preset value according to the specification of the pipe to be tested;

[0019] S1: the control component acquires the real-time value of fluid pressure in the main body section according to the data transmitted by the pressure sensor, and calculates the difference between the real-time value and the preset value (i.e. real-time value-set value);

[0020] S2: when the difference is less than zero and the absolute value of the difference is greater than the fluctuation value one, S20 is executed;

[0021] when the difference is greater than zero and the absolute value of the difference is greater than the fluctuation value one, S21 is executed;

[0022] S20: the rotating speed of the pump body component is increased, and the difference between the change value of the real-time data and the change preset value (i.e. change value of real-time data-change preset value) is calculated;

[0023] when the difference is greater than zero and the absolute value of the difference is greater than the fluctuation value two, S200 is executed;

[0024] when the difference is less than zero and the absolute value of the difference is greater than the fluctuation value two, S201 is executed;

[0025] S200: the energy storage component stores part of the hydraulic energy of the fluid in the output port, and the damping component controls the fluid flow rate in the output port position to increase;

[0026] S201: the energy storage component releases the energy stored therein, and the damping component controls the fluid flow rate in the output port position to decrease;

[0027] S21: the pump body component rotation speed is reduced, and a difference between the change value of the real-time data and the change preset value (i.e., the change value of the real-time data-change preset value) is calculated;

[0028] When the difference is greater than zero and the absolute value of the difference is greater than the fluctuation value two, S210 is performed;

[0029] When the difference is greater than zero and the absolute value of the difference is less than the fluctuation value two, S211 is performed;

[0030] S210: the damping component control output port position fluid flow rate is reduced;

[0031] S211: the damping component control output port position fluid flow rate is increased.

[0032] Compared with the prior art, the beneficial effects of the present application are:

[0033] By setting the energy storage component and the damping component, the pressure of the fluid in the main body section can be regulated from the input port and the output port of the pipe to be tested, i.e., from the fluid input end and the fluid output end of the pipe to be tested. The synergistic effect of the energy storage component and the damping component realizes the processes of stable pressure and linear pressure regulation of the fluid in the main body section, and ensures the accuracy in the pipe explosion-proof test process. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the test system of the present application;

[0035] Figure 2 It is a schematic diagram of the structure of the workbench body of the present application;

[0036] Figure 3 It is a schematic diagram of the internal structure of the workbench body of the present application;

[0037] Figure 4 It is a pressure regulation change diagram of the test system of the present application under different conditions.

[0038] In the figure: 100, pipe to be tested; 200, energy storage component; 300, damping component; 400, control component; 500, detection component; 600, pump body component; 700, workbench body; 701, control interval; 702, test interval. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] Referring to Figures 1-4 , a gas pipe explosion-proof test system, the main body is arranged around the pipe to be tested, through the matching equipment to control the pressure of the liquid flowing in the pipe, so that the fluid pressure can fluctuate within the error range of the set value when it is stable and keep linear change in the process of pressure increasing and decreasing, thereby improving the stability of the pipe explosion-proof test value, preferably, the pressure regulating range of the test system is 0-20MPa.

[0041] Specifically, the pipe mentioned above includes a main body section and ports located at both ends of the main body section, the two ends of the port are respectively marked as input port and output port, wherein the input port is connected with the output end of the pump body component 600 through the input pipeline, preferably, the pump body component 600 is a hydraulic pump, the fluid enters the main body section from the input port through the power component, and the speed of the hydraulic pump can be adjusted, when the speed of the hydraulic pump changes, the fluid pressure flowing into the main body section changes correspondingly.

[0042] Further, the input pipeline is provided with an energy storage component 200, preferably, the energy storage component 200 is an accumulator, which is used to selectively convert the hydraulic energy of the output fluid of the hydraulic pump into compressed energy or potential energy for storage, and convert the stored compressed energy or potential energy into hydraulic energy to supplement the hydraulic energy of the fluid at the appropriate time to increase the fluid pressure, specifically, when the pressure of the output fluid of the hydraulic pump is too large, that is, the hydraulic energy of the output fluid is too large, the energy storage component 200 installed on the input pipeline can convert the excess hydraulic energy of the output fluid of the hydraulic pump into compressed energy or potential energy for storage, thereby reducing the pressure of the fluid entering the main body section from the input port, when the pressure of the output fluid of the hydraulic pump is too small, the accumulator can convert the pre-stored compressed energy or potential energy into hydraulic energy, thereby increasing the hydraulic energy of the fluid flowing into the main body section to improve the pressure of the fluid entering the main body section from the input port, that is, the fluid pressure entering the main body section from the input port is regulated by the energy storage component 200.

[0043] Further, the output port position of the pipe 100 is provided with a damping component 300, preferably, the damping component 300 is a damping valve riveted at the end of the main body section. By providing the damping valve at the end of the main body section, the flow rate of the fluid flowing out of the output port position can be controlled. By controlling the flow rate of the fluid, the pressure relief speed of the fluid in the output port can be regulated. Specifically, when the fluid pressure in the main body section is too high, the flow rate of the fluid flowing out of the output port increases, and correspondingly, the pressure relief speed of the main body section increases to achieve the purpose of rapid pressure relief. When the fluid pressure in the main body section is too low, the flow rate of the fluid flowing out of the output port decreases, and correspondingly, the pressure relief speed of the main body section decreases to slow down the decline of the fluid pressure in the main body section. By adjusting the pressure relief speed of the fluid in the main body section through the damping valve, the fluid in the main body section can quickly recover when deviating from the set value.

[0044] Further, the main body section of the pipe is also provided with a detection component 500 for measuring the fluid pressure in the main body section, preferably, the detection component 500 is a pressure sensor. The test system is also provided with a control component 400 electrically connected to the pressure sensor for receiving data from the pressure sensor and calculating the real-time fluid pressure in the main body section. Preferably, the control component 400 is a PLC controller, and the control component 400 is electrically connected to the hydraulic pump, i.e., the test system is controlled by the PLC test system. Specifically, after obtaining the fluid pressure data in the main body section, the control component 400 controls the action of the hydraulic pump based on the difference between the obtained pressure value and the set value, and cooperates with the energy storage component 200 and the damping component 300 to regulate the fluid pressure in the main body section. That is, the regulation of the hydraulic pump controls the initial output pressure of the test system fluid, and the cooperation of the energy storage component 200 and the damping component 300 realizes the rapid pressure stabilization and linear regulation process of the fluid pressure in the main body section.

[0045] Specifically, the fluid pressure regulation steps of the test system are as follows:

[0046] S0: According to the specifications of the pipe to be tested, set the preset value of the fluid pressure, the fluctuation value one of the preset value, the change preset value of the fluid pressure per unit time, and the fluctuation value two of the change preset value;

[0047] S1: The control component obtains the real-time value of the fluid pressure in the main body section based on the data transmitted by the pressure sensor, and calculates the difference between the real-time value and the preset value (i.e., real-time value-set value);

[0048] S2: When the difference is less than zero and the absolute value of the difference is greater than the fluctuation value one, execute S20;

[0049] When the difference is greater than zero and the absolute value of the difference is greater than fluctuation value one, S21 is executed;

[0050] S20: The pump component increases in speed, and a difference between a change value of real-time data and a change preset value (i.e., the change value of real-time data - the change preset value) is calculated;

[0051] When the difference is greater than zero and the absolute value of the difference is greater than fluctuation value two, S200 is executed;

[0052] When the difference is less than zero and the absolute value of the difference is greater than fluctuation value two, S201 is executed;

[0053] S200: The energy storage component stores part of the hydraulic energy of the fluid in the output port, and the damping component controls the fluid flow rate in the output port position to increase;

[0054] S201: The energy storage component releases the energy stored therein, and the damping component controls the fluid flow rate in the output port position to decrease;

[0055] S21: The pump component decreases in speed, and a difference between a change value of real-time data and a change preset value (i.e., the change value of real-time data - the change preset value) is calculated;

[0056] When the difference is greater than zero and the absolute value of the difference is greater than fluctuation value two, S210 is executed;

[0057] When the difference is greater than zero and the absolute value of the difference is less than fluctuation value two, S211 is executed;

[0058] S210: The damping component controls the fluid flow rate in the output port position to decrease;

[0059] S211: The damping component controls the fluid flow rate in the output port position to increase.

[0060] Further, the above test system is arranged in a workbench body 700. Specifically, the workbench body 700 is internally hollow to form an arrangement interval of the test system equipment, and the arrangement interval is divided into a control interval 701 and a test interval 702 by a vertically arranged partition plate. The control interval 701 is used to install control components such as a PLC controller and arrange related lines, and the workbench body 700 is provided with a control screen above the control interval 701, which is used to display the pressure information of the fluid in the test system and the working state of each component in the test system in real time, and the staff can manually operate through the screen. The above test interval 702 is used to install the pipe fittings to be tested, the power component, the energy storage component, and the damping component, which together with the control components in the control interval 701 constitute the test system. The workbench body 700 is provided with a glass plate above the test interval 702, which is used for the staff to observe the operation of the elements in the test system.

[0061] Further, the worktable body 700 is externally covered with a partition member for protecting the worktable body member and the equipment installed on the worktable body member.

[0062] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since the scope of the application will be defined by the appended claims and equivalents thereof.

Claims

1. A control method of a gas pipe explosion-proof test system, characterized in that: the test system is arranged around a pipe to be tested, and comprises: a pump body component connected to an input port of the pipe to be tested through an input pipeline; an energy storage component installed on the input pipeline and used for regulating fluid pressure output by the pump body component to the input port; and a damping component installed at an output port of the pipe to be tested and used for regulating the pressure relief speed of fluid at the output port position, so that the input end and output end fluid pressure of a main body section in the pipe to be tested are regulated by the energy storage component and the damping component respectively, to realize stable pressure and linear pressure regulation of fluid in the main body section; the control method comprises the following steps: S0: setting a preset value of fluid pressure, a fluctuation value one of the preset value, a change preset value of fluid pressure per unit time, and a fluctuation value two of the change preset value according to the specification of the pipe to be tested; S1: a control component acquires a real-time value of fluid pressure in the main body section according to data transmitted by a pressure sensor, and calculates a difference value between the real-time value and the preset value (i.e. real-time value-set value); S2: when the difference value is less than zero and the absolute value of the difference value is greater than the fluctuation value one, S20 is executed; when the difference value is greater than zero and the absolute value of the difference value is greater than the fluctuation value one, S21 is executed; S20: the rotation speed of the pump body component is increased, and a difference value between the change value of the real-time data and the change preset value (i.e. change value of real-time data-change preset value) is calculated; when the difference value is greater than zero and the absolute value of the difference value is greater than the fluctuation value two, S200 is executed; when the difference value is less than zero and the absolute value of the difference value is greater than the fluctuation value two, S201 is executed; S200: the energy storage component stores part of the hydraulic energy of fluid entering the output port, and the damping component controls the fluid flow speed at the output port position to increase; S201: the energy storage component releases the energy stored therein, and the damping component controls the fluid flow speed at the output port position to decrease; S21: the rotation speed of the pump body component is decreased, and a difference value between the change value of the real-time data and the change preset value (i.e. change value of real-time data-change preset value) is calculated; when the difference value is greater than zero and the absolute value of the difference value is greater than the fluctuation value two, S210 is executed; when the difference value is greater than zero and the absolute value of the difference value is less than the fluctuation value two, S211 is executed; S210: the damping component controls the fluid flow speed at the output port position to decrease; and S211: the damping component controls the fluid flow speed at the output port position to increase. The test system further comprises a detection component installed on the main body section, and a control component electrically connected to the detection component and the pump body component, wherein the control component controls the pump body component according to fluid pressure information transmitted by the detection component, to realize automatic pressure regulation of fluid in cooperation with the energy storage component and the damping component. The test system is controlled by a PLC system. The pressure regulation range of the test system is 0-20 MPa. The damping component is a damping valve. The test system further comprises a workbench body, and the workbench body forms an arrangement interval of the test system. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The control method of a gas pipe explosion test system according to claim 1, characterized in that: ​ 3. The control method of a gas pipe explosion test system according to claim 1 or 2, characterized in that: ​ 4. The control method of claim 1, wherein: ​ 5. The control method of claim 1, wherein: ​ 6. The control method of a gas pipe explosion test system according to claim 1 or 2, characterized in that: ​ 7. The control method of a gas pipe explosion test system according to claim 6, characterized in that: The arrangement interval in the workbench body is divided into a control interval and a test interval by a vertically arranged partition plate.

8. The control method of a gas pipe explosion test system according to claim 7, characterized in that: The workbench body is externally provided with a protection component.

9. The control method of claim 1, wherein: The pump body component is a hydraulic valve, and the fluid output pressure is controlled by controlling the blade rotating speed.

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