Valve high-temperature performance test system

Abstract

The utility model relates to a high-temperature performance testing system for a valve. The high-temperature performance testing system consists of a mold temperature controller, a valve life tester, a valve, an actuator, a pipe fitting and a nitrogen cylinder, a left flange blind plate and a right flange blind plate are arranged at the lower end of the valve, the mold temperature controller is connected with the flange blind plates through pipe fittings, and the actuator is installed at the upper end of the valve and connected with the tester. An oil storage tank is arranged at the top of the mold temperature controller and comprises an oil injection port and a nitrogen injection port, the oil injection port is connected with an oil return pump and connected with the left flange blind plate, and the nitrogen injection port is connected with a nitrogen cylinder. The oil recharging port is connected with the oil tank. The mold temperature controller is further connected with a cooling water circulation pipeline structure which comprises a cold water tank and a cold water pump and is connected with the mold temperature controller through a water outlet and a water inlet. The valve high-temperature performance test system provided by the utility model can simulate a high-temperature working environment and repeated opening and closing tests, and can effectively test the durability and reliability of the valve under a high-temperature condition.

Description

Technical Field

[0001] The utility model particularly relates to a valve high-temperature performance testing system. Background Art

[0002] High-temperature operating conditions are common in the petrochemical and coal chemical industries. Most valve manufacturers lack high-temperature testing capabilities. The high-temperature valves they design are often based on standards and previous experience, without actual testing capabilities. They rely solely on user feedback. Valve components have different thermal expansion coefficients. Once exposed to high-temperature conditions, internal components can easily expand faster than the housing, leading to valve core swell and the inability to open or close the valve. This can impact the safety of refining equipment and operators.

[0003] Therefore, this application aims to provide a technical means that can simulate high-temperature working conditions and perform actual testing on high-temperature valves to ensure the stability and reliability of the valves in high-temperature environments. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a valve high-temperature performance testing system to address the deficiencies of the above-mentioned existing technologies, which can simulate high-temperature working environments and repeated opening and closing tests, and effectively test the durability and reliability of valves under high-temperature conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A valve high-temperature performance test system, characterized in that it includes a mold temperature controller, a valve life tester, a valve, an actuator, pipe fittings, and a nitrogen cylinder. The lower end of the valve is provided with a left flange blind plate and a right flange blind plate that are symmetrically distributed with each other. The side of the mold temperature controller is provided with an oil outlet and an oil return port. The oil outlet is connected to the right flange blind plate through a pipe fitting, and the oil return port is connected to the left flange blind plate. The actuator is installed at the upper end of the valve and is connected to the valve life tester.

[0007] An oil storage tank is provided on the top of the mold temperature controller. The top of the oil storage tank is provided with an oil filling port, a safety valve, a vent valve, and a nitrogen injection port. The oil filling port is connected to an oil return pump through a pipe fitting. The oil return pump is connected to the left flange blind plate through a pipe fitting. An oil replenishment port is provided on the upper side of the mold temperature controller. The oil storage tank is connected to the oil replenishment port through a pipe fitting. The nitrogen injection port is connected to the nitrogen bottle through a pipe fitting.

[0008] The mold temperature controller is connected to a cooling water circulation pipeline structure, which includes a cold water tank and a cold water pump arranged above the cold water tank. A water outlet and a water inlet are also provided on the side of the mold temperature controller. The cold water tank is connected to the water outlet through a pipe fitting, and the cold water pump is connected to the water inlet through a pipe fitting.

[0009] Using the above technical solution, the valve high-temperature performance testing system integrates components such as a mold temperature controller, a valve life tester, valves, actuators, pipe fittings, and nitrogen cylinders. During operation, the mold temperature controller heats and circulates oil, delivering the hot oil through pipe fittings into the valve interior to simulate a high-temperature operating environment. The valve life tester uses an actuator to repeatedly open and close the valve to test its durability under high-temperature conditions. Simultaneously, a nitrogen cylinder injects nitrogen into the oil storage tank to regulate the oil pressure during testing, ensuring that testing conditions are as consistent as possible with actual operating conditions. Furthermore, the valve high-temperature performance testing system is equipped with a cooling water circulation mechanism, using a cold water tank and a cold water pump to control the mold temperature controller temperature to prevent overheating. After testing, a return oil pump returns the oil in the valve to the oil storage tank for subsequent use. This technical solution simulates high-temperature operating environments and repeated opening and closing tests, effectively testing the durability and reliability of valves under high-temperature conditions.

[0010] The above-mentioned valve high-temperature performance test system can be further configured as follows: the mold temperature controller also includes a high-temperature resistant oil pump and a heating circulation control system. The high-temperature resistant oil pump is connected to the oil outlet, oil return port, and oil replenishment port through pipes respectively, and the heating circulation control system can heat the oil in the high-temperature resistant oil pump.

[0011] With the above technical solution, a high-temperature resistant oil pump serves as the power source for oil circulation. It can withstand continuous operation in high-temperature environments and ensure stable circulation of the oil during valve testing. The high-temperature resistant oil pump is connected to the oil outlet, oil return port, and oil replenishment port through pipes, respectively, to achieve the circulation of oil between the mold temperature controller, valve, and oil storage tank. The heating circulation control system is used to heat the oil in the high-temperature resistant oil pump to simulate the actual conditions of the valve in a high-temperature working environment. This technical solution improves the automation level and testing efficiency of the valve high-temperature performance testing system. Through the precise control of the heating circulation control system, the oil temperature can be quickly adjusted and stably maintained, reducing manual intervention and waiting time, and improving testing efficiency. At the same time, the stable operation of the high-temperature resistant oil pump also reduces the complexity and cost of system maintenance, making the testing process smoother and more efficient.

[0012] The above-mentioned valve high temperature performance test system can be further configured as follows: at least one set of sewage outlets is provided at the bottom of the oil storage tank, and the sewage outlets are connected to sewage valves through pipes.

[0013] With this technical solution, during long periods of high-temperature oil circulation, tiny particles, metal debris, or other impurities can become mixed into the oil and settle at the bottom of the tank. Opening the drain valve regularly removes these impurities and sediment from the tank bottom, maintaining oil cleanliness and extending the life of the valve and test system.

[0014] The above-mentioned valve high temperature performance test system can be further configured as follows: pressure gauges are provided at the oil outlet, oil return port and oil replenishment port of the mold temperature controller.

[0015] By adopting the above technical solution, the pressure at both ends of the valve can be observed simultaneously. When the tested valve is closed, the output pressure gauge of the equipment displays the pressure normally, and the input pressure gauge should drop to 0 pressure to observe whether the valve is leaking internally.

[0016] The above-mentioned valve high temperature performance test system can be further configured as follows: the valve life tester includes a control circuit, the control circuit includes a 24V power supply, the 24V power supply is connected in series with an open position indicator light, the open position indicator light is connected in series with an open feedback relay, the open position indicator light is connected in parallel with a related position indicator light, the closed position indicator light is connected in series with a related feedback relay, the open position indicator light is also connected in parallel with an intelligent time relay, and the intelligent time relay is connected in series with the actuator.

[0017] Using this technical solution, the delay output is set on the intelligent time relay. When the set delay expires, the output contacts close, connecting the output signal to the 24V power supply. This power signal is then transmitted to the actuator, causing the valve to open. A 24V power supply is connected in series between the fully open indicator and the open feedback relay on the valve life tester. When the valve is fully open, the open feedback relay contacts close, providing a pathway for the fully open signal, and the fully open indicator illuminates, allowing the valve to be seen from a distance. The delay continues until the set time, at which point the output contacts open, disconnecting the 24V output signal, and the actuator automatically closes without the valve opening signal. The closed feedback relay contacts close, illuminating the fully closed indicator.

[0018] The above-mentioned valve high-temperature performance test system can be further configured as follows: the actuator is an electric actuator, and the electric actuator is connected to a 380V power supply or a 220V power supply.

[0019] The above valve high temperature performance test system can be further configured as follows: the actuator is a pneumatic actuator, the pneumatic actuator is connected to a 0.4-0.7 MPa driving air source, and the pneumatic actuator is connected in series with a 24V solenoid valve and a valve position switch.

[0020] When the electric or pneumatic actuator receives a 24V power signal from the valve life tester, it drives the valve to open, and the open feedback relay contacts close, providing the valve life tester with an open position signal. When the 24V power is disconnected, the valve drives the valve to close, and the close feedback relay contacts close, providing the valve life tester with a closed position signal. This reciprocating motion continues until manually stopped.

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall layout of the system according to an embodiment of the present utility model;

[0023] Figure 2 This is a panel diagram of a valve life tester according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of a control circuit according to an embodiment of the present utility model;

[0025] Figure 4 The valve and actuator structure of the embodiment of the utility model are schematically shown. Figure 1 ;

[0026] Figure 5 The valve and actuator structure of the embodiment of the utility model are schematically shown. Figure 2 ;

[0027] Figure 6 This is a schematic cross-sectional view of a valve according to an embodiment of the present utility model;

[0028] Figure 7 This is a partial cross-sectional schematic diagram of a valve according to an embodiment of the present utility model.

[0029] Label notes: mold temperature controller a, oil outlet a1, oil return port a2, oil replenishment port a3, water outlet a4, water inlet a5; valve life tester b; valve c, left flange blind plate c1, right flange blind plate c2; actuator d; nitrogen bottle e; oil storage tank f, oil filling port f1, nitrogen injection port f2, drain valve f3, safety valve f4, vent valve f5; oil return pump g; cold water tank 1, cold water pump 2, open position indicator light 3, open feedback relay 4, close position indicator light 5, close feedback relay 6, intelligent time relay 7. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figures 1 to 7The high-temperature performance test system for valve C shown in the figure includes a mold temperature controller a, a valve C life tester b, valve C, an actuator d, pipe fittings, and a nitrogen cylinder e. The lower end of valve C is provided with a left flange blind plate c1 and a right flange blind plate c2 that are symmetrically distributed with each other. The side of the mold temperature controller a is provided with an oil outlet a1 and an oil return port a2. The oil outlet a1 is connected to the right flange blind plate through a pipe fitting, and the oil return port a2 is connected to the left flange blind plate. The actuator d is installed at the upper end of valve C and is connected to the valve C life tester b.

[0032] An oil storage tank f is installed on top of the mold temperature controller a. It features an oil filling port f1, a safety valve f4, a vent valve f5, and a nitrogen inlet f2. Oil filling port f1 is connected to an oil return pump g via a pipe, which is then connected to the left blind flange plate c1 via a pipe. An oil replenishment port a3 is installed on the top side of the mold temperature controller a, connected to the oil filling port a3 via a pipe. Nitrogen inlet f2 is also connected to a nitrogen cylinder e via a pipe. Nitrogen cylinder e can boost the pressure in the oil storage tank f to 1.6 MPa.

[0033] The mold temperature controller a is connected to a cooling water circulation pipeline structure, which includes a cold water tank 1 and a cold water pump 2 arranged above the cold water tank 1. The side of the mold temperature controller a is also provided with a water outlet a4 and a water inlet a5. The cold water tank 1 is connected to the water outlet a4 through a pipe fitting, and the cold water pump 2 is connected to the water inlet a5 through a pipe fitting.

[0034] Mold temperature controller a also includes a high-temperature oil pump and a heating circulation control system. The high-temperature oil pump is connected to the oil outlet a1, oil return port a2, and oil replenishment port a3 via pipes. The heating circulation control system heats the oil within the high-temperature oil pump. Mold temperature controller a operates at a delivery pressure of 0.4 MPa and can reach temperatures up to 300°C, with higher temperatures available on request. As the power source for oil circulation, the high-temperature oil pump is designed to withstand continuous operation in high-temperature environments, ensuring stable oil circulation during the testing of valve c. The high-temperature oil pump is connected to the oil outlet a1, oil return port a2, and oil replenishment port a3 via pipes, enabling oil circulation between mold temperature controller a, valve c, and the oil storage tank f. The heating circulation control system heats the oil within the high-temperature oil pump to simulate the actual conditions of valve c under high-temperature operating conditions. This technical solution improves the automation and efficiency of the high-temperature performance testing system for valve c. The precise control of the heating circulation control system allows for rapid adjustment and stable maintenance of the oil temperature, reducing manual intervention and waiting time, and improving testing efficiency. At the same time, the stable operation of the high-temperature resistant oil pump also reduces the complexity and cost of system maintenance, making the testing process smoother and more efficient.

[0035] The bottom of oil tank f is equipped with a drain port, connected to drain valve f3 via a pipe. During prolonged, high-temperature oil circulation, tiny particles, metal debris, and other impurities can become mixed with the oil and settle at the bottom of tank f. By opening drain valve f3, impurities and sediment can be regularly removed from the bottom of tank f, maintaining oil cleanliness and extending the service life of valve c and the test system.

[0036] Pressure gauges are installed at the oil outlet a1, oil return port a2, and oil replenishment port a3 of the mold temperature controller a. The pressures at both ends of valve c can be observed simultaneously. When the test valve c is closed, the output pressure gauge displays normal pressure, while the input pressure gauge should drop to zero pressure. This allows for observation of internal leakage in valve c.

[0037] Valve C life tester B includes a control circuit, which includes a 24V power supply. This 24V power supply is connected in series with an open position indicator 3, which is then connected in series with an open feedback relay 4. This is connected in parallel with a position indicator 5, and in series with a closed position indicator 5. Furthermore, this position indicator 5 is connected in parallel with a feedback relay 6. Furthermore, this position indicator 3 is connected in parallel with an intelligent time relay 7, which is then connected in series with actuator d. After the set delay output of intelligent time relay 7 expires, the output contacts close, connecting the 24V power supply. This power signal is then transmitted to actuator d, causing valve C to open. A 24V power supply is connected in series between the open position indicator 3 and the open feedback relay 4 on valve life tester B. When valve C is fully open, the open feedback relay 4 contacts close, signaling the full open position of valve C. The open position indicator 3 illuminates, making it visible from a distance that valve C has opened. The delay continues until the set time, at which point the output contacts open, disconnecting the 24V output signal. Actuator d, deactivating the valve open signal, automatically closes. The closed feedback relay 6 contacts close, illuminating the closed position indicator 5.

[0038] When the actuator d is an electric actuator d, the electric actuator d is connected to a 380V power supply or a 220V power supply.

[0039] When the actuator d is a pneumatic actuator d, the pneumatic actuator d is connected to a 0.4-0.7Mpa driving air source, and the pneumatic actuator d is connected in series with a 24V solenoid valve and a valve position switch.

[0040] When electric actuator d or pneumatic actuator d receives a 24V power signal from valve c life tester b, it drives valve c to open. Simultaneously, the open feedback relay 4 contacts close, providing a fully open signal to valve c life tester b. When the 24V power is disconnected, it drives valve c to close. Simultaneously, the close feedback relay 6 contacts close, providing a fully closed signal to the tester. This reciprocating motion continues until manually stopped.

[0041] This embodiment integrates components such as a mold temperature controller a, a valve c life tester b, a valve c, an actuator d, pipe fittings, and a nitrogen bottle e. During operation, the mold temperature controller a heats and circulates the oil, and sends the hot oil into the interior of the valve c through the pipe fittings to simulate a high-temperature working environment. The valve c life tester b repeatedly opens and closes the valve c through the actuator d to test the durability of the valve c under high-temperature conditions. At the same time, the nitrogen bottle e injects nitrogen into the oil storage tank f to adjust the oil pressure during the test so that the test conditions are as consistent as possible with the actual working environment. In addition, the valve c high-temperature performance test system is also equipped with a cooling water circulation structure, which controls the temperature of the mold temperature controller a through the cold water tank 1 and the cold water pump 2 to prevent overheating. After the test is completed, the return oil pump g can pump the oil in the valve c back to the oil storage tank f for subsequent use.

[0042] More specifically, mold temperature controller a is responsible for heating the thermal oil. A high-temperature oil pump provides the base pressure, connected to valve c via a pipe fitting. The oil is then pumped to valve c, where it returns to mold temperature controller a through oil return port a2 for recirculation and heating. When the required pressure exceeds the pressure of the high-temperature oil pump, nitrogen can be added to the oil reservoir f to boost the pressure. If the equipment pressure is too high, the vent valve at the top of the oil reservoir f can be opened. The vent valve outlet is connected with a hose and vented to the equipment base. Any mixed oil spray can be collected with an oil drum. If the oil level in the pipe fitting connected to oil return port a2 is insufficient, the oil replenishment valve at the bottom of the oil reservoir f can be opened to replenish thermal oil to the mold temperature controller a through oil replenishment port a3. Mold temperature controller a has a water inlet a5 at its bottom. Cold water from the cold water tank 1 is fed into the water inlet a5 of the mold temperature controller a via a cold water pump 2 to cool the equipment. The water outlet a4 of the mold temperature controller a is connected to the cold water tank 1, forming a circuit. When the equipment is shut down and valve c needs to be replaced, shut down the equipment and wait until the oil temperature drops to room temperature. Then fully open valve c for testing. The external oil pump can pump the remaining oil in the inner cavity of valve c and the pipeline to the oil storage tank f to avoid waste.

[0043] The opening and closing of valve C are carried out by actuator D connected to the upper end of valve C. The control of actuator D is controlled by valve C life tester B which outputs valve opening and closing signals. When valve C is fully opened and fully closed, actuator D outputs feedback signals accordingly. The corresponding open and closed indications of valve C life tester B form a loop, and the open position indicator light 3 and the closed position indicator light 5 light up accordingly. The actual position of valve C can be seen from a distance, avoiding high temperature burns at close range.

[0044] By replacing the left flange blind plate c1 or the right flange blind plate c2 and the corresponding valve c, high-temperature valves c of different calibers can be tested. The actuator d can be electric or pneumatic. The system is flexible and can test high-temperature valves c of various specifications with less investment.

Claims

1. Valve high temperature performance test system, characterized by: It includes a mold temperature controller, a valve life tester, a valve, an actuator, pipe fittings and a nitrogen cylinder. The lower end of the valve is provided with a left flange blind plate and a right flange blind plate that are symmetrically distributed with each other. The side of the mold temperature controller is provided with an oil outlet and an oil return port. The oil outlet is connected to the right flange blind plate through a pipe fitting, and the oil return port is connected to the left flange blind plate. The actuator is installed at the upper end of the valve and connected to the valve life tester. An oil storage tank is provided on the top of the mold temperature controller. The top of the oil storage tank is provided with an oil filling port, a safety valve, a vent valve, and a nitrogen injection port. The oil filling port is connected to an oil return pump through a pipe fitting. The oil return pump is connected to the left flange blind plate through a pipe fitting. An oil replenishment port is provided on the upper side of the mold temperature controller. The oil storage tank is connected to the oil replenishment port through a pipe fitting. The nitrogen injection port is connected to the nitrogen bottle through a pipe fitting. The mold temperature controller is connected to a cooling water circulation pipeline structure, which includes a cold water tank and a cold water pump arranged above the cold water tank. A water outlet and a water inlet are also provided on the side of the mold temperature controller. The cold water tank is connected to the water outlet through a pipe fitting, and the cold water pump is connected to the water inlet through a pipe fitting.

2. The valve high temperature performance testing system according to claim 1, characterized in that: The mold temperature controller also includes a high-temperature resistant oil pump and a heating circulation control system. The high-temperature resistant oil pump is connected to the oil outlet, oil return port, and oil replenishment port through pipes respectively. The heating circulation control system can heat the oil in the high-temperature resistant oil pump.

3. The valve high temperature performance testing system according to claim 2, characterized in that: At least one set of sewage outlets is provided at the bottom of the oil storage tank, and the sewage outlets are connected to sewage valves through pipe fittings.

4. The valve high temperature performance testing system according to claim 3, characterized in that: Pressure gauges are provided at the oil outlet, oil return port and oil replenishment port of the mold temperature controller.

5. The valve high temperature performance testing system according to claim 4, characterized in that: The valve life tester includes a control circuit, which includes a 24V power supply. The 24V power supply is connected in series with an open position indicator light, which is connected in series with an open feedback relay. The open position indicator light is connected in parallel with a related position indicator light, and the closed position indicator light is connected in series with a related feedback relay. The open position indicator light is also connected in parallel with an intelligent time relay, and the intelligent time relay is connected in series with an actuator.

6. The valve high temperature performance testing system according to claim 5, characterized in that: The actuator is an electric actuator, which is connected to a 380V power supply or a 220V power supply.

7. The valve high temperature performance testing system according to claim 5, characterized in that: The actuator is a pneumatic actuator connected to a 0.4-0.7 MPa driving air source, and is connected in series with a 24V solenoid valve and a valve position switch.

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