A hot test system and test method for shore-to-ship steam transport device

Abstract

The present invention relates to a hot state test system and test method for a shore-to-ship steam transmission device, including high-temperature and high-pressure steam. The outlet of the high-temperature and high-pressure steam is connected to a main pipe, and the outlet of the main pipe branches into multiple branch pipes. Each branch pipe is connected to a device under test through an inlet stop valve, an inlet electric valve, a pressure transmitter, an inlet steam temperature transmitter, a regulating valve, a silencer, etc., which can conveniently complete the hot state test work of the device under test, so as to conduct tests before actual operation and verify the reliability of the device under high-temperature and high-pressure conditions. The temperature and pressure of the system are adjusted to certain parameters for demonstration verification and reliability tests to ensure the reliability of the device during use.

Description

Technical Field

[0001] The present invention relates to the technical field of test devices, in particular to a hot state test system and a test method for a shore-to-ship steam transmission device. Background Art

[0002] When a ship is berthing, sometimes it is necessary to transport steam from the shore side to the ship through a shore-to-ship steam transmission device, which can ensure the flexibility and safety of steam transmission between the shore and the ship. In addition, components such as steam control valves and steam switches are also applied.

[0003] In the prior art, components such as shore-to-ship steam transmission devices, steam control valves, and steam switches are directly applied. Due to the special application scenarios, their working environment is high temperature and high pressure. The degree of high temperature and high pressure resistance of the equipment is obtained through theoretical calculations and directly applied to the actual working scenarios, resulting in poor stability and unreliable guarantee of the equipment service life. Summary of the Invention

[0004] The applicant of the present invention aims at the above-mentioned disadvantages in the existing production technology and provides a hot state test system and a test method for a shore-to-ship steam transmission device, so as to conduct tests before actual operation, verify the reliability of the device under high temperature and high pressure conditions, adjust the temperature and pressure of the system to certain parameters, conduct demonstration verification and reliability tests, and ensure the reliable use of the equipment.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A hot state test system for a shore-to-ship steam transmission device includes high-temperature and high-pressure steam. The outlet of the high-temperature and high-pressure steam is connected to a main pipe, and the outlet of the main pipe branches into multiple branch pipes.

[0007] Among them, on the first branch pipe, a first inlet stop valve, a first inlet electric valve, a first pressure transmitter, a first inlet steam temperature transmitter, and a device under test are connected in series in sequence. At the outlet of the device under test, a first outlet steam temperature transmitter, a first control valve, and a first silencer are connected in series in sequence through a first outlet pipe. The output end of the first silencer is connected to the atmosphere.

[0008] Among them, on the second branch pipe, a second inlet stop valve, a second inlet electric valve, a second pressure transmitter, a second inlet steam temperature transmitter, and a device under test are connected in series in sequence. At the outlet of the device under test, a flow meter, a third pressure transmitter, a second outlet steam temperature transmitter, a second control valve, and a second silencer are connected in series in sequence through a second outlet pipe. The output end of the second silencer is connected to the atmosphere.

[0009] On the third branch pipe, a third inlet stop valve, a third inlet electric valve, a third pressure transmitter, a third inlet steam temperature transmitter, and the device under test are connected in series in sequence. At the outlet of the device under test, a fourth pressure transmitter, a third outlet steam temperature transmitter, a switch valve, a third regulating valve, and a third silencer are connected in series through a third outlet pipe in sequence. The output end of the third silencer is connected to the atmosphere.

[0010] Its further technical solution lies in that:

[0011] The device under test is a universal high-temperature and high-pressure steam shore-to-ship conveying device, a steam regulating valve, or a steam switch.

[0012] The universal high-temperature and high-pressure steam shore-to-ship conveying device is connected in the first branch pipeline, the steam regulating valve is connected in the second branch pipeline, and the steam switch is connected in the third branch pipeline.

[0013] Both ends of the universal high-temperature and high-pressure steam shore-to-ship conveying device, the steam regulating valve, and the steam switch are provided with pipe orifices connected to the pipeline.

[0014] A first drain pipe is connected to the first branch pipe between the first inlet steam temperature transmitter and the device under test, and a first drain valve and a second drain valve are connected in series on the first drain pipe.

[0015] A second drain pipe is connected to the second branch pipe between the second inlet steam temperature transmitter and the device under test, and a third drain valve and a fourth drain valve are connected in series on the second drain pipe.

[0016] A third drain pipe is connected to the third branch pipe between the third inlet steam temperature transmitter and the device under test, and a fifth drain valve and a sixth drain valve are connected in series on the third drain pipe.

[0017] A test method for a hot test system of a shore-to-ship steam conveying device includes the following operation steps:

[0018] First, connect the device to be tested into the system;

[0019] State before test start:

[0020] Close all inlet stop valves, close all inlet electric valves, close all drain valves, and open all regulating valves;

[0021] Secondly, carry out system heating:

[0022] The operations in each branch pipe are the same.

[0023] The specific operation in one branch pipe is as follows:

[0024] Open the inlet stop valve. At this time, slowly open the inlet electric valve. The steam is discharged from the silencer behind the regulating valve. Observe the system temperature through the outlet steam temperature transmitter at the outlet. By adjusting the opening of the inlet electric valve, control the system temperature rise within 5 - 10 °C / min. During the heating process, open the drain valve to drain the water inside the device. After the draining is completed, close it or keep it slightly open. Determine the system temperature based on the reading of the outlet steam temperature transmitter.

[0025] Then boost the system pressure:

[0026] When the system temperature reaches the preset requirement, start the pressure boosting operation. Slowly close the regulating valve remotely. Gradually increase the pressure of the device system according to the opening of the regulating valve. When the system reaches the set pressure, keep the opening of the regulating valve unchanged. At this time, start the motion test.

[0027] Then start the performance test of the device under test:

[0028] Test the motion test, regulation performance test or the test of internal and external leakage of the device under test.

[0029] Maintain the temperature and pressure during the test:

[0030] Finally, stop the machine after the test is completed:

[0031] When all test items are completed, start the shutdown operation of the system. First, slowly close the electric valve to cut off the steam supply. Then, slowly open the regulating valve to release the internal pressure of the system. Subsequently, manually open the drain valve; return the device under test to the initial position; check the components when the system temperature drops below 40 °C.

[0032] When the device under test is a universal high-temperature and high-pressure steam shore-to-ship conveying device, conduct a motion test:

[0033] When the system pressure rises to the test pressure and there is no abnormality in the jogging motion, start to test the tooling manually. Slowly move the on-board device at a slow speed gear. During this period, observe whether there is steam leakage at the movable joints of the device, and whether there are any abnormal deformations and motion jams in the mechanical structure and pipeline system.

[0034] As a further improvement of the above technical solution:

[0035] Record the motion time each time through the PLC as the calculation input for subsequent calculation of the motion displacement, and record the temperature, pressure, position, and reaction force data during the operation of the device in real time through the PLC system.

[0036] When the device under test is a steam regulating valve, conduct a regulation performance test:

[0037] Under the set pressure difference, by setting different opening degrees of the tested steam control valve, measuring the flow rate in real time through a flow meter, recording the opening degree of the tested steam control valve and the real-time value of the flow meter, the opening degree - flow rate curve of the valve is obtained;

[0038] When the device under test is a steam switch, an internal and external leakage test is carried out:

[0039] After the system temperature reaches the preset requirement, start pressurizing the tested steam switch. First, close the inlet electric switch valve and the inlet electric valve, close the outlet switch valve and the control valve. At this time, there is no pressure inside the system. Then open the inlet electric switch valve, slowly adjust the control valve, and control the internal pressure of the valve system to gradually rise to the set value. When the internal pressure of the steam switch reaches the set pressure, observe the steam leakage situation outside the steam switch. If there is external leakage, water vapor and white smoke will emerge, otherwise it is qualified;

[0040] After the external leakage test of the steam switch is completed, close the inlet electric valve and the inlet control valve, close the tested steam switch, then open the control valve and the switch valve. Subsequently, after opening the inlet electric valve, slowly open the control valve to adjust the pressure in front of the steam switch to the set pressure value. The steam leakage observation port is set at the outlet of the steam switch. At this time, open the valve of the steam leakage observation port and check the steam leakage situation through the observation port. If white smoke or water vapor emerges, it indicates that there is internal leakage in the valve, otherwise it is qualified.

[0041] The beneficial effects of the present invention are as follows:

[0042] The structure of the present invention is compact and reasonable, and the operation is convenient. Through the design of the entire system, the temperature and pressure of the on - ship device system can be conditioned within the set point range by steam. During the whole process, only remote monitoring through remote - transmission instruments is required while operating the electric valves, thereby adjusting the temperature and pressure of the entire system.

[0043] In addition to being used for the hot - state test of the steam shore - ship conveying device, the present invention can also be widely used to adjust other systems that need to establish a certain temperature and pressure.

[0044] The present invention can be used to simulate the state of the device when conveying steam at a certain temperature and pressure. Brief Description of the Drawings

[0045] Figure 1 It is a structural schematic diagram of the overall system of the present invention.

[0046] Figure 2 It is a structural diagram of the test system of the universal high - temperature and high - pressure steam shore - ship conveying device of the present invention.

[0047] Figure 3 It is a structural diagram of the test system of the steam control valve of the present invention.

[0048] Figure 4 This is the structural diagram of the test system for the steam switch of the present invention.

[0049] Wherein: 1, high-temperature and high-pressure steam; 2, main pipe; 3, first branch pipe; 4, first inlet stop valve; 5, first inlet electric valve; 6, first pressure transmitter; 7, first inlet steam temperature transmitter; 8, universal high-temperature and high-pressure steam shore-to-ship conveying device; 9, first drain pipe; 10, first drain valve; 11, second drain valve; 12, first outlet steam temperature transmitter; 13, first outlet pipe; 14, first regulating valve; 15, first silencer; 16, second branch pipe; 17, second inlet stop valve; 18, second inlet electric valve; 19, second pressure transmitter; 20, second inlet steam temperature transmitter; 21, second drain pipe; 22, third drain valve; 23, fourth drain valve; 24, steam regulating valve; 25, flowmeter; 26, third pressure transmitter; 27, second outlet steam temperature transmitter; 28, second regulating valve; 29, second silencer; 30, second outlet pipe; 31, third branch pipeline; 32, third inlet stop valve; 33, third inlet electric valve; 34, third pressure transmitter; 35, third inlet steam temperature transmitter; 36, third drain pipe; 37, fifth drain valve; 38, sixth drain valve; 39, steam switch; 40, fourth pressure transmitter; 41, third outlet steam temperature transmitter; 42, switch valve; 43, third regulating valve; 44, third silencer; 45, third outlet pipe. Specific embodiments

[0050] The following will describe the specific embodiments of the present invention with reference to the accompanying drawings.

[0051] As Figures 1-4 shown, the hot-state test system of the shore-to-ship steam conveying device of this embodiment includes high-temperature and high-pressure steam 1. The outlet of the high-temperature and high-pressure steam 1 is connected to the main pipe 2, and the outlet of the main pipe 2 branches into multiple branch pipes.

[0052] Among them, on the first branch pipe 3, a first inlet stop valve 4, a first inlet electric valve 5, a first pressure transmitter 6, a first inlet steam temperature transmitter 7 and the device to be tested are connected in series in sequence. At the outlet of the device to be tested, a first outlet steam temperature transmitter 12, a first regulating valve 14 and a first silencer 15 are connected in series in sequence through the first outlet pipe 13, and the output end of the first silencer 15 is connected to the atmosphere.

[0053] On the second branch pipe 16, a second inlet stop valve 17, a second inlet electric valve 18, a second pressure transmitter 19, a second inlet steam temperature transmitter 20 and the device under test are connected in series in sequence. At the outlet of the device under test, a flow meter 25, a third pressure transmitter 26, a second outlet steam temperature transmitter 27, a second regulating valve 28 and a second silencer 29 are connected in series in sequence through a second outlet pipe 30. The output end of the second silencer 29 is connected to the atmosphere;

[0054] On the third branch pipe 31, a third inlet stop valve 32, a third inlet electric valve 33, a third pressure transmitter 34, a third inlet steam temperature transmitter 35 and the device under test are connected in series in sequence. At the outlet of the device under test, a fourth pressure transmitter 40, a third outlet steam temperature transmitter 41, a switching valve 42, a third regulating valve 43 and a third silencer 44 are connected in series in sequence through a third outlet pipe 45. The output end of the third silencer 44 is connected to the atmosphere;

[0055] The device under test is a universal high-temperature and high-pressure steam shore-to-ship conveying device 8, a steam regulating valve 24 or a steam switch 39.

[0056] The universal high-temperature and high-pressure steam shore-to-ship conveying device 8 is connected in the first branch pipeline 3, the steam regulating valve 24 is connected in the second branch pipeline 16, and the steam switch 39 is connected in the third branch pipeline 31.

[0057] Both ends of the universal high-temperature and high-pressure steam shore-to-ship conveying device 8, the steam regulating valve 24 and the steam switch 39 are provided with pipe orifices connected to the pipeline.

[0058] A first drain pipe 9 is connected to the first branch pipe 3 between the first inlet steam temperature transmitter 7 and the device under test. A first steam trap 10 and a second steam trap 11 are connected in series on the first drain pipe 9.

[0059] A second drain pipe 21 is connected to the second branch pipe 16 between the second inlet steam temperature transmitter 20 and the device under test. A third steam trap 22 and a fourth steam trap 23 are connected in series on the second drain pipe 21.

[0060] A third drain pipe 36 is connected to the third branch pipe 31 between the third inlet steam temperature transmitter 35 and the device under test. A fifth steam trap 37 and a sixth steam trap 38 are connected in series on the third drain pipe 36.

[0061] The test method of the hot state test system of the shore-to-ship steam conveying device in this embodiment includes the following operation steps:

[0062] First, connect the device to be tested into the system;

[0063] State before test start:

[0064] Close all inlet stop valves, all inlet motorized valves, all drain valves, and open all regulating valves;

[0065] Secondly, perform system warm-up:

[0066] The operations in each branch pipe are the same.

[0067] The specific operation in one of the branch pipes is as follows:

[0068] Open the inlet stop valve. At this time, slowly open the inlet motorized valve. Steam is discharged from the silencer behind the regulating valve. Observe the system temperature through the outlet steam temperature transmitter at the outlet. Adjust the system temperature rise to 5 - 10 °C / min by adjusting the opening of the inlet motorized valve. Open the drain valve during the warm-up process to drain the water inside the device. After the draining is completed, close it or keep it slightly open. Determine the system temperature based on the reading of the outlet steam temperature transmitter.

[0069] Then, perform system pressure increase:

[0070] When the system temperature reaches the preset requirement, start the pressure increase operation. Slowly close the regulating valve remotely. Gradually increase the pressure of the device system as the opening of the regulating valve decreases. When the system reaches the set pressure, keep the opening of the regulating valve unchanged. At this time, start the motion test.

[0071] Then, start the performance test of the device under test:

[0072] Test the motion test, adjustment performance test, or internal and external leakage test of the device under test.

[0073] Maintain the temperature and pressure during the test:

[0074] Finally, stop the machine after the test is completed:

[0075] When all test items are completed, start the shutdown operation of the system. First, slowly close the motorized valve to cut off the steam supply. Then, slowly open the regulating valve to release the internal pressure of the system. Subsequently, manually open the drain valve; return the device under test to its initial position; check the components when the system temperature drops below 40 °C.

[0076] When the device under test is the universal high-temperature and high-pressure steam shore-to-ship transfer device 8, perform the motion test:

[0077] When the system pressure rises to the test pressure and there is no abnormality in the jogging motion, start to manually operate the test fixture to slowly move the on-board device at a slow speed. During this period, observe whether there is steam leakage at the movable joints of the device, and whether there are any abnormal deformations and motion jams in the mechanical structure and pipeline system.

[0078] The PLC records the movement time of each time as the input for the subsequent calculation of the movement displacement, and the PLC system records the temperature, pressure, position, and reaction force data of the device in real time during operation;

[0079] When the equipment under test is a steam regulating valve, conduct a regulating performance test:

[0080] Under the set pressure difference, by setting different openings of the tested steam regulating valve, measuring the flow rate in real time through the flow meter, recording the opening of the tested steam regulating valve and the real-time value of the flow meter, the valve opening-flow curve is obtained;

[0081] When the device under test is a steam switch 39, perform internal and external leakage tests:

[0082] When the system temperature reaches the preset requirement, start pressurizing the tested steam switch 39. First, close the inlet electric switch valve and the inlet electric valve, close the outlet switch valve and the regulating valve. At this time, there is no pressure inside the system. Then open the inlet electric switch valve, slowly adjust the regulating valve, and control the valve system to gradually increase the pressure to the set value. When the steam switch 39 reaches the set pressure, observe the steam leakage outside the steam switch 39. If there is leakage, water vapor and white smoke will come out. Otherwise, it is qualified.

[0083] After the external leakage test of the steam switch 39 is completed, close the inlet electric valve and the inlet regulating valve, close the steam switch 39 being tested, and then open the regulating valve and the switch valve. After opening the inlet electric valve, slowly open the regulating valve to adjust the pressure before the valve of the steam switch 39 to the set pressure value. The steam leakage observation port is set at the outlet of the steam switch 39. At this time, open the valve of the steam leakage observation port and use the observation port to check the steam leakage. If white smoke or water vapor comes out, it means that the valve has internal leakage, otherwise it is qualified.

[0084] Embodiment 1:

[0085] When conducting a hot test of the universal high-temperature and high-pressure steam shore-to-ship transfer device 8, the specific steps are as follows:

[0086] Step 1: Status before the test starts:

[0087] The No. 1 inlet stop valve 4 is closed, the No. 1 inlet electric valve 5 is closed, the No. 1 steam trap 10 and the No. 2 steam trap 11 are closed, and the No. 1 regulating valve 14 is opened;

[0088] Step 2: Control system temperature rise:

[0089] Open the No. 1 inlet stop valve 4. At this time, slowly open the No. 1 inlet motorized valve 5. The steam is transported through the universal high-temperature and high-pressure steam shore-to-ship delivery device 8, and then discharged from the No. 1 silencer 15 after passing through the No. 1 regulating valve 14. Observe the temperature of the system through the No. 1 outlet steam temperature transmitter 12 at the outlet; adjust the temperature rise rate of the system to 5 - 10 °C / min by adjusting the opening of the No. 1 inlet motorized valve 5. During the heating process, open the No. 1 steam trap 10 and the No. 2 steam trap 11 to drain the water inside the device. After the water drainage is completed, close them or keep them slightly open, and determine the system temperature through the reading of the No. 1 outlet steam temperature transmitter 12.

[0090] Step 3: System pressure increase:

[0091] When the system temperature reaches the preset requirement, start the pressure increase operation. Slowly close the No. 1 regulating valve 14 remotely. Gradually increase the pressure of the device system according to the opening of the No. 1 regulating valve 14. When the system reaches the set pressure, keep the opening of the No. 1 regulating valve 14 unchanged. At this time, start the motion test.

[0092] Step 4: Start the device motion test:

[0093] When the system pressure rises to the test pressure and there is no abnormality in the jogging motion, start to test the tooling manually. Slowly move the boarding device at a slow speed gear. During this period, observe whether there is steam leakage at the movable joints of the device, whether there are abnormal deformations and motion jams in the mechanical structure and pipeline system. Conduct several cycles. Record the motion time of each time through the PLC as the calculation input for subsequent calculation of the motion displacement, and record the temperature, pressure, position, reaction force, etc. of the device during operation in real time through the PLC system.

[0094] Maintenance of temperature and pressure during the test:

[0095] In Step 4, pay attention to the temperature inside the system in real time. When the temperature drops below 400 °C, the device needs to be reset. Adjust the opening of the No. 1 regulating valve 14 to adjust the steam volume. Gradually increase the system temperature by increasing the steam flow. When the temperature rises above the test temperature, repeat Step 3 and Step 4.

[0096] Step 5: Stop the machine after the test is completed:

[0097] When all test items are completed, start the shutdown operation of the system. First, slowly close the No. 1 inlet motorized valve 5 to cut off the steam supply. Then, slowly open the No. 1 regulating valve 14 to release the pressure inside the system. Subsequently, manually open the No. 1 steam trap 10 and the No. 2 steam trap 12, and return the boarding device to the initial position. Check the components when the system temperature drops below 40 °C.

[0098] Embodiment 2:

[0099] When conducting the adjustment performance test of the steam control valve 24,

[0100] The specific implementation steps are as follows:

[0101] Step 1: State before test start:

[0102] The second inlet stop valve is closed, the second inlet electric valve is closed, the third and fourth steam traps are closed, the second control valve is opened, and the steam control valve 24 to be tested is opened;

[0103] Step 2: System temperature rise:

[0104] Open the second inlet stop valve. At this time, slowly open the second inlet electric valve. The steam is discharged through the second silencer after the second control valve 28 in the outlet exhaust pipe. Observe the system temperature through the second outlet steam temperature transmitter 27 at the outlet. By adjusting the opening of the second control valve 28 in the outlet exhaust pipe, control the system temperature rise within 5 - 10 °C / min. During the temperature rise process, open the third and fourth steam traps to drain the water inside the device. After the drainage ends, close them or keep them slightly open. Determine the system temperature through the reading of the second outlet steam temperature transmitter 27;

[0105] Step 3: Establish system pressure difference:

[0106] When the system temperature reaches the preset requirement, start to adjust the pressure difference of the system. Slowly close the second control valve 28. At this time, observe the difference between the pressure P202 behind the steam control valve 24 to be tested and the pressure P201 in front of the valve, and make it reach the test requirement. Then start the valve adjustment performance test;

[0107] Step 4: Start the adjustment performance test:

[0108] Steam control valve adjustment performance test: Under the set pressure difference condition, by setting different openings of the steam control valve 24 to be tested, measure the flow rate in real time through the flowmeter 25, record the opening of the steam control valve 24 to be tested and the real-time value of the flowmeter 25, and obtain the opening - flow rate curve of the valve.

[0109] Performance test under different pressure difference conditions:

[0110] During the performance test, it is often necessary to test the adjustment performance under different pressure difference conditions. First, adjust the steam control valve 24 to the fully open position. Then, by adjusting the opening of the second control valve 28 in the exhaust pipe, adjust the pressure difference before and after the steam control valve 24 to be tested. Then repeat Step 4.

[0111] Step 5: Stop the machine after the test is completed:

[0112] After all test subjects are completed, start the shutdown operation of the system. First, slowly close the No. 2 inlet electric valve to cut off the steam supply. Then, slowly open the No. 2 regulating valve 28 to release the pressure inside the system. Subsequently, manually open the No. 3 steam trap and No. 4 steam trap; the steam regulating valve 24 is closed and returned to the initial position. Check the components when the system temperature drops below 40°C.

[0113] Example 3:

[0114] Test steps for the hot-state sealing performance of the steam switch 39

[0115] The specific implementation steps are as follows:

[0116] The first step, the state before the test starts:

[0117] The No. 3 inlet stop valve 32 is closed, the No. 3 inlet electric valve 33 is closed, the No. 5 steam trap 37 and the No. 6 steam trap 38 are closed, the No. 3 regulating valve 43 is opened, and the tested steam switch 39 is opened.

[0118] The second step, system heating:

[0119] Open the No. 3 inlet stop valve 32. At this time, slowly open the No. 3 inlet electric valve 33. Steam is discharged from the outlet exhaust pipe through the switch valve 42 and the No. 3 regulating valve 43, and then discharged through the No. 3 silencer 44. Observe the system temperature according to the No. 3 outlet steam temperature transmitter 43 at the outlet. By adjusting the opening of the No. 3 regulating valve 43 in the outlet exhaust pipe, control the system temperature rise within 5 - 10°C / min. During the heating process, open the steam traps 37 and 38 to drain the water inside the device, and close or keep a small opening after the draining is completed. Determine the system temperature through the reading of the No. 3 outlet steam temperature transmitter 43.

[0120] The third step, establish pressure for the system and test whether the steam switch 39 leaks externally:

[0121] When the system temperature reaches the preset requirement, start pressurizing the tested steam switch 39. The method is as follows: First, close the No. 3 inlet electric switch valve 32 and the No. 3 inlet electric valve 33, and close the outlet switch valve 42 and the No. 3 regulating valve 43. At this time, there is no pressure inside the system. Then open the No. 3 inlet electric switch valve 32, and slowly adjust the No. 3 regulating valve 43 to gradually increase the pressure inside the valve system to the set value. When the set pressure is reached inside the steam switch 39, observe the external steam leakage situation of the steam switch 39. If there is external leakage, water vapor and white smoke will emerge, otherwise it is qualified.

[0122] The fourth step, establish pressure in front of the valve and test whether the steam switch 39 leaks internally:

[0123] After the external leakage test of the steam switch 39 is completed, close the No. 3 inlet motorized valve 32 and the No. 3 inlet regulating valve 33, close the steam switch 39 to be tested, then open the No. 3 regulating valve 43 and the exhaust switch valve 42. Then, after opening the No. 3 inlet motorized valve 32, slowly open the inlet regulating valve 302 to adjust the pressure in front of the valve of the steam switch 39 to the set pressure value. The steam leakage observation port is set at the outlet of the steam switch 39 to be tested. At this time, open the valve of the steam leakage observation port and check for steam leakage through the observation port. If white smoke or water vapor emerges, it indicates internal leakage of the valve; otherwise, it is qualified.

[0124] Circulation test

[0125] According to the requirements of the number of cycles in the test outline, repeat the third and fourth steps respectively to conduct the circulation test, that is, repeatedly perform steps such as pressure relief - temperature reduction - temperature increase - pressure increase - leak detection.

[0126] Step 5, pressure relief after the test is completed:

[0127] When all test items are completed, start the shutdown operation of the system. First, slowly close the motorized valve to cut off the steam supply, then slowly open the exhaust valve to release the internal pressure of the system, and then manually open the steam traps 301 and 302. Return the boarding device to the initial position. Check the components when the system temperature drops below 40°C.

[0128] The test method described in the present invention can be flexibly applied according to the actual situation. Three devices to be tested can be tested simultaneously, or one of them can be selected for the test. The operation is convenient and the use is flexible.

[0129] The above description is an explanation of the present invention, not a limitation of the invention. The scope defined by the present invention is referred to the claims. Any form of modification can be made within the protection scope of the present invention.

Claims

1. A hot test system for a shore-to-ship steam transport device, characterized in that: Comprising high-temperature and high-pressure steam (1), the outlet of the high-temperature and high-pressure steam (1) is connected to a main pipe (2), and the outlet of the main pipe (2) branches into multiple branch pipes. Among them, a first branch pipe (3) is successively connected in series with a first inlet stop valve (4), a first inlet electric valve (5), a first pressure transmitter (6), a first inlet steam temperature transmitter (7) and a device under test. At the outlet of the device under test, a first outlet pipe (13) is successively connected in series with a first outlet steam temperature transmitter (12), a first regulating valve (14) and a first silencer (15). The output end of the first silencer (15) is connected to the atmosphere. Among them, a second branch pipe (16) is successively connected in series with a second inlet stop valve (17), a second inlet electric valve (18), a second pressure transmitter (19), a second inlet steam temperature transmitter (20) and a device under test. At the outlet of the device under test, a second outlet pipe (30) is successively connected in series with a flow meter (25), a third pressure transmitter (26), a second outlet steam temperature transmitter (27), a second regulating valve (28) and a second silencer (29). The output end of the second silencer (29) is connected to the atmosphere. Among them, a third branch pipe (31) is successively connected in series with a third inlet stop valve (32), a third inlet electric valve (33), a third pressure transmitter (34), a third inlet steam temperature transmitter (35) and a device under test. At the outlet of the device under test, a third outlet pipe (45) is successively connected in series with a fourth pressure transmitter (40), a third outlet steam temperature transmitter (41), a switching valve (42), a third regulating valve (43) and a third silencer (44). The output end of the third silencer (44) is connected to the atmosphere. The device under test is a universal high-temperature and high-pressure steam shore-to-ship conveying device (8), a steam regulating valve (24) or a steam switch (39). Both ends of the universal high-temperature and high-pressure steam shore-to-ship conveying device (8), the steam regulating valve (24) and the steam switch (39) are provided with pipe orifices connected to the pipeline. A first drain pipe (9) is connected to the first branch pipe (3) between the first inlet steam temperature transmitter (7) and the device under test, and a first drain valve (10) and a second drain valve (11) are connected in series on the first drain pipe (9). A second drain pipe (21) is connected to the second branch pipe (16) between the second inlet steam temperature transmitter (20) and the device under test, and a third drain valve (22) and a fourth drain valve (23) are connected in series on the second drain pipe (21).

2. The hot state test system of a shore-boat steam transmission device according to claim 1, wherein: The universal high-temperature and high-pressure steam shore-to-ship conveying device (8) is connected in the first branch pipeline (3), the steam regulating valve (24) is connected in the second branch pipeline (16), and the steam switch (39) is connected in the third branch pipeline (31).

3. A hot state test system for a shore-to-ship steam transport device as claimed in claim 1, characterized in that: A third drain pipe (36) is connected to the third branch pipe (31) between the third inlet steam temperature transmitter (35) and the device under test, and a fifth drain valve (37) and a sixth drain valve (38) are connected in series on the third drain pipe (36).

4. A test method for a hot test system of a shore-to-ship steam transfer device according to claim 1, characterized in that: Comprising the following operating steps: First, connect the device to be tested to the system; Status before test start: Close all inlet stop valves, all inlet motorized valves, all drain valves, and open all regulating valves; Secondly, heat up the system: The operations in each branch pipe are the same. The specific operation in one branch pipe is as follows: Open the inlet stop valve. At this time, slowly open the inlet motorized valve. Steam is discharged from the silencer behind the regulating valve. Observe the system temperature through the outlet steam temperature transmitter at the outlet. Adjust the opening degree of the inlet motorized valve to control the system temperature rise within 5 - 10 °C / min. Open the drain valve during the heating process to drain the water inside the device. After the drainage is completed, close it or keep it slightly open. Determine the system temperature based on the reading of the outlet steam temperature transmitter; Then, increase the system pressure: When the system temperature reaches the preset requirement, start the pressure increase operation. Slowly close the regulating valve remotely. Gradually increase the pressure of the device system along with the opening degree of the regulating valve. When the system reaches the set pressure, keep the opening degree of the regulating valve unchanged. At this time, start the motion test; Then, start the performance test of the device to be tested: Test the motion test, regulation performance test, or internal and external leakage test of the device to be tested; Maintaining temperature and pressure during the test process: Finally, stop the machine after the test is completed: When all test items are completed, start the shutdown operation of the system. First, slowly close the motorized valve to cut off the steam supply. Then, slowly open the regulating valve to release the internal pressure of the system. Subsequently, manually open the drain valve; return the device to be tested to its initial position; check the components after the system temperature drops below 40 °C.

5. The test method of the hot - state test system of a shore - ship steam transmission device according to claim 4, characterized in that: When the device to be tested is a universal high - temperature and high - pressure steam shore - ship transmission device (8), conduct a motion test: When the system pressure rises to the test pressure and there is no abnormality in the jogging motion, start to manually operate the test fixture to slowly move the on - ship device at a slow speed gear. During this period, observe whether there is steam leakage at the movable joints of the device, whether there are abnormal deformations and motion jams in the mechanical structure and pipeline system; conduct several cycles, record the motion time of each time through the PLC as the calculation input for subsequent calculation of the motion displacement, and record the temperature, pressure, position, and reaction force data of the device during operation in real - time through the PLC system; When the device to be tested is a steam regulating valve, conduct a regulation performance test: Under the set pressure difference condition, by setting different opening degrees of the steam regulating valve to be tested, measure the flow rate in real - time through a flow meter, record the opening degree of the steam regulating valve to be tested and the real - time value of the flow meter, and obtain the opening - flow rate curve of the valve; When the device to be tested is a steam switch (39), conduct an internal and external leakage test: After the system temperature reaches the preset requirement, pressurization of the steam switch (39) to be tested starts. First, close the inlet motorized switch valve and the inlet motorized valve, and close the outlet switch valve and the regulating valve. At this time, there is no pressure inside the system. Then open the inlet motorized switch valve and slowly adjust the regulating valve to gradually increase the pressure inside the valve system to the set value. After the pressure inside the steam switch (39) reaches the set pressure, observe the steam leakage outside the steam switch (39). If there is external leakage, water vapor and white smoke will emerge; otherwise, it is qualified. After the external leakage test of the steam switch (39) is completed, close the inlet motorized valve and the inlet regulating valve, and close the steam switch (39) to be tested. Subsequently, open the regulating valve and the switch valve. Then, after opening the inlet motorized valve, slowly open the regulating valve to adjust the pressure before the valve of the steam switch (39) to the set pressure value. The steam leakage observation port is set at the outlet of the steam switch (39). At this time, open the valve of the steam leakage observation port and check the steam leakage situation through the observation port. If white smoke or water vapor emerges, it indicates that there is internal leakage in the valve; otherwise, it is qualified.

Images