Multi-degree-of-freedom temporary supporting hydraulic system of steam generator

Abstract

The invention provides a multi-degree-of-freedom temporary supporting hydraulic system of a steam generator. The multi-degree-of-freedom temporary supporting hydraulic system comprises an oil tank assembly, a circumferential oil cylinder assembly, a radial oil cylinder assembly, a lower supporting oil cylinder assembly and a vertical oil cylinder assembly. Oil inlets of the circumferential oil cylinder assembly, the radial oil cylinder assembly and the lower supporting oil cylinder assembly are connected into the low-pressure adjusting loop in parallel, an oil inlet of the vertical oil cylinder assembly is connected with the high-pressure adjusting loop, and the low-pressure adjusting loop and the high-pressure adjusting loop are connected into the pump assembly in parallel. The pressure loss and the overflow valve loss are small, the energy consumption is low, the heat productivity is low, the flow of the high-pressure pipeline and the low-pressure pipeline is controlled through the pressure reducing valve, redundant flow directly returns to the oil tank instead of returning to the oil tank through the overflow valve, and the pressure loss and the overflow loss are reduced, so that the system energy consumption is reduced, and the system heat productivity is reduced.

Description

Technical Field

[0001] The invention relates to a multi-degree-of-freedom temporary support hydraulic system for a steam generator. Background Art

[0002] Energy is the foundation of social and economic development. Nuclear power plays an important role in the energy structure. At present, most of the nuclear power plants put into construction and operation in my country are pressurized water reactor nuclear power plants. As one of the key components of nuclear power units, the steam generator has a net weight of about 624t. It has the technical characteristics of heavy tonnage, large volume, long hoisting time, and high installation precision requirements. Before the steam generator is in place, it needs temporary support to keep it in a stable "standing" posture. It is mainly divided into two parts: upper temporary support and lower temporary support. The temporary support is used to complete the accurate docking of the steam generator and the main pipeline, which is convenient for the installation of the permanent support of the steam generator. The hydraulic system provides power for the temporary support of the steam generator. The upper temporary support is installed on the top of the CA01 wall. The three-dimensional movement, verticality, rotation and locking functions of the steam generator are realized through the upper 8 horizontal hydraulic cylinders and 4 vertical hydraulic cylinders; the lower temporary support is installed on the middle ear shaft of the steam generator body, and the verticality of the steam generator body is adjusted and locked through 4 hydraulic cylinders.

[0003] Steam generators require multi-degree-of-freedom movement, requiring the maximum horizontal movement speed of the hydraulic cylinder to reach 75mm / min, the rated vertical speed to reach 2.5mm / min, the circumferential rotation angle to be ±1°, the vertical range to be 0-0.5°, and the angle adjustment accuracy to be 0.01°, but the existing steam generator support hydraulic system does not meet the above requirements. For example, CN116928497A discloses a support device, system and installation method for nuclear steam generator installation, which drives the base to move in the horizontal or longitudinal direction in a plane perpendicular to the vertical direction through the horizontal drive part and the longitudinal drive part of the first drive part that are 90 degrees to each other, which can meet the need to move the nuclear steam generator in a plane perpendicular to the vertical direction; but it cannot support the steam generator to rotate and cannot meet the use requirements. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a steam generator multi-degree-of-freedom temporary support hydraulic system.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a steam generator multi-degree-of-freedom temporary support hydraulic system, comprising an oil tank assembly, a circumferential oil cylinder assembly, a radial oil cylinder assembly, a lower support oil cylinder assembly, and a vertical oil cylinder assembly; the oil inlets of the circumferential oil cylinder assembly, the radial oil cylinder assembly, and the lower support oil cylinder assembly are connected in parallel to a low-pressure regulating circuit, the oil inlet of the vertical oil cylinder assembly is connected to a high-pressure regulating circuit, the low-pressure regulating circuit and the high-pressure regulating circuit are both connected in parallel to a pump assembly, and the oil return ports of the circumferential oil cylinder assembly, the radial oil cylinder assembly, the lower support oil cylinder assembly, and the vertical oil cylinder assembly are all connected in parallel to a pump assembly. The return oil pipeline is connected in parallel, the pump assembly is connected to the oil outlet of the oil tank assembly, the low-pressure regulating circuit and the high-pressure regulating circuit are respectively installed with a first pressure reducing valve and a second pressure reducing valve, and a one-way valve, a single-tube pipeline filter combination, and a ball valve are arranged between the pump assembly and the low-pressure regulating circuit and the high-pressure regulating circuit in sequence; the circumferential cylinder assembly, the radial cylinder assembly, the lower support cylinder assembly, and the vertical cylinder assembly are respectively composed of four groups of circumferential cylinder control circuits, four groups of radial cylinder control circuits, four groups of lower support cylinder control circuits, and four groups of vertical cylinder control circuits connected in parallel.

[0007] An oil suction filter is installed in the oil tank assembly and connected to the oil outlet of the oil tank assembly. An oil return filter is also provided on the oil tank assembly and connected to the oil return pipeline.

[0008] A butterfly valve and a first flexible joint are sequentially connected between the oil suction filter and the pump assembly.

[0009] The oil tank assembly is also equipped with a liquid level transmitter, a temperature transmitter, and an air filter. The oil tank assembly is also equipped with a cooler. Both ends of the cooler are connected to the oil tank assembly through pipelines. Both ends of the cooler are respectively equipped with a first stop valve and a second stop valve.

[0010] The pump assembly comprises a plunger pump, which is connected to a motor via a bell-shaped housing coupling.

[0011] The outlet of the one-way valve is also connected to a needle valve, and a pressure gauge and a pressure transmitter are installed on the needle valve.

[0012] The outlet of the one-way valve is also connected to the oil return pipeline through an electromagnetic overflow valve.

[0013] The circumferential cylinder control circuit, radial cylinder control circuit and lower support cylinder control circuit all include an M-type electromagnetic reversing valve. The oil inlet of the M-type electromagnetic reversing valve is connected to the low-pressure regulating circuit through a branch pipe. The two working ports of the M-type electromagnetic reversing valve are respectively connected to the oil inlet and oil outlet of a circumferential cylinder through a superimposed hydraulically controlled one-way valve, a superimposed double one-way throttle valve and a pressure measuring joint. The oil return port of the M-type electromagnetic reversing valve is connected to the oil return pipeline.

[0014] The vertical oil cylinder control circuit includes an O-type electromagnetic reversing valve; the oil inlet of the O-type electromagnetic reversing valve is connected to the high-pressure regulating circuit, and the working port is connected to the vertical oil cylinder through a superimposed hydraulic control one-way valve, a superimposed one-way throttle valve, a pressure measuring joint, and an explosion-proof valve in sequence.

[0015] A communication pipeline is provided between any two groups of circumferential cylinder control circuits, any two groups of radial cylinder control circuits, any two groups of lower support cylinder control circuits, and any two groups of vertical cylinder control circuits in the circumferential cylinder assembly, radial cylinder assembly, lower support cylinder assembly, and vertical cylinder assembly. The superimposed one-way throttle valves on the circuits are provided with a communication pipeline.

[0016] The beneficial effects of the present invention are:

[0017] The system has a simple structure, high reliability, stable operation, and is easy to maintain. It meets the requirements of the maximum horizontal movement speed of the hydraulic cylinder of 75mm / min, the rated vertical speed of 2.5mm / min, the circumferential rotation angle of ±1°, the verticality range of 0-0.5°, and the angle adjustment accuracy of 0.01°.

[0018] Considering the mismatch of flow in the hydraulic pipeline of the vertical cylinder after 0.5° eccentric load, it has hydraulic and mechanical locking functions and is connected to an explosion-proof valve to prevent accidental drop due to overload, ensuring the synchronous and stable operation of the vertical cylinder and the coordinated linkage of multiple hydraulic cylinders;

[0019] The pressure loss and overflow valve loss are small, the energy consumption is low, the heat generation is low, and the flow of high and low pressure pipelines is controlled by the pressure reducing valve. The excess flow returns to the oil tank directly instead of returning to the oil tank through the overflow valve. The pressure loss and overflow loss are reduced, thereby reducing the system energy consumption and the system's heat generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the system principle of the present invention.

[0021] In the figure: 1- oil tank assembly, 101- oil suction filter, 102- butterfly valve, 103- first flexible joint, 104- liquid level transmitter, 105- temperature transmitter, 106- air filter, 107- oil return filter, 108- liquid level and temperature gauge, 109- oil drain ball valve, 110- first stop valve, 111- second stop valve, 112- cooler, 2- pump assembly, 201- plunger pump, 202- bell housing coupling, 203-motor, 3-check valve, 4-needle valve, 5-pressure gauge, 6-pressure transmitter, 7-single tube pipeline filter combination, 8-ball valve, 9-first pressure reducing valve, 10-second pressure reducing valve, 11-electromagnetic overflow valve, 12-circumferential cylinder assembly, 1201-M-type electromagnetic reversing valve A, 1202-superimposed hydraulic control check valve A, 1203-superimposed double check throttle valve A, 1204-first pressure measuring joint A, 1205-second pressure measuring joint Press joint A, 1206-circumferential cylinder, 13-radial cylinder assembly, 1301-M type electromagnetic reversing valve B, 1302-superimposed hydraulic control check valve B, 1303-superimposed double one-way throttle valve B, 1304-first pressure measuring joint B, 1305-second pressure measuring joint B, 1306-radial cylinder, 14-lower support cylinder assembly, 1401-M ​​type electromagnetic reversing valve C, 1402-superimposed hydraulic control check valve C, 140 3-superimposed double one-way throttle valve C, 1404-first pressure measuring joint C, 1405-second pressure measuring joint C, 1406-lower supporting cylinder, 15-vertical cylinder assembly, 1501-O-type solenoid reversing valve, 1502-superimposed hydraulic one-way valve D, 1503-one-way throttle valve D, 1504-pressure measuring joint D, 1505-explosion-proof valve, 1506-vertical cylinder, 16-low-pressure regulating circuit, 17-high-pressure regulating circuit. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0023] like Figure 1 As shown, the multi-degree-of-freedom temporary support hydraulic system of the steam generator includes a tank assembly 1, a pump assembly 2, a one-way valve 3, a needle valve 4, a pressure gauge 5, a pressure transmitter 6, a single-tube pipeline filter assembly 7, a ball valve 8, a pressure reducing valve 19, a pressure reducing valve 210, an electromagnetic overflow valve 11, a circumferential oil cylinder and a control valve group 12, a radial oil cylinder and a control valve group 13, a lower support oil cylinder and a control valve group 14, and a vertical oil cylinder and a control valve group 15, which are connected in sequence;

[0024] The oil tank assembly 1 includes an oil suction filter 1.1, a liquid level transmitter 1.4, a temperature transmitter 1.5, an air filter 1.6, a liquid level and temperature gauge 1.8, and an oil drain ball valve 1.9, which are connected to a cooler 1.12 through stop valves 1.10 and 1.11, to an oil return filter 1.7 through an oil return pipe interface, and to an axial piston pump 2.1 in sequence through a butterfly valve 1.2 and a flexible joint 1.3; the pump assembly 2 includes an axial piston pump 2.1 and a motor M 2.3 of the bell-shaped housing coupling 2.2; the circumferential oil cylinder and control valve group 12, the radial oil cylinder and control valve group 13 and the lower support oil cylinder and control valve group 14 are connected in sequence through the one-way valve 3, the single-tube pipeline filter combination 7, the ball valve 8, the pressure reducing valve 19 and the low-pressure regulating pipeline; the vertical oil cylinder and control valve group 15 are connected in sequence through the one-way valve 3, the single-tube pipeline filter combination 7, the ball valve 8, the pressure reducing valve 210 and the high-pressure regulating pipeline.

[0025] The circumferential cylinder and control valve group 12 is composed of 4 groups of circumferential cylinder control circuits in parallel, with a single cylinder load ≥135t, including an M-type electromagnetic reversing valve A1201, a superimposed hydraulically controlled one-way valve A1202, a superimposed double one-way throttle valve A1203, a first pressure measuring joint A1204 and a second pressure measuring joint A1205, and a circumferential cylinder 1206 connected in sequence to realize the circumferential sliding and locking functions of the steam generator.

[0026] The radial cylinder and control valve group 13 is composed of 4 groups of radial cylinder control circuits in parallel, with a single cylinder load ≥135t, including an M-type electromagnetic reversing valve B1301, a superimposed hydraulically controlled one-way valve B1302, a superimposed double one-way throttle valve B1302, a first pressure measuring joint B1304 and a second pressure measuring joint B1305, and a radial cylinder 1306 connected in sequence to realize the radial sliding and locking functions of the steam generator.

[0027] The lower supporting cylinder and control valve group 14 is composed of 4 groups of lower supporting cylinder control circuits in parallel, with a single cylinder bearing capacity of ≥135t, including an M-type electromagnetic reversing valve C1401, a superimposed hydraulically controlled one-way valve C1402, a superimposed double one-way throttle valve C1403, a first pressure measuring joint 1404 and a second pressure measuring head 1405, and a lower supporting cylinder 1406 connected in sequence, to achieve the vertical adjustment and locking functions of the steam generator body.

[0028] The vertical cylinder and control valve group 15 is composed of 4 groups of vertical cylinder control circuits in parallel, and adopts the oil supply method of single oil circuit directly connected to the large chamber of the cylinder. The single cylinder load is ≥308t, including O-type electromagnetic reversing valve 1501, superimposed hydraulic control one-way valve D1502, one-way throttle valve D1503, pressure measuring joint D1504, explosion-proof valve 1505, vertical cylinder 1506 connected in sequence. It has mechanical and hydraulic locking functions to realize the vertical synchronous stable operation and locking function of the steam generator body.

[0029] The circumferential oil cylinder and control valve group 12, radial oil cylinder and control valve group 13 and lower support oil cylinder and control valve group 14 are connected in parallel by a low-pressure regulating pipeline, and the vertical oil cylinder and control valve group 15 are connected in parallel by a high-pressure regulating pipeline. By controlling the valve groups separately, the three-dimensional movement, vertical sliding, rotation and locking functions of the steam generator are realized.

[0030] The hydraulic cylinder is adjusted quickly and automatically, using a "chasing" adjustment method, using the feedback signal of the displacement sensor to continuously provide the current position of the hydraulic cylinder. Taking the extension amount of each hydraulic cylinder after each movement decomposition as the target, the remaining hydraulic cylinders approach the extension amount under the control of the displacement signal. Due to the coupling of each point, each position continues to approach until each point reaches the specified position at the same time, and the adjustment process ends.

[0031] When the steam generator temporarily supports the circumferential oil cylinder, the axial piston pump 201 is turned on, and the hydraulic pump 201 pumps the hydraulic oil out of the oil tank. The hydraulic oil passes through the oil suction filter 101, the butterfly valve 102, the flexible joint 103, the axial piston pump 201, the check valve 3, the single-tube pipeline filter combination 7, the ball valve 8, the first pressure reducing valve 9, and the second pressure reducing valve 10 into the low-pressure regulating pipeline and the high-pressure regulating pipeline. The electromagnetic relief valve 11 adjusts the working pressure of the entire system. The O-type solenoid reversing valve 1501 of the oil cylinder control valve group is powered off and is in the middle position and does not work. The first pressure reducing valve 10 adjusts the pressure of the high-pressure pipeline to discharge the excess oil back to the oil tank. The first pressure reducing valve 9 adjusts the pressure of the low-pressure pipeline to discharge the excess oil back to the oil tank. The hydraulic oil enters the M-type solenoid reversing valve A1201 of the circumferential oil cylinder control valve group, the M-type solenoid reversing valve B1301 of the radial oil cylinder control valve group and the M-type solenoid reversing valve C1401 of the lower support oil cylinder control valve group. At this time, the radial oil cylinder controls The M-type solenoid reversing valve B1301 of the valve group and the M-type solenoid reversing valve C1401 of the lower supporting oil cylinder control valve group are powered off and are in the middle position and do not work. The M-type solenoid reversing valve A1201 of the circumferential oil cylinder control valve group is powered on and opened in the left position. The superimposed hydraulic control one-way valve A1202 is opened, the superimposed double one-way throttle valve A1203 is opened, and the hydraulic oil enters the large cavity of the circumferential oil cylinder 1206. The piston rod of the circumferential oil cylinder 1206 extends to adjust the circumferential displacement and posture of the steam generator. Similarly, The M-type solenoid reversing valve A12.1 of the circumferential cylinder control valve group is energized to the right position and opened, the superimposed hydraulically controlled one-way valve A1202 is opened, the superimposed double one-way throttle valve A1203 is opened, the hydraulic oil enters the small chamber of the circumferential cylinder 1206, and the piston rod of the circumferential cylinder 1206 is retracted to adjust the circumferential displacement and posture of the steam generator; the M-type solenoid reversing valve A1201 of the circumferential cylinder control valve group is de-energized and in the middle position, and the hydraulic pipeline of the circumferential cylinder 1206 maintains pressure to achieve hydraulic locking.

[0032] When the steam generator temporarily supports the radial cylinder to work, the M-type solenoid reversing valve A1201 of the circumferential cylinder control valve group and the M-type solenoid reversing valve C1401 of the lower support cylinder control valve group are powered off and are in the middle position and do not work. The M-type solenoid reversing valve B1301 of the radial cylinder control valve group is powered on and opened in the left position, the superimposed hydraulic control one-way valve B1302 is opened, the superimposed double one-way throttle valve B1303 is opened, the hydraulic oil enters the large cavity of the radial cylinder B1306, and the piston rod of the radial cylinder B1306 is extended to adjust the steam. Generator radial displacement and posture; similarly, the right position of the M-type electromagnetic reversing valve B1301 of the radial cylinder control valve group is energized and opened, the superimposed hydraulic control one-way valve B1302 is opened, the superimposed double one-way throttle valve B1303 is opened, the hydraulic oil enters the small chamber of the radial cylinder 1306, and the piston rod of the radial cylinder 1306 is retracted to adjust the radial displacement and posture of the steam generator; the M-type electromagnetic reversing valve B1301 of the radial cylinder control valve group is de-energized and in the middle position, and the hydraulic pipeline of the radial cylinder 1306 is pressurized to achieve hydraulic locking.

[0033] When the steam generator temporarily supports the lower supporting cylinder, the M-type solenoid reversing valve A1201 of the circumferential cylinder control valve group and the M-type solenoid reversing valve B1301 of the radial cylinder control valve group are powered off and are in the middle position and do not work. The M-type solenoid reversing valve 1401 of the lower supporting cylinder control valve group is powered on and opened, the superimposed hydraulic control one-way valve C1402 is opened, the superimposed double one-way throttle valve C1403 is opened, the hydraulic oil enters the large cavity of the lower supporting cylinder 1406, and the piston rod of the lower supporting cylinder 1406 is extended to adjust the steam generation. The displacement and posture of the steam generator support; similarly, the right position of the M-type electromagnetic reversing valve C1401 of the lower support cylinder control valve group is energized and opened, the superimposed hydraulic control one-way valve C1402 is opened, the superimposed double one-way throttle valve C1403 is opened, the hydraulic oil enters the small chamber of the lower support cylinder 1406, and the piston rod of the lower support cylinder 1406 is retracted to adjust the displacement and posture of the steam generator support; the M-type electromagnetic reversing valve C1401 of the lower support cylinder control valve group is de-energized and in the middle position, and the hydraulic pipeline of the radial cylinder 1406 is pressurized to achieve hydraulic locking.

[0034] When the steam generator needs to be temporarily supported by the coordinated adjustment of the circumferential cylinder 1206, radial cylinder 1306 and lower support cylinder 1406, the circumferential cylinder control valve group M-type solenoid reversing valve A1201, the radial cylinder control valve group M-type solenoid reversing valve B1301 and the lower support cylinder control valve group M-type solenoid reversing valve C1401 can be controlled according to the specific process to realize the three-dimensional movement, verticality, rotation and locking functions of the steam generator.

[0035] When the three-dimensional posture of the steam generator is adjusted in place, the vertical cylinder 1505 realizes the vertical sliding and locking functions. When the steam generator temporarily supports the vertical cylinder, the M-type solenoid reversing valve A1201 of the circumferential cylinder control valve group, the M-type solenoid reversing valve B1301 of the radial cylinder control valve group and the M-type solenoid reversing valve C1401 of the lower support cylinder control valve group are powered off and are in the middle position and do not work. The O-type solenoid reversing valve 1501 of the vertical support cylinder control valve group is powered on and opened in the left position. The superimposed hydraulic control check valve D1502, the one-way throttle valve D1503 and the explosion-proof valve 1505 are opened, and the hydraulic oil enters the large cavity of the vertical cylinder 1506. The vertical cylinder 1506 is 05 The piston rod is extended slowly to adjust the support displacement and posture of the steam generator; similarly, the right position of the M-type solenoid reversing valve D1501 of the vertical cylinder control valve group is energized and opened, the superimposed hydraulic control one-way valve D1502 is opened, the one-way throttle valve D1503 is opened, the hydraulic oil enters the small chamber of the vertical cylinder 1506, and the piston rod of the vertical cylinder 1506 is retracted to adjust the vertical displacement and posture of the steam generator; the M-type solenoid reversing valve D1501 of the vertical cylinder control valve group is de-energized and in the middle position, and the hydraulic pipeline of the vertical cylinder 1506 is pressurized to achieve hydraulic locking.

Claims

1. A multi-degree-of-freedom temporary support hydraulic system for a steam generator, comprising an oil tank assembly (1), a circumferential oil cylinder assembly (12), a radial oil cylinder assembly (13), a lower support oil cylinder assembly (14), and a vertical oil cylinder assembly (15), characterized in that: The oil inlets of the circumferential oil cylinder assembly (12), the radial oil cylinder assembly (13), and the lower support oil cylinder assembly (14) are connected in parallel to the low-pressure regulating circuit (16); the oil inlet of the vertical oil cylinder assembly (15) is connected to the high-pressure regulating circuit (17); the low-pressure regulating circuit (16) and the high-pressure regulating circuit (17) are both connected in parallel to the pump assembly (2); the oil return ports of the circumferential oil cylinder assembly (12), the radial oil cylinder assembly (13), the lower support oil cylinder assembly (14), and the vertical oil cylinder assembly (15) are all connected in parallel to the oil return pipeline; the pump assembly (2) is connected to the oil outlet of the oil tank assembly (1); the low A first pressure reducing valve (9) and a second pressure reducing valve (10) are respectively installed on the low-pressure regulating circuit (16) and the high-pressure regulating circuit (17); a one-way valve (3), a single-tube pipeline filter assembly (7) and a ball valve (8) are sequentially arranged between the pump assembly (2) and the low-pressure regulating circuit (16) and the high-pressure regulating circuit (17); the circumferential cylinder assembly (12), the radial cylinder assembly (13), the lower support cylinder assembly (14) and the vertical cylinder assembly (15) are respectively formed by connecting four groups of circumferential cylinder control circuits, four groups of radial cylinder control circuits, four groups of lower support cylinder control circuits and four groups of vertical cylinder control circuits in parallel.

2. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 1, characterized in that: An oil suction filter (101) is installed in the oil tank assembly (1) and is connected to the oil outlet of the oil tank assembly (1). An oil return filter (107) is also provided on the oil tank assembly (1) and is connected to the oil return pipeline.

3. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 2, characterized in that: A butterfly valve (102) and a first flexible joint (103) are sequentially connected between the oil suction filter (101) and the pump assembly (2).

4. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 2, characterized in that: The oil tank assembly (1) is also equipped with a liquid level transmitter (104), a temperature transmitter (105), and an air filter (106). The oil tank assembly (1) is also equipped with a cooler (112). Both ends of the cooler (112) are connected to the oil tank assembly (1) via pipelines. Both ends of the cooler (112) are respectively equipped with a first stop valve (110) and a second stop valve (111).

5. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 1, characterized in that: The pump assembly (2) comprises a plunger pump (201), and the plunger pump (201) is connected to a motor (203) via a bell-shaped housing coupling (202).

6. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 1, characterized in that: The outlet of the one-way valve (3) is also connected to a needle valve (4), and a pressure gauge (5) and a pressure transmitter (6) are installed on the needle valve (4).

7. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 6, characterized in that: The outlet of the one-way valve (3) is also connected to the oil return pipeline via an electromagnetic overflow valve (11).

8. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 1, characterized in that: The circumferential cylinder control circuit, the radial cylinder control circuit, and the lower support cylinder control circuit all include an M-type electromagnetic reversing valve, the oil inlet of the M-type electromagnetic reversing valve is connected to the low-pressure regulating circuit (16) through a branch pipe, the two working ports of the M-type electromagnetic reversing valve are respectively connected to the oil inlet and oil outlet of a circumferential cylinder through a superimposed hydraulic control one-way valve, a superimposed double one-way throttle valve, and a pressure measuring joint, and the oil return port of the M-type electromagnetic reversing valve is connected to the oil return pipeline.

9. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 1, characterized in that: The vertical oil cylinder control circuit comprises an O-type electromagnetic reversing valve; the oil inlet of the O-type electromagnetic reversing valve is connected to the high-pressure regulating circuit (17), and the working port is connected to the vertical oil cylinder through a superimposed hydraulic control one-way valve, a superimposed one-way throttle valve, a pressure measuring joint, and an explosion-proof valve in sequence.

10. The multi-degree-of-freedom temporary support hydraulic system for a steam generator according to claim 1, characterized in that: A communication pipeline is provided between any two groups of circumferential cylinder control circuits, any two groups of radial cylinder control circuits, any two groups of lower support cylinder control circuits, and any two groups of vertical cylinder control circuits in the circumferential cylinder assembly (12), the radial cylinder assembly (13), the lower support cylinder assembly (14), and the vertical cylinder assembly (15). The stacked one-way throttle valves on the circuits are provided with a communication pipeline.

Images