A leak detection blocking device for a hydrostatic testing machine

Abstract

This invention provides a leakage detection and blocking device for a hydrostatic testing machine. The hydrostatic testing machine is equipped with a sealing circuit, a pressurizing circuit, and a pressure-holding circuit. The blocking device includes three blocking devices: a first blocking device, a second blocking device, and a third blocking device. The first blocking device is located on the sealing circuit, and opening it allows for the determination of whether a leak has occurred in the sealing circuit. The second blocking device is located on the pressurizing circuit, and opening it allows for the determination of whether a leak has occurred in the pressurizing circuit. The third blocking device is located on the pressure-holding circuit, and opening it allows for the determination of whether a leak has occurred in the pressure-holding circuit. This device can quickly locate the fault area, significantly reduce the inspection area, avoid the consumption of spare parts through individual inspections, shorten the handling time, avoid the disassembly and assembly of intact components, greatly shorten the troubleshooting time, reduce spare parts consumption, and improve economic efficiency and work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of water pressure testing safety technology, and in particular to a leakage detection and blocking device for a water pressure testing machine. Background Technology

[0002] In actual production, the test pressure of a hydrostatic testing machine can reach 80MPa. Because the core mode of hydrostatic testing is static pressure holding (holding time is 6 seconds), each circuit must be in a completely sealed and leak-free state. When any component in the circuit has internal or external leakage, it will cause high pressure loss. If the pressure fluctuation exceeds 0.5MPa, the test will fail. Due to the small leakage and short test time, it is generally difficult to directly observe abnormalities from the surface of the external pipes and valves of the equipment. Traditional troubleshooting methods require replacing spare parts at each node or guessing the fault point (because the sealing structure in high-pressure environments mostly uses metal wire seals, the degree of wear cannot be judged by the naked eye) until the static water pressure stabilizes. This process consumes a lot of manpower, material resources and time, resulting in significant economic losses.

[0003] Therefore, there is an urgent need for a detection and blocking device that can quickly locate the fault point or narrow down the fault range of a hydrostatic testing machine without disassembling spare parts point by point. Utility Model Content

[0004] The purpose of this utility model is to provide a leakage detection and blocking device for a hydrostatic testing machine. This device can quickly locate the fault range of the hydrostatic testing machine, greatly reduce the inspection area, reduce unnecessary disassembly and assembly operations and spare parts consumption, reduce the difficulty of equipment maintenance, and effectively improve economic benefits and work efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A leakage detection and blocking device for a hydrostatic testing machine is disclosed. The hydrostatic testing machine is equipped with a sealing circuit, a pressurizing circuit, and a pressure-holding circuit. The blocking device includes three blocking devices: a first blocking device, a second blocking device, and a third blocking device. The first blocking device is located on the sealing circuit, which is equipped with a first pressure sensor and a sealing pressurizing cylinder. When the first blocking device is activated, the first pressure sensor can determine whether a leak has occurred in the sealing circuit. The second blocking device is located on the pressurizing circuit, which is equipped with a second pressure sensor, a reciprocating pressurizing cylinder, and a pressure-stabilizing cylinder. Assuming that the sealing circuit is fault-free, when the second blocking device is activated and the reciprocating pressurizing cylinder is started, the second pressure sensor can determine whether a leak has occurred in the pressurizing circuit. The third blocking device is located on the pressure-holding circuit. When the third blocking device is activated and the sealing pressurizing cylinder, the reciprocating pressurizing cylinder, and the pressure-stabilizing cylinder are started, the first pressure sensor can determine whether a leak has occurred in the pressure-holding circuit.

[0007] Furthermore, in the aforementioned leakage detection and blocking device for a hydraulic testing machine, the blocking device includes a reversing device, a connecting block, a bracket, an upper valve seat, a valve core, a valve sleeve, a lower valve seat, a valve body, a base, and a valve stem. The lower end of the valve body is bolted to the base, and the base is provided with an inlet. The side wall of the valve body is provided with an outlet. The bracket is bolted to the upper end of the valve body, and the reversing device is mounted on the bracket. The valve sleeve, the upper valve seat, and the lower valve seat are all disposed within the valve body, with the upper valve seat located above the valve sleeve and the lower valve seat located below the valve sleeve. The valve core is disposed within the valve sleeve and can move up and down within the valve sleeve. The upper end of the valve core is connected to the lower end of the valve stem, and the upper end of the valve stem passes through the valve body and is connected to the reversing device via the connecting block. A return spring is sleeved on the valve stem located above the valve body.

[0008] Furthermore, in the aforementioned water pressure testing machine leakage detection and blocking device, the water pressure testing machine is used to test the performance of the steel pipe. The water pressure testing machine has two sealing heads, a first high-pressure hose, a second high-pressure hose, and a third high-pressure hose. The steel pipe to be tested is installed between the two sealing heads. The sealing head located at one end of the steel pipe is a water injection head, and the sealing head located at the other end of the steel pipe is an air vent head. The water injection head is connected to the water inlet pipe, and the water injection head and the air vent head are connected through the first high-pressure hose. A first shuttle valve is provided at the end of the first high-pressure hose near the water injection head, and a first shuttle valve is provided at the end of the first high-pressure hose near the air vent head. A second shuttle valve is provided. One end of the second high-pressure hose is connected to the first high-pressure hose, and the other end of the second high-pressure hose is connected to one end of the third high-pressure hose. The other end of the third high-pressure hose is connected to the water inlet pipe. On the second high-pressure hose, from one end to the other, the first pressure sensor, the sealing unloading valve, the safety valve group, and the sealing check valve group are sequentially arranged. The sealing booster cylinder is connected to the sealing check valve group. The second high-pressure hose is the sealing circuit. The first stopper is provided on the second high-pressure hose between the first high-pressure hose and the first pressure sensor.

[0009] Furthermore, in the aforementioned leakage detection and blocking device for the hydrostatic testing machine, the hydrostatic testing machine also has a fourth high-pressure hose. One end of the fourth high-pressure hose is connected to the water injection head, and the other end of the fourth high-pressure hose is connected to one end of the third high-pressure hose. A shock-resistant pressure gauge, a second pressure sensor, and an unloading valve are sequentially arranged on the fourth high-pressure hose from one end to the other. The other end of the fourth high-pressure hose is connected to the third high-pressure hose via a first branch pipe, a second branch pipe, and a third branch pipe. Each of the first, second, and third branch pipes is equipped with a pressure-boosting one-way valve assembly. The pressure-stabilizing cylinder is connected to the pressure-boosting one-way valve assembly on the first branch pipe. The pressure-boosting one-way valve assembly on the second and third branch pipes is connected via the reciprocating pressure-boosting cylinder. The fourth high-pressure hose, the first branch pipe, the second branch pipe, and the third branch pipe constitute the pressure-boosting circuit. The second blocking device is located on the fourth high-pressure hose, and compared to the shock-resistant pressure gauge, the second blocking device is closer to one end of the fourth high-pressure hose.

[0010] Furthermore, in the above-mentioned water pressure testing machine leakage detection and blocking device, the first high-pressure hose is the pressure-holding circuit, and the third blocking device is installed on the first high-pressure hose between the water injection head and the first shuttle valve.

[0011] Furthermore, in the aforementioned water pressure testing machine leakage detection and blocking device, a safety valve is installed on the third high-pressure hose.

[0012] Analysis shows that this utility model discloses a leakage detection and blocking device for a hydrostatic testing machine. This device, by opening the blocking device, allows for segmented combined testing of the pressure holding circuit, sealing circuit, and pressurization circuit of the hydrostatic testing machine. This quickly locates the fault area, significantly reduces the inspection area, avoids consuming spare parts through individual testing, shortens the handling time, avoids disassembling intact components, greatly shortens the troubleshooting time, reduces spare parts consumption, and improves economic efficiency and work efficiency. Attached Figure Description

[0013] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0015] Figure 2 This is a schematic diagram of the structure of a sealing circuit according to an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the booster circuit according to an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the structure of a blocking device according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached drawings: 1 First stopper; 2 Second stopper; 3 Third stopper; 4 First high-pressure hose; 5 Second high-pressure hose; 6 Third high-pressure hose; 7 Fourth high-pressure hose; 8 Steel pipe; 9 Water injection head; 10 Exhaust head; 11 Inlet pipe; 12 First shuttle valve; 13 Second shuttle valve; 14 First pressure sensor; 15 Sealed unloading valve; 16 Safety valve assembly; 17 Sealed check valve assembly; 18 Sealed booster cylinder; 19 Shock-resistant pressure gauge; 20 Second pressure sensor; 21 Unloading valve; 22 First branch pipe; 23 Second branch pipe; 24 Third branch pipe; 25 Booster check valve assembly; 26 Pressure stabilizing cylinder; 27 Reciprocating booster cylinder; 28 Safety valve; 29 Reversing device; 30 Connecting block; 31 Bracket; 32 Upper valve seat; 33 Valve core; 34 Valve sleeve; 35 Lower valve seat; 36 Valve body; 37 Base; 38 Valve stem; 39 Inlet; 40 Outlet; 41 Return spring. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0020] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0021] The accompanying drawings illustrate one or more examples of the present invention. The detailed description uses numerals and letters to refer to features in the drawings. Similar or analogous reference numerals in the drawings and description have been used to refer to similar or analogous parts of the present invention. As used herein, the terms “first,” “second,” and “third,” etc., are used interchangeably to distinguish one component from another and are not intended to indicate the location or importance of individual components.

[0022] like Figures 1 to 4 As shown, according to an embodiment of this utility model, a leakage detection and blocking device for a hydrostatic testing machine is provided. The hydrostatic testing machine is equipped with a sealing circuit, a pressurizing circuit, and a pressure-holding circuit. The blocking device includes three blocking devices, wherein, as shown... Figure 1As shown, the three blocking devices are the first blocking device 1, the second blocking device 2, and the third blocking device 3. The first blocking device 1 is installed on the sealing circuit, which is equipped with a first pressure sensor 14 and a sealing pressure boosting cylinder 18. After the first blocking device 1 is opened, the first pressure sensor 14 can be used to determine whether there is a leak in the sealing circuit. The second blocking device 2 is installed on the pressure boosting circuit, which is equipped with a second pressure sensor 20, a reciprocating pressure boosting cylinder 27, and a pressure stabilizing cylinder 26. Under the premise that there is no fault in the sealing circuit, after the second blocking device 2 is opened and the reciprocating pressure boosting cylinder 27 is started, the second pressure sensor 20 can be used to determine whether there is a leak in the pressure boosting circuit. The third blocking device 3 is installed on the pressure holding circuit. After the third blocking device 3 is opened and the sealing pressure boosting cylinder 18, the reciprocating pressure boosting cylinder 27, and the pressure stabilizing cylinder 26 are started, the first pressure sensor 14 can be used to determine whether there is a leak in the pressure holding circuit.

[0023] Furthermore, such as Figure 4 As shown, the stopper includes a reversing device 29, a connecting block 30, a bracket 31, an upper valve seat 32, a valve core 33, a valve sleeve 34, a lower valve seat 35, a valve body 36, a base 37, and a valve stem 38. The lower end of the valve body 36 is bolted to the base 37, which has an inlet 39. An outlet 40 is located on the side wall of the valve body 36. The bracket 31 is bolted to the upper end of the valve body 36, and the reversing device 29 is mounted on the bracket 31. The valve sleeve 34, upper valve seat 35, connecting block 30, bracket 31, upper valve seat 32, connecting block 33, connecting block 34, connecting block 35, connecting block 36, connecting block 37, connecting block 38, connecting block 39, connecting block 30, connecting block 31, upper valve seat 32, connecting block 33, connecting block 34, connecting block 35, connecting block 36, connecting block 37, connecting block 38, connecting block 39, connecting block 30, connecting block 31, connecting block ... Both the upper valve seat 32 and the lower valve seat 35 are located within the valve body 36. The upper valve seat 32 is positioned above the valve sleeve 34, and the lower valve seat 35 is positioned below the valve sleeve 34. The valve core 33 is located within the valve sleeve 34 and can move up and down within the valve sleeve 34. The upper end of the valve core 33 is connected to the lower end of the valve stem 38. The upper end of the valve stem 38 passes through the valve body 36 and is connected to the reversing device 29 via a connecting block 30. A return spring 41 is fitted onto the valve stem 38 located above the valve body 36. When the shut-off device is in the closed state, the valve core 33 is tightly fitted with the upper valve seat 32 under the action of water pressure and the pulling force of the reversing device 29, thereby sealing the valve core 33 and the upper valve seat 32. At this time, the inlet 39 and outlet 40 of the shut-off device are unobstructed. When the shut-off device is in the open state, the valve stem 38 moves downward and compresses the return spring 41, so that the valve core 33 and the lower valve seat 35 fit tightly together, thereby sealing the valve core 33 and the lower valve seat 35. The channels of the shut-off device's inlet 39 and outlet 40 are closed, thus achieving the purpose of blocking the water circuit of the water pressure testing machine.

[0024] Furthermore, the hydraulic pressure testing machine is used to test the performance of the steel pipe 8. The hydraulic pressure testing machine has two sealing heads, a first high-pressure hose 4, a second high-pressure hose 5, and a third high-pressure hose 6. The steel pipe 8 to be tested is installed between the two sealing heads. The sealing head located at one end of the steel pipe 8 is a water injection head 9, and the sealing head located at the other end of the steel pipe 8 is an air vent head 10. The water injection head 9 is connected to the water inlet pipe 11. The water injection head 9 and the air vent head 10 are connected through the first high-pressure hose 4. A first shuttle valve 12 is provided at the end of the first high-pressure hose 4 near the water injection head 9, and a second shuttle valve 13 is provided at the end of the first high-pressure hose 4 near the air vent head 10. One end of the second high-pressure hose 5 is connected to the first high-pressure hose 4 between the first shuttle valve 12 and the second shuttle valve 13. The other end of the second high-pressure hose 5 is connected to one end of the third high-pressure hose 6. The other end of the third high-pressure hose 6 is connected to the water inlet pipe 11. On the second high-pressure hose 5, from one end to the other end, a first pressure sensor 14, a sealing unloading valve 15, a safety valve group 16, and a sealing check valve group 17 are sequentially arranged. The sealing booster cylinder 18 is connected to the sealing check valve group 17. The second high-pressure hose 5 is a sealed circuit. The first blocker 1 is arranged on the second high-pressure hose 5 between the first high-pressure hose 4 and the first pressure sensor 14.

[0025] Furthermore, the hydraulic pressure testing machine also has a fourth high-pressure hose 7, one end of which is connected to the water injection head 9, and the other end of which is connected to one end of the third high-pressure hose 6. On the fourth high-pressure hose 7, a shock-resistant pressure gauge 19, a second pressure sensor 20, and an unloading valve 21 are sequentially installed from one end to the other. The other end of the fourth high-pressure hose 7 is connected to the third high-pressure hose 6 via a first branch pipe 22, a second branch pipe 23, and a third branch pipe 24. Both the second and third branch pipes 23 and 24 are equipped with pressure boosting check valve groups 25. The pressure stabilizing cylinder 26 is connected to the pressure boosting check valve group 25 on the first branch pipe 22. The pressure boosting check valve group 25 on the second branch pipe 23 and the pressure boosting check valve group 25 on the third branch pipe 24 are connected by a reciprocating pressure boosting cylinder 27. The fourth high-pressure hose 7, the first branch pipe 22, the second branch pipe 23 and the third branch pipe 24 form a pressure boosting circuit. The second stopper 2 is installed on the fourth high-pressure hose 7. Compared with the shock-resistant pressure gauge 19, the second stopper 2 is closer to one end of the fourth high-pressure hose 7.

[0026] Furthermore, the first high-pressure hose 4 is a pressure-maintaining circuit, and the third stopper 3 is installed on the first high-pressure hose 4 between the water injection head 9 and the first shuttle valve 12.

[0027] Furthermore, a safety valve 28 is installed on the third high-pressure hose 6.

[0028] The procedure for using this device to detect leaks in a hydrostatic testing machine is as follows:

[0029] Step 1, Sealed Circuit Inspection:

[0030] Activate the first blocker 1 to achieve the following: Figure 2 For the sealing circuit shown, start the sealing booster cylinder 18 and observe the sealing pressure curve generated by the first pressure sensor 14. If the sealing pressure curve steadily rises to the set value and remains stable, it indicates that the sealing circuit is normal. If the sealing pressure curve shows slight fluctuations or large oscillations, it is determined that there is a leak in the sealing circuit, and the sealing unloading valve 15, sealing check valve group 17, safety valve group 16, and other equipment need to be checked.

[0031] Step 2, Boosting circuit test:

[0032] Assuming the sealed circuit is fault-free, opening the second blocking device 2 will achieve the following: Figure 3 The pressure boosting circuit shown is activated by starting the reciprocating pressure boosting cylinder 27. Observe the pressure boosting curve generated by the second pressure sensor 20: If the pressure boosting curve steadily rises to the set value and remains stable, it indicates that the pressure boosting circuit is normal. If the pressure boosting curve shows slight fluctuations or large oscillations, it is determined that there is a leak in the pressure boosting circuit, and the three pressure boosting check valve groups 25 and the unloading valve 21, etc., need to be checked.

[0033] Step 3, Pressure Holding Circuit Test:

[0034] After confirming that the booster circuit and the sealing circuit are normal, open the third stopper 3, start the sealing booster cylinder 18, the reciprocating booster cylinder 27 and the pressure stabilizing cylinder 26, and observe the pressure stabilizing curve formed by the first pressure sensor 14: a stable pressure stabilizing curve indicates that the pressure holding circuit is normal; if the pressure stabilizing curve is abnormal, check the first shuttle valve 12 and the second shuttle valve 13 and other equipment.

[0035] Finally, close the first stopper 1, the second stopper 2, and the third stopper 3, and observe the pressure curve formed by the first pressure sensor 14 and the second pressure sensor 20. If the pressure curve is stable, it indicates that all circuits of the hydrostatic testing machine are normal. If the pressure curve is abnormal, check the upper seal, lower seal, large gap seal, pressure boosting port seal, and large seal of the sealing head of the water injection head 9 and sealing head.

[0036] By using the above method to detect leaks in the hydrostatic testing machine, any abnormality detected in any part can pinpoint the fault area, eliminating the need for blindly estimating any valve group or component in the entire circuit. Compared to the traditional point-by-point troubleshooting method, this can shorten the detection time by more than 70%, reduce spare parts consumption by 60%, and significantly improve fault diagnosis efficiency. During normal operation of the hydrostatic testing machine, all interruptors are in the closed state, ensuring uninterrupted operation.

[0037] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0038] A leakage detection and blocking device for a hydrostatic testing machine is disclosed. This device, by opening the blocking device, allows for segmented combined testing of the pressure holding circuit, sealing circuit, and pressurization circuit of the hydrostatic testing machine. This enables rapid location of the fault, significantly reduces the inspection area, avoids the consumption of spare parts through individual testing, shortens the handling time, avoids the disassembly and assembly of intact components, greatly shortens the troubleshooting time, reduces spare parts consumption, and improves economic efficiency and work efficiency.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A leakage detection blocking device for a hydrostatic testing machine provided with a sealing circuit, a pressurizing circuit, and a pressure maintaining circuit, characterized by, The blocking device includes three blocking elements, wherein, The three blocking devices are a first blocking device, a second blocking device, and a third blocking device. The first blocking device is installed on the sealing circuit, and the sealing circuit is equipped with a first pressure sensor and a sealing pressure cylinder. After the first blocking device is opened, the first pressure sensor can determine whether there is a leak in the sealing circuit. The second blocking device is installed on the booster circuit, which is equipped with a second pressure sensor, a reciprocating booster cylinder, and a pressure stabilizing cylinder. Under the premise that the sealing circuit is fault-free, after the second blocking device is opened and the reciprocating booster cylinder is started, the second pressure sensor can determine whether there is a leak in the booster circuit. The third interruptor is installed on the pressure holding circuit. After the third interruptor is activated and the sealing booster cylinder, the reciprocating booster cylinder and the pressure stabilizing cylinder are started, the first pressure sensor can determine whether there is a leak in the pressure holding circuit.

2. The leakage detection and blocking device for a hydrostatic testing machine according to claim 1, characterized in that, The blocking device includes a reversing device, a connecting block, a bracket, an upper valve seat, a valve core, a valve sleeve, a lower valve seat, a valve body, a base, and a valve stem. The lower end of the valve body is connected to the base by bolts. The base is provided with a water inlet, and the side wall of the valve body is provided with a water outlet. The bracket is bolted to the upper end of the valve body. The reversing device is mounted on the bracket. The valve sleeve, the upper valve seat, and the lower valve seat are all disposed in the valve body. The upper valve seat is located above the valve sleeve, and the lower valve seat is located below the valve sleeve. The valve core is disposed inside the valve sleeve and can move up and down inside the valve sleeve. The upper end of the valve core is connected to the lower end of the valve stem. The upper end of the valve stem passes through the valve body and is connected to the reversing device through the connecting block. A return spring is fitted onto the valve stem located above the valve body.

3. The leakage detection and blocking device for a hydrostatic testing machine according to claim 1, characterized in that, The hydraulic pressure testing machine is used to test the performance of steel pipes. The hydraulic pressure testing machine has two sealing heads, a first high-pressure hose, a second high-pressure hose, and a third high-pressure hose. The steel pipe to be tested is installed between the two sealing heads. The sealing head located at one end of the steel pipe is a water injection head, and the sealing head located at the other end of the steel pipe is a venting head. The water injection head is connected to the water inlet pipe. The water injection head and the venting head are connected via the first high-pressure hose. A first shuttle valve is provided at the end of the first high-pressure hose near the water injection head, and a second shuttle valve is provided at the end of the first high-pressure hose near the venting head. One end of the second high-pressure hose is connected to the first high-pressure hose, and the other end of the second high-pressure hose is connected to one end of the third high-pressure hose. The other end of the third high-pressure hose is connected to the water inlet pipe. On the second high-pressure hose, the first pressure sensor, the sealing unloading valve, the safety valve group and the sealing check valve group are sequentially arranged from one end of the second high-pressure hose to the other end. The sealed booster cylinder is connected to the sealed one-way valve assembly; The second high-pressure hose is the sealed circuit; The first blocker is disposed on the second high-pressure hose between the first high-pressure hose and the first pressure sensor.

4. The leakage detection and blocking device for a hydrostatic testing machine according to claim 3, characterized in that, The hydraulic testing machine also has a fourth high-pressure hose, one end of which is connected to the water injection head, and the other end of which is connected to one end of the third high-pressure hose; On the fourth high-pressure hose, a shock-resistant pressure gauge, a second pressure sensor, and an unloading valve are sequentially installed from one end of the fourth high-pressure hose to the other end. The other end of the fourth high-pressure hose is connected to the third high-pressure hose through the first branch pipe, the second branch pipe, and the third branch pipe respectively. Each of the first branch pipe, the second branch pipe, and the third branch pipe is equipped with a pressure boosting one-way valve group. The pressure stabilizing cylinder is connected to the pressure boosting one-way valve group on the first branch pipe. The pressure boosting one-way valve group on the second branch pipe and the pressure boosting one-way valve group on the third branch pipe are connected through the reciprocating pressure boosting cylinder. The fourth high-pressure hose, the first branch pipe, the second branch pipe, and the third branch pipe constitute the booster circuit; The second stopper is disposed on the fourth high-pressure hose, and is located closer to one end of the fourth high-pressure hose than the shock-resistant pressure gauge.

5. The leakage detection and blocking device for a hydrostatic testing machine according to claim 3, characterized in that, The first high-pressure hose is the pressure-maintaining circuit, and the third stopper is installed on the first high-pressure hose between the water injection head and the first shuttle valve.

6. The leakage detection and blocking device for a hydrostatic testing machine according to claim 3, characterized in that, A safety valve is installed on the third high-pressure hose.

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