Hydraulic pressure testing machine for steel cylinder of prestressed steel cylinder concrete pipe

Abstract

The utility model discloses a hydrostatic testing machine for a steel cylinder of a prestressed concrete cylinder pipe, which comprises a detection seat, a water storage tank is arranged at the upper end of the detection seat, a supporting seat is fixedly connected to the inner bottom of the water storage tank, two vertical plates are symmetrically and fixedly connected to the inner bottom of the water storage tank, and the vertical plates are fixedly connected to the upper end of the detection seat. The opposite sides of the two vertical plates are fixedly connected with hydraulic telescopic rods, and the telescopic ends of the two hydraulic telescopic rods are fixedly connected with limiting circular plates. And the detection mechanism comprises a water pump installed on the left side of the left side brush plate, the water inlet end of the water pump extends to the inner bottom of the water storage tank, the water storage end of the water pump communicates with a hose, the other end of the hose communicates with a transverse pipe, and the transverse pipe is a hard pipe and penetrates through the left side limiting circular plate. When the hydraulic pressure testing machine is used, the use of actual water can be reduced, in addition, the water can be reused through semi-open arrangement, and meanwhile, the water is prevented from diffusing to the surrounding.

Description

Technical Field

[0001] The utility model relates to the technical field of water pressure testing machines, in particular to a water pressure testing machine for a prestressed steel cylinder concrete pipe steel cylinder. Background Art

[0002] Prestressed steel cylinder concrete pipe, referred to as PCCP, has the characteristics of high pressure resistance, corrosion resistance, high sealing, high strength and high impermeability. It is widely used in long-distance water supply trunks, urban water supply projects, industrial pressure water supply trunks and pressure sewage mains. It is a water supply pipeline made by winding circumferential prestressed steel wire on a high-strength concrete pipe core with a steel cylinder, and then spraying a dense cement mortar protective layer on it. The steel cylinder embedded in the concrete pipe core plays a role in preventing seepage and enhancing the longitudinal tensile strength and circumferential compressive strength. In the production process of PCCP, in order to ensure the absolute tightness and pressure-bearing capacity of the steel cylinder weld, the water pressure test process is a very important process link. Among them, each steel cylinder must be subjected to a water pressure test before entering the mold casting process;

[0003] When using traditional water pressure testing devices, the inside of the cylinder is generally filled with water before testing. This takes a long time to actually flush the water, resulting in the need to improve the overall test efficiency. In addition, existing devices often use an open setting, which can easily lead to water leakage to the surrounding area. At the same time, after the test is completed, the water in the tube body needs to be pumped out to release the contact seal between the test part and the tube body, which is undoubtedly more troublesome. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a hydraulic pressure testing machine for a prestressed steel cylinder concrete pipe steel cylinder. When the hydraulic pressure testing machine is in use, the use of actual water can be reduced. In addition, through a semi-open setting, the water can be reused while preventing the water from spreading to the surroundings.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hydrostatic pressure testing machine for the steel cylinder of a prestressed concrete cylinder pipe, comprising a detection seat. An aqueduct is opened at the upper end of the detection seat. A support seat is fixedly connected to the inner bottom of the aqueduct. Two vertical plates are symmetrically and fixedly connected to the inner bottom of the aqueduct. Hydraulic telescopic rods are fixedly connected to the opposite sides of the two vertical plates. The telescopic ends of the two hydraulic telescopic rods are fixedly connected with limiting circular plates; a detection mechanism, the detection mechanism includes a water pump installed on the left side of the left brush plate. The water inlet end of the water pump extends to the inner bottom of the aqueduct. The water storage end of the water pump is communicated with a hose. The other end of the hose is communicated with a cross pipe. The cross pipe is a rigid pipe and penetrates through the left limiting circular plate; a guiding mechanism, the guiding mechanism is used to improve the stability of the movement of the two limiting circular plates.

[0007] Preferably, sealing rings are fixedly connected to the opposite sides of the two limiting circular plates.

[0008] Preferably, inner cylinders are fixedly connected to the opposite sides of the two limiting circular plates. Annular gaskets are fixedly connected to the opposite sides of the two inner cylinders.

[0009] Preferably, a pressure gauge is installed on the cross pipe.

[0010] Preferably, the guiding mechanism includes two chutes symmetrically and fixedly connected to the inner bottom of the aqueduct. Slide bars are fixedly connected to the lower ends of the two limiting circular plates. The lower ends of the two slide bars extend into the chutes and are slidably connected to the inner walls of the chutes.

[0011] Preferably, an exhaust port is opened on the limiting circular plate on the right side. A manual valve is installed in the exhaust port.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] In actual use, by using the setting of the two inner cylinders, when performing a hydrostatic pressure test, an annular gap is formed inside the steel cylinder of the concrete pipe. In this way, when performing a hydrostatic pressure test, the water injection volume is effectively reduced, thereby improving the overall test efficiency. In addition, a semi-open setting is adopted, which allows the water body to be reused and avoids the situation of moisture around the device caused by water leakage. At the same time, after the test is completed, directly start the contraction of the two hydraulic telescopic rods, which further improves the efficiency of the entire process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of a hydrostatic pressure testing machine for the steel cylinder of a prestressed concrete cylinder pipe proposed by the present invention;

[0015] Figure 2 is Figure 1 a schematic cross-sectional view of;

[0016] Figure 3 For Figure 2 the enlarged view of part A of

[0017] In the figure: 1 detection seat, 2 water storage tank, 3 vertical plate, 4 hydraulic telescopic rod, 5 support seat, 6 chute, 7 limit circular plate, 8 water pump, 9 hose, 10 slide bar, 11 pressure gauge, 12 horizontal pipe, 13 sealing ring, 14 inner cylinder, 15 annular sealing gasket, 16 exhaust port. Specific implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Refer to Figures 1 - 3 , a hydrostatic testing machine for the steel cylinder of a prestressed concrete cylinder pipe, including a detection seat 1. A water storage tank 2 is opened at the upper end of the detection seat 1. A support seat 5 is fixedly connected to the inner bottom of the water storage tank 2. Two vertical plates 3 are symmetrically and fixedly connected to the inner bottom of the water storage tank 2. Hydraulic telescopic rods 4 are fixedly connected to the opposite sides of the two vertical plates 3. Limit circular plates 7 are fixedly connected to the telescopic ends of the two hydraulic telescopic rods 4. Sealing rings 13 are fixedly connected to the opposite sides of the two limit circular plates 7. Inner cylinders 14 are fixedly connected to the opposite sides of the two limit circular plates 7. Annular sealing gaskets 15 are fixedly connected to the opposite sides of the two inner cylinders 14;

[0020] Among them, it further includes a detection mechanism. The detection mechanism includes a water pump 8 installed on the left side of the left brush plate. The water inlet end of the water pump 8 extends to the inner bottom of the water storage tank 2. The water storage end of the water pump 8 is communicated with a hose 9. The other end of the hose 9 is communicated with a horizontal pipe 12. The horizontal pipe 12 is a rigid pipe and penetrates through the left limit circular plate 7. A pressure gauge 11 is installed on the horizontal pipe 12;

[0021] Among them, it further includes a guiding mechanism. The guiding mechanism is used to improve the stability of the movement of the two limit circular plates 7. The guiding mechanism includes two chutes 6 symmetrically and fixedly connected to the inner bottom of the water storage tank 2. Slide bars 10 are fixedly connected to the lower ends of the two limit circular plates 7. The lower ends of the two slide bars 10 extend into the chutes 6 and are slidably connected to the inner walls of the chutes 6. An exhaust port 16 is opened on the limit circular plate 7 on the right side. A manual valve is installed in the exhaust port 16.

[0022] In the present invention, during the actual use process, the concrete cylinder pipe is placed on the upper end of the support seat 5, and then the two hydraulic telescopic rods 4 are started, so that the two limit circular plates 7 move relatively and are clamped into the inner side of the concrete cylinder pipe, showing Figure 1In this state, the two annular gaskets 15 are in contact with each other, and the two sealing rings 13 are in contact with both sides of the concrete pipe steel cylinder. At this time, an annular gap is formed inside the concrete pipe steel cylinder. The staff opens the manual valve on the exhaust port 16 and then starts the water pump 8. Water will be injected into the annular gap. The water will first squeeze out the air inside the annular gap. When the air is completely squeezed out, the manual valve in the exhaust port 16 is closed, and then the water pump 8 is started continuously to increase the water pressure inside the annular gap to achieve the purpose of the pressure test. After the test is completed, the two hydraulic telescopic rods 4 are started to contract, which will drive the two limiting circular plates 7 to move away from each other. At this time, the water in the annular gap will fall into the water storage tank 2, which is convenient for the next use.

[0023] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A hydraulic pressure testing machine for a prestressed concrete cylinder pipe, characterized in that: include: A detection seat (1), wherein a water storage tank (2) is provided at the upper end of the detection seat (1), the inner bottom of the water storage tank (2) is fixedly connected to a support seat (5), the inner bottom of the water storage tank (2) is symmetrically fixedly connected to two vertical plates (3), the opposite sides of the two vertical plates (3) are fixedly connected to hydraulic telescopic rods (4), and the telescopic ends of the two hydraulic telescopic rods (4) are fixedly connected to a limiting circular plate (7); A detection mechanism, the detection mechanism comprising a water pump (8) installed on the left side of the left brush plate, the water inlet end of the water pump (8) extending to the inner bottom of the water storage tank (2), the water storage end of the water pump (8) being connected to a hose (9), the other end of the hose (9) being connected to a transverse pipe (12), the transverse pipe (12) being a hard pipe and penetrating the left limit circular plate (7); A guiding mechanism, wherein the guiding mechanism is used to improve the stability of movement of the two limiting circular plates (7).

2. A hydraulic pressure testing machine for a prestressed concrete cylinder pipe according to claim 1, characterized in that: Sealing rings (13) are fixedly connected to opposite sides of the two limiting circular plates (7).

3. The hydraulic pressure testing machine for prestressed concrete cylinder pipe according to claim 1, characterized in that: The opposite sides of the two limiting circular plates (7) are fixedly connected to inner cylinders (14), and the opposite sides of the two inner cylinders (14) are fixedly connected to annular sealing gaskets (15).

4. A hydraulic pressure testing machine for a prestressed concrete cylinder pipe according to claim 1, characterized in that: A pressure gauge (11) is installed on the transverse pipe (12).

5. The hydraulic pressure testing machine for prestressed concrete cylinder pipe according to claim 1, characterized in that: The guide mechanism comprises two slide grooves (6) symmetrically fixedly connected to the bottom of the water storage tank (2), the lower ends of the two limiting circular plates (7) are fixedly connected to the slide bars (10), the lower ends of the two slide bars (10) extend into the slide grooves (6) and are slidably connected to the inner wall of the slide grooves (6).

6. The hydraulic pressure testing machine for prestressed concrete cylinder pipe according to claim 1, characterized in that: An exhaust port (16) is provided on the limiting circular plate (7) located on the right side, and a manual valve is installed in the exhaust port (16).

Images