CN204944762U - PCCP steel cylinder sealing hydrostatic test machine - Google Patents

Abstract

PCCP steel cylinder sealing water pressure testing machine, the inner tank is a single main tank (2), or a longer main tank (2) and at least one shorter auxiliary tank (11) to extend the structure, the top of the inner tank A built-in flange is used as the water sealing plate (5), and a flange is set at the bottom of the inner tank as the socket chassis (1). The outer diameter of the inner tank is the same and smaller than the socket Vent (7) is opened on the water tray (5), and the bottom of the socket chassis (1) is connected to the water storage container by connecting the water pipe (8), and also connected to the gas storage tank (9) and the upper pressure equipment (10) simultaneously. Use the inner tank structure of the main tank or auxiliary tank to improve the versatility of the equipment, and reduce the steel cylinder hydraulic equipment from 36 types of existing standards to 18 types, which can cover the sealing water pressure of all standard PCCP pipes Test, facilitate production and use, save equipment investment by 40%, save production site by 50%, and greatly reduce costs.

Description

PCCP steel cylinder sealing water pressure testing machine

technical field

The utility model relates to the structure improvement technology of a PCCP auxiliary test detection device, in particular to a PCCP steel cylinder sealing water pressure test machine.

Background technique

Prestressed Concrete Cylinder Pipe (PCCP) is a new type of steel pipe. It is a high-strength concrete tube core with a steel cylinder wound with prestressed steel wire, sprayed with a cement mortar protective layer, and adopts a steel socket, which is welded together with the steel cylinder. The socket has grooves and rubber rings to form a sliding glue. The flexible joint of the ring is a composite structure composed of steel plate, concrete, high-strength steel wire and cement mortar, and has the respective characteristics of steel and concrete. In the manufacturing process of PCCP, it is very important to strictly control the quality of important structures including steel cylinders. The tightness of the steel cylinder is an important quality index, which requires the assistance of steel cylinder hydraulic equipment and other equipment or equipment. The existing commonly used steel cylinder hydraulic equipment is mainly composed of an inner tank, a water system, an air system, an upper pressure device, an air storage tank, and a water pipe.

The diameter of the PCCP steel cylinder is 600-4000mm, the length is 5-6m, and the volume is relatively large. When it is inspected and repaired, it is necessary to install safety steel pipes suitable for inspection of all welding and repair welding operations of the steel cylinder around the inner tank. The working platform is set up. The gap between the platform and the inner tank is generally about 10cm, which ensures that the steel cylinder can be placed conveniently, and it is also convenient for manual inspection and repair welding of the weld. This means that one inner tank corresponds to the establishment of a Steel platform. The inner tank is a cylinder made of all steel, because the weld seam of the steel cylinder covers the entire pipe body in the longitudinal direction, in order to ensure that each weld seam can be inspected, the length of the inner tank must be the same as the length of the steel cylinder , if a length of steel cylinder is required, it must correspond to the inner tank of the corresponding length. The outer diameter of the liner is slightly lower than the inner diameter of the socket on the PCCP steel cylinder, and the general gap is about 2cm. The purpose of this is to ensure that every weld of the steel cylinder can be in contact with the water under pressure and can be inspected. At the same time, it ensures that the water consumption of the steel cylinder is not large, shortens the time of water filling, increases the efficiency of water filling, and shortens the working time, but at the same time it also requires that the diameter of each steel cylinder corresponds to a kind of die. The interior of the liner is hollow, and longitudinal and circumferential ribs are welded inside. The water system and air system enter the liner from the bottom of the liner. There are water inlet and outlet at the bottom, which are respectively controlled by valves. The valves are one-way valves and butterfly valves; there are safety valves and exhaust ports at the top; the thickness of the inner tank steel plate should be designed according to calculation. A closed space should be formed between the inner tank and the steel cylinder to ensure that the test medium water is not leaked, and sufficient water pressure can be obtained in the space for inspection. To seal the space, the bottom of the inner tank adopts the rubber ring type. The self-weight of the steel cylinder squeezes the apron, and the apron is deformed to fill the gap between the socket of the steel cylinder and the bottom of the inner tank, and the pressure caused by extrusion seals the water.

In short, in the prior art, the steel cylinder hydraulic equipment includes 36 standard specifications, the equipment has limited versatility, the manufacturing cost and waste are large, the production and use are cumbersome, and the equipment occupies too much space.

Utility model content

The purpose of the utility model is to provide a PCCP steel cylinder sealing water pressure testing machine, which can improve the versatility of equipment, effectively reduce and reduce the standard specifications of steel cylinder hydraulic equipment, facilitate production and use, and seriously affect production.

The purpose of this utility model will be achieved through the following technical measures: including socket chassis, main tank, rubber ring, water sealing tray, exhaust port, water pipe, gas storage tank, upper pressure equipment and auxiliary tank; the inner tank is a single main tank tank, or a longer main tank and at least one shorter auxiliary tank to extend the connection structure, a flange is built in the top of the tank as a water sealing plate, and a flange is set at the bottom of the tank as a socket chassis. The outer diameter is the same and smaller than that of the socket chassis and the water sealing pan. The air outlet is opened on the water sealing pan, and the rubber ring is installed on the lower edge of the water sealing pan. The water pipe connects the water storage container, and also connects the air storage tank and the upper pressure equipment simultaneously.

In particular, the length of the main tank is greater than or equal to 5m, and the length of the auxiliary tank is 1m.

In particular, airbags are installed on the outer edge of the socket chassis.

In particular, the auxiliary tank is connected with the main tank by bolts.

In particular, the sealing water tray has a certain number of connection holes at equal intervals in the circumferential direction.

In particular, a flange with the same thickness as the socket chassis is arranged in the bottom of the auxiliary tank.

The advantages and effects of the utility model: adopt the inner tank structure of the main tank or the auxiliary tank, improve the versatility of the equipment, reduce the steel cylinder hydraulic equipment from 36 types of existing standards to 18 types, and cover all standards The water pressure test of the tightness of standard PCCP pipes facilitates production and use, saves 40% of equipment investment, saves 50% of production sites, and greatly reduces costs.

Description of drawings

Fig. 1 is a schematic diagram of the application working structure of the main vessel in Embodiment 1 of the present utility model.

Fig. 2 is a schematic diagram of the connection structure of the auxiliary tank in Embodiment 1 of the present utility model.

Reference signs include:

Socket chassis 1, main tank 2, steel cylinder 3, rubber ring 4, water seal plate 5, bolt 6, exhaust port 7, water pipe 8, gas storage tank 9, upper pressure equipment 10, auxiliary tank 11.

detailed description

The principle of the utility model is to build a mechanical platform around the inner tank, and by changing the diameter and length of the inner tank, changing the quantity and volume of the inner tank, the space and quantity of the platform can be reduced. If the diameter of the inner tank is reduced, the gap between the inner tank and the steel cylinder will increase. Although the volume of the inner tank is reduced, the space occupied by the entire equipment cannot be effectively reduced due to the existence of the steel cylinder. At the same time, due to the filling of water The increase of the space will increase the water consumption, prolong the flushing time, and reduce the work efficiency. This kind of change is also not advisable. On the other hand, if the liner is changed to a combined type, which is composed of multiple standard blocks, it can be combined into liners with different diameters according to the diameter of the steel cylinder. This method can reduce the number of equipment and reduce the space occupied by the equipment. It does not affect the efficiency of the water supply pressure test, but it is not advisable to achieve different diameters through combination and to ensure its tightness. The technical difficulty and cost are too high. The length of the liner is improved, and the length of the liner is made according to the requirements of the PCCP steel cylinder standard, and the liner is made of a combination of the main liner that is often used and the auxiliary liner that needs to be used according to the size adjustment. It can be combined as needed. 5m long liner or 6m long liner, and the two types of liner only need a platform, a set of water system, air system, and pressure stabilizing equipment. After analysis, such an improvement is practical.

The utility model comprises: socket chassis 1, main tank 2, rubber ring 4, water sealing plate 5, exhaust port 7, water pipe 8, gas storage tank 9, upper pressure equipment 10 and auxiliary tank 11.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Embodiment 1: As shown in accompanying drawing 1 and accompanying drawing 2, the liner is a single main liner 2, or is connected by a longer main liner 2 and at least one shorter auxiliary liner 11, and the top of the liner is built-in A flange is used as the water sealing plate 5, and a flange is set on the bottom of the inner tank as the socket chassis 1, the outer diameter of the inner tank is the same and smaller than the socket chassis 1 and the water sealing plate 5, and the air outlet 7 is opened on the water sealing plate 5 , the rubber ring 4 is installed along the lower edge of the water sealing plate 5, the top of the liner and the water sealing plate 5 are connected by bolts 6, the bottom of the socket chassis 1 is connected to the water storage container through the connecting water pipe 8, and the gas storage tank 9 and Pressure device 10.

In the foregoing, the length of the main tank 2 is greater than or equal to 5m for the steel cylinder hydraulic test inner tank, and the length of the auxiliary tank 11 is 1m. The length of the main tank 2 is adapted to the hydraulic test of the 5m steel cylinder, and the auxiliary tank 11 is connected to the main tank 2 to be lengthened to be suitable for the hydraulic test of the 6m steel cylinder.

Among the aforementioned, the airbag is installed on the outer edge of the socket chassis 1 .

In the foregoing, the auxiliary tank 11 is connected to the main tank 2 with bolts 6 .

In the foregoing, the water sealing tray 5 has a certain number of connecting holes at equal intervals in the circumferential direction.

In the foregoing, a flange having the same thickness as the socket chassis 1 is provided in the bottom of the auxiliary tank 11 . During the hydraulic test of the 5m steel cylinder, the number and position of the flange holes of the auxiliary tank 11 and the main tank 2 correspond one by one. When a 6m inner tank is needed, the water and air systems of the two can be connected to complete the 6mPCCP Steel cylinder hydrostatic test.

In this embodiment, the steel cylinder 3 is connected outside the inner tank; according to the standard requirements, the inner tank needs to be used for steel cylinders with two lengths of 5m and 6m respectively, and the length of the main tank 2 is suitable for the hydraulic test of a 5m steel cylinder. Like the conventional steel cylinder 2 hydraulic liner, it has an independent water system and air system. The steel cylinder 2 socket section is equipped with a sealed air bag, the upper socket end and the rubber ring groove for sealing are set, and the top of the liner is sealed with water. The thickness of the disc 5 is calculated according to the design requirements, and the auxiliary tank 11 has its own relatively independent water system and air system.

In the utility model, a 5m-long PCCP steel cylinder is subjected to a hydrostatic test, the main tank 2 is used as a pressure test inner tank, a sealed air bag is placed on the top of the inner tank, a sealed rubber ring 4 is placed on the bottom, and the steel cylinder 3 is suspended. Put it on the outside of the inner tank from top to bottom to complete the hoisting of the steel cylinder 3 . The pressure test space of the steel cylinder 3 is sealed. The socket part is pressed against the rubber ring 4 at the bottom of the inner tank due to the gravity of the steel cylinder itself. After the steel cylinder 3 is placed in place, the sealing is automatically completed. Expand to complete the sealing of the steel cylinder 3 socket. Open the exhaust valve and water inlet valve, close the water outlet valve, and then inject water. When the exhaust valve is out of water, close the exhaust valve, start the upper pressure pump to reach the design pressure, stop automatically, keep the pressure constant, and complete the inlet and outlet required for the entire test. The process of water pressurization can carry out follow-up work.

With the operation method of the embodiment of the utility model, the hydraulic test is carried out on the 6m long PCCP steel cylinder. First, the auxiliary tank 11 is installed on the main tank 2, and the auxiliary tank 11 is lifted by the crane for hanging the steel cylinder 3, and placed on the At the top of the main tank 2, align the flange holes when placing it, and place the rubber ring 4 for sealing before placing it. After placing it, insert the bolts 6 respectively and tighten them in sequence to ensure the connection between the two inner tanks. Securely seal without leaking, connect the air system and water system of the auxiliary tank 11 with the main tank 2 and place them separately, the rubber ring 4 at the bottom of the main tank and the top of the auxiliary tank 11 seal the air bag, and start hoisting the steel cylinder after completion 3. From top to bottom, the steel cylinder 3 is set outside the main cylinder 2 and the auxiliary cylinder 11. The sealing of the socket section of the steel cylinder 3 is completed by the rubber ring 4 of the main cylinder 2. As above, the sealing of the socket section of the steel cylinder 3 is done by the auxiliary cylinder. The top airbag is completed, the details are as above; after the sealing is completed, water injection, upward pressure, and constant pressure are started to complete the process of water inlet and pressurization required for the entire test. Others are the same as the conventional steel cylinder 3 hydraulic test.

Claims (6)

1.PCCP steel cylinder sealing hydrostatic test machine, comprise socket chassis (1), main courage (2), cushion rubber (4), water shutoff dish (5), exhausr port (7), water pipe (8), gas-holder (9), on be installed with standby (10) and secondary courage (11), it is characterized in that, inner bag is single main courage (2), or lengthened by a longer main courage (2) and secondary courage (11) that at least one is shorter and link structure, the built-in ring flange in inner bag top is as water shutoff dish (5), the bottom of inner bag arranges a flange as socket chassis (1), inner bag external diameter is identical and be less than socket chassis (1) and water shutoff dish (5), water shutoff dish (5) begins to rehearse gas port (7), along installing cushion rubber (4) under water shutoff dish (5) outer rim, be connected with bolt (6) between inner bag top with water shutoff dish (5), bottom, socket chassis (1) connects tank by connecting water pipe (8), also connect simultaneously gas-holder (9) and on be installed with standby (10).

2. PCCP steel cylinder sealing hydrostatic test machine as claimed in claim 1, it is characterized in that, main courage (2) length is more than or equal to 5m steel cylinder hydraulic testing inner bag, secondary courage (11) long 1m.

3. PCCP steel cylinder sealing hydrostatic test machine as claimed in claim 1, is characterized in that, socket chassis (1) outer rim installs air bag.

4. PCCP steel cylinder sealing hydrostatic test machine as claimed in claim 1, it is characterized in that, secondary courage (11) is connected with bolt (6) with main courage (2).

5. PCCP steel cylinder sealing hydrostatic test machine as claimed in claim 1, it is characterized in that, water shutoff dish (5) is at the equally spaced connecting hole that open some of hoop.

6. PCCP steel cylinder sealing hydrostatic test machine as claimed in claim 1, is characterized in that, arrange the flange that a thickness is identical with socket chassis (1) in the bottom of secondary courage (11).