CN210037397U - Water guide device for gas cylinder hydrostatic test - Google Patents

Abstract

The utility model discloses a gas cylinder hydrostatic test water guide device that uses in the pressure gas cylinder production process. The device includes high pressure water route, compressed air pipeline and threaded connection at the end plug of gas cylinder bottleneck, and the end plug is the aqueous vapor double port, including mouth of a river and gas port, fast-assembling female head is connected to the mouth of a river to through the public head of fast-assembling female head connection high pressure water route, realize being connected with high pressure water route. The air port is connected with the air path high pressure valve and is connected or disconnected with the compressed air pipeline through the air path high pressure valve. A four-way joint is designed on the high-pressure water path and is respectively connected with a water path I, a water path II, a water path III and a water path IV. After the pressure testing gas cylinder is filled with water, the water overflows from the gas port, so that no air exists in the gas cylinder, and the harm of the air to the pressure testing is avoided. The water in the gas cylinder after the hydrostatic test is injected into the gas cylinder to be tested by compressed air, so that the time is saved, the labor efficiency is improved, and the burden of the overhead travelling crane is greatly solved.

Description

Water guide device for gas cylinder hydrostatic test

Technical Field

The utility model discloses be applied to gas cylinder production field, relate to a water guide device after gas cylinder hydrostatic test, the large capacity gas cylinder of specially adapted.

Background

In the manufacture and periodic inspection of pressure vessels, hydrostatic testing is a necessary production or inspection process, especially for seamless gas cylinders of long tube trailers that transport natural gas. And after the hydrostatic test is finished, the gas cylinder is lifted out of the water jacket by using a crown block, and then the gas cylinder is inclined to pour water. And then putting the replaced new bottle into the water jacket by using the crown block, injecting water into the gas bottle by the gear pump through the water pipe, screwing the end plug after the water in the gas bottle overflows, and preparing for pressure testing. This hydrostatic test mode of operation has the following disadvantages: 1) the whole process is long in time from the completion of the pressure test of the previous gas cylinder to the start of the pressure test of the next gas cylinder; 2) air is easy to press in when the end plug is screwed on, if air is mixed in the hydrostatic test, the expansion coefficient measured by the hydrostatic test can be increased, the pressure test result is influenced, and the steel cylinder which meets the use requirement originally can be scrapped when the pressure test result is serious; 3) after the hydrostatic test is completed, the gas cylinder is full of water, and the weight of the test water cannot be ignored for a large-volume gas cylinder. For example, for gas cylinders with volume greater than 50m for carrying out heavy planting, the weight is increased by more than 50 tons, and the requirement for hoisting of a crown block is greatly improved.

Disclosure of Invention

The utility model discloses a solve above-mentioned problem, provide a water guide device in leading-in gas cylinder of waiting to test fast of water in will accomplishing the hydrostatic test gas cylinder, prevent simultaneously that the air from sneaking into the pressure water of trying.

The utility model adopts the technical proposal that: the water guide device for the hydraulic test of the gas cylinder comprises a high-pressure water path, a compressed air pipeline and an end plug in threaded connection with the opening of the gas cylinder, wherein the end plug is a water-gas double-port end plug and comprises a water inlet for water and a gas outlet for air and air, the water inlet is connected with a fast-assembling female head, and the fast-assembling female head is connected with a fast-assembling male head of the high-pressure water path through the fast-assembling female head, so that the connection with. The air port is connected with the air path high-pressure valve and is connected or disconnected with the compressed air pipeline through the air path high-pressure valve. The design has the cross on high pressure water path, connects water route I, water route II, water route III and water route IV respectively, and high-pressure valve III and fast-assembling public head II are connected to water route I, and high-pressure valve I and gear pump are connected to water route II, and high-pressure valve II and high-pressure pump are connected to water route III, and high-pressure valve IV and fast-assembling public head I are connected to water route IV.

The utility model has the advantages that: after the pressure testing gas cylinder is filled with water, the water overflows from the gas port, so that no air exists in the gas cylinder, and the harm of the air to the pressure testing is avoided. The water in the gas cylinder after the hydrostatic test is injected into the gas cylinder to be tested by compressed air, so that the time is saved, the labor efficiency is improved, and the burden of the overhead travelling crane is greatly solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

figure 2 is a schematic view of an end plug construction;

in the figure, 1-a water jacket, 3-a gas cylinder I, 4-a end plug I, 5-a gas path high pressure valve I, 6-a high pressure valve I, 7-a high pressure valve II, 8-a high pressure valve III, 9-a quick-assembly female head I, 10-a quick-assembly male head I, 11-a water path I, 12-a water path II, 13-a gas cylinder II, 14-a gear pump, 15-a high pressure pump, 16-a gas port, 17-a water port, 18-a four-way joint, 19-a water path III, 20-a water path IV, 21-an end plug II, 22-a quick-assembly female head II, 23-a quick-assembly male head II, 24-a gas path high pressure valve II and 25-.

Detailed Description

The utility model discloses a high pressure water route, compressed air pipeline and install the end plug at the bottleneck. FIG. 1 is the utility model discloses the schematic structure drawing, the vertical putting in water jacket 1 of gas cylinder I3 that hydrostatic test accomplished, treat that hydrostatic test's gas cylinder II 13 places outside water jacket 1, install end plug I4 and end plug II 21 at the bottleneck department screw thread of gas cylinder I3 and gas cylinder II 13. The structure of the end plug is shown in figure 2, and the end plug is a water-gas double-port end plug, one port of the end plug is a water port 17 for water inlet and outlet, and the other port of the end plug is a gas port 16 for gas inlet and outlet. The water gap 17 is connected with the fast-assembly female head and is connected with a high-pressure water path through the fast-assembly female head. The air port 16 is connected with an air path high pressure valve and connected or disconnected with a compressed air path through the air path high pressure valve.

A four-way valve 18 is designed on a high-pressure water path and connected with four water paths, namely a water path I11, a water path II 12, a water path III 19 and a water path IV 20, wherein the water path I11 is connected with a high-pressure valve III 8 and a quick-assembly male head II 23, the water path II 12 is connected with a high-pressure valve I6 and a gear pump 14, the water path III 19 is connected with a high-pressure valve II 7 and a high-pressure pump 15, and the water path IV 20 is connected with a quick-assembly male head I10 and.

Before hydrostatic test, pressure testing gas cylinder I3 is vertical to be put in water jacket 1, seals with water jacket cover 2, connects female first I9 of fast-assembling and public first I10 of fast-assembling, opens high-pressure valve IV 25 and high-pressure valve I6, closes high-pressure valve II 7 and high-pressure valve III 8, opens gas circuit high-pressure valve I5, does not connect the compressed air pipeline, starts gear pump 14, to the water injection in the gas cylinder I3. After water is filled, the water overflows from the gas circuit high-pressure valve 5, the gas circuit high-pressure valve I5 is closed, no air exists in the gas cylinder I3, and the harm of the air to pressure testing is avoided. And (4) stopping the gear pump 14, closing the high-pressure valve I6, opening the high-pressure valve II 7 and the high-pressure pump 15, and starting the hydraulic test.

And after the hydrostatic test is finished, stopping the high-pressure pump 15, closing the high-pressure valve II 7, connecting the air passage high-pressure valve I5 with a compressed air pipeline, and connecting the quick-assembly female head II 22 and the quick-assembly male head II 23 of the air bottle II 13. And opening the air path high-pressure valve I5, the air path high-pressure valve II 24 and the high-pressure valve III 8, and pressing the water in the air bottle I3 into the air bottle II 13 by using the compressed air. The pressure of the compressed air pipeline is about 0.7MPa and is higher than the water supply pressure of the gear pump, the water injection speed of the air bottle II 13 is higher than the water supply speed of the gear pump, the water outlet and the water injection of the two air bottles are carried out simultaneously, the operation saves time and improves labor efficiency. And after the water guiding operation is finished, disconnecting the quick-assembly female head I9 and the quick-assembly male head I10, lifting the gas cylinder I3 out of the water jacket 1, lifting the gas cylinder II 13 into the water jacket, repeating the water injection operation, and starting a new water pressure test. The quick-assembly male head I10 is ready to be connected with the next gas cylinder to be tested.

To big volume gas cylinder, for example, be greater than the gas cylinder of 50m dry year, water emits from gas cylinder I3, pours into gas cylinder II 13 into, and the weight of gas cylinder I3 reduces, but the weight increase of gas cylinder II 13, and this kind of mode is the most reasonable with water divide respectively half, but the weight that every gas cylinder increases 25 tons also is the burden to the overhead traveling crane, so the utility model discloses when using, should increase a water jacket, will treat in advance that hydrostatic test's gas cylinder puts into in the water jacket, the overhead traveling crane every time hangs heavy for a gas cylinder empty bottle weight can like this, has solved the burden of overhead traveling crane greatly.

Claims (1)

1. The utility model provides a gas cylinder hydrostatic test water guide device, includes high-pressure water route and compressed air pipeline, its characterized in that: the quick-assembly type gas cylinder is characterized by further comprising an end plug in threaded connection with the opening of the gas cylinder, wherein the end plug is a water-gas double-port end plug and comprises a water port (17) and a gas port (16), the water port (17) is connected with the quick-assembly female head, and the quick-assembly female head is connected with a high-pressure water path; the air port (16) is connected with the air path high-pressure valve and is connected or disconnected with the compressed air pipeline through the air path high-pressure valve; high pressure water route design has cross (18), cross (18) are connected water route I (11), water route II (12), water route III (19) and water route IV (20), high-pressure valve III (8) and fast-assembling public first II (23) are connected in water route I (11), high-pressure valve I (6) and gear pump (14) are connected in water route II (12), high-pressure valve II (7) and high-pressure pump (15) are connected in water route III (19), high-pressure valve IV (25) and fast-assembling public first I (10) are connected in water route IV (20).

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