CN212110950U - Low pressure water device is filled fast to steel pipe hydrostatic test machine - Google Patents
Low pressure water device is filled fast to steel pipe hydrostatic test machine Download PDFInfo
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- CN212110950U CN212110950U CN201922384233.7U CN201922384233U CN212110950U CN 212110950 U CN212110950 U CN 212110950U CN 201922384233 U CN201922384233 U CN 201922384233U CN 212110950 U CN212110950 U CN 212110950U
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Abstract
The utility model provides a low-pressure water fast filling device of a steel pipe hydrostatic testing machine, which comprises a water pressure pump, a one-way valve, a liquid filling tank, a high liquid level controller, a low liquid level controller, an air inlet ball valve, an air outlet ball valve, a control valve and other components and a control system; filling water into the liquid filling tank through a low-pressure water pump, and when the water level rises to a high liquid level, sending a signal to a liquid level controller to stop filling water into the liquid filling tank; at this time, the liquid filling tank is filled with compressed air from the upper part of the liquid filling tank, and the compressed air is filled in a high liquid level state; when the valve is opened, the compressed air expands in volume, the pressure is released, and the water is pressed into the steel pipe; when the liquid level in the liquid filling tank is low, the liquid level controller sends a signal to continuously replenish water into the liquid filling tank until the liquid level is high.
Description
Technical Field
The utility model belongs to steel pipe hydrostatic test machine field, concretely relates to low pressure water device is filled fast to steel pipe hydrostatic test machine.
Background
The steel pipe hydrostatic testing machine is a device which is used for bearing a certain pressure inside a steel pipe by filling low-pressure water and filling high-pressure water, testing the pressure resistance of the steel pipe and eliminating the internal stress of the steel pipe. At present, low-pressure water is filled in the steel pipe mainly through a low-pressure water pump during the test of the hydraulic press, and the filling speed is low, so that the time of testing a single steel pipe by the hydraulic press is long, and the requirement of rhythm of the modern hydraulic press cannot be met. Because the steel pipe needs a large amount of water in the twinkling of an eye when filling low pressure water, if adopt many water pumps or large-traffic water pump to solve this problem, can appear when need not fill water, the water pump off-load to waste a large amount of energy. Therefore, a great amount of low-pressure water is needed to be released instantly when the steel pipe needs to be filled with the low-pressure water, and energy is stored when the steel pipe does not need to be filled with the low-pressure water.
SUMMERY OF THE UTILITY MODEL
To the above situation, the utility model aims to: the utility model provides a low pressure water device is filled fast to steel pipe hydrostatic testing machine, it can provide large-traffic low pressure water instantaneously, automatic energy storage at ordinary times, the device of energy saving.
In order to realize the purpose, the technical scheme of the utility model is that: the device consists of a water pressure pump, a one-way valve, a liquid filling tank, a high liquid level controller, a low liquid level controller, an air inlet ball valve, an air outlet ball valve, a control valve and other parts and a control system; wherein, two sides below the liquid filling tank are correspondingly connected with pipelines, one side of the liquid filling tank is connected with a low-pressure water pump, the other side of the liquid filling tank is connected with a steel pipe, and the pipeline connected with the steel pipe is provided with a control valve; and a pipeline is arranged above the liquid filling tank, the other end of the pipeline is a parallel pipeline, one pipeline is provided with a gas discharging ball valve, and the other pipeline is provided with a gas inlet ball valve and is connected with a compressed gas source.
A high liquid level controller and a low liquid level controller are distributed at the positions of two trisection points on the side wall of the liquid filling tank from top to bottom; the liquid filling tank is provided with a pressure sensor for detecting the pressure in the liquid filling tank.
The control system is respectively connected with the high liquid level controller, the low liquid level controller, the pressure sensor, the one-way valve, the air inlet ball valve, the air outlet ball valve and the control valve; the control system receives signals tested by the high liquid level controller, the low liquid level controller and the pressure sensor and controls the opening and closing of the check valve, the air inlet ball valve, the air outlet ball valve and the control valve.
When the water level rises to a high liquid level, the liquid level controller sends a signal to stop filling water into the liquid filling tank; at the moment, the liquid filling tank is filled with compressed air from the upper part of the liquid filling tank, the compressed air is filled to 5bar under the state of high liquid level, and the pressure in the whole liquid filling tank is 5 bar; when the valve is opened, the compressed air expands in volume, the pressure is released, and the water is pressed into the steel pipe; when the liquid level in the liquid charging tank is low, the liquid level controller sends a signal to continuously supply water into the liquid charging tank until the liquid level is high; during the water replenishing process, the air with increased volume in the liquid charging tank is compressed again, and the pressure returns to 5bar again.
The advantage of this is that the low pressure water can be injected into the steel pipe instantaneously by the compressed air in the liquid charging tank. When the steel pipe does not need to be filled with water, the low-pressure water pump is used for filling water into the liquid filling tank to store energy. When the liquid filling tank fills water to a high liquid level, the low-pressure water pump stops, and energy is saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. a low-pressure water pump; 2. a low level controller; 3. a high level controller; 4. a liquid filling tank; 5. a one-way valve; 6. a deflation ball valve; 7. an intake ball valve; 8. compressing a gas source; 9. a control valve; 10. and (5) steel pipes.
Detailed Description
As shown in fig. 1, the utility model provides a quick low pressure water filling device for steel pipe hydrostatic test, which comprises a low pressure water pump 1, a low level controller 2, a high level controller 3, a liquid filling tank 4, a one-way valve 5, a gas discharging ball valve 6, a gas inlet ball valve 7 and a control valve 8; wherein, two sides below the liquid filling tank 4 are correspondingly connected with a pipeline, one side of the pipeline is connected with the low-pressure water pump 1 through a one-way valve 5, and the other side of the pipeline passes through a control valve 9 and is connected with a steel pipe 10; and a pipeline is arranged above the liquid filling tank, the other end of the pipeline is a parallel pipeline, one pipeline is provided with a gas discharging ball valve 6, and the other pipeline is provided with a gas inlet ball valve 7 and is connected with a compressed gas source 8.
In the initial state, the liquid filling tank is empty, the control valve is closed, and the low-pressure water pump is started to fill water into the liquid filling tank; and stopping filling water into the liquid filling tank until the high liquid level controller sends a signal. At the moment, the upper part of the liquid filling tank is compressed air, and the lower part of the liquid filling tank is water; the inlet ball valve was opened and the tank was filled with compressed air to 5 bar. The pressure in the entire liquid-filled tank is then 5 bar. When the valve is opened, the compressed air expands in volume, the pressure is released, and the water is pressed into the steel pipe. When the liquid level in the liquid filling tank is low, the liquid level controller sends a signal to continuously replenish water into the liquid filling tank until the liquid level is high. During the water replenishing process, the air with increased volume in the liquid charging tank is compressed again, and the pressure returns to 5bar again. The compressed air only needs to be injected once. The initial pressure of the compressed air can be adjusted by opening and closing the intake and bleed ball valves.
The utility model discloses can be applicable to spiral welded tube hydrostatic testing machine, straight welded tube hydrostatic testing machine, seamless pipe hydrostatic testing machine, cast tube hydrostatic testing machine etc..
Claims (2)
1. A low-pressure water fast filling device of a steel pipe hydrostatic testing machine is composed of a water pressure pump, a one-way valve, a liquid filling tank, a high liquid level controller, a low liquid level controller, a pressure sensor, an air inlet ball valve, an air outlet ball valve, a control valve and a control system; the device is characterized in that two sides below the liquid filling tank are correspondingly connected with pipelines, one side of the liquid filling tank is connected with a low-pressure water pump through a one-way valve, the other side of the liquid filling tank is connected with a steel pipe, and a control valve is arranged on the pipeline connected with the steel pipe; a pipeline is arranged above the liquid filling tank, parallel pipelines are arranged at the other end of the pipeline, a deflation ball valve is arranged on one pipeline, and an air inlet ball valve is arranged on the other pipeline and is connected with a compressed air source;
a high liquid level controller and a low liquid level controller are distributed at the positions of two trisection points on the side wall of the liquid filling tank from top to bottom; the liquid filling tank is provided with a pressure sensor;
the control system is respectively connected with the high liquid level controller, the low liquid level controller, the pressure sensor, the one-way valve, the air inlet ball valve, the air outlet ball valve and the control valve; the control system receives signals tested by the high liquid level controller, the low liquid level controller and the pressure sensor and controls the opening and closing of the check valve, the air inlet ball valve, the air outlet ball valve and the control valve.
2. The device for rapidly filling low pressure water for the steel pipe hydrostatic testing machine according to claim 1, is characterized in that: the pressure threshold of the charge tank is set to 5 bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922384233.7U CN212110950U (en) | 2019-12-26 | 2019-12-26 | Low pressure water device is filled fast to steel pipe hydrostatic test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922384233.7U CN212110950U (en) | 2019-12-26 | 2019-12-26 | Low pressure water device is filled fast to steel pipe hydrostatic test machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212110950U true CN212110950U (en) | 2020-12-08 |
Family
ID=73624683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922384233.7U Active CN212110950U (en) | 2019-12-26 | 2019-12-26 | Low pressure water device is filled fast to steel pipe hydrostatic test machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212110950U (en) |
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2019
- 2019-12-26 CN CN201922384233.7U patent/CN212110950U/en active Active
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