CN212748271U - Valve manifold for controlling pressure rise and pressure fall by adopting air pressure - Google Patents
Valve manifold for controlling pressure rise and pressure fall by adopting air pressure Download PDFInfo
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- CN212748271U CN212748271U CN202021030022.XU CN202021030022U CN212748271U CN 212748271 U CN212748271 U CN 212748271U CN 202021030022 U CN202021030022 U CN 202021030022U CN 212748271 U CN212748271 U CN 212748271U
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Abstract
The utility model discloses a valve manifold which adopts air pressure to control the pressure rise and the pressure fall, relating to the technical field of pressure test; the valve assembly comprises a water inlet, a water outlet, an air pressure proportional control valve, a pressure sensor, a bypass stop valve, a one-way valve, a main stop valve, a high-pressure filter, a manual stop valve and a pressure gauge, the air pressure proportional control valve and all necessary pressure control executing elements are used in a highly centralized mode, occupied space is greatly reduced, the existing pressure test requirements are met, the boosting rate and the multi-section boosting can be controlled in the boosting process, the pressure reducing rate and the multi-section pressure reducing can also be controlled in the pressure reducing process, and therefore the whole pressure reducing process is stable and controllable.
Description
Technical Field
The utility model relates to a pressure test technical field, in particular to utilize valve of low atmospheric pressure control high pressure lift pressure to converge.
Background
The valve assembly is designed to meet various pressure tests, and various necessary pressure control actuators (a check valve, a high-pressure unloading valve, a high-pressure stop valve, a high-pressure filter, a pressure gauge, a pressure sensor and the like) are planned to be highly integrated. When in use, only the inlet is connected with the high-pressure pump; the outlet is connected with a pressure test container to test the pressure. In the case of a pump used with a kit, various operations can be performed, such as: hoisting, bending, straightening, shearing, riveting, assembling, disassembling, some building construction, military construction and the like. It is used as the control part of hydraulic system, mainly has gas to control, and is by fluid (hydraulic oil, saponified oil, water, etc.) as the medium. The pressure testing integrated valve is simple to use, safe, reliable, complete in function and high in pressure maintaining precision, and can meet the pressure testing requirements of various products (such as pressure vessels, boilers, manifolds, valves, blowout preventers, wellhead pressure tests and the like).
At present, the working process of the existing integrated valve assembly is as follows, the initial state of the pressure test integrated valve is that a pump end unloading valve is opened, a container unloading valve is opened, a pneumatic stop valve is opened, and a manual stop valve is closed. At the moment, the pressure test pump is started, the pressure test medium flows back to the water tank through the pump end unloading valve, and the system and the pump are not under pressure. When pressure is required to be increased, the pump end unloading valve and the container unloading valve are closed, and high-pressure medium enters the pressure test container through the one-way valve, the pneumatic stop valve and the high-pressure filter. When the pressure testing target value is reached, the pressure of the pressure testing pump is unloaded by opening the unloading valve at the pump end, the pressure is maintained by the one-way valve at the moment, then the pneumatic stop valve is closed, and the pressure maintaining effect of the container is ensured by the pneumatic stop valve. When the pressure is relieved, the pneumatic stop valve is opened first, and then the container unloading valve is opened for unloading.
However, the prior device has the following defects: 1. in the boosting process, the boosting rate is uncontrollable, the boosting is slow due to the fact that water needs to be injected into the container when the boosting is started, and the pressure is likely to increase rapidly once a certain value is reached; 2, in the pressure reduction process, the pressure reduction rate is uncontrollable, and the pressure reduction rate is controlled due to the protection of the test container under specific conditions along with the improvement of the requirement of a user; 3. the precision of multistage pressure boost can not be controlled, and the precision of multistage pressure boost can be accurately controlled while multistage pressure boost is realized along with continuous updating of the market to meet the use requirements of users.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned current pile-up valve converges to exist, the utility model provides an utilize hydraulic system control part device of atmospheric pressure control buck-boost principle development, highly concentrate together various necessary pressure control executive component maximums, make its simple to use, occupation space is little, the function is perfect, the pressurize precision is high.
The utility model adopts the technical scheme as follows:
the utility model discloses a valve manifold for controlling pressure increase and reduction by adopting air pressure, which comprises a water inlet, a water outlet, an air pressure proportional control valve, a pressure sensor, a bypass stop valve, a one-way valve, a main path stop valve, a high-pressure filter, a manual stop valve and a pressure gauge, wherein the initial state of the integrated valve manifold in the structure is that the air pressure proportional control valve is opened, the bypass stop valve is opened, the main path stop valve is opened, and the manual stop valve is closed;
a water inlet, a pressure sensor, a one-way valve, a main circuit stop valve, a high-pressure filter, a pressure gauge, a pressure sensor and a water outlet are sequentially arranged on the valve manifold main circuit, the pressure sensor P1 is arranged among the one-way valve, the bypass stop valve and the air pressure proportional control valve, and the pressure sensor P2 is arranged at the water outlet at the tail end of the valve manifold; the manual stop valve is arranged between the high-pressure filter and the pressure gauge, the manual stop valve is closed when the integrated valve is in an initial state, and the manual stop valve is opened to control pressure when the pressure is out of control;
the air pressure proportional control valve is arranged at the valve water converging inlet; one end of the air pressure proportional control valve is connected with the one-way valve and communicated with the high-pressure filter, and the other end of the air pressure proportional control valve is connected with the bypass stop valve and communicated with the high-pressure filter; one end of the bypass stop valve is simultaneously connected with the pressure sensor and the air pressure proportional control valve at the water inlet, and the other end of the bypass stop valve is communicated with the high-pressure filter. When the pressure is increased, the air pressure proportional control valve is properly closed, part of high-pressure medium enters a pressure test container through the one-way valve, the bypass stop valve, the main path stop valve and the high-pressure filter, and when the test container is filled with the medium and reaches a pressure-increasing target value, the air pressure proportional control valve is completely opened and then slowly closed to increase the pressure;
when the pressure is reduced, the bypass stop valve and the main path stop valve are kept in a closed state, the air pressure proportional control valve keeps the original opening degree to start the pump, when the pressure value is consistent with the pressure in the container, the main path stop valve and the bypass stop valve are opened, and the opening degree of the air pressure proportional control valve is gradually increased to achieve the effect of slow pressure reduction; the air pressure proportional control valve has double functions of pressure regulation and unloading in the whole valve manifold structure.
The technical effects of the utility model are as follows:
the boosting rate of the existing integrated valve is uncontrollable in the boosting process; in the process of reducing the pressure, the pressure reduction rate can not be controlled; the precision of multi-stage boosting cannot be controlled; aiming at the problems of the existing integrated valve, a hydraulic system control part device developed by utilizing the principle of controlling the pressure to rise and fall is designed; the utility model discloses occupation space can be reduced by a wide margin, when satisfying current pressure test requirement, can also control its speed and the multistage pressure boost of stepping up in the pressure boost in-process, also can control its speed and the multistage formula of stepping down when stepping down to make whole lift and step down the process more steady controllable.
Drawings
FIG. 1 is a schematic diagram of a controllable pressure-increasing/decreasing valve manifold structure developed by using a pressure-controlled pressure-increasing/decreasing principle;
1-a main path stop valve, 2-a water outlet, 3-a pressure sensor, 4-a manual stop valve, 5-a pressure gauge,
6-air pressure proportional control valve, 7-water inlet, 8-bypass stop valve, 9-one-way valve and 10-high pressure filter;
FIG. 2 is a top view of a controllable buck-boost valve manifold developed using the principle of pressure controlled buck-boost;
1-a main path stop valve, 2-a water outlet, 3-a pressure sensor, 4-a manual stop valve, 5-a pressure gauge,
6-air pressure proportional control valve, 7-water inlet, 8-bypass stop valve, 9-one-way valve and 10-high pressure filter.
Detailed Description
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
In the embodiment, the integrated valve manifold is in an initial state that the air pressure proportional control valve is opened, the bypass stop valve is opened, the main path stop valve is opened and the manual stop valve is closed;
when the pressure needs to be increased, the air pressure proportional control valve is properly closed, and part of high-pressure medium enters a pressure test container through the one-way valve, the bypass stop valve, the main path stop valve and the high-pressure filter;
further, when the pressure reaches the initial set pressure test target value, the air pressure proportional control valve is completely opened and then slowly closed to boost the pressure, and when the pressure reaches the target value, the bypass stop valve is closed after the main stop valve is closed and finally the pump is stopped for pressure maintaining, so that the main stop valve, the one-way valve and the bypass stop valve can maintain the pressure and the precision of the pressure maintaining effect is greatly improved.
When the pressure is reduced, the bypass stop valve and the main path stop valve are kept in a closed state, and the air pressure proportional valve keeps the original opening degree for starting the pump;
further, when the pressure value is consistent with the pressure in the container, the main path stop valve is opened, and the opening degree of the air pressure proportional control valve is slowly increased to achieve the effect of slow pressure reduction.
In the embodiment, after the current pressure target pressure maintaining time is up, the bypass stop valve and the main path stop valve are kept in a closed state, and the air pressure proportional valve keeps the original opening degree for starting the pump;
further, when the pressure value is consistent with the pressure in the container, opening the main path stop valve to continue pressurization until the pressure value reaches a second section of target pressure value, closing the main path stop valve, stopping pumping and maintaining pressure;
when the pressure is reduced in multiple stages, after the pressure maintaining time of the current pressure target reaches, the bypass stop valve and the main path stop valve are kept in a closed state continuously, and the air pressure proportional control valve keeps the original opening degree firstly to start the pump;
and further, when the pressure value is consistent with the pressure in the container, the main path stop valve and the bypass stop valve are opened, the opening and closing degree of the air pressure proportional control valve is slowly increased to slowly reduce the pressure, and the main path stop valve is closed firstly and then the bypass stop valve is closed to stop pumping and maintaining the pressure until the second section of target pressure value is reached.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides an adopt atmospheric pressure to control valve of pressure rise and fall and converge, its characterized in that, the valve converges including water inlet (7), delivery port (2), atmospheric pressure proportional control valve (6), pressure sensor (3), bypass stop valve (8), check valve (9), main road stop valve (1), high pressure cleaner (10), manual stop valve (4), manometer (5), the valve converges and sets gradually water inlet (7), pressure sensor (3), check valve (9), main road stop valve (1), high pressure cleaner (10), manometer (5), pressure sensor (3), delivery port (2) on the main road.
2. Valve manifold using gas pressure to control the pressure rise or fall according to claim 1, characterized in that a manual shut-off valve (4) is arranged between the high-pressure filter (10) and the pressure gauge (5).
3. The valve manifold for controlling pressure rise and pressure drop by using air pressure as claimed in claim 1, characterized in that an air pressure proportional control valve (6) is arranged at the water inlet (7).
4. The valve manifold for controlling pressure rising and reducing by using air pressure as claimed in claim 3, characterized in that the air pressure proportional control valve (6) is connected with a check valve (9) to a high pressure filter (10) at one end and connected with a bypass stop valve (8) to the high pressure filter (10) at the other end.
5. The valve manifold for controlling pressure rise and pressure drop by using air pressure as claimed in claim 1, characterized in that the bypass cut-off valve (8) is connected with the pressure sensor (3) and the air pressure proportional control valve (6) at the water inlet (7) at the same time at one end and is communicated with the high-pressure filter (10) at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030022.XU CN212748271U (en) | 2020-06-08 | 2020-06-08 | Valve manifold for controlling pressure rise and pressure fall by adopting air pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021030022.XU CN212748271U (en) | 2020-06-08 | 2020-06-08 | Valve manifold for controlling pressure rise and pressure fall by adopting air pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212748271U true CN212748271U (en) | 2021-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021030022.XU Active CN212748271U (en) | 2020-06-08 | 2020-06-08 | Valve manifold for controlling pressure rise and pressure fall by adopting air pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212748271U (en) |
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2020
- 2020-06-08 CN CN202021030022.XU patent/CN212748271U/en active Active
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