CN215115151U - Device structure for testing durability of pressure stabilizing valve - Google Patents
Device structure for testing durability of pressure stabilizing valve Download PDFInfo
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- CN215115151U CN215115151U CN202121679066.XU CN202121679066U CN215115151U CN 215115151 U CN215115151 U CN 215115151U CN 202121679066 U CN202121679066 U CN 202121679066U CN 215115151 U CN215115151 U CN 215115151U
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Abstract
The utility model belongs to the technical field of the LNG air feed, specifically be a test surge damping valve durability device structure, it includes: the pressure-stabilizing device comprises a gas storage tank 1, a gas storage tank 2 and a pressure-stabilizing valve to be tested, wherein the input end of the gas storage tank 1 is connected with a stop valve V3, a solenoid valve V1 and a gas source, a pressure gauge 1 is arranged on the gas storage tank 1, the output ends of the gas storage tank 1 are connected in parallel in two ways, and one way is connected with a stop valve V4, the pressure gauge, a pressure sensor, a solenoid valve V2 and a PLC (programmable logic controller) component; the gas storage tank 2 is connected to the other path of the output end of the gas storage tank 1, and the gas storage tank 2 is connected with a pressure gauge 2 and a stop valve V5; the tested pressure stabilizing valve is arranged on one path connected with the gas storage tank 2, and can indirectly adjust the testing time and the required amount of nitrogen control resources; two solenoid valves V1, V2 in the PLC control assembly, when pressure reaches the PLC set pressure condition in the test, PLC control system can close solenoid valve V1 in the twinkling of an eye and stop the air feed, open solenoid valve V2 and release the pressure to this circulation, and the gas consumption can be saved to this design.
Description
Technical Field
The utility model relates to a LNG air feed technical field specifically is a test surge damping valve durability device structure.
Background
The pressure stabilizing valve required by the vehicle-mounted LNG supply module adopts the opening degree of the opening and closing piece in the control valve body to adjust the flow rate of a medium, reduces the pressure of the medium, adjusts the opening degree of the opening and closing piece by means of the pressure behind the valve, keeps the pressure behind the valve within a certain range, keeps the outlet pressure within a set range under the condition that the inlet pressure is continuously changed, and provides a stable gas source for a gas vehicle engine. Therefore, the durability of the pressure stabilizing valve is one of important indexes for maintaining the experience perceptibility of the customer.
The design of the existing scheme is not enough:
the start control ball valve is positioned at the rear end of the tested pressure stabilizing valve, and if the trigger pressure value set by the PLC control unit is the same as the pressure stabilizing value set by the tested pressure stabilizing valve, whether the pressure stabilizing valve is effective or not cannot be determined;
if the trigger pressure value set by the PLC control unit is smaller than the set pressure value of the tested pressure stabilizing valve, the PLC controls the pneumatic ball valve to be possibly in an open state for discharging pressure for a long time, so that the pressure value displayed by a pressure gauge at the rear end of the pressure stabilizing valve is smaller than the set pressure value of the tested pressure stabilizing valve, and whether the tested pressure stabilizing valve works or not cannot be determined;
if the trigger pressure value set by the PLC control unit is larger than the set pressure stabilizing value of the tested pressure stabilizing valve, the gas pressure at the rear end of the tested pressure stabilizing valve can not reach the opening and pressure discharging condition of the pneumatic ball valve controlled by the PLC, and therefore whether the tested pressure stabilizing valve works or not can not be determined.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
The utility model discloses in view of above-mentioned and/or the problem that exists in the current on-vehicle LNG air feed, provided.
Therefore, the utility model aims at providing a test surge damping valve durability device structure saves the resource: the opening size of a stop valve V4 in the connecting equipment controls the pressure relief strength in the test process, so that the test time and the required amount of nitrogen control resources can be indirectly adjusted; when the pressure in the test reaches the pressure condition set by the PLC, the PLC control system can instantly close the electromagnetic valve V1 to stop gas supply and open the electromagnetic valve V2 to release pressure, and the gas consumption can be saved by the design in a circulating manner; it is rational in infrastructure: the connecting position of the pressure stabilizing valve of the device and the PLC component are not in the same pipeline, and the design scheme can more accurately determine whether the pressure stabilizing is effective or not in the pressure stabilizing valve test.
For solving the technical problem, according to the utility model discloses an aspect, the utility model provides a following technical scheme:
a device structure for testing the durability of a pressure stabilizing valve comprises:
the input end of the gas storage tank 1 is connected with a stop valve V3, a solenoid valve V1 and a gas source, a pressure gauge 1 is arranged on the gas storage tank 1, the output ends of the gas storage tank 1 are connected in parallel in two ways, and one way is connected with a stop valve V4, the pressure gauge, a pressure sensor, a solenoid valve V2 and a PLC (programmable logic controller) component;
the gas storage tank 2 is connected to the other path of the output end of the gas storage tank 1, and the gas storage tank 2 is connected with a pressure gauge 2 and a stop valve V5;
and the tested pressure stabilizing valve is arranged on one path connected with the gas storage tank 2 and is arranged between the gas storage tank 1 and the gas storage tank 2.
As a test surge damping valve endurance quality device structure an preferred scheme, wherein: the gas storage tank 1 and the gas storage tank 2 are connected with a tested pressure stabilizing valve through a steel pipe through a nut and a joint.
As a test surge damping valve endurance quality device structure an preferred scheme, wherein: under the test state, the stop valve V3 is in a fully open state, the stop valve V5 is in a fully closed state, and the stop valve V4 is in an open state.
As a test surge damping valve endurance quality device structure an preferred scheme, wherein: the PLC component is connected with the electromagnetic valve V1 and the electromagnetic valve V2.
Compared with the prior art: the utility model discloses save the resource: the opening size of a stop valve V4 in the connecting equipment controls the pressure relief strength in the test process, so that the test time and the required amount of nitrogen control resources can be indirectly adjusted; when the pressure in the test reaches the pressure condition set by the PLC, the PLC control system can instantly close the electromagnetic valve V1 to stop gas supply and open the electromagnetic valve V2 to release pressure, and the gas consumption can be saved by the design in a circulating manner; it is rational in infrastructure: the connecting position of the pressure stabilizing valve of the device and the PLC component are not in the same pipeline, so that whether pressure stabilization is effective or not in the pressure stabilizing valve test can be determined more accurately.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor. Wherein:
fig. 1 is a schematic view of the connection structure of the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways than those specifically described herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of explanation, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The utility model provides a test surge damping valve durability device structure saves the resource: the opening size of a stop valve V4 in the connecting equipment controls the pressure relief strength in the test process, so that the test time and the required amount of nitrogen control resources can be indirectly adjusted; when the pressure in the test reaches the pressure condition set by the PLC, the PLC control system can instantly close the electromagnetic valve V1 to stop gas supply and open the electromagnetic valve V2 to release pressure, and the gas consumption can be saved by the design in a circulating manner; it is rational in infrastructure: this device surge damping valve hookup location and PLC subassembly are not in same pipeline, and whether this design can more accurate definite surge damping valve test steady voltage is effective, please refer to fig. 1, include:
the input end of the gas storage tank 1 is connected with a stop valve V3, a solenoid valve V1 and a gas source, a pressure gauge 1 is arranged on the gas storage tank 1, the output end of the gas storage tank 1 is connected in parallel in two ways, and one way is connected with a stop valve V4, the pressure gauge, a pressure sensor, a solenoid valve V2 and a PLC component;
the gas storage tank 2 is connected to the other path of the output end of the gas storage tank 1, and the gas storage tank 2 is connected with a pressure gauge 2 and a stop valve V5;
the tested pressure stabilizing valve is arranged on one path connected with the gas storage tank 2, and the tested pressure stabilizing valve is arranged between the gas storage tank 1 and the gas storage tank 2.
The gas storage tank 1 and the gas storage tank 2 are connected with a tested pressure stabilizing valve through a steel pipe through a nut and a joint.
In the test state, the cut-off valve V3 is in the fully open state, the cut-off valve V5 is in the fully closed state, and the cut-off valve V4 is in the open state.
The method for automatically testing the durability of the pressure stabilizing valve comprises the following steps:
connecting equipment according to the figure 1, and electrifying the PLC component;
the nitrogen cylinder group provides a stable nitrogen source with 1.3MPa (which can be adjusted according to the required pressure), the initial electromagnetic valve V1 is in an open state, the stop valve V3 is in a complete open state, and nitrogen flows through the gas storage tank 1 through a pipeline and then is divided into two paths to discharge gas;
one path of nitrogen passes through a pressure stabilizing valve (which is set to be 0.9MPa according to a required setting value in the example) to a lower gas storage tank 2, a pressure gauge 2 displays that the current pressure value of the gas storage tank 2 is the pressure value of the nitrogen after pressure stabilization of the pressure stabilizing valve, and if the pressure value is the set value of the pressure stabilizing valve before being 0.9MPa, the pressure stabilizing performance of the pressure stabilizing valve is good;
the two paths of nitrogen gas pass through a stop valve V4 (the opening size is adjusted according to actual conditions), a pressure gauge and a pressure sensor (the setting value of the example is 1.2MPa), and an electromagnetic valve V2 (the initial state is a completely closed state);
in the embodiment, when the pressure value of the pressure gauge reaches 1.2MPa, the sensor transmits a signal to the PLC, the PLC simultaneously controls the electromagnetic valve V2 to open and exhaust, the electromagnetic valve V1 is closed to stop air supply, the opening of the electromagnetic valve V1 lasts for 5s (a set value), and the pressure of the air inlet end of the pressure stabilizing valve in 5s is smaller than the pressure of the output end by setting the opening size of the stop valve V4, so that the nitrogen at the rear end of the pressure stabilizing valve is exhausted in a reverse flow manner and reduced in pressure;
after 5s, the PLC controls the electromagnetic valve V2 to be closed, the electromagnetic valve V1 is opened, at the moment, the front pressure and the rear pressure of the pressure stabilizing valve in the pressure stabilizing equipment are both smaller than 0.9MPa, when a nitrogen source in the nitrogen bottle group is output, the pressure in the equipment is increased, and the pressure stabilizing valve is cyclically reciprocated to test the durability of the pressure stabilizing valve.
1. The output pressure releasing end of the PLC control assembly and a pressure stabilizing valve connecting pipeline are connected in parallel in two ways behind the gas storage tank.
2. The connection sequence and the connection form of a CPU main control, a pressure gauge, a pressure sensor and electromagnetic valves V1 and V2 in the PLC control assembly.
3. And the opening and closing sequence and conditions of the electromagnetic valves V1 and V2 in the PLC control assembly during work.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, as long as there is no structural conflict, the various features of the disclosed embodiments of the present invention can be used in any combination with each other, and the non-exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. The utility model provides a test surge damping valve durability device structure which characterized in that includes:
the input end of the gas storage tank 1 is connected with a stop valve V3, a solenoid valve V1 and a gas source, a pressure gauge 1 is arranged on the gas storage tank 1, the output ends of the gas storage tank 1 are connected in parallel in two ways, and one way is connected with a stop valve V4, the pressure gauge, a pressure sensor, a solenoid valve V2 and a PLC (programmable logic controller) component;
the gas storage tank 2 is connected to the other path of the output end of the gas storage tank 1, and the gas storage tank 2 is connected with a pressure gauge 2 and a stop valve V5;
and the tested pressure stabilizing valve is arranged on one path connected with the gas storage tank 2 and is arranged between the gas storage tank 1 and the gas storage tank 2.
2. The structure of the device for testing the durability of the pressure stabilizing valve as claimed in claim 1, wherein the gas storage tank 1 and the gas storage tank 2 are connected with the pressure stabilizing valve to be tested through a steel pipe through a nut and a joint.
3. The device structure for testing the durability of the pressure maintaining valve as claimed in claim 1, wherein in the test state, the stop valve V3 is in a fully open state, the stop valve V5 is in a fully closed state, and the stop valve V4 is in an open state.
4. The structure of the device for testing the durability of the pressure maintaining valve as claimed in claim 1, wherein the PLC component is connected with a solenoid valve V1 and a solenoid valve V2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121679066.XU CN215115151U (en) | 2021-07-22 | 2021-07-22 | Device structure for testing durability of pressure stabilizing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121679066.XU CN215115151U (en) | 2021-07-22 | 2021-07-22 | Device structure for testing durability of pressure stabilizing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215115151U true CN215115151U (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121679066.XU Active CN215115151U (en) | 2021-07-22 | 2021-07-22 | Device structure for testing durability of pressure stabilizing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215115151U (en) |
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2021
- 2021-07-22 CN CN202121679066.XU patent/CN215115151U/en active Active
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