CN215448783U - Deformation test device for pressure sensitive element - Google Patents
Deformation test device for pressure sensitive element Download PDFInfo
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- CN215448783U CN215448783U CN202121558085.7U CN202121558085U CN215448783U CN 215448783 U CN215448783 U CN 215448783U CN 202121558085 U CN202121558085 U CN 202121558085U CN 215448783 U CN215448783 U CN 215448783U
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Abstract
The utility model relates to the field of nuclear equipment, in particular to a deformation test device for a pressure sensitive element. The pressure sensitive element deformation test device comprises: the two ends of the tank body are respectively connected with the top cover and the bottom cover to form a closed structure; the explosion-proof displacement sensor is arranged on the inner surface of the top cover, and a data wire of the explosion-proof displacement sensor is led out through an opening on the top cover; an explosion-proof pressure sensor, an air inlet, a shock-proof pressure gauge and a safety valve are arranged on the outer surface of the top cover; a valve is arranged at the air inlet; the workpiece to be detected is positioned in the tank body and is fixed on the bottom cover. The utility model can simulate the working condition of the corrugated pipe in the actual service process, complete the measurement of the accurate deformation of the corrugated pipe under different pressure conditions, and can calibrate the pressure deformation of the pressure sensitive element before use.
Description
Technical Field
The utility model relates to the field of nuclear equipment, in particular to a deformation test device for a pressure sensitive element.
Background
In the design process of the pressure sensitive element, for example: the design of bellows, because the bellows product of in-service use uses under sealed condition, need carry out the analysis to the pressure deformation characteristic of bellows before using, reachs pressure deformation calibration curve, consequently need carry out the deformation test to the bellows to guarantee that the deformation volume of bellows is in the state that can real-time supervision in the use, thereby can effectively know the deformation volume and the user state of bellows.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the pressure sensitive element deformation test device simulates the working condition of a corrugated pipe in the actual service process, completes the measurement of the accurate deformation of the pressure sensitive element under different pressure conditions, and can calibrate the pressure deformation of the pressure sensitive element before use.
The utility model provides a deformation test device for a pressure sensitive element, which comprises: the device comprises a top cover, a tank body, a bottom cover, a workpiece to be detected, an explosion-proof displacement sensor, an explosion-proof pressure sensor, an air inlet, a shock-proof pressure gauge, a valve and a safety valve;
the two ends of the tank body are respectively connected with the top cover and the bottom cover to form a closed structure;
the explosion-proof displacement sensor is arranged on the inner surface of the top cover, and a data wire of the explosion-proof displacement sensor is led out through an opening on the top cover;
an explosion-proof pressure sensor, an air inlet, a shock-proof pressure gauge and a safety valve are arranged on the outer surface of the top cover; a valve is arranged at the air inlet;
the workpiece to be detected is positioned in the tank body and is fixed on the bottom cover.
Preferably, the bottom cover and the tank body are welded or connected into a whole.
Preferably, the data line of the explosion-proof type displacement sensor is connected with a computer or a PLC.
Preferably, the data line of the explosion-proof type position pressure sensor is connected with a computer or a PLC.
Preferably, the shock-proof pressure gauge is connected with the top cover in a sealing mode.
Preferably, the workpiece to be detected is fixed on the bottom cover through electric welding or bolts;
the workpiece to be detected is a corrugated pipe.
Preferably, the explosion-proof type position pressure sensor is fixed through a hole on the top cover in a threaded mode.
Preferably, the height position at which the explosion-proof type displacement sensor is fixed has a movement amount.
Preferably, the safety valve is hermetically connected after the opening is formed in the top cover.
Preferably, the top cover, the tank body and the bottom cover are connected through a plurality of bolts, and sealing rings are used for guaranteeing sealing after assembly.
Compared with the prior art, the pressure sensitive element deformation test device can accurately test the accurate change of the length of the corrugated pipe under different gas pressure conditions aiming at the corrugated pipe bearing the gas pressure, simulate the working condition of the corrugated pipe in the actual service process and finish the accurate deformation of the corrugated pipe under different pressure conditions.
Drawings
FIG. 1 is a schematic structural diagram of a pressure sensitive element deformation testing device;
FIG. 2 is a plan view of a pressure sensitive element deformation testing apparatus;
in the figure:
1-a top cover; 2-explosion proof displacement sensor; 3-tank body; 4-workpiece to be detected; 5-bottom cover; 6-an air inlet; 7-a valve; 8-opening the hole; 9-shock-proof pressure gauge; 10-safety valve; 11-explosion proof pressure sensor; 12-bolt.
Detailed Description
For a further understanding of the utility model, embodiments of the utility model are described below in conjunction with the examples, but it should be understood that these descriptions are included merely to further illustrate features and advantages of the utility model, and are not intended to limit the utility model.
The embodiment of the utility model discloses a deformation test device for a pressure sensitive element, which comprises the following components in percentage by weight as shown in figure 1: the device comprises a top cover 1, a tank body 3, a bottom cover 5, a workpiece 4 to be detected, an explosion-proof type displacement sensor 2, an explosion-proof type pressure sensor 11, an air inlet 6, a shock-proof pressure gauge 9, a valve 7 and a safety valve 10;
the two ends of the tank body 3 are respectively connected with the top cover 1 and the bottom cover 5 to form a closed structure;
the explosion-proof displacement sensor 2 is arranged on the inner surface of the top cover 1, and a data wire of the explosion-proof displacement sensor is led out through an opening 8 in the top cover;
the outer surface of the top cover 1 is provided with an explosion-proof pressure sensor 11, an air inlet 6, a shock-proof pressure gauge 9 and a safety valve 10; a valve 7 is arranged at the air inlet 6;
the workpiece 4 to be detected is positioned in the tank body 3 and fixed on the bottom cover 5.
The deformation test device for the pressure sensitive element detects workpieces to be tested under different pressure conditions, and is particularly suitable for measuring the accurate deformation of the corrugated pipe. The pressure sensitive element deformation test device ensures sealing.
According to the utility model, two ends of the tank body 3 are respectively connected with the top cover 1 and the bottom cover 5 to form a closed structure;
preferably, the top cover 1, the tank body 3 and the bottom cover 5 are connected by a plurality of bolts 12, and the assembled sealing is ensured by sealing rings.
In order to reduce the sealing surface, the bottom cover 5 and the can body 3 are welded or connected into a whole.
The explosion-proof displacement sensor 2 is arranged on the inner surface of the top cover 1, and a data wire of the explosion-proof displacement sensor is led out through an opening 8 in the top cover; preferably, the data line of the explosion-proof displacement sensor is led out through the perforated silica gel plug on the top cover to ensure sealing.
The data line of the explosion-proof displacement sensor 2 transmitted from the top cover is connected with a computer or a PLC.
In order to use corrugated pipes with different heights and ensure that the measuring range of the sensor is matched with the compression range of a workpiece to be detected, the height position fixed by the explosion-proof displacement sensor 2 has a movement amount.
As shown in fig. 2, an explosion-proof pressure sensor 11, an air inlet 6, a shock-proof pressure gauge 9 and a safety valve 10 are arranged on the outer surface of the top cover 1; a valve 7 is arranged at the air inlet 6;
explosion-proof type pressure sensor 11 is fixed in on top cap 1, and is fixed through the trompil screw thread on top cap 1, explosion-proof type pressure sensor 11 is located whole testing arrangement outsidely. And a data line of the explosion-proof type position pressure sensor 11 is connected with a computer or a PLC.
The air inlet 6 is connected with the top cover 1 in a sealing way through a valve 7 after being opened with a hole, and is used for inflation and deflation.
The shock-proof pressure gauge 9 is connected with the top cover 1 in a sealing way after the top cover 1 is provided with a hole, and is used for monitoring the pressure in the tank body in real time and assisting the explosion-proof pressure sensor 11 to measure the pressure in the device.
The safety valve 10 is hermetically connected after the hole is formed in the top cover 1, and is used for pressure relief in emergency, so that the safety of the whole device is guaranteed.
The workpiece 4 to be detected is positioned in the tank body 3 and fixed on the bottom cover 5.
The workpiece 4 to be detected is preferably a corrugated pipe, and the corrugated pipe is fixed on the bottom cover through electric welding or bolts.
In order to ensure safety, the tank body is made of thick-wall seamless stainless steel pipes, the upper bottom cover and the lower bottom cover are also made of thick-wall stainless steel, and the strength needs to be calculated and checked according to the pressure in the tank body during design.
A 'safety valve' is arranged, and the pressure relief threshold value of the safety valve is set by referring to the predicted working pressure in the tank body.
After the test begins to inflate, the whole tank body is arranged in a safety tank or a pit, the shock-proof pressure gauge can also be led out through a pipeline, and related personnel are far away from the device.
The pressure sensitive element testing device provided by the utility model comprises the following implementation steps:
(1) the corrugated pipe is not assembled, all pressure gauges, pressure sensors, air inlet valves and the like are assembled on the top cover, the whole device is connected and sealed, air inflation and pressure maintaining are carried out, and the tightness is tested;
(2) a corrugated pipe is replaced by a steel block with the same volume, the whole set of device is assembled, the displacement sensor is guaranteed to be in contact with the steel block, after the device is sealed, the device is inflated to the pressure to be tested, and the deformation of the whole set of device under the pressure is measured through the displacement sensor. If the deformation is small, the deformation is ignored, and if the deformation is large, the deformation needs to be deducted when the corrugated pipe is tested to deform in the later period.
(3) Fixing the corrugated pipe to be tested and the bottom cover, and connecting and sealing the bottom cover and the tank body;
(4) the connection and the fixation of the displacement sensor and the top cover are completed, but the precompression quantity of the telescopic rod of the displacement sensor is adjusted and tested by trying to close the top cover, so that the measurement of the deformation quantity of the corrugated pipe can be ensured;
(5) completing the connection and sealing of the whole device, and testing the sealing performance by low-pressure inflation;
(6) filling gas (such as nitrogen) at a very slow speed through the air inlet, maintaining pressure at different pressures, measuring the pressure in the tank body in real time through the pressure sensor, measuring the compression amount of the corrugated pipe in real time through the displacement sensor, and summarizing the data of the pressure and the displacement to obtain the relation between the compression amount and the displacement of the corrugated pipe.
(7) After the test is finished, the tank is opened after the pressure relief is finished through the air inlet.
(8) The pressure sensor or the displacement sensor is provided with a corresponding data acquisition module. The pressure data of the pressure sensor and the displacement data of the 2 displacement sensors can be acquired by adopting a data interface of a PLC or a computer. The actual displacement data of the corrugated pipe is based on the average value of the displacement data of 2 displacement sensors.
The above description of the embodiments is only intended to facilitate the understanding of the method of the utility model and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A pressure sensitive element deformation test device is characterized by comprising: the device comprises a top cover, a tank body, a bottom cover, a workpiece to be detected, an explosion-proof displacement sensor, an explosion-proof pressure sensor, an air inlet, a shock-proof pressure gauge, a valve and a safety valve;
the two ends of the tank body are respectively connected with the top cover and the bottom cover to form a closed structure;
the explosion-proof displacement sensor is arranged on the inner surface of the top cover, and a data wire of the explosion-proof displacement sensor is led out through an opening on the top cover;
an explosion-proof pressure sensor, an air inlet, a shock-proof pressure gauge and a safety valve are arranged on the outer surface of the top cover; a valve is arranged at the air inlet;
the workpiece to be detected is positioned in the tank body and is fixed on the bottom cover.
2. A pressure sensitive element deformation testing device as claimed in claim 1, wherein the bottom cover and the tank are welded or integrated.
3. The pressure sensitive element deformation testing device according to claim 1, wherein the data line of the explosion-proof type displacement sensor is connected with a computer or a PLC.
4. The pressure sensitive element deformation testing device according to claim 1, wherein the data line of the explosion-proof type position pressure sensor is connected with a computer or a PLC.
5. The pressure sensitive element deformation testing device of claim 1, wherein the shock-proof pressure gauge is connected with the top cover in a sealing manner.
6. The pressure sensitive element deformation testing device according to claim 1, wherein the workpiece to be tested is fixed on the bottom cover by electric welding or bolts;
the workpiece to be detected is a corrugated pipe.
7. The pressure sensitive element deformation testing device of claim 1, wherein the explosion-proof type position pressure sensor is screwed through an opening on the top cover.
8. The pressure sensitive element deformation testing apparatus according to claim 1, wherein the fixed height position of the explosion-proof type displacement sensor has a movement amount.
9. The apparatus for testing deformation of a pressure sensitive element according to claim 1, wherein the safety valve is hermetically connected after the opening of the top cover.
10. The apparatus of claim 1, wherein the top cover, the tank body and the bottom cover are connected by a plurality of bolts, and sealing rings are used to ensure the sealing after assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121558085.7U CN215448783U (en) | 2021-07-09 | 2021-07-09 | Deformation test device for pressure sensitive element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121558085.7U CN215448783U (en) | 2021-07-09 | 2021-07-09 | Deformation test device for pressure sensitive element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215448783U true CN215448783U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121558085.7U Active CN215448783U (en) | 2021-07-09 | 2021-07-09 | Deformation test device for pressure sensitive element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215448783U (en) |
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2021
- 2021-07-09 CN CN202121558085.7U patent/CN215448783U/en active Active
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