CN107845435A - Sealed cylinder - Google Patents

Abstract

The disclosure discloses a sealed cylinder, which includes a cylinder main body, a cover part, a sealing device, a temperature measuring device and a pressure measuring device, an air inlet and an air outlet are arranged on the side wall of the cylinder main body, and the cover part closes the cylinder main body The opening of the first end and the second end, the sealing device is arranged between the cartridge body and the cover part, the temperature measuring device and the pressure measuring device pass through the cover part and the sealing device to the interior of the cartridge body; the disclosure can be well The simulated high temperature and high pressure environment, real-time and specific monitoring of the temperature and pressure of the test object, and a sealed cylinder with high pressure resistance and good sealing performance.

Description

Sealing cylinder

technical field

The disclosure relates to a sealing cylinder, in particular to a high temperature and high pressure resistant sealing cylinder.

Background technique

The core of the reactor is composed of the arrangement and combination of fuel elements, including cladding and surrounding radioactive fuel pellets. Therefore, the performance of the fuel cladding plays a vital role in the safety of the reactor. Before the fuel cladding is put into use, it is necessary to test the high temperature and high pressure resistance of the cladding under abnormal conditions (loss of water accident conditions) to ensure the safety of the reactor in the event of an accident. The detection of the cladding needs to be carried out in a special high temperature and high pressure resistant sealed cylinder. But at present, there is no sealed cylinder in the prior art that can well meet the safety performance test requirements of the fuel cladding of the current reactor under abnormal conditions.

Contents of the invention

(1) Purpose of the invention

The disclosure overcomes the deficiencies of the prior art, and provides a sealed cylinder that can well simulate a high temperature and high pressure environment, monitor the temperature and pressure of a test object in real time and specifically, and is resistant to high pressure and has good sealing performance.

(2) Technical solution

The present disclosure provides a sealed cylinder, comprising: a cylinder main body, a cover part, a sealing device, a temperature measuring device and a pressure measuring device, the cylinder main body includes an open first end and a second end, the side wall of the cylinder main body An air inlet and an air outlet are arranged on the top; the cover part closes the openings of the first end and the second end of the cylinder body; the sealing device is arranged between the cylinder body and the cover part; the temperature measuring device is used to measure the temperature inside the cylinder body; The pressure measuring device is used to measure the pressure inside the barrel body; the cover part and the sealing device are provided with holes for the pressure measuring device and the temperature measuring device to pass through, and the temperature measuring device and the pressure measuring device pass through the cover part and the sealing device The device reaches the interior of the cartridge body.

Further, the sealing cylinder further includes a drain pipe arranged on the side wall of the cylinder main body.

Further, the sealing device is a sealing gasket; both ends of the cylinder main body are provided with sealing gasket grooves with a diameter larger than the inner diameter of the cylinder main body, and the sealing gasket is placed on the sealing gasket groove.

Further, the cover part includes a plunger portion and a fixing portion protruding from the plunger portion, the plunger portion is inserted into the opening of the barrel body to cooperate with the sealing device, and the fixing portion faces the end surface of the barrel body.

Further, a fastening device is connected between the fixed part of the cover part and the main body of the cylinder, for pressing the cover part and the main body of the cylinder.

Further, the air inlet is close to one end of the cylinder main body, the air outlet is close to the other two ends of the cylinder main body, and the drain pipe is arranged near the lower port of the cylinder main body.

Further, the temperature measuring device is a thermocouple, and the pressure measuring device is a pressure measuring catheter.

Further, the thermocouples are arranged inside the main body of the cylinder in parallel with the axial direction of the test object to be tested, and one or more thermocouples are arranged around each test object to be tested.

Further, the sealing gasket is composed of stainless steel sheets and rubber sheets arranged alternately.

Further, the holes on the cover part and the sealing gasket are evenly distributed in a circular shape.

Further, the cylinder main body of the sealed cylinder is designed to withstand a pressure of 6MPa.

Further, the material used for the sealing cylinder is a high temperature resistant material.

Further, the cover part is designed as an upper flange structure, and the side wall corresponding to the barrel main body is designed as a lower flange structure.

Further, the fastening device is a compression nut.

(3) Beneficial effects

The sealing gasket of the present disclosure is composed of stainless steel sheets and rubber sheets alternately arranged, so that the sealing performance of the sealing cylinder is greatly improved, and the sealing performance of the sealing cylinder is well guaranteed; the material of the sealing cylinder is high temperature resistant material, and the cylinder body The design withstand pressure is 6MPa, so that this disclosure can test the test object at high temperature and high pressure under the condition of ensuring safety; the temperature of the test object in the sealed cylinder is measured by thermocouples, and multiple thermocouples are set near the test object and Laying straight can make the thermocouple measurement data more detailed, and can realize the real-time specific temperature measurement feedback; the evenly distributed round holes on the first sealing gasket can make the thermocouple evenly lead out, so that the thermocouples do not interfere with each other; The sealing gasket is composed of stainless steel sheets and rubber sheets arranged alternately, which can ensure the sealing of the hole through which the thermocouple and the pressure measurement conduit pass; the pressure measurement conduit measures the pressure of the test object, and each test object is connected with a pressure measurement conduit, which can realize Measure the pressure of the test object in real time; the gas that provides a high-temperature environment for the test object enters from the inlet and exits from the outlet. When the high-temperature gas enters, it will generate condensed water with the test object at room temperature and the inner shell of the cylinder, and the drain pipe can discharge the condensed water. Effectively prevent the impact of condensed water on the test environment of the experimental object, and can well simulate the environment of the loss of water accident (ie, high temperature and high pressure).

Description of drawings

Fig. 1 is a structural schematic diagram of a high temperature and high pressure resistant sealing cylinder according to an embodiment of the present invention

1. Barrel body 2. Cover part 3. Gasket 4. Air inlet 5. Air outlet

6. Drain pipe 7. Thermocouple 8. Pressure measuring conduit 9. Fastening device

Detailed ways

The present disclosure will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a high temperature and high pressure resistant sealing cylinder according to an embodiment of the present invention. As shown in Figure 1, the sealed cylinder includes a cylinder main body 1, an upper flange structure 2, an air inlet 4, an air outlet 5, a pressure measurement conduit 8, a thermocouple 7, a drain pipe 6 and a sealing gasket 3, and the cylinder 1 The two ends are set as the lower flange structure.

Both ends of the cylinder body 1 are provided with sealing gasket grooves with a diameter greater than the inner diameter of the cylinder body 1. The sealing gaskets 3 are placed on the sealing gasket grooves. The sealing gaskets 3 are composed of stainless steel sheets and rubber sheets arranged alternately. In the above embodiment, stainless steel sheets and rubber sheets are alternately arranged, so that the sealing performance of the sealing cylinder is greatly improved, and the sealing performance of the sealing cylinder is well guaranteed;

The upper flange 2 presses the sealing gasket 3 to match the structure of the lower flange, and the upper flange 2 is used in conjunction with the compression nut 9; the upper part of the cylinder 1 is provided with an air outlet 5, and the lower part of the cylinder 1 is provided with an air inlet 4, and the cylinder 1 1 The lower part is provided with a drainage pipe 6; in one embodiment, when the high-temperature gas is introduced, condensed water will be generated with the test object at room temperature and the inner shell of the cylinder main body 1, and the drain pipe can discharge the condensed water, effectively preventing the condensed water from affecting the test object. The impact of the test environment can well simulate the loss of water accident conditions (ie high temperature and high pressure) environment.

The thermocouple 7 and the pressure measurement conduit 8 pass through the first sealing gasket 3 and the first upper flange 2; the thermocouple 7 is laid axially and flatly near the test object, and four thermocouples 7 are arranged around each test object. In one embodiment, setting a plurality of thermocouples 7 near the test object and laying them axially flat can make the measurement data of the thermocouples 7 more detailed, and can realize real-time specific temperature measurement feedback;

In the above embodiment, the evenly distributed circular holes on the first sealing gasket 3 can lead out the thermocouples 7 evenly, so that the thermocouples 7 do not interfere with each other; the sealing gasket 3 is alternately arranged by stainless steel sheets and rubber sheets The structure can ensure the tightness of the hole that the thermocouple 7 and the pressure measurement conduit 8 pass through; the pressure measurement conduit 8 measures the pressure of the test object, and each test object is connected with a pressure measurement conduit 8, which can realize real-time specific measurement of the pressure of the test object;

The material used for the sealing cylinder body is a high temperature resistant material, and the cylinder main body 1 is designed to withstand a pressure of 6MPa. In one embodiment, the technical features of the sealed cylinder enable the present disclosure to perform high-temperature and high-pressure tests on test objects while ensuring safety.

The following is a brief description of the process of using the above-mentioned sealed cylinder to test the test object:

Put the test object into the sealed cylinder first, lay the thermocouple 7 evenly near the test object, there are at least 3 thermocouples around each test object, and the other end of the thermocouple 7 passes through the first sealing gasket 3 and the first upper The flange 2 is connected with the temperature measurement module, and each experimental object is connected with the pressure measurement conduit 8, and the pressure measurement conduit 8 passes through the first sealing gasket 3 and the first upper flange 2 and is connected with the pressure measurement module; the sealing gasket 3 is composed of Stainless steel sheets and rubber sheets are alternately arranged to ensure the tightness of the hole through which the thermocouple 7 and the pressure measuring conduit 8 pass. Place the sealing gasket 3 on the gasket groove, press the upper flange 2 tightly, and screw it tightly Tighten the nut 9 so that the upper flange 2 and the sealing gasket 3 fit closely to ensure the tightness of the sealing cylinder. After the measurement module is connected and the two ends of the sealing cylinder are sealed, the high-temperature gas is introduced from the air inlet. When the temperature of the air outlet is similar to that of the air inlet, the test can be started.

The above descriptions are only exemplary embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure within.

Claims (10)

1. A sealed cylinder, comprising: A cylinder body (1), the cylinder body (1) comprising an open first end and a second end, the side wall of the cylinder body (1) is provided with an air inlet (4) and an air outlet (5); a cover part (2), which closes the openings at the first end and the second end of the cartridge body (1); The sealing device is arranged between the cylinder main body (1) and the cover part (2); A temperature measuring device for measuring the temperature inside the cylinder main body (1); A pressure measuring device for measuring the pressure inside the barrel body (1); The cover part (2) and the sealing device are provided with holes for the passage of the pressure measuring device and the temperature measuring device; the temperature measuring device and the pressure measuring device pass through the cover part (2) and the sealing device to reach The interior of the barrel body (1). 2. The sealing cylinder according to claim 1, characterized in that the sealing cylinder further comprises a drain pipe (6) arranged on the side wall of the cylinder main body (1). 3. The sealing cylinder according to claim 2, characterized in that, the sealing device is a sealing gasket (3); the two ends of the cylinder main body (1) are provided with a diameter larger than the inner diameter of the cylinder main body (1). Gasket groove, the gasket (3) is placed on the gasket groove. 4. The sealing cylinder according to claim 3, characterized in that, the cover part (2) comprises a plunger part and a fixing part protruding from the plunger part, and the plunger part is inserted into the cylinder main body (1) In the opening of the cylinder, it cooperates with the sealing device, and the fixed part faces the end surface of the cylinder main body (1). 5. The sealing cylinder according to claim 4, characterized in that, a fastening device (9) is connected between the fixed part of the cover part (2) and the cylinder main body (1) for pressing the cover part (2) and barrel body (1). 6. The sealing cylinder according to claim 2, characterized in that, the air inlet (4) is close to one end of the cylinder body (1), and the air outlet (5) is close to the other end of the cylinder body (1). end, and the drain pipe (6) is arranged near the lower port of the barrel main body (1). 7. The sealed cylinder according to claim 1, characterized in that, the temperature measuring device is a thermocouple (7), and the pressure measuring device is a pressure measuring catheter (8). 8. The sealed cylinder according to claim 7, characterized in that, the thermocouple (7) is arranged inside the cylinder main body (1) in parallel with the axial direction of the test object to be tested, and is arranged around each test object to be measured One or more thermocouples (7). 9. The sealing cylinder according to claim 3, characterized in that, the sealing gasket (3) is composed of stainless steel sheets and rubber sheets arranged alternately. 10. The sealing cylinder according to claim 3, characterized in that the holes on the cover part (2) and the sealing gasket (3) are evenly distributed in a circular shape.