Non-metal part pressure performance testing device

Abstract

The invention discloses a non-metal piece pressure performance testing device, which relates to the technical field of detection equipment and comprises a high-pressure pressurization part, a high-pressure decompression part, a high-pressure relief part, an automatic control part and an auxiliary gas source part, wherein the high-pressure relief part comprises a connecting shell; the first fixing piece is fixedly connected in the connecting shell, and a plurality of through holes are formed in the first fixing piece; the first fixing shell is fixedly connected to the first fixing piece, the first fixing piece and the first fixing shell are jointly connected with a first sliding piece in a sliding mode, and the side, away from the first fixing shell, of the first sliding piece is fixedly connected with a connecting frame. According to the invention, the pressure applied in the reaction kettle is utilized to generate extrusion force on the sealing ring, that is, the larger the pressure in the reaction kettle is, the larger the extrusion force applied on the sealing ring is, so that the sealing failure of the sealing ring caused by the influence of a high-pressure environment can be effectively avoided, and the safety of equipment under a high-pressure condition is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a pressure performance testing device for non-metallic parts. Background Art

[0002] Non-metallic parts pressure test is a test to evaluate the performance and durability of non-metallic materials under different pressure conditions. It is mainly used to ensure the safety and reliability of materials in practical applications. Common pressure test types include hydrostatic pressure test, air pressure test, cyclic pressure test, etc. The air pressure test usually consists of a reactor, pressurizing equipment, pressure relief equipment and monitoring equipment. Its working principle is as follows: 1. Place the sample in the reactor; 2. The pressurizing equipment gradually pressurizes the reactor to increase the pressure inside the reactor; 3. During the pressurization process, the monitoring equipment monitors the pressure resistance of the sample in real time; 4. If the pressure inside the reactor exceeds the predetermined safety value, the pressure relief device will automatically open and release excess gas to prevent the equipment or sample from being damaged due to overpressure; 5. If the pressure inside the reactor does not exceed the predetermined safety value, continue to increase the pressure inside the reactor; 6. When the pressure inside the reactor reaches the pressure required by the sample, the pressure relief device actively discharges the gas in the reactor; 7. During the gas discharge process, the monitoring equipment continues to monitor the changes of the sample under the reduced pressure environment; 8. When the pressure inside the reactor stabilizes, turn off all related equipment; 9. Finally, take the sample out of the reactor.

[0003] During use, the pressure in the reactor will continue to increase, so the sealing ring in the pressure relief device will become abnormal, resulting in a decrease in the sealing performance between it and the contact surface. For example, the rubber sealing ring is prone to hardening, becoming brittle and losing elasticity under high pressure, which affects its sealing effect and may eventually cause gas leakage in the reactor. Summary of the invention

[0004] In view of the problems raised in the above background, the present invention provides a pressure performance testing device for non-metallic parts.

[0005] The technical solution is as follows: A non-metallic parts pressure performance testing device, comprising a high-pressure boosting part, a high-pressure reducing part, a high-pressure pressure relief part, an automatic control part and an auxiliary gas source part; The high-pressure boosting unit includes a boosting valve connected to the cylinder through a pipeline, the outlet end of the boosting valve is connected to the high-pressure container through a pipeline, and the pipelines on both sides of the boosting valve are respectively provided with a first pressure sensor and a second pressure sensor; The high-pressure pressure reducing unit includes a gas-controlled pressure reducing valve disposed between the pressure boosting valve and the reaction kettle; The auxiliary gas source part includes a low-pressure pipeline connected to the inlet of the booster valve, and a third pressure sensor and a solenoid valve are arranged on the low-pressure pipeline; The automatic control unit is a programmable controller, and the programmable controller is electrically connected to the first pressure sensor, the second pressure sensor, the third pressure sensor and the solenoid valve respectively; The high-pressure relief part is a pressure relief device arranged at the outlet of the reactor, and the pressure relief device includes a connecting shell; A first fixing member is fixedly connected to the connecting shell, and a plurality of through holes are provided in the first fixing member; A first fixed shell is fixedly connected to the first fixed member, the first fixed member and the first fixed shell are slidably connected to a first sliding member, a connecting frame is fixedly connected to a side of the first sliding member away from the first fixed shell, and the connecting frame is fixedly connected to extrusion columns with the same number of through holes on the first fixed member; A fixing frame fixedly connected in the connecting shell, wherein the fixing frame is fixedly connected with a second fixing shell which is slidably matched with the first sliding member; A connecting pipe, fixedly connected to and communicated with the connecting shell, the connecting pipe is fixedly connected to and communicated with the second fixing shell, the first fixing member is located between two sides of the connecting pipe, and the connecting shell is fixedly connected to a third fixing shell for protecting the connecting pipe; A limiting component, disposed on the third fixed shell, and used for limiting the movement of the first sliding member; A blocking component is arranged in the connecting shell and is used to change the blocking mode of all the through holes on the first fixing member.

[0006] In addition, it is particularly preferred that the limiting component includes: a fourth fixed shell, fixedly connected to and communicated with the connecting pipe, the fourth fixed shell being fixedly connected to the third fixed shell, the first fixing member being fixedly connected with a spring telescopic rod for driving the first sliding member to return to its original position; A second sliding member is slidably connected to the fourth fixed shell, a spring fixedly connected to the second sliding member is arranged in the fourth fixed shell, and a first limiting frame is slidably connected to the connecting shell, the first fixed shell and the third fixed shell together, the first limiting frame is used to limit the first sliding member, and the second sliding member is fixedly connected to the first limiting frame.

[0007] In addition, it is particularly preferred that the limiting component further comprises: A sliding plate, slidably connected to the fourth fixed shell, the sliding plate being fixedly connected to the spring on the second sliding member; A rotating member, threadedly connected to the fourth fixed shell, one side of the rotating member located in the fourth fixed shell is limitedly rotated with the sliding plate, and the second sliding member passes through the rotating member and is slidably matched with the rotating member; A blocking member is fixedly connected to the second sliding member, the blocking member passes through the connecting shell and the third fixed shell and slidably cooperates with the two, the blocking member is used to block the connecting pipe, an L-shaped cavity is provided in the blocking member, and the L-shaped cavity in the blocking member is used to connect the connecting pipe and the connecting shell.

[0008] In addition, it is particularly preferred that the blocking component comprises: The air guides have the same number as the through holes on the first fixing member and are respectively fixed to adjacent through holes on the first fixing member; The number of sealing members is consistent with that of the extrusion columns, and they are respectively fixed to adjacent extrusion columns. The air guide member is provided with a limiting groove on the side facing the adjacent sealing member, and the limiting groove is communicated with the inside of the connecting shell. The sealing member is in contact with and cooperates with the adjacent limiting groove. The air guide member is provided with a ventilation groove on the side facing away from the adjacent sealing member, and the ventilation groove is communicated with the inside of the connecting shell. The air guide member is provided with spaced inclined holes, and the inclined holes are used to connect adjacent ventilation grooves with adjacent limiting grooves. The sealing member is sealed and cooperated with the adjacent inclined holes.

[0009] In addition, it is particularly preferred that the cross section of the ventilation groove is a right-angled trapezoid, and the upper base of the right-angled trapezoid on the cross section of the ventilation groove is close to the adjacent sealing member.

[0010] In addition, it is particularly preferred that the limiting groove is a truncated cone-shaped groove, and the side of the extrusion column close to the adjacent ventilation groove is truncated cone-shaped.

[0011] In addition, it is particularly preferred that the seal is made of a soft deformable material, and the cross-section of the seal is a trapezoid, the side with a larger diameter on the seal is larger than the side with a larger diameter on the adjacent limiting groove, the side with a smaller diameter on the seal is larger than the side with a smaller diameter on the adjacent limiting groove, and the depth of the limiting groove is greater than the length of the adjacent seal.

[0012] In addition, it is particularly preferred that the edge line of the cross section of the sealing member is not parallel to the edge line of the cross section of the adjacent air guide member on which the limiting groove is located.

[0013] In addition, it is particularly preferred that it further comprises: The second limiting frame is slidably connected to the first fixing member and is used to limit the moving distance of the first sliding member. The second limiting frame is limitedly matched with the first fixing shell.

[0014] In addition, it is particularly preferred that it further comprises: An adjusting component is disposed in the connecting shell and is used to adjust the position of the second limiting frame. The adjusting component includes: A second fixing member, fixedly connected to the fixing frame; The rotating member is rotatably connected to the second fixed member, a thread groove is arranged in the rotating member, the second limiting frame is fixedly connected with a fixing pin which is slidably matched with the thread groove in the rotating member, and a transmission member is arranged between the second fixed member and the rotating member.

[0015] Further preferably, the pressure relief device may also be electrically connected to a programmable controller to achieve automatic control of opening and closing operations.

[0016] The beneficial effects of the present invention are: The present invention utilizes a programmable controller to control each unit, so as to automatically control the boost pressure, boost speed, relief pressure, relief speed, etc. of the high-pressure gas in the main circuit, so as to achieve the purpose of safely and effectively controlling the high-pressure gas pressure.

[0017] At the same time, in order to solve the problem that the sealing ring in the existing pressure relief equipment fails due to abnormality under high-pressure environment, the present invention proposes a method of enhancing the sealing performance of the sealing ring by increasing the sealing strength of the sealing ring through pressure. Specifically, the pressure applied inside the reactor is used to generate an extrusion force on the sealing ring. That is to say, the greater the pressure in the reactor, the greater the extrusion force applied to the sealing ring. This can effectively avoid the sealing failure of the sealing ring caused by the influence of the high-pressure environment, thereby ensuring the safety of the equipment under high-pressure conditions. When testing the compressive performance of the sample, the threshold inside the connecting shell can be changed by adjusting the pressure of the sliding plate on the adjacent spring, so as to achieve the purpose of flexibly adjusting the threshold. The advantage of this is that the discharge of excess gas in the reactor can be controlled according to the test requirements of different samples, thereby improving the safety and flexibility of the test; When testing the compressive performance of the sample, the position of the first sliding member can be adjusted so that the gas in the reactor is discharged normally and the amount of gas discharged at the same time can be adjusted, thereby achieving the purpose of flexibly adjusting the gas discharge speed and improving the diversity and flexibility of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural flow chart of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the pressure relief device of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the third fixed shell in the pressure relief device of the present invention; Figure 4 It is a three-dimensional structural cross-sectional view of a connecting shell in the pressure relief device of the present invention; Figure 5 It is a three-dimensional structural cross-sectional view of the connecting pipe invented in the pressure relief device; Figure 6 It is a three-dimensional structural cross-sectional view of the first fixed shell in the pressure relief device of the present invention; Figure 7 It is a three-dimensional structural cross-sectional view of the fourth fixed shell in the pressure relief device of the present invention; Figure 8 It is a schematic diagram of another perspective of the three-dimensional structure of the fixing frame in the pressure relief device of the present invention; Fig. 9 It is a three-dimensional structural cross-sectional view of the second fixed member and the rotating member in the pressure relief device of the present invention.

[0019] Marked in the figure: 1-steel cylinder, 2-boosting valve, 3-high-pressure container, 4-first pressure sensor, 5-second pressure sensor, 6-reactor, 7-gas-controlled pressure reducing valve, 8-third pressure sensor, 9-solenoid valve, 10-pressure relief device, 11-connecting shell, 12-first fixed part, 13-first fixed shell, 14-first sliding part, 15-connecting frame, 151-extrusion column, 16-fixed frame, 17-second fixed shell, 18-connecting pipe, 19-third fixed shell, 21-fourth fixed shell, 22-second sliding part, 23-first limiting frame, 24-sliding plate, 25-rotating part, 31-air guide part, 32-sealing part, 33-limiting groove, 34-venting groove, 35-inclined hole, 41-second limiting frame, 42-second fixed part, 43-rotating part, 44-transmission part. DETAILED DESCRIPTION

[0020] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as downward, upward, etc. are used to describe the drawings and do not represent limitations of the present invention. Any numerical designations such as first or second are merely illustrative and are not intended to limit the scope of the present invention in any way.

[0021] like Figure 1 As shown, a non-metallic component pressure performance testing device comprises a high-pressure boosting part, a high-pressure reducing part, a high-pressure pressure relief part, an automatic control part and an auxiliary gas source part; Among them, the high-pressure boosting part includes a boosting valve 2 connected to the cylinder 1 through a pipeline, the outlet end of the boosting valve 2 is connected to the high-pressure container 3 through a pipeline, and the pipelines on both sides of the boosting valve 2 are respectively provided with a first pressure sensor 4 and a second pressure sensor 5; the high-pressure reducing part includes an air-controlled reducing valve 7 arranged between the boosting valve 2 and the reactor 6; the auxiliary gas source part includes a low-pressure pipeline connected to the inlet of the boosting valve 2, and a third pressure sensor 8 and a solenoid valve 9 are arranged on the low-pressure pipeline; the automatic control part is a programmable controller, and the programmable controller is electrically connected to the first pressure sensor 4, the second pressure sensor 5, the third pressure sensor 8 and the solenoid valve 9 respectively; the high-pressure relief part is a pressure relief device 10 arranged at the outlet of the reactor 6.

[0022] like Figure 1 As shown, the gas in the cylinder 1 first enters the high-pressure container 3 after being pressurized by the booster valve 2. The pressure in the high-pressure container 3 can be as high as 70Mpa. The pressure in the high-pressure container 3 is reduced by the air-controlled pressure reducing valve 7 and then input into the reactor 6. The pressurization working process is: the booster valve 2 increases the pressure in the high-pressure container to 70Mpa, and then the booster valve 2 stops working. When the pressure in the high-pressure container 3 drops to 55Mpa, the booster valve 2 is opened again until the pressure in the high-pressure container 3 rises to 70Mpa and then stops again. The pressure in the high-pressure container 3 is reduced by the air-controlled pressure reducing valve 7 and then input into the reactor 6. Since the input end of the air-controlled pressure reducing valve 7 is 55-70Mpa, the pressure at the output end, that is, the pressure in the reactor 6 is guaranteed to be constant at 50Mpa. Such a design not only ensures the constant pressure in the reactor 6 (the airflow output by the booster valve 2 is pulsating, resulting in pulsating pressure) but also avoids the frequent start-up of the booster valve 2. High-pressure vessel 3 is a high-pressure autoclave with a corrosion-resistant design, with corrosion-resistant alloys welded inside to ensure that the autoclave body is not corroded by gases such as hydrogen sulfide, and all pipelines are made of 316L stainless steel.

[0023] The pressure relief process is completed by the hydraulic device 10 connected to the reactor 6. The programmable controller can monitor the parameters of the first pressure sensor 4, the second pressure sensor 5, and the third pressure sensor 8 in real time, and control the opening or closing of the solenoid valve 9 in real time. The boost valve 2 and the air-controlled pressure reducing valve 7 can be controlled according to the parameters.

[0024] In order to solve the problem that the sealing ring in the existing pressure relief equipment will become abnormal after being affected by high pressure, thereby causing sealing failure, the present invention proposes a method of applying active extrusion to the sealing ring to enhance the sealing performance of the sealing ring. Specifically, the sealing ring is squeezed by using the pressure applied inside the reactor 6, thereby effectively avoiding the sealing failure of the sealing ring caused by the influence of the high-pressure environment, thereby ensuring the safety of the equipment under high-pressure conditions.

[0025] like Figure 1-Figure 5As shown, the pressure relief device 10 includes a connecting shell 11; a first fixing member 12, which is fixedly connected to the connecting shell 11, and a plurality of through holes are arranged in the first fixing member 12; a first fixing shell 13, which is fixedly connected to the first fixing member 12, and the first fixing member 12 and the first fixing shell 13 are slidably connected to a first sliding member 14, and a connecting frame 15 is fixedly connected to the side of the first sliding member 14 away from the first fixing shell 13, and the connecting frame 15 is fixedly connected to an extrusion column 151 with the same number of through holes on the first fixing member 12; a fixing frame 16, which is fixedly connected to the connecting shell 11, The fixing frame 16 is fixedly connected to a second fixing shell 17 that slides with the first sliding member 14; the connecting tube 18 is fixedly connected and communicated with the connecting shell 11, the connecting tube 18 is fixedly connected and communicated with the second fixing shell 17, the first fixing member 12 is located between the two sides of the connecting tube 18, and the connecting shell 11 is fixedly connected to a third fixing shell 19 for protecting the connecting tube 18; a limiting component is arranged on the third fixing shell 19 to limit the movement of the first sliding member 14; a blocking component is arranged in the connecting shell 11 to change the blocking method of all through holes on the first fixing member 12.

[0026] In the above scheme, all the parts involved in the present invention can be adjusted according to actual conditions to determine whether to spray anti-corrosion coating or replace anti-corrosion materials. The connecting shell 11 is welded by two semicircular shells. The first fixing member 12 is located in the middle of the connecting shell 11. A number of through holes are circumferentially evenly spaced on the first fixing member 12. The number and distribution are only illustrated in the figure and are not limited. The number of through holes can be adjusted in time according to actual conditions in application. The right side of the first fixing shell 13 is a pointed end, which is used to reduce the resistance of the right side of the first fixing shell 13 to the gas. In actual applications, one spring telescopic rod on the right side of the first fixing member 12 can be used normally, but in the present invention, there are two spring telescopic rods to ensure the stability of the first sliding member 14 during movement. The two spring telescopic rods in the present invention are respectively located on the upper and lower sides of the first sliding member 14. Figure 4 The spring telescopic rod in the connecting shell 11 is in a compressed state at this time (when the connecting shell 11 is not in a pressure relief state, the spring telescopic rod will not be compressed), and the right side surface of the first sliding member 14 is not in contact with the inner side of the first fixed shell 13 at this time, so Figure 4 In order to connect the parts in the shell 11 when the pressure is released, the left side of the first sliding member 14 is sealed and slidably matched with the second fixed shell 17. When the gas in the connecting shell 11 enters the second fixed shell 17 through the connecting pipe 18, a thrust from left to right is applied to the first sliding member 14 to enhance the fit between the parts on the first sliding member 14 and the first fixed member 12 (before testing the sample, the right side of the connecting shell 11 is connected to the reactor). A limiting hole is set on the right side of the first sliding member 14.

[0027] like Figure 4 , Figure 5 and Figure 7As shown, the limiting assembly includes: a fourth fixed shell 21, which is fixedly connected and communicated with the connecting pipe 18, the fourth fixed shell 21 is fixedly connected to the third fixed shell 19, the first fixed member 12 is fixedly connected with a spring telescopic rod for driving the first sliding member 14 to reset; the second sliding member 22 is slidably connected to the fourth fixed shell 21, and a spring fixedly connected to the second sliding member 22 is arranged in the fourth fixed shell 21. The connecting shell 11, the first fixed shell 13 and the third fixed shell 19 are slidably connected with a first limiting frame 23, and the first limiting frame 23 is used to limit the first sliding member 14. The second sliding member 22 is fixedly connected to the first limiting frame 23. The limiting assembly also includes: a sliding The plate 24 is slidably connected in the fourth fixed shell 21, and the sliding plate 24 is fixedly connected to the spring on the second sliding member 22; the rotating member 25 is threadedly connected to the fourth fixed shell 21, and the rotating member 25 is located at one side of the fourth fixed shell 21 and cooperates with the sliding plate 24 to limit rotation, and the second sliding member 22 passes through the rotating member 25 and slidably cooperates with it; the blocking member 26 is fixedly connected to the second sliding member 22, and the blocking member 26 passes through the connecting shell 11 and the third fixed shell 19 and slidably cooperates with the two, and the blocking member 26 is used to block the connecting pipe 18, and an L-shaped cavity is provided in the blocking member 26, and the L-shaped cavity in the blocking member 26 is used to connect the connecting pipe 18 and the connecting shell 11.

[0028] In the above solution, an inclined surface is provided inside the fourth fixed shell 21, and the lower side of the second sliding member 22 is sealed and slidably connected to the fourth fixed shell 21. Figure 4 In the figure, the second sliding member 22 has been pressed upward by the pressure in the connecting shell 11. At this time, the connecting shell 11 is in a state of pressure relief. The base position of the second sliding member 22 contacts the upper side of the inclined surface in the fourth fixed shell 21. Figure 4 In the embodiment, the spring on the upper side of the second sliding member 22 is in a compressed state, and the first limiting frame 23 is in limiting cooperation with the limiting hole on the first sliding member 14 .

[0029] like Figure 5 and Figure 6As shown, the blocking assembly includes: an air guide 31, which has the same number as the through holes on the first fixing member 12 and is respectively fixed to the adjacent through holes on the first fixing member 12; a sealing member 32, which has the same number as the extrusion column 151 and is respectively fixed to the adjacent extrusion column 151, a limiting groove 33 is provided on the side of the air guide 31 facing the adjacent sealing member 32, the limiting groove 33 is communicated with the inside of the connecting shell 11, the sealing member 32 is in contact with and cooperates with the adjacent limiting groove 33, a ventilation groove 34 is provided on the side of the air guide 31 facing away from the adjacent sealing member 32, the ventilation groove 34 is communicated with the inside of the connecting shell 11, and the air guide 31 is provided with spaced inclined holes 35, the inclined holes 35 are used to connect the adjacent ventilation grooves 34 with the adjacent limiting grooves 33, The seal 32 is sealed with the adjacent inclined hole 35, the cross-section of the ventilation groove 34 is a right-angled trapezoid, the upper base of the right-angled trapezoid on the cross-section of the ventilation groove 34 is close to the adjacent seal 32, the limiting groove 33 is a truncated cone groove, the side of the extrusion column 151 close to the adjacent ventilation groove 34 is truncated cone-shaped, the seal 32 is a soft deformable material, and the cross-section of the seal 32 is a trapezoid, the side with a larger diameter on the seal 32 is larger than the side with a larger diameter on the adjacent limiting groove 33, the side with a smaller diameter on the seal 32 is larger than the side with a smaller diameter on the adjacent limiting groove 33, the depth of the limiting groove 33 is greater than the length of the adjacent seal 32, and the edge line of the cross-section of the seal 32 is not parallel to the edge line of the cross-section on the side where the limiting groove 33 of the adjacent air guide 31 is located.

[0030] In the above scheme, the sealing member 32 is made of silicone. By installing the sealing member 32 and the air guide member 31, the existing sealing method is replaced (the existing sealing method is a plane fitting seal or a plunger seal). When the connecting shell 11 is depressurized, the gas is ejected through one of the vent grooves 34 and the adjacent inclined hole 35, which reduces the impact force of the gas on the adjacent air guide member 31 when passing through the vent groove 34, thereby enhancing the structural strength of the air guide member 31. When the gas passes through the inclined hole 35, the inclined hole 35 smoothly transports the gas to the adjacent limiting groove 33, so that the gas is ejected smoothly. Figure 5 In the figure, the pressure in the connecting shell 11 is released. At this time, the seal 32 is not in contact with the adjacent limiting groove 33. When the seal 32 is reset, the right side of the seal 32 preferentially contacts the inner side of the adjacent limiting groove 33, and the right side of the seal 32 is uniformly and inwardly deformed, thereby pre-extruding the seal 32, so that the seal 32 remains uniform and stable during the subsequent deformation process. Figure 6 In the figure, the upper limit groove 33 of the air guide 31 and the edge of the cross section of the sealing member 32 are not parallel, and the width of the gap between the upper limit groove 33 of the air guide 31 and the edge of the cross section of the sealing member 32 gradually increases from right to left. When the pressure in the connecting shell 11 is released, the gas is ejected from the limit groove 33, and the gas is guided to the outside through the gap between the limit groove 33 and the sealing member 32. The force of the gas ejected from the gap is changed by the change of the gap, thereby reducing the degree of cavitation on the left side of the air guide 31 and the sealing member 32.

[0031] Before testing the pressure of non-metallic parts, the staff installed the connecting shell 11 to the pressure relief port of the reactor 6 (existing equipment, not shown in the figure), and connected the other side of the connecting shell 11 to the gas collection equipment (not shown in the figure), thereby completing the installation of the connecting shell 11.

[0032] After the installation of the connecting shell 11 is completed, the staff puts the sample into the reactor 6, and then seals the reactor 6. Finally, the booster valve 2 injects gas into the reactor 6 (the gas medium that can be used in the test is: single or mixed gas of carbon dioxide, methane, and hydrogen sulfide). After the gas enters the reactor 6, it immediately enters the connecting shell 11 to increase the pressure in the connecting shell 11. At this time, the connecting shell 11 transports the gas to the connecting pipe 18, and the gas in the connecting pipe 18 then enters the second fixed shell 17 to increase the pressure in the second fixed shell 17, thereby generating a continuous thrust from the left to the right side on the first sliding member 14. At this time, the pressure in the connecting pipe 18 is not enough to drive the second sliding member 22 to move upward (the pressure in the connecting pipe 18 is less than the extrusion force applied by the spring on the second sliding member 22). Then, the extrusion force applied to the first sliding member 14 by the spring telescopic rod on the first fixed member 12 and the thrust applied to the first sliding member 14 by the gas in the connecting pipe 18 further enhances the sealing between the sealing member 32 and the adjacent limiting groove 33, thereby ensuring the sealing under high pressure conditions.

[0033] During the process of the pressurizing device applying pressure to the reactor 6, the monitoring device monitors the pressure resistance of the sample. If the pressure threshold inside the reactor 6 exceeds the safety value, the pressure in the connecting tube 18 increases, causing the second sliding member 22 to move upward and squeeze the upper spring (at this time, the squeezing force provided by the upper spring of the second sliding member 22 is less than the pressure in the connecting tube 18).

[0034] During the upward movement of the second sliding member 22, the first limiting frame 23 and the blocking member 26 are driven to move upward, and while the limiting of the first sliding member 14 is released, the blocking member 26 gradually blocks the connecting pipe 18. At this time, the pressure in the connecting shell 11 is greater than the thrust applied to the first sliding member 14 by the spring telescopic rod on the first fixing member 12, and the blocking member 26 has blocked the middle part of the connecting pipe 18, so that the connecting pipe 18 can only be connected to the left side of the connecting shell 11 through the L-shaped cavity on the blocking member 26. The above is the action before the pressure in the connecting shell 11 is released.

[0035] After the action before pressure relief is completed in the connecting shell 11, the gas in the connecting shell 11 enters all the inclined holes 35 through all the vent grooves 34, so that the gas enters the adjacent limiting grooves 33. After the pressure in the limiting grooves 33 increases, the adjacent sealing member 32 moves to the left (because the sealing member 32 is deformed inward when contacting the adjacent limiting grooves 33, the sealing member 32 will gradually reset during the movement to the left). During the movement of the sealing member 32 to the left, the first sliding member 14 is driven by the extrusion column 151 to move to the left along the second fixed shell 17 and the first fixed shell 13 (during the movement of the first sliding member 14, the telescopic part of the adjacent spring telescopic rod is squeezed to make the spring telescopic rod accumulate force. During the movement of the first sliding member 14, the gas on the left side of the connecting pipe 18 is squeezed into the connecting shell 11 through the L-shaped cavity on the blocking member 26). The above parts move to Figure 5 and Figure 6 After the state in the middle, the pressure in the connection shell 11 is released.

[0036] During the pressure relief of the connecting shell 11, the gas in the connecting shell 11 is ejected through all the ventilation grooves 34 and all the inclined holes 35, and approaches the adjacent inclined hole 35 through the shorter side of the right-angled trapezoidal line on the cross section of the ventilation groove 34, thereby reducing the impact force of the gas in the ventilation groove 34, so that the gas directly enters the adjacent inclined hole 35 from the ventilation groove 34, and is smoothly transported to the adjacent limiting groove 33 through the inclined hole 35, so that the gas enters the right side of the connecting shell 11, thereby achieving the pressure relief of excess gas in the connecting shell 11.

[0037] When the gas is ejected from the limiting groove 33, the edge line of the sealing member 32 is not parallel to the edge line of the side where the limiting groove 33 is located on the adjacent air guide member 31, thereby changing the force of the gas ejected from the limiting groove 33, thereby reducing the degree of cavitation on the left side of the air guide member 31 and the sealing member 32.

[0038] When the pressure of the gas in the connecting shell 11 drops to a safe value, the spring in the fourth fixed shell 21 applies an extrusion force to the second sliding member 22, so that the second sliding member 22 drives the blocking member 26 to move downward, and then the spring telescopic rod on the first fixed member 12 drives the first sliding member 14 to reset to the right, and the first sliding member 14 drives all the extrusion columns 151 and all the sealing members 32 to reset to the right. During the movement of the extrusion columns 151 and the adjacent sealing members 32, the inner sides of the adjacent limiting grooves 33 continuously squeeze the adjacent sealing members 32, so that the right side of the sealing member 32 is deformed first, thereby enhancing the uniformity of the subsequent deformation of the sealing member 32.

[0039] When the right side of the sealing member 32 is fitted with the inner side of the adjacent limiting groove 33, the extrusion column 151 will squeeze the left side of the adjacent sealing member 32 during its movement, so that the sealing member 32 is squeezed and expanded outward, and gradually fits with the adjacent limiting groove 33. When the sealing member 32 is deformed to fit with the adjacent limiting groove 33 and blocks the adjacent inclined hole 35, the right side of the connecting shell 11 remains sealed. At this time, the first sliding member 14 has slid to its right side and fits with the inner side of the first fixed shell 13. The central axis of the limiting hole on the right side of the first sliding member 14 has coincided with the central axis of the right side of the first limiting frame 23. Under the action of the thrust applied by the adjacent spring of the second sliding member 22, the second sliding member 22 drives the first limiting frame 23 to move downward. When the lower end of the first limiting frame 23 moves to the limiting hole on the right side of the first sliding member 14, the first sliding member 14 and its accessory parts are limited.

[0040] After the first limiting frame 23 is inserted into the limiting hole of the first sliding member 14, the second sliding member 22 is reset to a state where the adjacent spring is not compressed, and the blocking member 26 slides to no longer block the middle of the connecting pipe 18, thereby restoring the connection between the connecting pipe 18 and the connecting shell 11. When the pressure in the connecting shell 11 exceeds the supporting force provided by the spring on the second sliding member 22 again, the above-mentioned pressure relief process is repeated.

[0041] When the pressure in the reactor 6 reaches the pressure required by the sample, the staff rotates the rotating part 25, so that the rotating part 25 drives the sliding plate 24 to move upward, and stretches the spring, reducing the supporting force provided by the spring, thereby reducing the pressure on the second sliding part 22, so that the pressure in the connecting shell 11 can easily push the second sliding part 22 open, and the second sliding part 22 drives the first limiting frame 23 to release the limit on the first sliding part 14, thereby realizing the pressure relief of the gas in the connecting shell 11 and the reactor 6, and the pressure relief process can be repeated as described above (during the pressure relief process, the monitoring equipment monitors the changes of the sample under the reduced pressure environment).

[0042] When the pressure in the reactor 6 is stabilized, all related equipment is turned off, and then the staff takes out the sample. When the sample needs to be tested again, the staff adjusts the squeezing force of the rotating member 25 on the spring and repeats the above test steps.

[0043] Embodiment 2: Based on embodiment 1, Figure 4 , Figure 8 and Fig. 9As shown, it also includes: a second limit frame 41, which is slidably connected to the first fixed member 12 and is used to limit the moving distance of the first sliding member 14. The second limit frame 41 is limitedly matched with the first fixed shell 13. It also includes: an adjustment component, which is arranged in the connecting shell 11 and is used to adjust the position of the second limit frame 41. The adjustment component includes: a second fixed member 42, which is fixedly connected to the fixed frame 16; a rotating member 43, which is rotatably connected to the second fixed member 42, and a threaded groove is arranged in the rotating member 43. The second limit frame 41 is fixedly connected to a fixing pin that slidably matches with the threaded groove in the rotating member 43, and a transmission member 44 is arranged between the second fixed member 42 and the rotating member 43.

[0044] In the above scheme, the second limit frame 41 is L-shaped, and when the second limit frame 41 moves to the right, the moving range of the first sliding member 14 to the left is shortened. Conversely, when the second limit frame 41 moves to the left, the moving range of the first sliding member 14 to the left is increased. By changing the blocking position of the second limit frame 41 on the first sliding member 14, the moving range of the first sliding member 14 is changed, thereby changing the distance between the air guide member 31 and the adjacent sealing member 32, thereby realizing the adjustment of the exhaust volume of the connecting shell 11 within a certain period of time. The transmission member 44 is composed of a worm gear, and the rear side of the connecting shell 11 is fixedly connected to a rocker fixed to the worm in the transmission member 44, the worm wheel of the transmission member 44 is fixedly connected to the rotating member 43, and the transmission member 44 has a self-locking effect.

[0045] After completing the test of the compressive performance of the sample, repeat the above-mentioned pressure relief process and reduce the pressure in the connecting shell 11 and the reactor 6. During this process, the staff can drive the transmission member 44 through the rocker to act, so that the transmission member 44 drives the rotating member 43 to rotate. During the rotation of the rotating member 43, the threaded groove inside the rotating member 43 squeezes the fixed pin on the second limiting frame 41, so that the second limiting frame 41 moves to the right along the first fixed shell 13. During the movement of the second limiting frame 41, the first sliding member 14 and its attached parts are driven to move to the right, shortening the distance between all sealing members 32 and adjacent limiting grooves 33, reducing the flow rate of the gas in the connecting shell 11, so that the staff can know the state of the sample during the process of slow pressure release of the internal pressure of the reactor 6 and the connecting shell 11. On the contrary, when rapid decompression is required, the second limiting frame 41 is controlled to move to the left so that it no longer squeezes the first sliding member 14. This operation step not only increases the diversity of sample testing, but also can quickly and conveniently change the speed of pressure relief inside the reactor.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A non-metallic part pressure performance testing device, comprising a high-pressure boosting part, a high-pressure reducing part, a high-pressure relief part, an automatic control part and an auxiliary gas source part; The high-pressure boosting unit comprises a boosting valve (2) connected to the steel cylinder (1) via a pipeline, the outlet end of the boosting valve (2) is connected to a high-pressure container (3) via a pipeline, and the pipelines on both sides of the boosting valve (2) are respectively provided with a first pressure sensor (4) and a second pressure sensor (5); The high-pressure pressure reducing unit comprises a gas-controlled pressure reducing valve (7) arranged between the pressure boosting valve (2) and the reaction kettle (6); The auxiliary gas source unit comprises a low-pressure pipeline connected to the inlet of the booster valve (2), and a third pressure sensor (8) and a solenoid valve (9) are arranged on the low-pressure pipeline; The automatic control unit is a programmable controller, and the programmable controller is electrically connected to the first pressure sensor (4), the second pressure sensor (5), the third pressure sensor (8) and the solenoid valve (9) respectively; The high-pressure relief part is a pressure relief device (10) arranged at the outlet of the reaction kettle (6), and is characterized in that: The pressure relief device comprises a connecting shell (11); A first fixing member (12) is fixedly connected to the connecting shell (11), wherein a plurality of through holes are provided in the first fixing member (12); A first fixed shell (13) is fixedly connected to the first fixed member (12); the first fixed member (12) and the first fixed shell (13) are slidably connected to a first sliding member (14); a connecting frame (15) is fixedly connected to a side of the first sliding member (14) away from the first fixed shell (13); the connecting frame (15) is fixedly connected to extrusion columns (151) having the same number as the through holes on the first fixed member (12); A fixing frame (16) fixedly connected in the connecting shell (11), the fixing frame (16) being fixedly connected to a second fixing shell (17) that is slidably matched with the first sliding member (14); a connecting pipe (18) fixedly connected to and in communication with the connecting shell (11); the connecting pipe (18) is fixedly connected to and in communication with the second fixing shell (17); the first fixing member (12) is located between two sides of the connecting pipe (18); and the connecting shell (11) is fixedly connected to a third fixing shell (19) for protecting the connecting pipe (18); a limiting assembly, arranged on the third fixed shell (19) and used for limiting the movement of the first sliding member (14); A blocking component is arranged in the connection shell (11) and is used to change the blocking method of all through holes on the first fixing member (12).

2. A non-metallic component pressure performance testing device according to claim 1, characterized in that: The limiting component comprises: a fourth fixed shell (21) fixedly connected to and in communication with the connecting pipe (18); the fourth fixed shell (21) is fixedly connected to the third fixed shell (19); the first fixed member (12) is fixedly connected to a spring telescopic rod for driving the first sliding member (14) to return to its original position; The second sliding member (22) is slidably connected to the fourth fixed shell (21); a spring fixedly connected to the second sliding member (22) is arranged in the fourth fixed shell (21); a first limiting frame (23) is slidably connected to the connecting shell (11), the first fixed shell (13) and the third fixed shell (19); the first limiting frame (23) is used to limit the first sliding member (14); and the second sliding member (22) is fixedly connected to the first limiting frame (23).

3. A non-metallic component pressure performance testing device according to claim 2, characterized in that: The limiting component also includes: A sliding plate (24) is slidably connected to the fourth fixed shell (21), and the sliding plate (24) is fixedly connected to the spring on the second sliding member (22); A rotating member (25) is threadedly connected to the fourth fixed shell (21); one side of the rotating member (25) is located inside the fourth fixed shell (21) and is limitedly rotated with the sliding plate (24); the second sliding member (22) passes through the rotating member (25) and is slidably engaged with the rotating member (25); A blocking member (26) is fixedly connected to the second sliding member (22); the blocking member (26) penetrates the connecting shell (11) and the third fixed shell (19) and slidably cooperates with the two; the blocking member (26) is used to block the connecting pipe (18); an L-shaped cavity is provided in the blocking member (26); the L-shaped cavity in the blocking member (26) is used to connect the connecting pipe (18) and the connecting shell (11).

4. A non-metallic component pressure performance testing device according to claim 3, characterized in that: The blocking component comprises: The air guide member (31) has the same number as the through holes on the first fixing member (12), and is respectively fixedly connected to adjacent through holes on the first fixing member (12); The number of sealing members (32) is the same as that of the extrusion columns (151), and they are respectively fixed to adjacent extrusion columns (151); a limiting groove (33) is provided on the side of the air guide member (31) facing the adjacent sealing member (32); the limiting groove (33) is communicated with the inside of the connection shell (11); the sealing member (32) is in contact with and cooperates with the adjacent limiting groove (33); a venting groove (34) is provided on the side of the air guide member (31) facing away from the adjacent sealing member (32); the venting groove (34) is communicated with the inside of the connection shell (11); the air guide member (31) is provided with spaced inclined holes (35); the inclined holes (35) are used to connect the adjacent venting grooves (34) with the adjacent limiting grooves (33); the sealing member (32) is in sealing cooperation with the adjacent inclined holes (35).

5. A non-metallic component pressure performance testing device according to claim 4, characterized in that: The cross section of the ventilation groove (34) is a right-angled trapezoid, and the upper base of the right-angled trapezoid on the cross section of the ventilation groove (34) is close to the adjacent sealing component (32).

6. A non-metallic component pressure performance testing device according to claim 4, characterized in that: The limiting groove (33) is a truncated cone-shaped groove, and the side of the extrusion column (151) close to the adjacent vent groove (34) is also truncated cone-shaped.

7. A non-metallic component pressure performance testing device according to claim 4, characterized in that: The sealing member (32) is made of a soft deformable material, and the cross section of the sealing member (32) is a trapezoid; the side with a larger diameter on the sealing member (32) is larger than the side with a larger diameter on the adjacent limiting groove (33); the side with a smaller diameter on the sealing member (32) is larger than the side with a smaller diameter on the adjacent limiting groove (33); and the depth of the limiting groove (33) is greater than the length of the adjacent sealing member (32).

8. A non-metallic component pressure performance testing device according to claim 4, characterized in that: The edge line of the cross section of the sealing member (32) is not parallel to the edge line of the cross section of the adjacent air guide member (31) where the limiting groove (33) is located.

9. A non-metallic component pressure performance testing device according to claim 4, characterized in that: include: The second limiting frame (41) is slidably connected to the first fixing member (12) and is used to limit the moving distance of the first sliding member (14). The second limiting frame (41) is in limiting cooperation with the first fixing shell (13).

10. A non-metallic component pressure performance testing device according to claim 9, characterized in that: include: An adjustment component is arranged in the connecting shell (11) and is used to adjust the position of the second limiting frame (41), the adjustment component comprising: A second fixing member (42) fixedly connected to the fixing frame (16); A rotating member (43) is rotatably connected to the second fixed member (42); a thread groove is provided in the rotating member (43); a fixing pin slidably engaged with the thread groove in the rotating member (43) is fixedly connected to the second limiting frame (41); and a transmission member (44) is provided between the second fixed member (42) and the rotating member (43).

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