Safety valve pressure relief value adjusting equipment

Abstract

The utility model provides safety valve pressure relief value adjusting equipment, and relates to the technical field of automatic pressure relief devices. The safety valve pressure relief value adjusting device comprises a pressure adjusting valve, a pressure sensor and a digital display device. According to the relief value adjusting equipment for the safety valve, the exhaust end of the to-be-adjusted safety valve is connected with the pressure sensor, and the pressure sensor is connected to the digital display device. The safety valve is ventilated through the air source, the air pressure is regulated through the pressure regulating valve, when the safety valve starts to release pressure after reaching a set value, the pressure sensor can accurately capture the pressure change of the exhaust end of the safety valve, a signal is transmitted to the digital display device, and the pressure value captured by the pressure sensor is displayed through the digital display meter. According to the safety valve pressure relief value adjusting equipment, unnecessary disassembly and assembly operation can be avoided, the operation process is simplified, the operation process is simpler, meanwhile, an electric signal mode replaces a traditional exhaust sound signal mode, traditional manual detection is replaced with electronic detection, and the detection and setting accuracy is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of automatic pressure relief devices, and more particularly, to a safety valve pressure relief value adjustment device. Background Art

[0002] Currently, there is no unified and good detection scheme in the industry for setting and testing the pressure relief value of safety valves. When setting the pressure relief value, since the safety valve regulator itself has no scale value, it cannot be adjusted accurately at one time, and only the exhaustive method can be used, constantly trying and making mistakes. The specific method is as follows: First, connect a pressure regulating valve and a pressure gauge at the inlet, then adjust the safety valve knob to set a value randomly, and then turn on the gas and slowly increase the pressure to see at what pressure it starts to relieve pressure and exhaust gas. There are three detection methods for whether it exhausts gas, namely listening with ears, detecting with leak detection liquid, and connecting a pressure gauge at the outlet to detect. If it starts to exhaust gas before reaching the expected pressure, then turn the safety valve knob a little larger; if it starts to exhaust gas only after exceeding the expected pressure, then turn the safety valve knob a little smaller. Through multiple operations, the pressure relief value of the safety valve is set.

[0003] The prior art has the following objective disadvantages: 1. Judging whether the safety valve starts to relieve pressure by listening with ears is not accurate enough. If only relying on listening with ears, the accuracy is poor, and the requirement for environmental noise is also very high; 2. If using leak detection liquid to judge whether the safety valve starts to relieve pressure. First, when there is a slight leak in the safety valve, the foam will be very small and concentrated inside the outlet, making it difficult to observe. Second, if the residue after using the leak detection liquid is not cleaned up thoroughly, it may corrode the valve body over time, resulting in valve component damage; 3. If a pressure gauge is connected at the outlet to judge whether the safety valve starts to relieve pressure, then a problem needs to be faced. After each adjustment and test, the pressure gauge needs to be removed to exhaust gas, and multiple disassembly and installation will cause wear of the interface, affecting the accuracy of subsequent tests. Summary of the Utility Model

[0004] The purpose of the embodiments of this application is to provide a safety valve pressure relief value adjustment device, which can make the detection and setting of the safety valve more convenient and improve the accuracy of the detection and setting of the safety valve.

[0005] In a first aspect, the embodiments of this application provide a safety valve pressure relief value adjustment device, which includes a pressure regulating valve, a pressure sensor, and a digital display device; one end of the pressure regulating valve is used to connect to a gas source, and the other end is used to connect to the intake end of the safety valve to be adjusted; one end of the pressure sensor is connected to the digital display device, and the other end is used to connect to the exhaust end of the safety valve to be adjusted; the digital display device includes a digital display meter, and the digital display meter is electrically connected to the pressure sensor and displays its pressure value.

[0006] In the above implementation process, the safety valve pressure relief value adjustment device of the present application connects a pressure sensor to the exhaust end of the safety valve to be adjusted, and connects the pressure sensor to a digital display device. First, air is supplied to the safety valve through an air source and the air pressure is adjusted by a pressure regulating valve. When the safety valve starts to relieve pressure after reaching the set value, the pressure sensor can accurately capture the pressure change at the exhaust end of the safety valve, and transmit the signal to the digital display device, and the digital display shows the pressure value captured by the pressure sensor. The safety valve pressure relief value adjustment device of the present application can avoid unnecessary disassembly and assembly operations, simplifies the operation process, makes the operation process more simple, and at the same time replaces the traditional exhaust sound signal with an electric signal method, and replaces the traditional manual detection with electronic detection, greatly improving the accuracy of detection and setting.

[0007] In a possible implementation, the digital display device further includes at least one alarm component, and the at least one alarm component is electrically connected to the digital display.

[0008] In the above implementation process, after setting the alarm pressure value of the alarm component on the digital display, first, air is supplied to the safety valve through an air source and the air pressure is adjusted by a pressure regulating valve. When the safety valve starts to relieve pressure after reaching the set value, the pressure sensor can accurately capture the pressure change at the exhaust end of the safety valve, and transmit the signal to the digital display device, and the digital display shows the pressure value captured by the pressure sensor. When the pressure value displayed on the digital display reaches the alarm value, the alarm component gives an alarm prompt.

[0009] In a possible implementation, the digital display device includes a first alarm component and a second alarm component, so that after the pressure value of the digital display reaches the first preset value and the second preset value respectively, the first alarm component and the second alarm component light up.

[0010] In the above implementation process, the first alarm component and the second alarm component can give alarm prompts at different pressure values respectively.

[0011] In a possible implementation, the safety valve pressure relief value adjustment device further includes a pressure gauge, and the pressure gauge is arranged at the outlet end of the pressure regulating valve.

[0012] In the above implementation process, the pressure gauge is used to display the pressure value after being regulated by the pressure regulating valve.

[0013] In a possible implementation, the safety valve pressure relief value adjustment device further includes an exhaust device, and the exhaust device includes an exhaust pipe and a valve. One end of the exhaust pipe is used to connect to the safety valve to be adjusted, and the other end is used for exhausting. The valve is installed in the exhaust pipe to control the connection or disconnection of the exhaust pipe.

[0014] In the above implementation process, the exhaust device can be used to discharge the gas at the exhaust end of the safety valve. On the one hand, after the safety valve to be adjusted is installed on the safety valve pressure relief value adjustment device of the present application, the valve can be opened to discharge the air through the exhaust pipe, so that the pressure at the exhaust end of the safety valve to be adjusted is zeroed; on the other hand, after the adjustment of the safety valve to be adjusted is completed, the valve can be opened to discharge the air through the exhaust pipe, and then the safety valve to be adjusted can be removed from the safety valve pressure relief value adjustment device of the present application.

[0015] In a possible implementation, the valve is a solenoid valve. The solenoid valve and the digital display are connected in parallel. The exhaust device further includes an exhaust switch, and the exhaust switch is used to control whether the solenoid valve is connected to the circuit.

[0016] In the above implementation process, when it is necessary to discharge the air through the exhaust pipe, the solenoid valve is turned on or off by controlling the exhaust switch, so that the solenoid valve is opened; when the air discharge is completed, the solenoid valve is turned on or off by controlling the exhaust switch, so that the solenoid valve is closed.

[0017] In a possible implementation, the safety valve pressure relief value adjustment device further includes a first three-way joint. The first three-way joint has a first joint, a second joint and a third joint. The first joint is used to connect the intake end of the safety valve to be adjusted, the second joint is connected to the pressure sensor, and the third joint is connected to one end of the exhaust pipe.

[0018] In a possible implementation, the digital display device further includes a power supply, and the power supply provides electrical energy for the digital display.

[0019] In a possible implementation, the power supply includes a rechargeable battery.

[0020] In the above implementation process, the safety valve pressure relief value adjustment device of the present application uses a more portable rechargeable battery to replace the power cord plug of the traditional electronic detection device, which greatly facilitates the work and portability of the test personnel and avoids the limitation of the need for a power socket.

[0021] In a possible implementation, the digital display device further includes a charging plug, and the charging plug is used to connect to an external power supply to charge the rechargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1Schematic structural diagram of the safety valve pressure relief value adjustment device according to an embodiment of the present application.

[0024] Icon: 10 - Safety valve pressure relief value adjustment device; 100 - Safety valve to be adjusted; 101 - Inlet end; 102 - Exhaust end; 200 - Pressure regulating valve; 300 - Pressure sensor; 301 - Built-in cable; 400 - Digital display device; 410 - Digital display meter; 420 - PG7 waterproof connector; 431 - First alarm component; 432 - Second alarm component; 440 - Rechargeable battery; 450 - Charging plug; 500 - Pressure gauge; 510 - Second three-way joint; 600 - Exhaust device; 610 - Solenoid valve; 620 - Exhaust switch; 630 - First three-way joint; 640 - 6mm straight-through joint; 650 - 6mm hose; 660 - 6mm through-board quick connector. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application described and illustrated herein generally can be arranged and designed in a variety of different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of this application are customarily placed during use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0029] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not require the components to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0030] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0031] Please refer to Figure 1 , the present application provides a safety valve pressure relief value adjusting device 10, and the safety valve pressure relief value adjusting device 10 is used to adjust a safety valve to be adjusted 100, including setting the pressure relief value of the safety valve to be adjusted 100 or detecting the pressure relief value of the safety valve to be adjusted 100. The safety valve to be adjusted 100 has an air inlet end 101 and an exhaust end 102. When the pressure value at the air inlet end 101 of the safety valve to be adjusted 100 reaches the pressure relief value of the safety valve to be adjusted 100, the exhaust end 102 of the safety valve to be adjusted 100 starts to exhaust.

[0032] The safety valve pressure relief value adjusting device 10 includes a pressure regulating valve 200, a pressure sensor 300, and a digital display device 400.

[0033] Among them, the pressure regulating valve 200, also known as a pressure control valve, is used to drive the valve to change the cross-sectional area between the valve core and the valve seat to control process parameters such as the flow rate, temperature, and pressure of the pipeline medium.

[0034] One end of the pressure regulating valve 200 is used to connect to the air source, and the other end is used to connect to the air inlet end 101 of the safety valve to be adjusted 100. The pressure regulating valve 200 is used to adjust the pressure of the gas entering the safety valve to be adjusted 100.

[0035] Optionally, the other end of the pressure regulating valve 200 is connected to the air inlet end 101 of the safety valve to be adjusted 100 through a pipeline, and copy rings are provided at the connection between the pipeline and the air inlet end 101 of the safety valve to be adjusted 100.

[0036] It should be noted that if the pressure regulating valve 200 does not come with a pressure gauge 500, a pressure gauge 500 needs to be set at the outlet end of the pressure regulating valve 200, and the pressure gauge 500 is used to display the pressure value after being regulated by the pressure regulating valve 200.

[0037] In Figure 1In the illustrated embodiment, the pressure gauge 500 is connected to the outlet end of the pressure regulating valve 200 through the second three-way joint 510, and the three joints of the second three-way joint 510 are respectively connected to the pipeline through the copy forest.

[0038] The pressure sensor 300 is a device or apparatus that can sense a pressure signal and convert the pressure signal into an available output electrical signal according to a certain rule.

[0039] One end of the pressure sensor 300 is connected to the digital display device 400, and the other end is used to connect to the exhaust end 102 of the safety valve 100 to be adjusted.

[0040] In the Figure 1 illustrated embodiment, the pressure sensor 300 includes an input end and an output end. The other end of the input end of the pressure sensor 300 is used to connect to the exhaust end 102 of the safety valve 100 to be adjusted. The output end of the pressure sensor 300 has a built-in cable 301, and the pressure sensor 300 is connected to the digital display device 400 through the built-in cable 301.

[0041] The digital display device 400 includes a digital display meter 410. The digital display meter 410 is an instrument that displays the measured value in decimal digital form, including a voltage type meter and a frequency type meter. The voltage type meter accepts voltage or current signals. Its working principle is to convert the input voltage signal through analog-to-digital conversion into corresponding intermittent signals, generally binary-coded decimal signals, and then display the numbers through digital decoding and optoelectronic display devices. The frequency type meter accepts pulse or frequency signals. Its working principle is to count and logically control the input signal, accumulate the number of pulses within a certain time interval, and convert the counted number of pulses into corresponding binary-coded decimal signals, and then realize digital display through decoding. It can also directly accept digital signals from detection instruments and realize digital display after transformation and data processing.

[0042] The digital display meter 410 is electrically connected to the pressure sensor 300 and displays its pressure value.

[0043] In the Figure 1 illustrated embodiment, the digital display device 400 further includes a PG7 waterproof connector 420, and the pressure sensor 300 is connected to the circuit including the digital display meter 410 through the PG7 waterproof connector 420.

[0044] The pressure relief value adjustment device 10 of the present application connects a pressure sensor 300 to the exhaust end 102 of the safety valve 100 to be adjusted, and connects the pressure sensor 300 to a digital display device 400. First, air is supplied to the safety valve through an air source and the air pressure is adjusted by a pressure regulating valve 200. When the safety valve starts to relieve pressure after reaching the set value, the pressure sensor 300 can accurately capture the pressure change at the exhaust end 102 of the safety valve and transmit the signal to the digital display device, and the pressure value captured by the pressure sensor 300 is displayed through the digital display meter 410. The pressure relief value adjustment device 10 of the present application can avoid unnecessary disassembly and installation operations, simplifies the operation process, makes the operation process more simple, and at the same time replaces the traditional exhaust sound signal with an electric signal method and replaces the traditional manual detection with electronic detection, greatly improving the accuracy of detection and setting.

[0045] Optionally, the digital display device 400 further includes at least one alarm component, and the at least one alarm component is electrically connected to the digital display meter 410.

[0046] After setting the alarm pressure value of the alarm component on the digital display meter 410 of the pressure relief value adjustment device 10 of the present application, first, air is supplied to the safety valve through an air source and the air pressure is adjusted by the pressure regulating valve 200. When the safety valve starts to relieve pressure after reaching the set value, the pressure sensor 300 can accurately capture the pressure change at the exhaust end 102 of the safety valve and transmit the signal to the digital display device, and the pressure value captured by the pressure sensor 300 is displayed through the digital display meter 410. When the pressure value displayed by the digital display meter 410 reaches the alarm value, the alarm component gives an alarm prompt.

[0047] In the embodiment as Figure 1 shown, the digital display device 400 includes a first alarm component 431 and a second alarm component 432, so that after the pressure value of the digital display meter 410 reaches the first preset value and the second preset value respectively, the first alarm component 431 and the second alarm component 432 light up.

[0048] The first alarm component 431 and the second alarm component 432 can respectively give alarm prompts at different pressure values. For example, the first alarm component 431 is used to give an alarm prompt when the safety valve 100 to be adjusted starts to relieve pressure, and the second alarm component 432 is used to give an alarm prompt when a higher pressure is reached.

[0049] Optionally, both the first alarm component 431 and the second alarm component 432 are alarm indicator lights. When the safety valve 100 to be adjusted starts to relieve pressure, the indicator light of the first alarm component 431 lights up; when a higher preset pressure is reached, the indicator light of the second alarm component 432 lights up.

[0050] The digital display device 400 further includes a power supply, and the power supply provides electrical energy for the digital display meter 410 and at least one alarm component.

[0051] Optionally, the power supply includes a rechargeable battery 440.

[0052] The pressure relief value adjustment device 10 of the present application uses a more portable rechargeable battery 440 to replace the power cord plug of the traditional electronic detection device, which greatly facilitates the work and portability of testers and avoids the limitation of the need for a power socket.

[0053] Optionally, the digital display device 400 further includes a charging plug 450, and the charging plug 450 is used to connect to an external power source to charge the rechargeable battery 440.

[0054] In the Figure 1 shown embodiment, the power supply uses a 24V rechargeable battery 440. The design of the 24V rechargeable battery 440 is safer compared to a 220v power socket. The charging plug 450 is used to connect to an external 220V to 24V charger, and the charging plug 450 is connected to the rechargeable battery 440 through a PG7 waterproof connector 420.

[0055] The pressure relief value adjustment device 10 of the safety valve further includes an exhaust device 600. The exhaust device 600 includes an exhaust pipe and a valve. One end of the exhaust pipe is used to connect to the safety valve 100 to be adjusted, and the other end is used for exhausting. The valve is installed in the exhaust pipe to control the connection or disconnection of the exhaust pipe.

[0056] The exhaust device 600 can be used to discharge the gas at the exhaust end 102 of the safety valve. On the one hand, after the safety valve 100 to be adjusted is installed on the pressure relief value adjustment device 10 of the present application, the valve can be opened to exhaust the air through the exhaust pipe, so that the pressure at the exhaust end 102 of the safety valve 100 to be adjusted returns to zero. On the other hand, after the adjustment of the safety valve 100 to be adjusted is completed, the valve can be opened to exhaust the air through the exhaust pipe, and then the safety valve 100 to be adjusted can be removed from the pressure relief value adjustment device 10 of the present application.

[0057] In the Figure 1 shown embodiment, the valve is a solenoid valve 610. The solenoid valve 610 and the digital display 410 are connected in parallel, and the rechargeable battery 440 is used to supply power to the solenoid valve 610. The exhaust device 600 further includes an exhaust switch 620, and the exhaust switch 620 is used to control whether the solenoid valve 610 is connected to the circuit.

[0058] If the solenoid valve 610 is a normally closed solenoid valve 610, when it is necessary to exhaust gas through the exhaust pipe, the solenoid valve 610 is connected to the circuit by controlling the exhaust switch 620 to open the solenoid valve 610; when the gas exhaust is completed, the solenoid valve 610 is disconnected from the circuit by controlling the exhaust switch 620 to close the solenoid valve 610; if the solenoid valve 610 is a normally open solenoid valve 610, when it is necessary to exhaust gas through the exhaust pipe, the solenoid valve 610 is disconnected from the circuit by controlling the exhaust switch 620 to open the solenoid valve 610; when the gas exhaust is completed, the solenoid valve 610 is connected to the circuit by controlling the exhaust switch 620 to close the solenoid valve 610.

[0059] Optionally, the safety valve pressure relief value adjusting device 10 further includes a first three-way joint 630. The first three-way joint 630 has a first joint, a second joint and a third joint. The first joint is used to connect to the intake end 101 of the safety valve 100 to be adjusted, the second joint is connected to the pressure sensor 300, and the third joint is connected to one end of the exhaust pipe.

[0060] In the embodiment as Figure 1 shown, the first joint of the first three-way joint 630 is connected to the exhaust end 102 of the safety valve 100 to be adjusted through a copy ring, the second joint of the first three-way joint 630 is connected to the pressure sensor 300 through a copy ring, the third joint of the first three-way joint 630 is connected to a 6mm straight-through through a copy ring, the 6mm straight-through is connected to a 6mm hose 650 through a copy ring, the 6mm hose 650 is connected to the solenoid valve 610 through a 6mm panel quick connector 660, and the solenoid valve 610 exhausts through the 6mm panel quick connector 660.

[0061] Please refer to Figure 1, an embodiment of the present application provides a safety valve pressure relief value adjustment device 10, which includes a pressure regulating valve 200, a pressure sensor 300, a digital display device 400, a pressure gauge 500, and an exhaust device 600. One end of the pressure regulating valve 200 is used to connect to a gas source, and the other end is used to connect to the intake end 101 of the safety valve 100 to be adjusted. The pressure regulating valve 200 is used to adjust the pressure of the gas entering the safety valve 100 to be adjusted. The pressure gauge 500 is connected to the outlet end of the pressure regulating valve 200 through a second three-way joint 510; the pressure sensor 300 includes an input end and an output end. The other end of the input end of the pressure sensor 300 is used to connect to the exhaust end 102 of the safety valve 100 to be adjusted. The output end of the pressure sensor 300 has a built-in cable 301. The pressure sensor 300 is connected to the digital display device 400 through the built-in cable 301; the digital display device 400 includes a digital display meter 410, a PG7 waterproof connector 420, a first alarm component 431, a second alarm component 432, a 24V rechargeable battery 440, and a charging plug 450. The digital display meter 410 is connected to the pressure sensor 300 through the PG7 waterproof connector 420 and displays its pressure value. The first alarm component 431 is used to give an alarm prompt when the safety valve 100 to be adjusted starts to relieve pressure. The second alarm component 432 is used to give an alarm prompt when a higher pressure is reached. Both the first alarm component 431 and the second alarm component 432 are alarm indicator lights. The 24V rechargeable battery 440 is used to supply power to the digital display meter 410, the first alarm component 431, and the second alarm component 432. The charging plug 450 is used to connect to an external 220V to 24V charger. The charging plug 450 is connected to the rechargeable battery 440 through the PG7 waterproof connector 420; the exhaust device 600 includes a first three-way joint 630, a solenoid valve 610, an exhaust switch 620, a 6mm straight-through 640, a 6mm hose 650, and a 6mm through-board quick connector 660. The first three-way joint 630 has a first joint, a second joint, and a third joint. The first joint is used to connect to the intake end 101 of the safety valve 100 to be adjusted. The second joint is connected to the pressure sensor 300. The third joint is connected to the 6mm straight-through. The 6mm straight-through is connected to the 6mm hose 650. The 6mm hose 650 is connected to the solenoid valve 610 through the 6mm through-board quick connector 660. The solenoid valve 610 exhausts through the 6mm through-board quick connector 660. The rechargeable battery 440 is used to supply power to the solenoid valve 610. The exhaust switch 620 is used to control whether the solenoid valve 610 is connected to the circuit. The solenoid valve 610 is a normally closed solenoid valve 610. When it is necessary to exhaust gas through the exhaust pipe, the solenoid valve 610 is connected to the circuit by controlling the exhaust switch 620, so that the solenoid valve 610 is opened; when the exhaust gas is completed, the solenoid valve 610 is not connected to the circuit by controlling the exhaust switch 620, so that the solenoid valve 610 is closed.

[0062] The method for setting the pressure relief value of the safety valve 100 to be adjusted by using the safety valve pressure relief value adjustment device 10 of the present application is as follows:

[0063] S1. Connect the safety valve 100 to be adjusted to the equipment as shown in Figure 1 . Connect the inlet end 101 of the safety valve 100 to be adjusted to the pressure regulating valve 200, and connect the exhaust end 102 of the safety valve 100 to be adjusted to the pressure sensor 300;

[0064] S2. Set the alarm value and error range of the alarm component on the digital display 410. It should be noted that if no error is allowed, the error range is set to zero;

[0065] S3. Open the exhaust switch 620 to start exhausting, and close the exhaust switch 620 until the pressure at the outlet returns to zero;

[0066] S4. Turn the knob of the safety valve 100 to be adjusted to the maximum value;

[0067] S5. Open the pressure regulating valve 200 and adjust the pressure to the pressure relief critical value of the safety valve 100 to be adjusted. The pressure relief critical value is based on the pressure relief value required for the safety valve 100 to be adjusted, and the pressure relief critical value is slightly greater than the pressure relief value required for the safety valve 100 to be adjusted;

[0068] S6. Slowly turn the knob of the safety valve 100 to be adjusted smaller, and observe the digital display 410 and the alarm component. If the first alarm component 431 lights up, immediately stop adjusting the knob of the safety valve 100 to be adjusted. At this time, the pressure relief value of the safety valve is set;

[0069] S7. Lock the knob of the safety valve with the set pressure relief value and seal it with a lead seal;

[0070] S8. Close the pressure regulating valve 200, open the exhaust switch 620 to exhaust the gas, and remove the safety valve with the set pressure relief value from the equipment.

[0071] The method for detecting the pressure relief value of the safety valve 100 to be adjusted by using the pressure relief value adjustment device 10 of the present application is as follows:

[0072] S1. Connect the safety valve 100 to be adjusted to the equipment as shown in Figure 1 . Connect the inlet end 101 of the safety valve 100 to be adjusted to the pressure regulating valve 200, and connect the exhaust end 102 of the safety valve 100 to be adjusted to the pressure sensor 300;

[0073] S2. Set the alarm value and error range of the alarm component on the digital display 410. It should be noted that if no error is allowed, the error range is set to zero;

[0074] S3. Open the exhaust switch 620 to start exhausting, and close the exhaust switch 620 until the pressure at the outlet returns to zero;

[0075] S4. Open the pressure regulating valve 200 and slowly increase the pressure to the critical value at which the pressure relief valve relieves pressure.

[0076] S5. Observe the first alarm component 431. If the first alarm component 431 lights up, immediately stop adjusting the pressure of the pressure regulating valve 200.

[0077] S6. Observe whether the reading of the pressure gauge 500 is consistent with the pressure relief value or within the allowable tolerance range. If it is consistent, it means that the pressure relief value is set accurately. If not, it needs to be reset.

[0078] S7. Close the pressure regulating valve 200, open the exhaust switch 620 to exhaust the gas, and remove the safety valve from the equipment.

[0079] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A safety valve pressure relief value adjustment device, characterized in that, The safety valve pressure relief value adjustment device includes a pressure regulating valve, a pressure sensor, and a digital display device; One end of the pressure regulating valve is used to connect to the air source, and the other end is used to connect to the intake end of the safety valve to be adjusted; One end of the pressure sensor is connected to the digital display device, and the other end is used to connect to the exhaust end of the safety valve to be adjusted; The digital display device includes a digital display meter, and the digital display meter is electrically connected to the pressure sensor and displays its pressure value.

2. The safety valve pressure relief value adjustment device according to claim 1, characterized in that, The digital display device further includes at least one alarm component, and the at least one alarm component is electrically connected to the digital display meter.

3. The safety valve pressure relief value adjustment device according to claim 1, characterized in that, The digital display device includes a first alarm component and a second alarm component, so that after the pressure value of the digital display meter reaches a first preset value and a second preset value respectively, the first alarm component and the second alarm component light up.

4. The safety valve pressure relief value adjustment device according to claim 1, characterized in that, The safety valve pressure relief value adjustment device further includes a pressure gauge, and the pressure gauge is arranged at the outlet end of the pressure regulating valve.

5. The safety valve pressure relief value adjustment device according to claim 1, characterized in that, The safety valve pressure relief value adjustment device further includes an exhaust device, and the exhaust device includes an exhaust pipe and a valve. One end of the exhaust pipe is used to connect to the safety valve to be adjusted, and the other end is used for exhaust. The valve is installed in the exhaust pipe to control the connection or disconnection of the exhaust pipe.

6. The safety valve pressure relief value adjustment device according to claim 5, characterized in that, The valve is a solenoid valve, the solenoid valve and the digital display meter are connected in parallel, and the exhaust device further includes an exhaust switch, and the exhaust switch is used to control whether the solenoid valve is connected to the circuit.

7. The safety valve pressure relief value adjusting device according to claim 5, characterized in that, The safety valve pressure relief value adjustment device further includes a first three-way joint, and the first three-way joint has a first joint, a second joint, and a third joint. The first joint is used to connect to the intake end of the safety valve to be adjusted, the second joint is connected to the pressure sensor, and the third joint is connected to one end of the exhaust pipe.

8. The safety valve pressure relief value adjustment device according to claim 1, characterized in that, The digital display device further includes a power supply, and the power supply provides electrical energy for the digital display meter.

9. The safety valve pressure relief value adjusting device according to claim 8, characterized in that, The power supply includes a rechargeable battery.

10. The safety valve pressure relief value adjusting device according to claim 9, characterized in that, The digital display device further includes a charging plug, and the charging plug is used to connect to an external power supply to charge the rechargeable battery.

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