Automatic control system for explosion-proof safety valve of pressure vessel

Abstract

The utility model relates to pressure relief safety valve technical field discloses a kind of pressure vessel explosion-proof safety valve automatic control system, the utility model includes the pressure vessel being equipped with screw hole mounting seat;Pressure relief safety valve, with the detachable sealing connection of screw hole mounting seat, the side wall of pressure relief safety valve is equipped with the pressure relief pipe interface for discharging, the pressure relief pipe interface is communicated with external matched pipeline and the passage that is closed or opened is equipped in the pressure relief safety valve, and the passage is communicated with the pressure vessel and the pressure relief pipe interface. The utility model makes liquid medium discharge through matched pipeline by the way of side discharging through pressure relief pipe interface, avoids the corrosion of spring.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief safety valve technology, and in particular to an automatic control system for an explosion-proof safety valve for pressure vessels. Background Technology

[0002] A pressure relief valve is a device that automatically opens and closes based on the system's working pressure. It is typically installed on equipment or pipelines in closed systems to protect the system's safety.

[0003] The existing patent publication number (CN205226509U) discloses a pressure relief valve, including an inlet valve body and an outlet valve body connected together. The inlet and outlet valve bodies are coaxially threaded and meshed, forming a pressure relief cavity in the middle. The inlet valve body has an inlet, and the outlet valve body has an outlet, with the inlet and outlet coaxially arranged. The pressure relief cavity is equipped with a pressure relief device, and a filter screen is installed at the front end of the inlet of the inlet valve body via a flange. The pressure relief valve provided by this utility model uses the cooperation of a conical plug and a spring. When the inlet water pressure increases, the conical plug is forced to open and close wider, achieving pressure relief; when the inlet water pressure decreases, the spring force pushes the conical plug to return to its original position, playing a role in preventing reverse flow. The filter screen installed at the front end of the inlet of the inlet valve body via a flange can pass larger particles, preventing the plug from being stuck and thus avoiding valve leakage or affecting the pressure relief capacity.

[0004] However, it cannot adjust the pressure threshold triggered by the pressure relief valve, and the liquid medium will come into contact with the spring during the pressure relief process. Over time, the spring may rust, leading to a reduction in its lifespan. Utility Model Content

[0005] This utility model provides an automatic control system for explosion-proof safety valves of pressure vessels to solve the technical problems mentioned in the background art.

[0006] The present invention adopts the following technical solution to solve the above-mentioned technical problems: An automatic control system for an explosion-proof safety valve of a pressure vessel includes the following components; A pressure vessel equipped with a screw-hole mounting base; A pressure relief safety valve is detachably and sealingly connected to the screw hole mounting base. The side wall of the pressure relief safety valve is provided with a pressure relief pipe interface for discharge. The pressure relief pipe interface is connected to an external matching pipeline. The pressure relief safety valve is provided with a closable or openable channel, and the channel connects the pressure vessel and the pressure relief pipe interface. A rubber sealing plug is installed in the internal channel of the pressure relief safety valve and seals the channel under the push of a spring. When the pressure inside the pressure vessel exceeds a specified threshold, the force acting on the end face of the rubber sealing plug is greater than the thrust of the spring. After the rubber sealing plug moves to the side of the spring, it releases the seal with the pressure relief safety valve.

[0007] Preferably, the pressure relief safety valve includes a main valve body and an adjusting part, wherein the front end of the main valve body is provided with a threaded sealing head for threaded sealing connection with the threaded mounting seat, the main valve body is provided with a conical pressure relief hole, the rubber sealing plug is fixed to the front end of the rigid pressure plate, the rear end of the rigid pressure plate is fixed with a columnar support body, the rear end of the columnar support body is fixed with a sealing slide plate, the two ends of the spring respectively abut against the sealing slide plate and the adjusting part, the spring pushes the rubber sealing plug forward so that it abuts against the conical pressure relief hole, and rotating the adjusting part can change the initial compression of the spring and change its trigger compression threshold.

[0008] Preferably, the main valve body is provided with a guide rod hole, and a guide rod is fixedly provided on the front end face of the hard pressure plate. The guide rod is slidably inserted into the guide rod hole. The stability of the columnar support, hard pressure plate, and rubber sealing plug during the pressure relief process is improved by the cooperation between the guide rod and the guide rod hole.

[0009] Preferably, the adjustment part is a hollow rigid shell. A pressure sensor is embedded and fixed at one end of the adjustment part inserted into the main valve body, and the tail end of the spring abuts against the pressure sensor. The adjustment part is equipped with a battery and an electronic display part connected to the pressure sensor via a signal line. The battery provides wired power to the electronic display part and the pressure sensor. The electronic display part is embedded at the tail end of the adjustment part. After rotating and adjusting the adjustment part, the pressure of the spring can be detected by the pressure sensor and fed back to the electronic display part.

[0010] Preferably, the front end of the main valve body is fixedly provided with an external hexagonal portion.

[0011] Preferably, a sealing gasket groove is provided on the front end face of the main valve body, and a sealing gasket is embedded in the sealing gasket groove.

[0012] The advantages and positive effects of this utility model are: This device uses a side discharge method, allowing the liquid medium to be discharged through the pressure relief pipe interface and the matching pipeline, thus avoiding corrosion of the spring.

[0013] The compression stroke of the spring can be adjusted by rotating the adjustment part. The greater the compression of the spring, the higher the trigger threshold of the spring. Furthermore, the pressure applied to the pressure sensor by the spring can be digitally fed back to the electronic display for easy adjustment. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the installation structure of this utility model; Figure 2 yes Figure 1 A schematic diagram of the structure of the pressure relief safety valve 17 after disassembly; Figure 3 yes Figure 2 Enlarged schematic diagram of the pressure relief safety valve 17; Figure 4 This is a schematic diagram of the internal structure of the pressure relief safety valve 17; Figure 5 This is a schematic diagram of the internal structure of the pressure relief safety valve 17.

[0016] The following labels are used in the attached diagram: 10. Pressure vessel; 11. Screw hole mounting base; 12. Main valve body; 13. Adjustment section; 14. Pressure relief pipe interface; 15. External hexagonal part; 16. Threaded sealing head; 17. Pressure relief safety valve; 18. Sealing gasket; 19. Sealing gasket groove; 20. Electronic display section; 21. Pressure sensor; 22. Spring; 23. Columnar support body; 24. Hard pressure plate; 25. Rubber sealing plug; 26. Conical pressure relief hole; 27. Guide rod; 28. Guide rod hole; 29. ​​Sealing slide plate. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0018] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance. The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings: like Figure 1-5 As shown, the automatic control system for explosion-proof safety valves of pressure vessels according to this utility model includes the following components; A pressure vessel 10 is equipped with a screw hole mounting base 11; The pressure relief safety valve 17 is detachably and sealingly connected to the screw hole mounting base 11. The side wall of the pressure relief safety valve 17 is provided with a pressure relief pipe interface 14 for discharge. The pressure relief pipe interface 14 is connected to an external matching pipeline. The pressure relief safety valve 17 is provided with a channel that can be closed or opened, and the channel connects the pressure vessel 10 and the pressure relief pipe interface 14. A rubber sealing plug 25 is disposed in the internal channel of the pressure relief safety valve 17 and, under the push of the spring 22, seals and closes the channel inside the pressure relief safety valve 17. When the pressure inside the pressure vessel 10 exceeds a specified threshold, the force acting on the end face of the rubber sealing plug 25 is greater than the thrust of the spring 22. After the rubber sealing plug 25 moves toward the spring 22, it releases the seal with the pressure relief safety valve 17.

[0019] Preferably, the pressure relief safety valve 17 includes a main valve body 12 and an adjusting part 13. The main valve body 12 has a threaded sealing head 16 at its front end for threaded sealing connection with the threaded mounting seat 11. The main valve body 12 has a tapered pressure relief hole 26 inside. A rubber sealing plug 25 is fixed to the front end of a rigid pressure plate 24. A columnar support 23 is fixed to the rear end of the rigid pressure plate 24. A sealing slide 29 is fixed to the rear end of the columnar support 23. Both ends of a spring 22 abut against the sealing slide 29 and the adjusting part 13 respectively (e.g., ...). Figure 4 Under the action of spring 22, the rubber sealing plug 25 is pushed forward to seal against the conical pressure relief hole 26. By rotating the adjustment part 13, the initial compression of spring 22 can be changed, thus changing its trigger compression threshold.

[0020] Preferably, in order to further improve the stability of the fit between the rubber sealing plug 25 and the conical pressure relief hole 26 (because the rapid passage of the medium in the narrow channel during the high-pressure relief process will cause the components inside the narrow channel to vibrate), a guide rod hole 28 is provided in the main valve body 12, and a guide rod 27 is fixedly provided on the front end face of the hard pressure plate 24. The guide rod 27 is slidably inserted into the guide rod hole 28. The stability of the columnar support 23, the hard pressure plate 24, and the rubber sealing plug 25 during the pressure relief process is improved by the fit between the guide rod 27 and the guide rod hole 28.

[0021] Preferably, the adjustment part 13 is a hollow rigid shell. A pressure sensor 21 is embedded and fixed at one end of the adjustment part 13 inserted into the main valve body 12, and the tail end of the spring 22 abuts against the pressure sensor 21. The adjustment part 13 is equipped with a battery and an electronic display part 20 connected to the pressure sensor 21 via a signal line. The battery provides wired power to the electronic display part 20 and the pressure sensor 21. The electronic display part 20 is embedded at the tail end of the adjustment part 13. After rotating and adjusting the adjustment part 13, the pressure of the spring 22 can be detected by the pressure sensor 21 and fed back to the electronic display part 20.

[0022] Preferably, the front end of the main valve body 12 is fixedly provided with an external hexagonal portion 15, which facilitates installation with a wrench.

[0023] Preferably, a sealing gasket groove 19 is provided on the front end face of the main valve body 12, and a sealing gasket 18 is embedded in the sealing gasket groove 19. After the pressure relief safety valve 17 is installed (e.g. Figure 1 The sealing gasket 18 and the upper end face of the screw hole mounting seat 11 are sealed against each other.

[0024] It should be emphasized that the embodiments described in this utility model are illustrative rather than limiting. Therefore, this utility model is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this utility model are also within the scope of protection of this utility model.

Claims

1. An automatic control system for an explosion-proof safety valve of a pressure vessel, comprising the following components; A pressure vessel (10) is provided with a screw hole mounting base (11); characterized in that It also includes a pressure relief safety valve (17), which is detachably and sealingly connected to the screw hole mounting base (11). The side wall of the pressure relief safety valve (17) is provided with a pressure relief pipe interface (14) for discharge. The pressure relief pipe interface (14) is connected to an external matching pipeline. The pressure relief safety valve (17) is provided with a channel that can be closed or opened, and the channel connects the pressure vessel (10) and the pressure relief pipe interface (14). A rubber sealing plug (25) is installed in the internal channel of the pressure relief safety valve (17) and seals the channel inside the pressure relief safety valve (17) under the push of the spring (22). When the pressure inside the pressure vessel (10) exceeds a specified threshold, the force acting on the end face of the rubber sealing plug (25) is greater than the thrust of the spring (22). After the rubber sealing plug (25) moves to the side of the spring (22), it releases the seal with the pressure relief safety valve (17).

2. The automatic control system of a pressure vessel explosion relief valve according to claim 1, characterized in that: The pressure relief safety valve (17) includes a main valve body (12) and an adjustment part (13). The main valve body (12) has a threaded sealing head (16) at the front end for threaded sealing connection with the threaded mounting seat (11). The main valve body (12) has a conical pressure relief hole (26). The rubber sealing plug (25) is fixed to the front end of the hard pressure plate (24). The hard pressure plate (24) has a columnar support (23) fixed at the tail end. The columnar support (23) has a sealing slide (29) fixed at the tail end. The two ends of the spring (22) abut against the sealing slide (29) and the adjustment part (13) respectively. The spring (22) pushes the rubber sealing plug (25) forward so that it seals against the conical pressure relief hole (26). Rotating the adjustment part (13) can change the initial compression of the spring (22) and change its trigger compression threshold.

3. The automatic control system of a pressure vessel explosion relief safety valve according to claim 2, characterized in that: The main valve body (12) is equipped with a guide rod hole (28), and the front end face of the hard pressure plate (24) is fixedly provided with a guide rod (27). The guide rod (27) is slidably inserted into the guide rod hole (28). The stability of the column support (23), hard pressure plate (24), and rubber sealing plug (25) during the depressurization process is improved by the cooperation of the guide rod (27) and the guide rod hole (28).

4. The automatic control system of a pressure vessel explosion relief safety valve according to claim 2, characterized in that: The adjustment part (13) is a hollow rigid shell. A pressure sensor (21) is embedded and fixed at one end of the adjustment part (13) inserted into the main valve body (12). The tail end of the spring (22) abuts against the pressure sensor (21). The adjustment part (13) is equipped with a battery and an electronic display part (20) connected to the pressure sensor (21) via a signal line. The battery provides wired power to the electronic display part (20) and the pressure sensor (21). The electronic display part (20) is embedded at the tail end of the adjustment part (13). After rotating and adjusting the adjustment part (13), the pressure of the spring (22) can be detected by the pressure sensor (21) and fed back to the electronic display part (20).

5. The automatic control system of the pressure vessel explosion relief valve according to any one of claims 2-4, characterized in that: The front end of the main valve body (12) is fixedly provided with an external hexagonal part (15).

6. An automatic control system for an explosion-proof safety valve of a pressure vessel according to any one of claims 2-4, characterized in that: A sealing gasket groove (19) is provided on the front end face of the main valve body (12), and a sealing gasket (18) is embedded in the sealing gasket groove (19).

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