Safety blow-off valve based on intelligent monitoring
By introducing electric push rods and automatic pressure regulating devices into the safety valve, the PLC controller dynamically adjusts the spring tightness, which solves the problem that existing safety valves cannot adjust the release pressure according to demand, and achieves safe use under different air pressure conditions gas demand.
Patent Information
- Application Number
- CN202420112013.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2034-01-17
AI Technical Summary
Existing safety valves cannot adjust the release pressure at any time according to different needs, and cannot meet the safe gas needs under different air pressure conditions.
A safety discharge valve based on intelligent monitoring is designed, using an electric push rod and an automatic pressure regulating device to control the spring elasticity through the PLC controller to achieve dynamic adjustment of the discharge pressure.
The safety discharge valve can dynamically adjust the discharge pressure according to different needs, ensure the safe operation of the gas system under different air pressure conditions, and improve the flexibility and safety of gas use.
Smart Images
Figure CN222513752U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety relief valves, in particular to a safety relief valve based on intelligent monitoring. Background Art
[0002] At present, medium and high pressure gas transmission is mostly adopted in gas transmission and distribution systems, and then medium and high pressure gas is adjusted to low pressure gas through pressure regulators and sent to users. In order to ensure the safety of gas use by users, safety valves need to be installed on medium and low pressure pipelines in the gas transmission and distribution system, so as to release the pressure when the gas pressure in the medium and low pressure pipelines exceeds the set value, thereby ensuring that users use safe low pressure gas below the set value.
[0003] The current safety valve structure includes a valve body, a valve seat, a diaphragm, a spring and a valve cover, wherein the valve body has a pressure relief port and an air pressure port connected to the gas pipeline. The existing safety valve does not have the ability to adjust the release pressure at any time according to different needs. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a safety relief valve based on intelligent monitoring, which solves the problem that the safety valve is not capable of adjusting the relief pressure at any time according to different needs.
[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a safety relief valve based on intelligent monitoring, comprising a valve body and a valve cover, the valve body and the valve cover are fixedly connected by connecting bolts, a membrane is provided between the valve body and the valve cover, a valve pad is fixedly connected to the bottom of the membrane, the valve pad is arranged corresponding to the air inlet of the valve body, an automatic pressure regulating device is arranged on the top of the valve cover, a pressure relief port is arranged on the outside of the valve body, a flow meter is fixedly connected to the outer end of the pressure relief port, and the flow meter and the electric push rod in the automatic pressure regulating device are electrically connected to an external PLC controller.
[0006] Preferably, the servo motor in the electric push rod is connected to an external PLC controller via a servo driver.
[0007] Preferably, the flow meter includes a circulation pipeline and an electronic display meter, the electronic display meter is provided with an output port, and the output port is connected to a signal input module of an external PLC controller, and the circulation pipeline is communicated with an air inlet.
[0008] Preferably, the automatic pressure regulating device includes a pressure cover, a pressure pad and an electric push rod, the pressure pad is fixedly installed on the top of the diaphragm, the electric push rod is fixedly installed on the top of the valve cover, and the telescopic end of the electric push rod passes through the top of the valve cover and is fixedly connected to the pressure cover, and a spring is installed between the pressure cover and the pressure pad.
[0009] Preferably, the gland and the pressure pad are provided with protrusions on opposite sides, and the two ends of the spring are sleeved on the outside of the protrusions.
[0010] Preferably, a diaphragm guide module is installed in the valve cover, and the diaphragm guide module is fixedly connected to the top of the diaphragm.
[0011] Preferably, the diaphragm guide module comprises a guide cylinder, which is fixedly mounted inside the valve cover, and a plug rod is slidably mounted inside the guide cylinder, and the bottom of the plug rod is fixedly connected to the top of the diaphragm. Beneficial Effects
[0012] The utility model provides a safety relief valve based on intelligent monitoring. Compared with the prior art, it has the following beneficial effects:
[0013] 1. The safety relief valve based on intelligent monitoring is provided with an electric push rod. The electric push rod is provided in the relief valve, and the electric push rod can be controlled by a PLC controller, and the tightness of the spring can be easily adjusted. The relief pressure can be adjusted at any time according to different needs.
[0014] 2. The safety relief valve based on intelligent monitoring is equipped with a flow meter, which detects the flow in the valve body and transmits it to the PLC controller through a signal. A normal flow indicates that the relief valve is open normally. A small flow indicates that the relief valve is abnormally open. A zero flow indicates that the relief valve is not open. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0016] Figure 2 It is a cross-sectional view of the utility model.
[0017] Figure 3 This is a schematic diagram of the structure of the flow meter of the present utility model.
[0018] In the figure: 1. valve body; 2. valve cover; 3. connecting bolts; 4. diaphragm; 5. guide cylinder; 6. plug rod; 7. valve pad; 8. clamping pad; 9. electric push rod; 10. pressure cover; 11. spring; 12. pressure relief port; 13. flow meter. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-3 The utility model provides a technical solution: a safety relief valve based on intelligent monitoring, comprising a valve body 1 and a valve cover 2, the valve body 1 and the valve cover 2 are fixedly connected by connecting bolts 3, a membrane 4 is provided between the valve body 1 and the valve cover 2, a valve pad 7 is fixedly connected to the bottom of the membrane 4, the valve pad 7 is arranged corresponding to the air inlet of the valve body 1, an automatic pressure regulating device is arranged on the top of the valve cover 2, a pressure relief port 12 is arranged on the outside of the valve body 1, a flow meter 13 is fixedly connected to the outer end of the pressure relief port 12, and the flow meter 13 and the electric push rod 9 in the automatic pressure regulating device are both electrically connected to an external PLC controller.
[0021] Furthermore, the servo motor in the electric push rod 9 is connected to the external PLC controller through a servo driver, the flow meter 13 includes a circulation pipeline and an electronic display meter, the electronic display meter is provided with an output port, and the output port is connected to the signal input module of the external PLC controller, and the circulation pipeline is connected to the pressure relief port 12.
[0022] The automatic pressure regulating device includes a gland 10, a clamping pad 8 and an electric push rod 9. The clamping pad 8 is fixedly mounted on the top of the diaphragm 4, the electric push rod 9 is fixedly mounted on the top of the valve cover 2, and the telescopic end of the electric push rod 9 passes through the top of the valve cover 2 and is fixedly connected to the gland 10. A spring 11 is installed between the gland 10 and the clamping pad 8. Protrusions are provided on the opposite sides of the gland 10 and the clamping pad 8, and both ends of the spring 11 are sleeved on the outside of the protrusions. The electric push rod 9 is provided in the relief valve, and the electric push rod 9 can be controlled by a PLC controller, so that the tightness of the spring 11 can be easily adjusted to adapt to different air pressures.
[0023] A diaphragm guide module is installed in the valve cover 2, and the diaphragm guide module is fixedly connected to the top of the diaphragm 4. The diaphragm guide module includes a guide cylinder 5, which is fixedly installed inside the valve cover 2. An insert rod 6 is slidably installed in the guide cylinder 5, and the bottom of the insert rod 6 is fixedly connected to the top of the diaphragm 4. The diaphragm guide module plays a guiding role, so that the valve pad 7 can correspond to the air inlet.
[0024] During operation, the relief valve is connected to the gas pipeline. When the pressure in the gas pipeline is relatively high, the membrane 4 is pushed open by the airflow, and the gas is discharged from the pressure relief port 12 into other pipelines. The traditional diffuser valve does not have an automatic pressure regulating device, and its pressure relief threshold is inconveniently fixed and cannot be adjusted according to demand. An electric push rod 9 is arranged in the relief valve, and the electric push rod 9 can be controlled by a PLC controller, and the tightness of the spring 11 can be conveniently adjusted to adapt to different air pressures. The flow meter 13 detects the flow in the valve body 1, and transmits it to the PLC controller through a signal. If the flow is normal, it means that the relief valve is opened normally. When the flow is small, it proves that the relief valve is opened abnormally. When the flow is zero, it means that the relief valve is not opened.
[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.
Claims
1. A safety relief valve based on intelligent monitoring, comprising a valve body (1) and a valve cover (2), wherein the valve body (1) and the valve cover (2) are fixedly connected by connecting bolts (3), a membrane (4) is provided between the valve body (1) and the valve cover (2), a valve pad (7) is fixedly connected to the bottom of the membrane (4), and the valve pad (7) is provided corresponding to the air inlet of the valve body (1), and is characterized in that: An automatic pressure regulating device is arranged on the top of the valve cover (2), a pressure relief port (12) is arranged on the outside of the valve body (1), a flow meter (13) is fixedly connected to the outer end of the pressure relief port (12), and the flow meter (13) and the electric push rod (9) in the automatic pressure regulating device are both electrically connected to an external PLC controller.
2. The safety relief valve based on intelligent monitoring according to claim 1 is characterized in that: The servo motor in the electric push rod (9) is connected to an external PLC controller via a servo driver.
3. The safety relief valve based on intelligent monitoring according to claim 1 is characterized in that: The flow meter (13) comprises a flow pipe and an electronic display meter, the electronic display meter is provided with an output port, and the output port is connected to a signal input module of an external PLC controller, and the flow pipe is in communication with an air inlet.
4. The safety relief valve based on intelligent monitoring according to claim 1 is characterized in that: The automatic pressure regulating device comprises a gland (10), a pressure pad (8) and an electric push rod (9), wherein the pressure pad (8) is fixedly mounted on the top of the diaphragm (4), the electric push rod (9) is fixedly mounted on the top of the valve cover (2), and the telescopic end of the electric push rod (9) passes through the top of the valve cover (2) and is fixedly connected to the gland (10), and a spring (11) is installed between the gland (10) and the pressure pad (8).
5. The safety relief valve based on intelligent monitoring according to claim 4 is characterized in that: The pressure cover (10) and the pressure pad (8) are both provided with protrusions on opposite sides, and the two ends of the spring (11) are sleeved on the outside of the protrusions.
6. The safety relief valve based on intelligent monitoring according to claim 1 is characterized in that: A diaphragm guide module is installed in the valve cover (2), and the diaphragm guide module is fixedly connected to the top of the diaphragm (4).
7. The safety relief valve based on intelligent monitoring according to claim 6 is characterized in that: The diaphragm guide module comprises a guide cylinder (5), wherein the guide cylinder (5) is fixedly mounted inside the valve cover (2), and an insertion rod (6) is slidably mounted inside the guide cylinder (5), wherein the bottom of the insertion rod (6) is fixedly connected to the top of the diaphragm (4).