Fire-retardant adjusting valve for natural gas pipeline

Abstract

The utility model discloses a fire-retardant adjusting valve for a natural gas pipeline, and relates to the field of natural gas pipelines. The natural gas flow regulating valve comprises the valve pipe, the front end and the rear end of the valve pipe are provided with the gas inlet and the gas outlet respectively, the regulating valve is arranged in the valve pipe, the fire retardant mechanism and the regulating valve are arranged, a valve element rotates through output of a controller, and therefore the flow of natural gas is regulated, and the natural gas flow regulating valve is convenient to use. The valve core is provided with a first valve port, a second valve port and a third valve port, and the valve ports are respectively aligned with the gas inlet, the gas outlet and the fire-retardant mechanism at different valve core rotating positions so as to realize different functions, for example, when natural gas burns, the controller can receive corresponding signals and drive the valve core to rotate, so that the valve core can be opened and closed. When natural gas flows, the first valve port turns to the closed position of the valve element pipe to cut off flowing of the natural gas to the gas outlet, and meanwhile, the third valve port faces the fire retardant pipe to guide flames to the fire retardant mechanism to be extinguished.

Description

Technical Field

[0001] The utility model relates to the field of natural gas pipelines, in particular to a fire-blocking regulating valve for natural gas pipelines. Background Art

[0002] The flame-blocking regulating valve for natural gas pipeline is a specially designed valve, which is generally used to control the flow of natural gas pipeline and prevent the spread of flame when necessary.

[0003] Existing fire-blocking valves for natural gas pipelines usually have complex internal structures, including fire-blocking plates, seals and other components, and these structures will produce a certain resistance when natural gas passes through, thereby affecting the flow rate. Moreover, the fire-blocking plate is a key component in the fire-blocking valve, and its material and thickness have a direct impact on the flow of natural gas. Thicker fire-blocking plates or materials with higher resistance will increase the friction and resistance when natural gas passes through, thereby reducing the flow rate. In order to further improve the practicality of fire-blocking valves for natural gas pipelines, a new type of fire-blocking regulating valve for natural gas pipelines can be provided at this time, which can not affect the flow rate of natural gas without affecting the fire blocking, thereby improving the overall practicality. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a fire-blocking regulating valve for a natural gas pipeline to solve the technical problem that the traditional fire-blocking valve for a natural gas pipeline affects the flow.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fire-blocking regulating valve for a natural gas pipeline, comprising a valve pipe, wherein the front end and the rear end of the valve pipe are respectively provided with an air inlet and an air outlet, wherein a regulating valve is arranged inside the valve pipe, wherein the regulating valve comprises a valve core pipe, wherein a valve core is rotatably connected inside the valve core pipe, wherein a first valve port, a second valve port and a third valve port are arranged on the valve core, and the valve core is arranged in a spherical shape;

[0006] The first valve port and the second valve port are provided at the front end and the rear end of the valve core, the third valve port is provided at one side of the valve core, the first valve port, the second valve port and the third valve port are connected, a controller is provided at the top of the valve core tube, and the output end of the controller is connected to the valve core;

[0007] A fire-blocking mechanism is arranged on one side of the third valve port, and the fire-blocking mechanism comprises a fire-blocking tube, a fire-blocking plate groove is arranged in the middle of the fire-blocking tube, a fire-blocking plate is arranged in the fire-blocking plate groove, and a pressure relief port is arranged at the rear end of the fire-blocking plate.

[0008] By adopting the above technical solution, the design of the valve tube provides a clear natural gas flow path, making the connection between the gas inlet and the gas outlet more direct and efficient, and the internal regulating valve structure, especially the combination of the valve core tube and the valve core, allows precise control of the flow of natural gas to adapt to different usage requirements.

[0009] Furthermore, a plurality of fire barrier sheets are provided, and the plurality of fire barrier sheets are in contact with each other.

[0010] By adopting the above technical solution, the abutment of multiple fire barrier sheets increases the path length and difficulty of flame passage, improves the fire barrier effect, and the contact between adjacent fire barrier sheets can reduce the possibility of gas leakage and enhance the sealing of the entire fire barrier mechanism.

[0011] Furthermore, a plurality of fire-dividing holes are provided on the plurality of fire-blocking sheets, and the materials of the plurality of fire-blocking sheets are ceramic, glass fiber, and mineral wool, respectively.

[0012] By adopting the above technical solution, the design of the fire separation holes can disperse the flame into smaller fire sources, reduce the temperature and energy of the flame, and help extinguish the flame. In addition, the fire barrier sheets are made of ceramics, glass fiber, mineral wool and other materials. These materials have excellent high temperature resistance and can effectively withstand the heat of the flame.

[0013] Furthermore, a blocking mechanism is provided at the inner front end of the fire-blocking tube, and the blocking mechanism includes a rotating motor.

[0014] By adopting the above technical solution, the barrier mechanism can quickly close the natural gas passage when necessary to prevent the flame from entering the area outside the fire-blocking tube, and the rotating motor as the power source of the barrier mechanism provides a fast and reliable response capability.

[0015] Furthermore, a gear set is provided at the output end of the rotating motor, and the rotating rod is driven to rotate through the gear set.

[0016] By adopting the above technical solution, the rotating motor can efficiently transmit power to the rotating rod through the gear set transmission, thereby realizing rapid rotation of the baffle plate. Moreover, this transmission method has a compact structure, reduces space occupancy, and is conducive to realizing efficient functions in a limited space.

[0017] Furthermore, a blocking plate is provided on the rotating rod, and the blocking plate is used to block the natural gas, thereby preventing the natural gas pipeline from entering the fire-blocking pipe during normal use.

[0018] By adopting the above technical solution, the baffle plate can effectively block the flow of natural gas under normal conditions, ensuring that the fire-blocking tube only works when needed. In addition, the position of the baffle plate can be controlled by rotating the rod, so that remote or automatic operation can be achieved, thereby improving convenience of use.

[0019] Furthermore, a sealing ring is provided on one side of the baffle plate, the sealing ring abuts against the valve core tube, and the sealing ring is used to further improve the sealing performance of the baffle plate.

[0020] By adopting the above technical solution, the sealing ring enhances the sealing performance between the baffle plate and the valve core tube to prevent natural gas leakage, and by improving the sealing performance, the sealing ring further improves the safety of the entire valve system.

[0021] Furthermore, the gas inlet is used to introduce natural gas, and the gas outlet is used to lead out natural gas.

[0022] By adopting the above technical solution, the clear design of the air inlet and outlet makes the flow direction of the natural gas clear, avoiding confusion during use. In addition, this design helps to achieve standardization and modularization of the natural gas pipeline, making it easier to install and maintain.

[0023] Furthermore, the valve tube is made of a steel tube, and the valve core is made of carbon steel.

[0024] By adopting the above technical solution, the steel pipe as the material of the valve pipe has good mechanical strength and corrosion resistance, which ensures the service life of the valve, while the valve core is made of carbon steel, which has high hardness and wear resistance and can maintain stable performance during frequent operations.

[0025] Furthermore, the controller and the rotating motor are both electrically connected to an external temperature sensor, and the external temperature sensor is used to sense the temperature inside the tube to facilitate starting the controller and the rotating motor.

[0026] By adopting the above technical solution, the external temperature sensor can monitor the temperature inside the pipeline in real time. Once abnormal temperature is detected, the controller and the rotating motor can be quickly started to perform corresponding operations. In addition, this automated control system improves the valve's response speed and handling capabilities to emergencies, greatly reducing safety risks.

[0027] In summary, the utility model mainly has the following beneficial effects:

[0028] 1. The utility model provides a fire-blocking mechanism and a regulating valve, wherein the valve core is rotated by the output of the controller to adjust the flow of natural gas, and the valve core is provided with a first valve port, a second valve port and a third valve port. These valve ports are respectively aligned with the air inlet, the air outlet and the fire-blocking mechanism at different valve core rotation positions to achieve different functions. Specifically, the first valve port is aligned with the air inlet, and the second valve port is aligned with the air outlet, thereby ensuring that natural gas can flow smoothly from the air inlet and flow out from the air outlet. However, when the natural gas burns, the controller will receive a corresponding signal. And drive the valve core to rotate, so that the first valve port will turn to the closed part of the valve core tube to cut off the flow of natural gas to the gas outlet, and the second valve port will face the gas inlet to achieve reverse closure. At the same time, the third valve port will face the fire-blocking tube to guide the flame to the fire-blocking mechanism for extinguishing. In addition, the fire-blocking plate is arranged in the fire-blocking plate groove of the fire-blocking tube, and multiple fire-blocking plates are closely abutted to enhance the fire-blocking effect. These fire-blocking plates are also provided with multiple fire-dividing holes for dispersing and reducing the energy of the flame. In addition, the materials of the fire-blocking plates, such as ceramics, glass fibers and mineral wool, have good high temperature resistance and fire-blocking properties;

[0029] 2. The utility model provides a blocking mechanism, in which the gear set output by the rotating motor drives the rotating rod to rotate, which can effectively drive the blocking plate to rotate. The setting of the blocking plate can effectively block the natural gas from entering the fire-blocking tube when the natural gas pipeline is in normal use, thereby ensuring that the fire-blocking tube only works when needed, avoiding unnecessary energy waste and potential safety risks. The sealing ring abuts against the valve core tube, effectively improving the sealing performance of the blocking plate and preventing leakage of natural gas when the blocking plate is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0031] Figure 2 It is a top view of the three-dimensional structure of the utility model;

[0032] Figure 3 It is a schematic diagram of a three-dimensional structure of a top view of the utility model;

[0033] Figure 4 It is a schematic diagram of the front cross-sectional three-dimensional structure of the utility model.

[0034] In the figure: 1. valve tube; 2. air inlet; 3. air outlet; 4. fire-blocking mechanism; 401. fire-blocking tube; 402. fire-blocking plate groove; 403. fire-blocking plate; 404. pressure relief port; 5. regulating valve; 501. controller; 502. valve core tube; 503. valve core; 504. first valve port; 505. second valve port; 506. third valve port; 6. blocking mechanism; 601. rotating motor; 602. rotating rod; 603. blocking plate; 604. sealing ring. DETAILED DESCRIPTION

[0035] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0036] The following describes an embodiment of the utility model based on its overall structure.

[0037] Embodiment 1:

[0038] A fire-blocking regulating valve for a natural gas pipeline, such as Figure 1-Figure 4 As shown, it includes a valve tube 1, the front end and the rear end of the valve tube 1 are respectively provided with an air inlet 2 and an air outlet 3, the interior of the valve tube 1 is provided with a regulating valve 5, the regulating valve 5 includes a valve core tube 502, the interior of the valve core tube 502 is rotatably connected with a valve core 503, the valve core 503 is provided with a first valve port 504, a second valve port 505 and a third valve port 506, the valve core 503 is spherical, the first valve port 504 and the second valve port 505 are provided at the front end and the rear end of the valve core 503, the third valve port 506 is provided at one side of the valve core 503, the first valve port 504, the second valve port 505 and the third valve port 506 are interconnected, and a regulating valve 5 is provided at the top of the valve core tube 502. The controller 501 is connected to the valve core 503, and a fire-blocking mechanism 4 is arranged on one side of the third valve port 506. The fire-blocking mechanism 4 comprises a fire-blocking tube 401, and a fire-blocking plate groove 402 is arranged in the middle of the fire-blocking tube 401. A fire-blocking plate 403 is arranged in the fire-blocking plate groove 402, and a pressure relief port 404 is arranged at the rear end of the fire-blocking plate 403. Through the design of the valve tube 1 and the internal regulating valve 5, effective control of the natural gas flow is achieved, and the adjustment flexibility of the pipeline system is improved. The integrated design of the fire-blocking mechanism 4 enhances the safety of the valve, can effectively prevent the flame from spreading in the event of a fire, and protect the integrity of the pipeline system.

[0039] See also Figure 1 , Figure 2 , Figure 3A plurality of fire barrier sheets 403 are provided, and the plurality of fire barrier sheets 403 are abutted against each other. The stacked structure of the plurality of fire barrier sheets 403 increases the thermal resistance, improves the fire barrier effect, effectively slows down the flame propagation speed, and the abutting design reduces the possibility of gas leakage and enhances the sealing performance of the fire barrier mechanism 4.

[0040] See also Figure 3 A plurality of fire-dividing holes are provided on the plurality of fire-blocking sheets 403. The materials of the plurality of fire-blocking sheets 403 are ceramic, glass fiber, and mineral wool, respectively. The design of the fire-dividing holes helps to disperse the flame energy, reduce the flame temperature, and improve the durability of the fire-blocking sheets 403. The fire-blocking sheets 403 of different materials provide multiple fire-blocking mechanisms, such as the high thermal stability of ceramics, the thermal insulation performance of glass fiber, and the fire resistance of mineral wool, which together enhance the fire-blocking effect.

[0041] Embodiment 2:

[0042] See also Figure 1 , Figure 2 , Figure 3 A blocking mechanism 6 is provided at the inner front end of the fire-blocking tube 401. The blocking mechanism 6 includes a rotating motor 601. The blocking mechanism 6 can be quickly started in an emergency situation, and the blocking plate 603 is driven by the rotating motor 601 to close the fire-blocking tube 401 to prevent the flame from spreading further. Moreover, the automatic control of the rotating motor 601 improves the response speed, reduces the need for human intervention, and reduces the operational risk.

[0043] See also Figure 1 , Figure 2 , Figure 3 A gear set is provided at the output end of the rotating motor 601, and the rotating rod 602 is driven to rotate through the gear set. The transmission efficiency of the gear set is high, which can ensure the rapid and accurate movement of the rotating rod 602 and the blocking plate 603. Moreover, through the deceleration effect of the gear set, the rotating motor 601 can provide sufficient torque to overcome possible mechanical resistance and ensure the reliable movement of the blocking plate 603.

[0044] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 A blocking plate 603 is provided on the rotating rod 602. The blocking plate 603 is used to block natural gas and prevent the natural gas pipeline from entering the fire-blocking tube 401 during normal use. The blocking plate 603 remains open under normal circumstances and does not affect the normal flow of natural gas. However, it can be quickly closed in an emergency to cut off the flame propagation path. The sturdy design of the rotating rod 602 ensures the stability and reliability of the blocking plate 603, and it can work normally even in high pressure or high temperature environments.

[0045] See also Figure 1 , Figure 2, Figure 3 A sealing ring 604 is provided on one side of the baffle plate 603, and the sealing ring 604 abuts against the valve core tube 502. The sealing ring 604 is used to further improve the sealing performance of the baffle plate 603. The sealing ring 604 enhances the sealing performance between the baffle plate 603 and the valve core tube 502, and prevents leakage of natural gas when the baffle plate is closed. The wear resistance and corrosion resistance of the sealing ring 604 help to extend the service life of the baffle mechanism 6 and reduce the frequency of maintenance and replacement.

[0046] See also Figure 1 , Figure 2 , Figure 3 The air inlet 2 is used to introduce natural gas, and the air outlet 3 is used to lead out natural gas. The clear design of air inlet 2 and air outlet 3 simplifies the layout and installation process of the pipeline system, reduces the risk of installation errors, and the optimized air flow channel reduces the pressure loss and turbulence of natural gas when passing through the valve, thereby improving the transportation efficiency of the pipeline system.

[0047] See also Figure 1 , Figure 2 , Figure 3 The material of the valve pipe 1 is a steel pipe, and the material of the valve core 503 is carbon steel. The steel pipe has good mechanical strength and corrosion resistance, and can withstand the high pressure and high temperature environment of the natural gas pipeline. Moreover, the carbon steel valve core 503 has excellent wear resistance and impact resistance, and can maintain stable performance during frequent switching operations.

[0048] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The controller 501 and the rotating motor 601 are both electrically connected to the external temperature sensor, and the external temperature sensor is used to sense the temperature inside the pipe, so as to start the controller 501 and the rotating motor 601. The temperature sensor can monitor the internal temperature of the pipeline in real time, detect abnormal conditions in time and trigger corresponding safety measures. Moreover, the electrical connection with the controller 501 and the rotating motor 601 realizes automatic control and improves the response speed and accuracy of the valve system.

[0049] The implementation principle of the utility model is as follows: first, the valve core tube 502 of the regulating valve 5 is installed inside the valve tube 1, ensuring that the valve core 503 can rotate freely inside the valve core tube 502, and at the same time installing the fire-blocking mechanism 4, connecting the fire-blocking tube 401 with the corresponding part of the valve tube 1, and ensuring that a plurality of fire-blocking plates 403 are placed inside the fire-blocking plate groove 402, and each fire-blocking plate 403 is provided with a fire-dividing hole;

[0050] Subsequently, the blocking mechanism 6 is installed at the inner front end of the flame arrester tube 401, the rotating motor 601 is connected to the gear set and the rotating rod 602 to ensure that the rotating motor 601 can drive the rotating rod 602 to rotate, and the blocking plate 603 is set on the rotating rod 602;

[0051] When in use, under normal circumstances, natural gas enters the valve pipe 1 from the air inlet 2, and flows to the air outlet 3 through the first valve port 504 and the second valve port 505 of the valve core 503 of the regulating valve 5. When the internal pressure of the natural gas pipeline is too high or flame propagation occurs, the external temperature sensor senses the abnormal temperature and sends a signal to the controller 501 and the rotating motor 601. When the controller 501 receives the signal, it drives the valve core 503 to rotate, closes the first valve port 504 and the second valve port 505, and prevents the natural gas from continuing to pass. At the same time, after receiving the signal, the rotating motor 601 drives the rotating rod 602 and the blocking plate 603 to rotate through the gear set, so that the blocking plate 603 forms a certain angle with the axis of the fire-blocking tube 401, and guides the natural gas to enter the fire-blocking tube 401.

[0052] The natural gas entering the flame arrester tube 401 is dispersed and cooled when passing through the plurality of flame arrester sheets 403, and the flame is blocked or extinguished. At the same time, the gas and heat generated by partial combustion are discharged through the flame distribution holes and the pressure relief port 404 on the flame arrester sheets 403.

[0053] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0054] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A fire-blocking regulating valve for a natural gas pipeline, characterized in that: The valve tube (1) comprises a valve tube (1), wherein the front end and the rear end of the valve tube (1) are respectively provided with an air inlet (2) and an air outlet (3), wherein a regulating valve (5) is arranged inside the valve tube (1), wherein the regulating valve (5) comprises a valve core tube (502), wherein a valve core (503) is rotatably connected inside the valve core tube (502), wherein a first valve port (504), a second valve port (505) and a third valve port (506) are arranged on the valve core (503), and the valve core (503) is arranged in a spherical shape; The first valve port (504) and the second valve port (505) are provided at the front end and the rear end of the valve core (503); the third valve port (506) is provided at one side of the valve core (503); the first valve port (504), the second valve port (505) and the third valve port (506) are interconnected; a controller (501) is provided at the top of the valve core tube (502); and an output end of the controller (501) is connected to the valve core (503); A fire-blocking mechanism (4) is provided on one side of the third valve port (506), the fire-blocking mechanism (4) comprising a fire-blocking tube (401), a fire-blocking plate groove (402) being provided in the middle of the fire-blocking tube (401), a fire-blocking plate (403) being provided in the fire-blocking plate groove (402), and a pressure relief port (404) being provided at the rear end of the fire-blocking plate (403).

2. The fire-blocking regulating valve for natural gas pipeline according to claim 1 is characterized in that: A plurality of the fire-blocking sheets (403) are provided, and the plurality of the fire-blocking sheets (403) are in contact with each other.

3. The fire-blocking regulating valve for natural gas pipeline according to claim 1 is characterized in that: A plurality of fire-dividing holes are provided on the plurality of fire-blocking sheets (403), and the materials of the plurality of fire-blocking sheets (403) are respectively ceramic, glass fiber, and mineral wool.

4. The fire-blocking regulating valve for natural gas pipeline according to claim 1 is characterized in that: The inner front end of the fire-blocking tube (401) is provided with a blocking mechanism (6), and the blocking mechanism (6) comprises a rotating motor (601).

5. The fire-blocking regulating valve for natural gas pipeline according to claim 4 is characterized in that: The output end of the rotating motor (601) is provided with a gear set, and the rotating rod (602) is driven to rotate through the gear set.

6. The fire-blocking regulating valve for natural gas pipeline according to claim 5 is characterized in that: The rotating rod (602) is provided with a blocking plate (603), and the blocking plate (603) is used to block the natural gas, so as to prevent the natural gas pipeline from entering the fire-blocking tube (401) during normal use.

7. The fire-blocking regulating valve for natural gas pipeline according to claim 6 is characterized in that: A sealing ring (604) is provided on one side of the baffle plate (603), and the sealing ring (604) is in contact with the valve core tube (502). The sealing ring (604) is used to further improve the sealing performance of the baffle plate (603).

8. The fire-blocking regulating valve for natural gas pipeline according to claim 1 is characterized in that: The gas inlet (2) is used to introduce natural gas, and the gas outlet (3) is used to lead out natural gas.

9. The fire-blocking regulating valve for natural gas pipeline according to claim 1 is characterized in that: The material of the valve tube (1) is a steel tube, and the material of the valve core (503) is carbon steel.

10. The fire-blocking regulating valve for natural gas pipeline according to claim 1, characterized in that: The controller (501) and the rotating motor (601) are both electrically connected to an external temperature sensor, and the external temperature sensor is used to sense the temperature inside the tube so as to start the controller (501) and the rotating motor (601).

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