Pressure pipeline over-flow-velocity protection valve

Abstract

The invention discloses an over-flow-speed protection valve for a pressure pipeline. The over-flow-speed protection valve comprises a valve body, a protection assembly and a reset assembly. A valve element is installed on the valve body, a pull rod is fixed to the upper end of the valve element, a first pressure spring used for pushing the pull rod to reset is installed at the upper end of the pull rod, and the valve body is communicated with a piston cylinder. A clamping groove is formed in the outer wall of the pull rod, a clamping block is inserted into the clamping groove in a matched mode, and a second compression spring used for pushing the piston to reset is installed in the piston cylinder. A tooth groove of the tooth part is correspondingly meshed with a tooth groove of the rack, and a motor used for driving the tooth part to rotate is fixed to the valve body. A terminal controls a motor to drive a pull rod to move upwards, so that a valve element is opened, a mechanical structure is adopted to trigger protection, the valve is not affected by on-off of a power source, remote control is matched, opening and closing of the valve are achieved, after the valve acts, it is not needed that workers go to the site to manually restore the original shape, and the situations of pipeline damage and discharged liquid leakage caused by abnormal flow speed are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline safety, and in particular relates to an over-flow protection valve for a pressure pipeline. Background Art

[0002] At present, in the pressure pipeline system, there is an emergency shut-off valve installed, which also plays the role of a pressure steel pipe protection valve to some extent, but it generally works only when a pipe bursts. When the medium over-flow velocity condition occurs in the pipeline, it may not cause a pipe burst accident, but this medium over-flow velocity condition may also cause damage to downstream pipelines and equipment. If the flow rate is too high, it may cause pipeline vibration, noise, wear and other problems.

[0003] Publication date 2023-12-01; Publication (Announcement) No. CN117146043A; Disclosed is a pressure pipeline overflow protection valve, the pressure pipeline overflow protection valve includes: a valve, a monitoring module, a control module, and a communication module; the valve is used to control the on and off of the fluid in the pipeline; the monitoring module is used to monitor the flow rate of the fluid in the pipeline in real time; the control module is used to obtain the flow rate of the fluid collected by the monitoring module, and control the valve based on preset conditions; the communication module is used to realize the communication of control module information. The present invention uses a monitoring module to perform real-time detection of the flow rate of the fluid in the pipeline, and sends monitoring information to the central control system. At the same time, the present invention uses a control module to open or close the valve body according to the flow rate of the fluid, thereby realizing the protection of the valve and the pipeline;

[0004] The above-mentioned existing technical solutions have the following defects: the above-mentioned adopts pure electrical control. Since the pipeline is laid outdoors and the extension range is relatively large, maintenance and repair cannot be carried out in time when there is a power outage or power failure. At this time, when the flow rate is abnormal, the pipeline cannot be protected, and there are certain safety hazards. Summary of the invention

[0005] The present invention aims at the problem that there are hidden dangers in the electrical control detection in the prior art, and proposes the following technical solution:

[0006] A pressure pipeline over-flow protection valve, comprising: a valve body, a protection component and a reset component;

[0007] The valve body is equipped with a valve core, a pull rod is fixed on the upper end of the valve core, a first compression spring for pushing the pull rod to reset is installed on the upper end of the pull rod, and the valve body is connected with a piston cylinder;

[0008] The protection assembly includes a piston, a push rod and a lever. The piston is installed in the piston cylinder. The lower end of the push rod is connected to the piston. The outer wall of the pull rod is provided with a slot. A block is inserted in the slot. The block is engaged with one end of the lever. The lever is connected with a reset spring. A second spring for pushing the piston to reset is installed in the piston cylinder. The lifting of the push rod pushes the lever to rotate around the fulcrum.

[0009] The reset assembly includes a tooth portion and a rack, the tooth portion is a semicircular gear, the rack is fixedly connected to the pull rod, the tooth grooves of the tooth portion are correspondingly meshed with the tooth grooves of the rack, and the valve body is fixed with a motor for driving the tooth portion to rotate.

[0010] As a preferred embodiment of the above technical solution, flanges are welded at the inlet and outlet at both ends of the valve body, and the valve body is equipped with a flow meter, which is installed between the water outlet of the valve body and the valve core. A sealing ring is arranged in the groove opened on the outer surface of the valve core, and a filter cartridge is installed at the water inlet of the valve body. The flow meter is used to collect the flow rate and flow velocity, and is used to cooperate with the protection component, so as to remotely determine whether the closed-circuit action is triggered by abnormal flow velocity or damage to the protection component.

[0011] As a preferred embodiment of the above technical solution, a slider is provided in the piston cylinder, the upper end of the slider is fixed to the piston, a connecting rod is fixed to the lower end of the slider, a wing plate is fixed to the lower end of the connecting rod, and the wing plate is arranged in the guide channel of the valve body. The slider is arranged to slide in the piston cylinder, and the arc-shaped upper surface of the wing plate, such as the wing of an airplane, will generate an upward pressure difference on the wing plate after the flow rate exceeds the preset value, pushing the wing plate upward, so that the wing plate pushes the slider, and further the slider drives the piston to slide. A dual flow rate abnormality trigger structure is adopted to effectively sense flow rate changes, and a purely mechanical trigger structure is adopted to effectively avoid failure of the equipment protection structure due to power outages.

[0012] As a preferred embodiment of the above technical solution, an articulated seat is fixed to the upper end of the piston cylinder, the lever is hinged to the articulated seat at the fulcrum, the reset spring is arranged at an end away from the blocking block, the lever is connected to the upper end of the reset spring, and the lower end of the reset spring is fixedly connected to the upper end of the piston cylinder; the articulated seat is connected by the lever, and the lever is reset under the action of the elastic force of the reset spring, so that the original state is quickly maintained after the triggering action is completed, preparing for the opening of the valve core.

[0013] As a preferred embodiment of the above technical solution, an open groove is provided at the upper end of the push rod, and the lever passes through the open groove. The open groove is arranged between the reset compression spring and the hinge seat. A stud is threadedly connected to the top of the open groove, and the lower end of the stud is arranged corresponding to the lever. The upper end of the push rod is gap-connected with one end of the lever by the open groove to filter out the influence of small fluctuations of the push rod on the lever. At the same time, the stud is installed at the upper end, and the distance between the lower end of the stud and the lever is adjusted by rotating the stud, which is used to regulate the size of the micro-motion space of the push rod and adjust the sensitivity of the push rod. It can be adjusted according to the situation.

[0014] As a preferred embodiment of the above technical solution, a protective cover is fixed to the outside of the valve body, the motor is arranged in the protective cover, the protective cover is rotatably mounted with a rotating shaft, and the tooth portion is coaxially fixedly connected with the rotating shaft; a protective cover is provided to protect each mechanical mechanism to prevent the erosion of the equipment by dust, impurities or rainwater, and at the same time to avoid the situation where the valve is triggered to close due to accidental contact.

[0015] As a preferred embodiment of the above technical solution, a compression spring receiving groove is provided at the upper end of the pull rod, the lower end of the first compression spring is arranged in the compression spring receiving groove, and the upper end of the first compression spring contacts the protective cover;

[0016] The upper end of the second compression spring is fixedly connected to the top of the piston cylinder, and the lower end of the second compression spring is fixedly connected to the piston; it is configured to balance the position of the piston under internal and external pressures to ensure that it is in a stable equilibrium state.

[0017] As a preferred embodiment of the above technical solution, a worm wheel is coaxially fixed to the rotating shaft, a worm is coaxially fixed to the driving shaft of the motor, and the worm is meshed with the worm wheel; the worm wheel and worm meshing makes the transmission stable and reliable.

[0018] As a preferred embodiment of the above technical solution, a support column is fixed to the valve body, a sliding hole is opened on the surface of the support column, and the clamping block slides through the sliding hole.

[0019] As a preferred embodiment of the above technical solution, a sensor is arranged in the valve body, a controller and a communication module are installed in the protective cover, and the communication module includes a signal transmitter and a signal receiver; the sensor detects the fluid in the pipeline in real time, and sends monitoring information to the terminal system through the communication module;

[0020] The sensor is a flow rate sensor, which is used to detect the flow rate in the pipeline. The flow rate sensor is arranged at the inlet of the valve body. When the sensor is a pressure sensor, the pressure sensor is arranged at the outlet of the valve body; when the flow rate or pressure in the pipeline exceeds the set value, the flow rate detected by the sensor is greater than the set value, and the sensor sends a signal.

[0021] The beneficial effects of the present invention are:

[0022] 1. The pull rod moves upward to drive the valve core to open the passage of the valve body. At this time, the first compression spring at the upper end of the pull rod is compressed, and the card slot and the card block are engaged, so as to shorten the pull rod and keep the valve in an open state. When the flow rate of the liquid flowing in the valve body exceeds a certain range, it will trigger the pressure difference between the upper and lower sides of the piston, thereby pushing the piston to slide, so that the piston drives the push rod to move, and the push rod movement drives the lever movement, so that the card block connected to the end of the lever is separated from the card slot, and the pull rod loses its self-locking effect. Under the push of the first compression spring, the valve core moves downward to close the passage of the valve body;

[0023] 2. The detected flow data is sent to the terminal through the flow meter. The pipeline circulation situation can be understood remotely through the flow data to determine whether to open the valve. If it is opened, the terminal controls the motor drive to drive the pull rod upward to open the valve core. The mechanical structure is used to trigger the protection, which is not affected by the power on and off and has an absolute protection effect. In conjunction with remote control, the valve can be opened and closed. After it is activated, there is no need for manual restoration on site. The combination of software and hardware can achieve good protection and protection effects, reduce labor maintenance costs, improve labor efficiency, avoid pipeline damage caused by abnormal flow rate, and eliminate liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 What is shown is a three-dimensional structural schematic diagram of a pressure pipeline over-flow protection valve in an embodiment;

[0025] Figure 2 What is shown is a schematic diagram of a cutaway three-dimensional structure in an embodiment;

[0026] Figure 3 What is shown is a schematic diagram of the internal structure of the valve body in the embodiment;

[0027] Figure 4 What is shown is a three-dimensional structural schematic diagram of the pull rod in the embodiment;

[0028] Figure 5 What is shown is a three-dimensional structural schematic diagram of the reset component in the embodiment;

[0029] Figure 6 What is shown is a schematic diagram of the three-dimensional structure of the protection component in the embodiment;

[0030] Figure 7 In the embodiment shown Figure 6 Schematic diagram of the three-dimensional structure at A in the middle;

[0031] Figure 8 What is shown is a schematic diagram of the three-dimensional structure of the upper end of the push rod in the embodiment;

[0032] 1. The valve body is provided with a plurality of air-conditioning components, and the plurality of air-conditioning components are provided with a plurality of air-conditioning components. The plurality of air-conditioning components include a plurality of air-conditioning components, and a plurality of air-conditioning components. The plurality of air-conditioning components include a plurality of air-conditioning components, and a plurality of air-conditioning components. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0034] Example

[0035] Figures 1 to 8 A pressure pipeline over-flow protection valve includes: a valve body 100, a protection component 300 and a reset component 500;

[0036] The valve body 100 is equipped with a valve core 110, a pull rod 130 is fixed on the upper end of the valve core 110, a first compression spring 150 is installed on the upper end of the pull rod 130 for pushing it to reset, and the valve body 100 is connected to a piston cylinder 170;

[0037] The protection assembly 300 includes a piston 310, a push rod 330 and a lever 350. The piston 310 is installed in the piston cylinder 170. The lower end of the push rod 330 is connected to the piston 310. The outer wall of the pull rod 130 is provided with a slot 131. The slot 131 is plugged with a block 133. The block 133 is engaged with one end of the lever 350. The lever 350 is connected with a reset spring 351. A second spring 171 for pushing the piston 310 to reset is installed in the piston cylinder 170. The lifting of the push rod 330 pushes the lever 350 to rotate around the fulcrum.

[0038] The reset assembly 500 includes a tooth portion 510 and a rack 530, wherein the tooth portion 510 is a semicircular gear, the rack 530 is fixedly connected to the pull rod 130, the tooth grooves of the tooth portion 510 are correspondingly meshed with the tooth grooves of the rack 530, and the valve body 100 is fixed with a motor 550 for driving the tooth portion 510 to rotate.

[0039] Figures 1 to 3What is shown is a specific embodiment of the present invention, as a preferred embodiment of the above technical solution, flanges 101 are respectively welded to the inlet and outlet at both ends of the valve body 100, and the valve body 100 is installed with a flow meter 103, and the flow meter 103 is installed between the water outlet of the valve body 100 and the valve core 110, and a sealing ring 111 is arranged in the groove opened on the outer surface of the valve core 110, and a filter cartridge 109 is installed at the water inlet of the valve body 100; the flow meter 103 is used to collect the flow rate and flow velocity, and is used to cooperate with the protection component 300, and can remotely determine whether the closed-circuit action is triggered by abnormal flow velocity or damage to the protection component 300.

[0040] Figures 6 to 8 What is shown is a specific embodiment of the present invention, as a preferred embodiment of the above technical solution, a slider 173 is provided in the piston cylinder 170, the upper end of the slider 173 is fixed to the piston 310, the lower end of the slider 173 is fixed with a connecting rod 175, the lower end of the connecting rod 175 is fixed with a wing plate 177, the wing plate 177 is arranged in the guide channel of the valve body 100, the slider 173 is arranged to slide in the piston cylinder 170, and the arc-shaped upper surface of the wing plate 177 is arranged, such as the wing of an airplane. When the flow rate exceeds a preset value, an upward pressure difference will be generated on the wing plate 177, pushing the wing plate 177 upward, so that the wing plate 177 pushes the slider 173, and further the slider 173 drives the piston 310 to slide, and adopts a dual flow rate abnormality trigger structure to effectively sense the flow rate change, and a purely mechanical trigger structure to effectively avoid the failure of the equipment protection structure caused by power outages.

[0041] As a preferred embodiment of the above technical solution, an articulated seat 105 is fixed to the upper end of the piston cylinder 170, and the lever 350 is hinged to the articulated seat 105 at the fulcrum, and the reset spring 351 is arranged at the end away from the block 133, and the lever 350 is connected to the upper end of the reset spring 351, and the lower end of the reset spring 351 is fixedly connected to the upper end of the piston cylinder 170; the articulated seat 105 is connected by the lever 350, and the lever 350 is reset under the action of the elastic force of the reset spring 351, so that the original state is quickly maintained after the triggering action is completed, and preparations are made for the opening of the valve core 110.

[0042] Figure 7 and Figure 8What is shown is a specific embodiment of the present invention, as a preferred embodiment of the above technical solution, an open groove 331 is provided at the upper end of the push rod 330, and the lever 350 passes through the open groove 331, and the open groove 331 is arranged between the reset compression spring 351 and the hinge seat 105, and a stud 333 is threadedly connected to the top of the open groove 331, and the lower end of the stud 333 is arranged corresponding to the lever 350. The upper end of the push rod 330 is gap-connected with one end of the lever 350 by the open groove 331 to filter out the influence of small fluctuations of the push rod 330 on the lever 350, and the stud 333 is installed at the upper end at the same time, and the distance between the lower end of the stud 333 and the lever 350 is adjusted by rotating the stud 333, so as to adjust the size of the micro-motion space of the push rod 330 and adjust the sensitivity of the push rod 330, which can be adjusted according to the situation.

[0043] Figures 1 to 3 What is shown is a specific embodiment of the present invention, as a preferred embodiment of the above technical solution, a protective cover 190 is fixed to the outside of the valve body 100, the motor 550 is arranged in the protective cover 190, the protective cover 190 is rotatably mounted with a rotating shaft 191, and the tooth portion 510 is coaxially fixedly connected with the rotating shaft 191; the protective cover 190 is provided to protect various mechanical mechanisms to prevent dust, impurities or rain from eroding the equipment, and at the same time avoid the situation where the valve is triggered to close due to accidental contact.

[0044] As a preferred embodiment of the above technical solution, a compression spring receiving groove is provided at the upper end of the pull rod 130, the lower end of the first compression spring 150 is arranged in the compression spring receiving groove, and the upper end of the first compression spring 150 is in contact with the protective cover 190;

[0045] The upper end of the second compression spring 171 is fixedly connected to the top of the piston cylinder 170, and the lower end of the second compression spring 171 is fixedly connected to the piston 310; the second compression spring 171 is provided to balance the position of the piston 310 under internal and external pressures to ensure that it is in a stable and balanced state.

[0046] Figure 5 What is shown is a specific embodiment of the present invention, as a preferred embodiment of the above technical solution, the rotating shaft 191 is coaxially fixed with a worm wheel 193, the driving shaft of the motor 550 is coaxially fixed with a worm 551, and the worm 551 is meshed with the worm wheel 193; the worm wheel and worm meshing makes the transmission stable and reliable.

[0047] As a preferred embodiment of the above technical solution, a support column 107 is fixed to the valve body 100 , a sliding hole is opened on the surface of the support column 107 , and the clamping block 133 slides through the sliding hole.

[0048] As a preferred embodiment of the above technical solution, a sensor is provided in the valve body 100, a controller and a communication module are installed in the protective cover 190, and the communication module includes a signal transmitter and a signal receiver; the sensor detects the fluid in the pipeline in real time, and sends monitoring information to the terminal system through the communication module;

[0049] The sensor is a flow rate sensor, which is used to detect the flow rate in the pipeline. The flow rate sensor is arranged at the inlet of the valve body 100. When the sensor is a pressure sensor, the pressure sensor is arranged at the outlet of the valve body 100; when the flow rate or pressure in the pipeline exceeds the set value, the flow rate detected by the sensor is greater than the set value, and the sensor sends a signal.

[0050] Working principle: the pull rod 130 moves upward to drive the valve core 110 to open the passage of the valve body 100. At this time, the first compression spring 150 at the upper end of the pull rod 130 is compressed, and the slot 131 is engaged with the block 133 to shorten the pull rod 130 and keep the valve in an open state. When the flow rate of the liquid flowing in the valve body 100 exceeds a certain range, it will trigger the pressure difference between the upper and lower sides of the piston 310, thereby pushing the piston 310 to slide, so that the piston 310 drives the push rod 330 to move, and the movement of the push rod 330 drives the lever 350 to move, so that the block 133 connected to the end of the lever 350 is separated from the slot 131, and the pull rod 130 loses its self-locking effect. Under the push of the first compression spring 150, the valve core 110 moves downward to close the passage of the valve body 100; the passage of the valve body 100 is closed. After closing, the pressure on one side of the piston cylinder 170 is restored, and under the action of the second compression spring 171, the piston 310 is reset; under the elastic force of the reset compression spring 351, the lever 350 is reset; the detected flow data is sent to the terminal through the flow meter 103, and the pipeline circulation situation is remotely understood through the flow data to determine whether to open the valve. If it is opened, the terminal controls the motor 550 to drive the pull rod 130 to move upward, so that the valve core 110 is opened. The mechanical structure is used for triggering protection, which is not affected by the power on and off, and has an absolute protection effect. In conjunction with remote control, the valve is opened and closed, and the software and hardware are combined to achieve good protection and protection effects, reduce labor maintenance costs, improve labor efficiency, avoid damage to the pipeline caused by abnormal flow rate, and eliminate liquid leakage.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A pressure pipeline over-flow protection valve, characterized in that: include: A valve body (100), wherein the valve body (100) is installed with a valve core (110), a pull rod (130) is fixed to the upper end of the valve core (110), a first compression spring (150) for pushing the pull rod (130) to reset is installed at the upper end of the pull rod (130), and the valve body (100) is connected to a piston cylinder (170); A protection component (300), the protection component (300) comprising a piston (310), a push rod (330) and a lever (350), the piston (310) being installed in the piston cylinder (170), the lower end of the push rod (330) being connected to the piston (310), the outer wall of the pull rod (130) being provided with a slot (131), the slot (131) being matched with a block (133) being inserted therein, the block (133) being engaged with one end of the lever (350), the lever (350) being connected with a reset spring (351), a second spring (171) for pushing the piston (310) to reset being installed in the piston cylinder (170), the push rod (330) being raised and lowered to push the lever (350) to rotate around a fulcrum; A reset assembly (500), the reset assembly (500) includes a tooth portion (510) and a rack (530), the tooth portion (510) is a semicircular gear, the rack (530) is fixedly connected to the pull rod (130), the tooth grooves of the tooth portion (510) are correspondingly meshed with the tooth grooves of the rack (530), and the valve body (100) is fixed with a motor (550) for driving the tooth portion (510) to rotate.

2. A pressure pipeline over-flow protection valve according to claim 1, characterized in that: The inlet and outlet at both ends of the valve body (100) are respectively welded with flanges (101); the valve body (100) is installed with a flow meter (103); the flow meter (103) is installed between the water outlet of the valve body (100) and the valve core (110); a sealing ring (111) is provided in a groove opened on the outer surface of the valve core (110); and a filter cartridge (109) is installed at the water inlet of the valve body (100).

3. A pressure pipeline over-flow protection valve according to claim 2, characterized in that: A slider (173) is provided in the piston cylinder (170), the upper end of the slider (173) is fixed to the piston (310), the lower end of the slider (173) is fixed to a connecting rod (175), the lower end of the connecting rod (175) is fixed to a wing plate (177), and the wing plate (177) is provided in the guide channel of the valve body (100).

4. A pressure pipeline over-flow protection valve according to claim 2, characterized in that: A hinge seat (105) is fixed to the upper end of the piston cylinder (170); the lever (350) is hinged to the hinge seat (105) at a fulcrum; the return spring (351) is arranged at an end away from the block (133); the lever (350) is connected to the upper end of the return spring (351); and the lower end of the return spring (351) is fixedly connected to the upper end of the piston cylinder (170).

5. A pressure pipeline over-flow protection valve according to claim 4, characterized in that: An open groove (331) is provided at the upper end of the push rod (330), and the lever (350) passes through the open groove (331). The open groove (331) is arranged between the return compression spring (351) and the hinge seat (105). A stud (333) is threadedly connected to the top of the open groove (331), and the lower end of the stud (333) is arranged corresponding to the lever (350).

6. A pressure pipeline over-flow protection valve according to claim 2, characterized in that: A protective cover (190) is fixed to the outside of the valve body (100), the motor (550) is arranged in the protective cover (190), a rotating shaft (191) is rotatably mounted on the protective cover (190), and the tooth portion (510) is coaxially fixedly connected to the rotating shaft (191).

7. A pressure pipeline over-flow protection valve according to claim 6, characterized in that: The upper end of the pull rod (130) is provided with a compression spring receiving groove, the lower end of the first compression spring (150) is arranged in the compression spring receiving groove, and the upper end of the first compression spring (150) is in contact with the protective cover (190); The upper end of the second compression spring (171) is fixedly connected to the top of the piston cylinder (170), and the lower end of the second compression spring (171) is fixedly connected to the piston (310).

8. A pressure pipeline over-flow protection valve according to claim 7, characterized in that: A worm wheel (193) is coaxially fixed to the rotating shaft (191), a worm (551) is coaxially fixed to the driving shaft of the motor (550), and the worm (551) is meshed with the worm wheel (193).

9. The pressure pipeline over-flow protection valve according to claim 2, characterized in that: The valve body (100) is fixed with a support column (107), a sliding hole is provided on the surface of the support column (107), and the clamping block (133) slides through the sliding hole.

10. The pressure pipeline over-flow protection valve according to claim 8, characterized in that: A sensor is arranged in the valve body (100), and a controller and a communication module are installed in the protective cover (190), wherein the communication module comprises a signal transmitter and a signal receiver; the sensor detects the fluid in the pipeline in real time, and sends monitoring information to the terminal system through the communication module.

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