Pipeline protection structure

Abstract

The utility model relates to a pipeline protection structure which comprises a tee joint, a sliding outer cylinder, a balance plate and a one-way ventilation assembly, and the sliding outer cylinder is installed on a branch pipe of the tee joint; the balance plate is mounted in the sliding outer cylinder, and vent holes are formed in the balance plate; the one-way ventilation assembly comprises a center rotating seat and a turning plate, the center rotating seat is installed in the ventilation hole, and the turning plate is connected with the center rotating seat in a hinged mode. The tee joint is installed on the upstream of a large-fall pipeline, the sliding outer cylinder is connected with a branch pipe of the tee joint, when pressure changes occur at the position of the pipeline communicated with the tee joint, the internal pressure of the sliding outer cylinder changes along with the change, and when the interior of the pipeline is instantly vacuumized, negative pressure is generated in the tee joint, so that the turning plate is opened, and the balance plate can rapidly supplement air through the vent holes; the internal and external pressure difference of the pipeline is effectively adjusted, the pressure borne by the pipeline is reduced, the pipeline is prevented from being damaged, negative influences caused by the water hammer effect are eliminated, and it is guaranteed that a pipeline system can stably run.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline accessories, in particular to a pipeline protection structure. Background Art

[0002] In fluid transmission systems, particularly water supply networks and industrial fluid management systems, water hammer is a well-known and must-manage technical challenge. When fluid flows smoothly through a pipeline, any sudden change, such as the opening or closing of a valve, can cause a transient pressure wave within the fluid, known as water hammer. This phenomenon is categorized into two types: positive water hammer, where a valve closing causes a sharp drop in fluid velocity, generating a high-pressure pulse in the pipeline; and negative water hammer, where a valve opening rapidly causes a sudden drop in fluid pressure. In either case, if not properly controlled, physical damage to the pipeline system can occur, including but not limited to pipe rupture and collapse, as well as damage to connecting components such as valves and fittings.

[0003] To mitigate the impact of water hammer on piping systems, existing technologies have adopted various measures, such as installing air chambers or water hammer arresters. These devices can quickly replenish air or water when water flow is interrupted, thereby relieving vacuum pressure and protecting the pipes from damage. However, existing water hammer arresters are bulky, complex, costly, and inconvenient to install. Utility Model Content

[0004] The utility model provides a pipeline protection structure, which is used to solve the technical problem of complex structure of existing pipeline protection structures.

[0005] The utility model provides a pipeline protection structure, comprising:

[0006] A tee, which is used to be installed on a pipeline;

[0007] A sliding outer cylinder, the sliding outer cylinder being mounted on the branch pipe of the tee;

[0008] a balancing plate, the balancing plate being installed inside the sliding outer cylinder and having a vent hole;

[0009] A one-way ventilation component comprises a central rotating seat and a flap, wherein the central rotating seat is installed in the ventilation hole, the flap is hingedly connected to the central rotating seat, and the flap is operable to block the ventilation hole.

[0010] In one embodiment, a step is provided on the end surface of the balancing plate facing the tee, and the flap is located in the step when in a closed state.

[0011] In one embodiment, a slot is provided on the balance plate, an elastic member is provided in the slot, and two ends of the elastic member are fixedly connected to the flap and the bottom of the slot respectively.

[0012] In one embodiment, the elastic member is a spring or an elastic cord.

[0013] In one embodiment, a sealing ring gasket is provided on the end surface of the balancing plate, and the flap is operably covered on the sealing ring gasket.

[0014] In one embodiment, the balancing plate is slidably disposed inside the sliding outer cylinder, a buffer spring is fixedly connected between the balancing plate and the inner wall of the upper end of the sliding outer cylinder, and a sealing ring is provided on the outer ring of the balancing plate.

[0015] In one embodiment, the device further includes an alarm and a power supply, wherein the alarm and the power supply are connected to form a series circuit. A positioning contact is provided on the inner wall of the sliding outer cylinder, and a power contact is provided on the side of the balance board. The power contact and the positioning contact are arranged in the series circuit, and the power contact is operably in contact with the positioning contact.

[0016] In one embodiment, a dust cover is provided above the sliding outer cylinder, a suspended support arm is fixedly provided between the dust cover and the upper outer wall of the sliding outer cylinder, and the alarm and the power supply are mounted on the dust cover.

[0017] In one embodiment, a guide rod is fixedly provided on the end surface of the balance plate, and the guide rod is arranged parallel to the axis of the sliding outer cylinder. A guide groove is provided at the upper end of the sliding outer cylinder, and the guide rod is operably slidable in the guide groove.

[0018] In one embodiment, there are multiple guide rods that are evenly distributed around the axis of the sliding outer cylinder, and the buffer spring is located inside the space surrounded by the guide rods.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. Install the tee upstream of the large drop pipe, and connect the sliding outer tube to the branch pipe of the tee. When the pressure at the position of the pipe connected to the tee changes, the pressure inside the sliding outer tube changes accordingly. When the inside of the pipe is instantly evacuated into a vacuum, negative pressure is generated in the tee, causing the flap to open. The balance plate can quickly replenish air through the vent hole, effectively adjusting the pressure difference between the inside and outside of the pipe, reducing the pressure on the pipe, avoiding damage to the pipe, and thus eliminating the negative impact of the water hammer effect, ensuring the smooth operation of the pipe system.

[0021] 2. When pressure changes occur inside the pipeline, the balance plate is subjected to thrust or suction, and then the balance plate moves up or down in the sliding outer cylinder. During the movement of the balance plate, the electrical contacts come into contact with the positioning contacts, and the series circuit formed by the alarm and the power supply is turned on. The alarm emits sound and light alarms to remind staff to check in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0023] Figure 1 It is a side sectional view of the pipeline protection structure of the present application;

[0024] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0025] Figure 3 This is a schematic diagram of the installation of the guide rod in the sliding outer cylinder in this application.

[0026] Reference numerals:

[0027] 1- tee; 2- sliding outer cylinder; 3- balance plate; 4- vent; 5- flap; 6- slot; 7- elastic element; 8- sealing ring; 9- buffer spring; 10- dust cover; 11- suspended support arm; 12- center swivel seat; 13- sealing ring gasket; 14- alarm; 15- positioning contact; 16- electrical contact; 17- step; 18- guide rod; 19- guide groove. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1 、 Figure 2 As shown, the utility model provides a pipeline protection structure, including a tee 1, a sliding outer cylinder 2, a balance plate 3 and a one-way ventilation component. The tee 1 is installed upstream of a large drop pipeline, the sliding outer cylinder 2 is connected to the branch pipe of the tee 1, and a balance plate 3 is installed in the sliding outer cylinder 2. A vent 4 is opened on the balance plate 3, a center swivel seat 12 is installed in the vent 4, and a flap 55 is hinged to the center swivel seat 12. When the pressure at the position of the pipeline connected to the tee 1 changes, the internal pressure of the sliding outer cylinder 2 changes accordingly. When the inside of the pipeline is instantly evacuated to a vacuum, negative pressure is generated in the tee 1, causing the flap 55 to open. The balance plate 3 can quickly replenish air through the vent 4, effectively adjusting the pressure difference between the inside and outside of the pipeline, reducing the pressure on the pipeline, avoiding damage to the pipeline, thereby eliminating the negative impact of the water hammer effect, and ensuring that the pipeline system can operate smoothly. When the pressure inside and outside the pipeline is balanced, the flap 55 is closed to seal the vent 4.

[0030] Optionally, the branch pipes of the tee 1, the balancing plate 3, and the flap 5 can also be set to be square.

[0031] Preferably, a step 17 is provided on the end face of the balance plate 3 facing the tee 1, and the flap 55 is located in the step 17 when in the closed state, which greatly improves the sealing performance of the one-way ventilation component and ensures that the water flow will not flow in the reverse direction under normal working conditions; the flap 55 is embedded in the step 17 in the closed state, and the step 17 provides stable support for the flap 55, making the flap 55 more stable during the opening and closing process.

[0032] Furthermore, a slot 6 is provided on the balance plate 3, and an elastic element 7 is installed in the slot 6 and in the slot 6. The two ends of the elastic element 7 are fixedly connected to the flap 55 and the bottom of the slot 6 respectively. The elastic element 7 can be a spring or elastic rope or similar elastic material. Such a design enables the flap 55 to automatically reset under the action of the elastic element 7. When the negative pressure in the pipeline is less than the tension of the elastic element 7, the elastic element 7 pulls the flap 55 so that the flap 55 is embedded in the step 17. Since the elastic element 7 is also provided in the step 17, the elastic element 7 is shielded and hidden when the flap 55 is closed, thereby preventing the elastic element 7 from affecting the normal liquid flow in the pipeline, ensuring that the one-way ventilation component can be opened and closed accurately, and thus better regulating the pressure changes in the pipeline.

[0033] Of course, it is also possible to install a torsion spring on the hinge shaft of the flap 55 and the center swivel seat 12, and connect the two ends of the torsion spring to the flap 55 and the center swivel seat 12 respectively. When the flap 55 is opened, the torsion spring twists. When the flap 55 loses its thrust, the torsion spring resets and closes the flap 55.

[0034] Furthermore, a sealing ring gasket 13 is provided on the end face of the balance plate 3. During the closing process of the flap 55, the flap 55 can be operably covered on the sealing ring gasket 13, thereby achieving a seal between the flap 55 and the vent 4. When the liquid flows normally in the pipeline, the liquid pressure in the pipeline presses the flap 55 on the sealing ring gasket 13 to prevent liquid leakage.

[0035] More preferably, the balancing plate 3 is slidably disposed within the sliding outer cylinder 2, and the balancing plate 3 and the inner wall of the upper end of the sliding outer cylinder 2 are connected via a buffer spring 9. A sealing ring 8 is provided on the outer ring of the balancing plate 3, so that the balancing plate 3 is slidably and sealedly disposed within the sliding outer cylinder 2. When the water flow suddenly stops or starts, negative pressure is generated within the pipeline, allowing the balancing plate 3 to move up and down within the sliding outer cylinder 2. The buffer spring 9 acts as a buffer, helping the balancing plate 3 to move smoothly, thereby reducing the impact on the pipeline system and effectively absorbing and mitigating the impact force caused by the water hammer effect. The provision of the sealing ring 8 ensures the sealing of the balancing plate 3 during sliding, preventing water leakage between the balancing plate 3 and the sliding outer cylinder 2 during normal use. Furthermore, when the balancing plate 3 moves, friction between the sealing ring 8 and the inner wall of the sliding outer cylinder 2 dissipates energy, thereby improving the buffering effect.

[0036] A dust cover 10 is provided above the sliding outer cylinder 2, and the dust cover 10 is fixed to the outer wall of the upper end of the sliding outer cylinder 2 through a suspended support arm 11, which can prevent dust from entering the sliding outer cylinder 2 while ensuring air circulation. An alarm 14 and a power supply are installed on the dust cover 10. Of course, the alarm 14 and the power supply can also be installed at other locations outside. The alarm 14 and the power supply are connected to form a series circuit. A positioning contact 15 is provided on the inner wall of the sliding outer cylinder 2, and an electrical contact 16 is provided on the side of the balance plate 3. The electrical contact 16 is driven up and down by the balance plate 3 to make the electrical contact 16 is operably in contact with the positioning contact 15, so that the positioning contact 15 provided on the inner wall of the sliding outer cylinder 2 and the power contact 16 on the side of the balance plate 3 realize the closing or opening of the series circuit. When the water hammer effect causes the balance plate 3 to move inside the sliding outer cylinder 2, if the power contact 16 on the balance plate 3 contacts the positioning contact 15 on the inner wall of the sliding outer cylinder 2, the circuit will be closed, triggering the alarm 14 to emit an audible and visual alarm signal, reminding the staff to check in time; the dust cover 10 isolates the alarm 14 and the power supply from the pipeline to prevent moisture from affecting the alarm 14 and the power supply.

[0037] Preferably, Figure 3 As shown, a guide rod 18 is fixedly mounted on the end surface of the balance plate 3, parallel to the axis of the sliding outer cylinder 2. A guide groove 19 is also provided at the upper end of the sliding outer cylinder 2. Since the sliding outer cylinder 2 is fixedly connected to the tee 1, when the balance plate 3 drives the guide rod 18 to move up and down, the guide rod 18 slides in the guide groove 19, ensuring smooth linear motion of the balance plate 3 and preventing deviation of the balance plate 3 during movement. Specifically, the guide groove 19 can be open, with the notch of the guide groove 19 facing the center of the sliding outer cylinder 2; or the guide groove 19 can be closed, with the guide rod 18 inserted into the closed guide groove 19 and sliding therein.

[0038] Furthermore, multiple guide rods 18 are provided and evenly distributed around the axis of the sliding outer cylinder 2. The buffer spring 9 is located within the space enclosed by these guide rods 18. When the balance plate 3 moves due to the water hammer effect, the guide rods 18 slide along the guide grooves 19, compressing or stretching the buffer spring 9. The buffer spring 9 is restrained by the guide rods 18, preventing it from deflecting laterally.

[0039] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A pipeline protection structure, characterized in that: include: A tee, which is used to be installed on a pipeline; A sliding outer cylinder, the sliding outer cylinder being mounted on the branch pipe of the tee; a balancing plate, the balancing plate being installed inside the sliding outer cylinder and having a vent hole; A one-way ventilation component comprises a central rotating seat and a flap, wherein the central rotating seat is installed in the ventilation hole, the flap is hingedly connected to the central rotating seat, and the flap is operable to block the ventilation hole.

2. The pipeline protection structure according to claim 1, characterized in that: The end surface of the balancing plate facing the tee is provided with a step, and the flap is located in the step when in a closed state.

3. The pipeline protection structure according to claim 2, characterized in that: A slot is provided on the step, an elastic member is provided in the slot, and two ends of the elastic member are fixedly connected to the flap and the bottom of the slot respectively.

4. The pipeline protection structure according to claim 3, characterized in that: The elastic member is a spring or an elastic rope.

5. The pipeline protection structure according to claim 1, characterized in that: The end surface of the balancing plate is provided with a sealing ring gasket, and the flap is operably covered on the sealing ring gasket.

6. The pipeline protection structure according to claim 1, characterized in that: The balancing plate is slidably arranged inside the sliding outer cylinder. A buffer spring is fixedly connected between the balancing plate and the inner wall of the upper end of the sliding outer cylinder. A sealing ring is arranged on the outer ring of the balancing plate.

7. The pipeline protection structure according to claim 6, characterized in that: The device further includes an alarm and a power supply, wherein the alarm and the power supply are connected to form a series circuit. A positioning contact is provided on the inner wall of the sliding outer cylinder, and a power contact is provided on the side of the balance board. The power contact and the positioning contact are arranged in the series circuit, and the power contact is operable to contact the positioning contact.

8. The pipeline protection structure according to claim 7, characterized in that: A dust cover is provided above the sliding outer cylinder, a suspended support arm is fixedly provided between the dust cover and the outer wall of the upper end of the sliding outer cylinder, and the alarm and the power supply are installed on the dust cover.

9. The pipeline protection structure according to claim 6, characterized in that: A guide rod is fixedly provided on the end surface of the balance plate. The guide rod is arranged parallel to the axis of the sliding outer cylinder. A guide groove is provided on the upper end of the sliding outer cylinder. The guide rod is operable to slide in the guide groove.

10. The pipeline protection structure according to claim 9, characterized in that: There are multiple guide rods that are evenly distributed around the axis of the sliding outer cylinder, and the buffer spring is located inside the space surrounded by the guide rods.

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