Waterproof hammer valve and pipeline system
The dual-piston mechanism in water hammer arrestors rapidly absorbs and dissipates water hammer forces through a secondary spring-assisted expansion, minimizing oscillation and protecting pipe components.
Patent Information
- Application Number
- CN202422249526.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The existing waterproof hammer valves have repeated oscillations when absorbing and releasing the water hammer force, resulting in damage to the pipeline and connecting components, and the water hammer force is eliminated for a long time.
A second elastic member is added to the waterproof hammer valve. Through the design of the upper and lower chambers of the piston and the coordination of multiple elastic members, the rapid release and stable absorption of the water hammer force is achieved, and the reverse oscillation is reduced.
Effectively shorten the time of eliminating water hammer force, protect pipelines and connecting components, improve absorption effect, and reduce reverse oscillation frequency.
Smart Images
Figure CN223105458U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline systems, in particular to a water hammer-proof valve and a pipeline system. Background Art
[0002] In a pipeline system, when the opening and closing time of components in the pipeline system is too fast or pressure shock waves appear elsewhere in the pipeline, water hammer force is likely to be generated in the pipeline, damaging the pipeline and various components connected to the pipeline, and reducing the service life of the pipeline system. Among them, the water hammer force specifically refers to: due to reasons such as sudden opening or closing of components in the pipeline system such as valves, water heaters, water purifiers, intelligent toilets, etc., or sudden stop of water pumps, the flow velocity of the water in the pipeline suddenly changes, and at the same time, a large-amplitude fluctuation of the pressure occurs, forming a water flow shock wave, which is similar to the knocking force of a hammer.
[0003] Therefore, it is necessary to connect a water hammer-proof valve in each pipeline to eliminate the water hammer force in the pipeline through the water hammer-proof valve; the current water hammer-proof valves are roughly divided into piston type and diaphragm type. The piston type uses a piston as a conductor and a spring as a carrier for absorbing water hammer force; the diaphragm type uses a rubber diaphragm as a conductor and a sealed high-pressure inert gas as a carrier for absorbing water hammer force, and the structures of both are very simple.
[0004] In an actual pipeline system, in order to quickly unload the water hammer force, when the water hammer-proof valve absorbs the water hammer force, the displacement of the piston or diaphragm should be instantaneously expanded, that is, it is necessary to quickly increase the volume of the cavity in the water hammer-proof valve for containing water; however, in the water hammer-proof valves of the above two structures, since there is only a carrier for absorbing water hammer force in a single direction, the absorption force of the water hammer force increases as the displacement of the piston or diaphragm increases, that is, the absorption force and the displacement are in a positive correlation proportional relationship, as Figure 1 shown, it is impossible to quickly release the water hammer force; moreover, when the water hammer force is absorbed by the spring or high-pressure inert gas and the water hammer force decreases, the spring or high-pressure inert gas will release part of the previously absorbed water hammer force, driving the piston or diaphragm in the reverse direction to form a reverse pressure, and the formed reverse pressure will generate a new water hammer force, causing the two actions of absorption and release of the reverse action to oscillate back and forth until the water hammer force disappears, as Figure 2 shown, such repeated oscillations also form a certain degree of destructive force, damaging the pipeline and various components connected to the pipeline, and at the same time prolonging the time for eliminating the water hammer force; resulting in poor elimination effect of the water hammer force by the water hammer-proof valves of the above two structures.
[0005] In view of the above problems, there is an urgent need for a water hammer-proof valve and a pipeline system to solve the above problems. Summary of the Utility Model
[0006] The purpose of the present utility model is to provide a water hammer prevention valve and a pipeline system, which can quickly release the water hammer force, are not easily damaged during the repeated oscillation of the water hammer force, and can shorten the elimination time of the water hammer force, so as to achieve a better elimination effect on the water hammer force.
[0007] To achieve this purpose, the present utility model adopts the following technical solutions:
[0008] The water hammer prevention valve includes:
[0009] A valve body, on which a water inlet is provided;
[0010] A piston, which is sealed and slidably arranged along the Z-axis in the valve body. A first chamber and a second chamber are respectively formed between the opposite upper end and lower end of the piston and the valve body. The second chamber is communicated with the water inlet;
[0011] A first elastic member, which is arranged in the first chamber along the up and down direction. The first end of the first elastic member abuts against the valve body, and the second end is limited to the upper end of the piston;
[0012] A second elastic member, whose first end is located in the second chamber and abuts against the lower end of the piston, and the second end is limited to the valve body; when the water hammer prevention valve is in the initial state, the second elastic member is compressed.
[0013] As an optional solution, the elastic force of the first elastic member is greater than the elastic force of the second elastic member.
[0014] As an optional solution, the valve body includes:
[0015] A base, in which a stepped surface is provided. The stepped surface and the lower end of the piston form the second chamber, and the water inlet is provided on the base. A limiting platform is annularly arranged at the top end of the base. When the water hammer prevention valve is in the initial state, the piston abuts against the limiting platform;
[0016] A valve cover, which is hermetically covered on the base. The inner top surface of the valve cover and the upper end of the piston form the first chamber.
[0017] As an optional solution, the top plate of the valve cover is recessed towards the first chamber, and a strengthening structure is arranged on the top plate.
[0018] As an optional solution, the strengthening structure is in a mesh structure.
[0019] As an optional solution, a first limiting structure is arranged at the upper end of the piston, and the second end of the first elastic member is limited to the first limiting structure.
[0020] As an alternative, a second limiting structure is further provided in the base, and the second end of the second elastic member passes through the stepped surface and is limited by the second limiting structure.
[0021] As an alternative, at least one first sealing member is connected between the piston and the valve cover.
[0022] As an alternative, the valve cover is threadedly connected or inserted onto the base.
[0023] A pipeline system includes a pipeline and a water hammer valve as described above, and the water inlet of the water hammer valve is communicated with the pipeline.
[0024] The beneficial effects of the present utility model are as follows:
[0025] By hermetically arranging a piston in the valve body and sliding it in the vertical direction, a first chamber and a second chamber are respectively formed between the upper end and the lower end of the piston arranged back to back and the valve body. The first elastic member is arranged in the first chamber in the vertical direction, with the first end of the first elastic member abutting against the valve body and the second end of the first elastic member being limited to the upper end of the piston. At the same time, the first end of the second elastic member is located in the second chamber and abuts against the lower end of the piston, and the second end of the second elastic member is limited in the valve body. When it is necessary to eliminate the water hammer force in the pipeline, the liquid in the pipeline flows into the second chamber through the water inlet. At this time, the liquid in the second chamber can directly impact the piston by overcoming the elastic force of the second elastic member, causing the piston to move in a direction away from the second elastic member, so that the volume of the second chamber becomes larger and the first chamber is compressed and its volume becomes smaller, enabling a large amount of the liquid in the pipeline to enter the second chamber, and releasing the water hammer force through the change in the volume of the second chamber.
[0026] The above-mentioned addition of a second elastic member on the basis of the first elastic member can achieve the following beneficial effects:
[0027] 1. When the water hammer valve is in the initial state, the second elastic member is compressed, so that part of the initial elastic force of the first elastic member can be offset by the second elastic member, making the initial elastic force of the first elastic member smaller, enabling the liquid in the second chamber to quickly and easily impact the piston, thereby enabling the volume of the second chamber to increase in a relatively short time and realizing the rapid release and absorption of the water hammer force; 2. When the liquid in the second chamber starts to impact and push the piston, since the driving force of the second elastic member on the piston is superimposed at this time, the moving displacement of the piston in the up and down directions can be instantaneously enlarged at the beginning of contact, and the volume of the second chamber can become larger in a shorter time, further ensuring the rapid release and absorption of the water hammer force; moreover, when the displacement of the piston gradually expands, at this time, since the driving force of the second elastic member on the piston has gradually decreased, the water hammer force becomes the main driving force on the piston, so that the water hammer force is gradually absorbed by the first elastic member until the water hammer force is offset, and then the water hammer force can be unloaded in large quantities instantaneously, and the remaining part of the water hammer force can be gradually and stably absorbed subsequently, ensuring the completeness of the absorption of the water hammer force; 3. After adding the second elastic member, when the water hammer force is reversely released after being absorbed by the first elastic member, at this time, since the second elastic member is compressed by the first elastic member again, part of the rebound force of the first elastic member is absorbed by the second elastic member, reducing the back oscillation frequency during the process of absorbing the water hammer force, being able to absorb the destructive force generated again, so as to better protect the pipeline and various components connected to the pipeline during the process of absorbing the water hammer force, and being able to shorten the elimination time of the water hammer force, and then ensuring a better absorption effect on the water hammer force. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 is a schematic curve diagram of the water hammer force and the displacement of the piston when there is only one spring in the water hammer valve in the prior art;
[0029] Figure 2 is a schematic oscillation curve diagram of the water hammer force and the displacement of the piston when there is only one spring in the water hammer valve in the prior art;
[0030] Figure 3 is a schematic structure diagram of the water hammer valve provided by the present invention Figure 1 ;
[0031] Figure 4 is a schematic structure diagram of the water hammer valve provided by the present invention Figure 2 ;
[0032] Figure 5 is a cross-sectional view of the water hammer valve provided by the present invention;
[0033] Figure 6It is a schematic structural diagram among the first elastic member, the second elastic member (not installed on the base), the piston and the base provided by the present utility model;
[0034] Figure 7 It is a schematic curve diagram of the water hammer force and the displacement of the piston after adding the second elastic member provided by the present utility model ( Figure 7 in which spring 1 is the first elastic member and spring 2 is the second elastic member);
[0035] Figure 8 It is a schematic oscillation curve diagram of the water hammer force and the displacement of the piston after adding the second elastic member provided by the present utility model.
[0036] Explanation of reference numerals:
[0037] 1 - valve body; 11 - base; 111 - water inlet; 112 - step surface; 113 - limiting platform; 114 - second limiting groove; 12 - valve cover; 121 - strengthening structure; 122 - top plate; 13 - first chamber; 14 - second chamber; 15 - first seal; 16 - second seal;
[0038] 2 - piston; 21 - first limiting groove; 22 - upper end; 23 - lower end;
[0039] 3 - first elastic member; 4 - second elastic member. Detailed implementation manners
[0040] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.
[0041] Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features. Throughout the specification, the same reference numerals indicate the same elements.
[0042] To make the technical problems solved by the present utility model, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the present utility model will be further described below with reference to the drawings and through specific implementation manners.
[0043] In this embodiment, a water hammer valve and a pipeline system including the water hammer valve are proposed. The pipeline system further includes a plurality of pipelines and a plurality of components respectively installed on each pipeline. The water hammer valve is arranged on the pipeline and communicated with the pipeline, so as to absorb the water hammer force generated in the liquid in the pipeline through the water hammer valve. The water hammer valve absorbs the water hammer force quickly, can avoid damaging the pipeline and each component during the repeated oscillation of the water hammer force, and has a short absorption time, so as to ensure a good absorption effect on the water hammer force. Among them, the liquid can specifically be water, and the above components can specifically be various valves, water pumps, etc., which are not specifically limited herein.
[0044] Specifically, as Figures 3 to 6 shown, the water hammer valve includes a valve body 1, a piston 2, a first elastic member 3 and a second elastic member 4; wherein, a water inlet 111 is provided on the valve body 1, and the water inlet 111 is communicated with the pipeline so that the liquid in the pipeline flows into the water inlet 111; a piston 2 is hermetically arranged in the valve body 1 and axially slides in the up and down direction. The opposite upper end 22 and lower end 23 of the piston 2 respectively form a first chamber 13 and a second chamber 14 with the valve body 1. The first chamber 13 and the second chamber 14 are not communicated with each other, and the second chamber 14 is communicated with the water inlet 111; the first elastic member 3 is arranged in the first chamber 13 in the up and down direction. The first end of the first elastic member 3 abuts against the inside of the valve body 1, and the second end of the first elastic member 3 is limited to the upper end 22 of the piston 2; the first end of the second elastic member 4 is located in the second chamber 14 and abuts against the lower end 23 of the piston 2, and the second end of the second elastic member 4 is limited to the inside of the valve body 1; when the water hammer valve is in the initial state, the second elastic member 4 is compressed. Among them, the up and down direction is specifically as Figure 5 the direction shown by the arrow Z in
[0045] In comparison with the prior art, the water hammer valve in this embodiment is provided with a second elastic member 4 on the basis of the first elastic member 3; a piston 2 is hermetically arranged in the valve body 1 and slidably arranged in the up-and-down direction, so that the upper end 22 and the lower end 23 of the piston 2 arranged back to back respectively form a first chamber 13 and a second chamber 14 with the valve body 1, and the first elastic member 3 is arranged in the first chamber 13 along the Z axis, the first end of the first elastic member 3 abuts against the inside of the valve body 1, the second end of the first elastic member 3 is limited to the upper end 22 of the piston 2, at the same time, the first end of the second elastic member 4 is located in the second chamber 14 and abuts against the lower end 23 of the piston 2, and the second end of the second elastic member 4 is limited to the inside of the valve body 1; when it is necessary to eliminate the water hammer force in the pipeline, the liquid in the pipeline flows into the second chamber 14 through the water inlet 111. At this time, the liquid in the second chamber 14 can directly impact the piston 2 by overcoming the elastic force of the second elastic member 4, so that the piston 2 moves in the direction away from the second elastic member 4, so that the volume of the second chamber 14 becomes larger, and the first chamber 13 is compressed and the volume becomes smaller, so that a large amount of liquid in the pipeline enters the second chamber 14, so as to release the water hammer force through the change of the volume of the second chamber 14.
[0046] Such as Figure 7 And Figure 8As shown above, by adding the second elastic member 4 on the basis of the first elastic member 3, the following beneficial effects can be obtained: 1. When the water hammer valve is in the initial state, the first elastic member 3 compresses the second elastic member 4, so that a part of the initial elastic force of the first elastic member 3 can be offset by the second elastic member 4, making the initial elastic force of the first elastic member 3 smaller, so that the liquid in the second chamber 14 can quickly and easily impact the piston 2, and thus the volume of the second chamber 14 can become larger in a relatively short time, realizing the rapid release and absorption of the water hammer force; 2. When the liquid in the second chamber 14 starts to impact and push the piston 2, since the driving force of the second elastic member 4 on the piston 2 is superimposed at this time, the moving displacement of the piston 2 in the Z-axis direction can be instantaneously enlarged at the beginning of contact, and the volume of the second chamber 14 can become larger in a shorter time, further ensuring the rapid release and absorption of the water hammer force; and when the displacement of the piston 2 gradually expands, at this time, since the driving force of the second elastic member 4 on the piston 2 has gradually decreased, the water hammer force becomes the main driving force on the piston 2, so that the water hammer force is gradually absorbed by the first elastic member 3 until the water hammer force is offset, and then the water hammer force can be unloaded in large quantities instantaneously, and the remaining part of the water hammer force can be gradually and stably absorbed subsequently, ensuring the completeness of the absorption of the water hammer force; 3. Since the second elastic member 4 is added, when the water hammer force is reversely released after being absorbed by the first elastic member 3, at this time, since the second elastic member 4 will be compressed by the first elastic member 3 again, a part of the rebound force of the first elastic member 3 is absorbed by the second elastic member 4, so that the oscillation frequency during the absorption of the water hammer force is reduced, and the damage force generated again can be absorbed, so as to better protect the pipeline and various components connected to the pipeline during the absorption of the water hammer force, and the elimination time of the water hammer force can be shortened, and then the absorption effect of the water hammer force is ensured to be better.
[0047] The above analyzes are carried out from three different absorption periods before, during, and after the reverse rebound of the absorption of the water hammer force. That is, by adding the second elastic member 4, improvements can be made from three different absorption periods, and the curve between the water hammer force and the displacement of the piston 2 is better optimized to achieve an ideal curve between the water hammer force and the displacement of the piston 2. Furthermore, the absorption effect of the water hammer valve on the water hammer force can be ensured to be better. By Figure 7 and Figure 8 As shown, it can be intuitively obtained that after adding the second elastic member 4, the displacement of the piston 2 increases significantly, and the oscillation frequency of the water hammer force decreases significantly.
[0048] Furthermore, as shown in Figure 5 and Figure 6As shown, the first elastic member 3 and the second elastic member 4 are arranged opposite to each other, and the elastic force of the first elastic member 3 is greater than the elastic force of the second elastic member 4, that is, the first elastic member 3 is used as a main elastic member, mainly for absorbing water hammer force, and the second elastic member 4 is used as an auxiliary pressure relief elastic member, mainly for assisting the first elastic member 3, so that the first elastic member 3 can absorb the water hammer force better and faster. In this embodiment, the first elastic member 3 and the second elastic member 4 can both be springs.
[0049] Specifically, Figures 3 to 6 As shown, the valve body 1 includes a base 11 and a valve cover 12; wherein, a step surface 112 is provided in the base 11, and the step surface 112 and the lower end 23 of the piston 2 form the above-mentioned second chamber 14 between each other, and the water inlet 111 is provided on the base 11; and, a limit platform 113 is provided around the top end of the base 11, and when the anti-water hammer valve is in an initial state, the piston 2 abuts against the limit platform 113 so that the movement of the piston 2 on the Z axis can be limited by the limit platform 113; the valve cover 12 sealing cover is provided on the base 11 to form a complete valve body 1, and the inner top surface of the valve cover 12 and the upper end 22 of the piston 2 form the above-mentioned first chamber 13 between each other.
[0050] Furthermore, if Figure 3 As shown, the top plate 122 of the valve cover 12 is recessed toward the first chamber 13 so as to increase the contact area between the top plate 122 and the heat in the first chamber 13 , thereby ensuring that the heat in the first chamber 13 can be conducted out of the valve cover 12 more quickly through the recessed top plate 122 .
[0051] Specifically, when the water hammer force compresses the piston 2 to reduce the volume of the first chamber 13, the air in the first chamber 13 is also compressed, thereby converting part of the water hammer force into a compression force on the air. The compression effect causes the air temperature in the first chamber 13 to increase, and eventually part of the water hammer force is converted into heat energy and released. Correspondingly, the top plate 122 of the valve cover 12 with an inwardly concave arrangement can quickly conduct the heat generated in the first chamber 13, thereby quickly releasing the water hammer force through the dissipated heat, thereby ensuring a better absorption effect of the water hammer force.
[0052] Specifically, Figure 3 As shown, in order to ensure the structural strength of the concave top plate 122, a reinforcing structure 121 is provided on the top plate 122, so that the structural strength of the top plate 122 can be ensured to be high through the reinforcing structure 121, thereby ensuring that the concave top plate 122 will not be deformed or even damaged during operation.
[0053] Furthermore, if Figure 3As shown, the strengthening structure 121 is specifically in a net structure, that is, the net structure covers the entire top plate 122, so that the structural strength of the top plate 122 can be better ensured through this net structure. Among them, the specific structure of the strengthening structure 121 is not limited and can be determined according to the actual structural strength requirements.
[0054] Further, a first limiting structure is provided at the upper end 22 of the piston 2, and the second end of the first elastic member 3 is limited by the first limiting structure to ensure the position accuracy of the first elastic member 3 in the first chamber 13. Specifically, as Figure 5 and Figure 6 shown, the first limiting structure can specifically be a first limiting groove 21. The first limiting groove 21 communicates with the first chamber 13, and the first limiting groove 21 is recessed in the upper end 22 of the piston 2. The second end of the first elastic member 3 passes through the upper end 22 and is limited in the first limiting groove 21 to ensure the position accuracy of the first elastic member 3 in the first chamber 13; and by using the limiting structure of the first limiting groove 21, the processing can be simple, the limiting method is simple and convenient, and a good limiting effect can be ensured.
[0055] It should be noted that in other embodiments, the first limiting structure can also be a protrusion protruding from the upper end 22 of the piston 2. The protrusion is located in the first chamber 13, so that the second end of the first elastic member 3 is sleeved and limited on the protrusion; in addition, the first limiting structure can also be the top plane of the upper end 22 of the piston 2, and the second end of the first elastic member 3 is bonded to this top plane. Here, the specific structure of the first limiting structure is not limited, as long as the second end of the first elastic member 3 can be limited by the first limiting structure. Further, a second limiting structure is also provided in the base 11. The second end of the second elastic member 4 passes through the step surface 112 and is limited by the second limiting structure to ensure the position accuracy of the second elastic member 4 in the second chamber 14.
[0056] Specifically, as Figure 5 and Figure 6 shown, the second limiting structure can specifically be a second limiting groove 114. The second limiting groove 114 communicates between the second chamber 14 and the water inlet 111. The second end of the second elastic member 4 passes through the step surface 112 and is limited in the second limiting groove 114 to ensure the position accuracy of the second elastic member 4 in the second chamber 14; and by using the limiting structure of the second limiting groove 114, the processing can be simple, the limiting method is simple and convenient, and a good limiting effect can be ensured.
[0057] It is worth noting that, in other embodiments, the second limiting structure can also be a convex seat convexly arranged in the base 11, and the convex seat is respectively connected to the second chamber 14 and the water inlet 111, so that the second end sleeve of the second elastic member 4 is limited on the convex seat; in addition, the first limiting structure can also be a mounting plane arranged in the base 11, and the second end of the second elastic member 4 is bonded to the mounting plane, and the mounting plane can connect the second chamber 14 and the water inlet 111. Here, the specific structure of the second limiting structure is not limited, as long as the second limiting structure can provide a limiting effect on the second end of the second elastic member 4, and ensure that the second limiting structure does not interfere with the flow of the liquid in the water inlet 111 into the second chamber 14.
[0058] Furthermore, if Figure 5 and Figure 6 As shown, at least one first sealing member 15 is connected between the piston 2 and the valve cover 12 to ensure a sealed connection between the piston 2 and the valve cover 12. Two first sealing members 15 are arranged at intervals, and the first sealing members 15 can be specifically an O-ring or a star ring.
[0059] Specifically, the valve cover 12 is threadedly connected or plugged into the base 11, so that the valve cover 12 and the base 11 form an integral structure; and a second sealing member 16 is connected between the valve cover 12 and the base 11 to ensure the sealing effect between the valve cover 12 and the base 11. Among them, there is one second sealing member 16, and the second sealing member 16 can be specifically an O-ring or a star ring, and the valve cover 12 can be plugged into the base 11 through a pin.
[0060] The specific working process of the water hammer valve in this embodiment is as follows:
[0061] Before absorbing the water hammer force, the anti-water hammer valve is in an initial state. At this time, the initial elastic force of the first elastic member 3 is partially offset by the second elastic member 4, so that the initial elastic force of the first elastic member 3 is smaller; and at this time, the piston 2 abuts against the limit platform 113 of the base 11.
[0062] When the water hammer force begins to be absorbed; when the liquid in the pipeline enters the second chamber 14 through the water inlet 111 on the base 11, since the initial elastic force of the first elastic member 3 is relatively small at this time, and the second elastic member 4 exerts a pushing force on the piston 2, the liquid in the second chamber 14 quickly pushes the piston 2 to move away from the second elastic member 4, so that the piston 2 instantly produces a larger movement displacement, so that the volume of the second chamber 14 instantly increases, and the first chamber 13 is compressed and the volume instantly decreases, so that the liquid in the pipeline instantly and in large quantities enters the second chamber 14, so that the water hammer force is quickly released through the change in the volume of the second chamber 14.
[0063] While the piston 2 rapidly reduces the volume of the first chamber 13: As the piston 2 is compressed by the water hammer force, the volume of the first chamber 13 decreases, and at the same time, the air in the first chamber 13 is compressed. As a result, part of the water hammer force is converted into the compression force of the air. Due to the compression effect, the temperature of the air in the first chamber 13 increases, and finally, part of the water hammer force is converted into heat energy and released. The heat in the first chamber 13 is quickly released through the mesh-shaped heat dissipation openings 121 at the top of the valve cover 12 in large quantities, so that the water hammer force can be quickly released through the dissipated heat.
[0064] During the process of continuously absorbing the water hammer force: After the displacement of the piston 2 gradually expands, at this time, since the driving force of the second elastic member 4 on the piston 2 has gradually decreased, the water hammer force becomes the main driving force on the piston 2. As a result, the water hammer force is gradually absorbed by the first elastic member 3 until the water hammer force is completely offset.
[0065] When releasing in the reverse direction after absorbing the water hammer force: Since the second elastic member 4 will be compressed by the first elastic member 3 at this time, part of the rebound force of the first elastic member 3 is absorbed through the second elastic member 4, reducing the back oscillation frequency during the process of absorbing the water hammer force. It can absorb the destructive force generated again, so as to ensure better protection of the pipeline and various components connected to the pipeline during the process of absorbing the water hammer force, and can shorten the elimination time of the water hammer force.
[0066] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. The content of this specification should not be construed as a limitation to the present invention.
Claims
1. Water hammer valve, characterized in that, Comprising: A valve body (1) provided with a water inlet (111) thereon; A piston (2), which is hermetically arranged and slidable along the Z-axis in the valve body (1). The upper end (22) and the lower end (23) of the piston (2) arranged oppositely respectively form a first chamber (13) and a second chamber (14) with the valve body (1), and the second chamber (14) communicates with the water inlet (111); A first elastic member (3) arranged in the first chamber (13) in the up-and-down direction. The first end of the first elastic member (3) abuts against the inside of the valve body (1), and the second end is limited to the upper end (22) of the piston (2); A second elastic member (4), whose first end is located in the second chamber (14) and abuts against the lower end (23) of the piston (2), and the second end is limited to the inside of the valve body (1); when the water hammer valve is in the initial state, the second elastic member (4) is compressed.
2. The water hammer valve according to claim 1, characterized in that, The elastic force of the first elastic member (3) is greater than the elastic force of the second elastic member (4).
3. The water hammer valve according to claim 1, wherein The valve body (1) includes: A base (11) provided with a stepped surface (112) therein. The stepped surface (112) and the lower end (23) of the piston (2) form the second chamber (14), and the water inlet (111) is arranged on the base (11). A limiting platform (113) is annularly arranged at the top end of the base (11). When the water hammer valve is in the initial state, the piston (2) abuts against the limiting platform (113); A valve cover (12) hermetically covered on the base (11). The inner top surface of the valve cover (12) and the upper end (22) of the piston (2) form the first chamber (13).
4. The water hammer valve according to claim 3, characterized in that, The top plate (122) of the valve cover (12) is concave towards the first chamber (13), and a strengthening structure (121) is arranged on the top plate (122).
5. The water hammer valve according to claim 4, characterized in that, The strengthening structure (121) is in a mesh structure.
6. The water hammer valve according to any one of claims 1-5, characterized in that, A first limiting structure is arranged at the upper end (22) of the piston (2), and the second end of the first elastic member (3) is limited to the first limiting structure.
7. The water hammer valve according to any one of claims 3-5, characterized in that, A second limiting structure is further arranged in the base (11), and the second end of the second elastic member (4) passes through the stepped surface (112) and is limited to the second limiting structure.
8. The water hammer valve according to any one of claims 3-5, characterized in that At least one first sealing member (15) is connected between the piston (2) and the valve cover (12).
9. The water hammer valve according to any one of claims 3-5, characterized in that, The valve cover (12) is threadedly connected or inserted onto the base (11).
10. Pipeline system, characterized in that, Comprising a pipeline and the water hammer valve according to any one of claims 1-9, wherein the water inlet (111) of the water hammer valve communicates with the pipeline.