Pressure relief structure for preventing frost crack of water channel body
By introducing elastically retractable piston rods and connected water clearance and drainage gaps into the water channel pressure relief structure, the problem of limited pressure relief range in the prior art is solved, and a stronger pressure relief effect is achieved to prevent freezing and cracking of the water channel. And simplified structural design.
Patent Information
- Application Number
- CN202420979928.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing waterway pressure relief structure cannot effectively relieve pressure under high pressure state, resulting in frozen cracking of the waterway, especially in severe cold areas, with limited pressure relief range and inability to completely release water pressure, resulting in damage to the pipeline.
A pressure relief structure including a waterway body, a piston rod, a plug and an elastic member is designed. Through the design of the expansion and contraction of the piston rod, the water gap and drainage gap, the stronger pressure relief capacity is achieved, and when the water pressure rises, it passes through The piston rod exits the pressure reduction and drains water through the water gap and drains the water gap to provide a more reliable pressure relief effect.
This structure provides stronger pressure relief capability, can effectively reduce the internal pressure of the waterway, prevent freezing and cracking, and maintain sealing during the pressure relief process, avoid blockage, and simplify disassembly and assembly and maintenance.
Smart Images
Figure CN222206590U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline pressure relief, in particular to a pressure relief structure for preventing a waterway body from freezing and cracking. Background Art
[0002] The pressure relief structure in the waterway can prevent the waterway from bursting under high pressure, especially in the north or extremely cold regions. When the water in the waterway freezes, if the waterway is not depressurized or part of the water is discharged, the expanding ice will cause the pressure inside the waterway to rise sharply and freeze the waterway.
[0003] At present, there are many waterway pressure relief structures or products on the market, and many of them are structures that are completely installed inside the waterway. Such structures have the problem of limited pressure relief range. When the water pressure continues to rise and compresses the fully built-in pressure relief structure to the limit, the subsequent water pressure will no longer be able to be released, and it will still cause the pipe to freeze and crack. It can be seen that the existing pressure relief structure needs to be improved. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a pressure relief structure with stronger pressure relief capability.
[0005] A pressure relief structure for preventing a water channel body from freezing and cracking comprises a water channel body, a piston rod, a plug and an elastic member, wherein:
[0006] The water channel body is provided with a water flow channel and a pressure relief channel. One end of the pressure relief channel is connected to the water flow channel through a pressure relief hole, and the other end is an opening connected to the outside world. Water can be drained and pressure reduced through the pressure relief channel.
[0007] The piston rod is telescopically installed in the pressure relief channel, one end of which is a head for opening or blocking the pressure relief hole, and the other end is a tail facing the opening. A water gap is provided between the pressure relief channel between the pressure relief hole and the opening and the piston rod. When the pressure relief hole is opened, the water gap can be connected to the water flow channel through the pressure relief hole.
[0008] The plug blocks the opening, and a drainage gap is provided between the plug and the opening, and the drainage gap is communicated with the water flow gap.
[0009] The elastic member is compressed and arranged between the piston rod and the plug, and pushes the piston rod to block the pressure relief hole through the head.
[0010] The pressure relief structure provided by the utility model is not only provided with an elastically retractable piston rod, but also provided with a connected water-passing gap and a drainage gap. When the water pressure inside the water channel body rises, the pressure can be reduced by withdrawing the piston rod. When the water pressure is too high, after the piston rod is withdrawn and the pressure relief hole is opened, the water and water pressure in the water flow channel can be discharged outside the water-passing gap and the drainage gap, thereby providing a more reliable and wide-range pressure relief effect for the water channel.
[0011] Preferably, in order to coordinate the sealing effect of the piston rod head and the drainage effect between the remaining part and the pressure relief channel, the pressure relief channel forms a constriction at the pressure relief hole, the diameter of the piston rod head is smaller than the diameter of the piston rod body, and the diameter of the piston rod head is equal to the diameter of the pressure relief hole.
[0012] Preferably, a water gap is provided between the main body of the piston rod and the main body of the pressure relief channel.
[0013] Preferably, a water flow groove connected to the main part of the pressure relief channel is provided around the water outlet section of the pressure relief hole, and the water flow groove is connected to the water gap to form the water flow gap.
[0014] Preferably, a sealing ring is sleeved around the periphery of the head to improve the sealing performance of the head in a blocked state and avoid water leakage.
[0015] Preferably, the elastic member is a spring, which has a simple structure and is easy to replace and maintain.
[0016] Preferably, a receiving groove is provided at the tail of the piston rod, and one end of the spring is inserted into the receiving groove to avoid misalignment during use.
[0017] Preferably, the opening is stepped and symmetrically provided with a stopper block. Symmetrical stopper protrusions are provided on the periphery of the end of the plug. After the plug is inserted into the opening and the stopper protrusion passes through the gap between the stopper blocks, the stopper is rotated so that the stopper protrusion is stuck between the bottom of the opening and the stopper block. The assembly structure is simple and easy to assemble and disassemble.
[0018] Preferably, a clearance opening is provided on the periphery of the pressure relief channel, and the clearance opening is located between the limit block and the step of the opening, serving as an exit opening of the mold core forming the limit block.
[0019] Preferably, six deformation grooves are provided at the end of the plug, so as to facilitate the user to disassemble and assemble with a hexagonal wrench.
[0020] Preferably, the inner circle of the opening is provided with a drainage groove, and the drainage groove and the outside of the plug form the drainage gap.
[0021] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:
[0022] The pressure relief structure provided by the utility model is not only provided with an elastically retractable piston rod, but also provided with a connected water-passing gap and a drainage gap. When the water pressure inside the waterway body rises, the pressure can be reduced by withdrawing the piston rod. When the water pressure is too high, after the piston rod withdraws and opens the pressure relief hole, the water and water pressure in the water flow channel can be discharged outside the water-passing gap and the drainage gap, thereby providing a more reliable and wide-range pressure relief effect for the waterway.
[0023] The pressure relief channel forms a constriction at the pressure relief hole, which can coordinate the blocking effect of the piston rod head and the drainage effect between the remaining part and the pressure relief channel, forming a strong sealing effect in the blocking state and not easy to be blocked in the pressure relief state;
[0024] A water groove is provided around the water outlet end of the pressure relief hole. When the pressure is released, the head of the piston rod does not need to be completely withdrawn from the pressure relief hole, which can avoid the situation where the head of the piston rod is stuck and cannot be reset after being completely withdrawn from the pressure relief hole.
[0025] A pressing and rotating limiting structure is adopted between the plug and the pressure relief channel, which is convenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0027] in:
[0028] Figure 1 It is an axial view of a pressure relief structure for preventing the freezing and cracking of the waterway body;
[0029] Figure 2 It is a front view of a pressure relief structure for preventing the freezing and cracking of the waterway body;
[0030] Figure 3 A cross-sectional view of a pressure relief structure that prevents the waterway from freezing and cracking. Figure 1 ;(about Figure 2 AA)
[0031] Figure 4 A cross-sectional view of a pressure relief structure that prevents the waterway from freezing and cracking. Figure 2 ;(about Figure 3 BB)
[0032] Figure 5 A cross-sectional view of a pressure relief structure that prevents the waterway from freezing and cracking. Figure 3 ; (Pressure relief drainage path)
[0033] Figure 6It is a partial enlarged picture of preventing the freezing and cracking of the waterway body; (About Figure 3 C)
[0034] Figure 7 It is an axial view of the piston rod, head, plug and elastic member;
[0035] Figures 1 to 7 The symbols are: water channel body 1, water flow channel 11, pressure relief channel 12, pressure relief hole 121, opening 122, limit block 1221, give way 123, piston rod 2, head 21, plug 3, limit protrusion 31, elastic part 4, water gap 5, water gap 51, water groove 52, drainage gap 6. DETAILED DESCRIPTION
[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.
[0037] See also Figures 1 to 7 A pressure relief structure for preventing a water channel body 1 from freezing and cracking comprises a water channel body 1, a piston rod 2, a plug 3 and an elastic member 4, wherein:
[0038] The water channel body 1 is provided with a water flow channel 11 and a pressure relief channel 12 . One end of the pressure relief channel 12 is connected to the water flow channel 11 through a pressure relief hole 121 , and the other end is an opening 122 connected to the outside. Water can be drained and pressure can be reduced through the pressure relief channel 12 .
[0039] The piston rod 2 is telescopically installed in the pressure relief channel 12, one end of which is a head 21 for opening or blocking the pressure relief hole 121, and the other end is a tail facing the opening 122. The pressure relief channel 12 is provided with a water gap 5 between the portion between the pressure relief hole 121 and the opening 122 and the piston rod 2. When the pressure relief hole 121 is opened, the water gap 5 can be connected to the water flow channel 11 through the pressure relief hole 121.
[0040] The plug 3 blocks the opening 122, and a drainage gap 6 is provided between the plug 3 and the opening 122, and the drainage gap 6 is connected to the water gap 5. In this embodiment, a drainage groove is provided in the inner circle of the opening 122, and the drainage groove and the outside of the plug 3 form the drainage gap 6.
[0041] In one embodiment, the opening 122 is in a step shape, and a symmetrical limit block 1221 is provided inside. Symmetrical limit protrusions 31 are provided on the outer periphery of the end of the plug 3. The plug 3 is inserted into the opening 122. After the limit protrusion 31 passes through the gap between the limit blocks 1221, the limit protrusion 31 is stuck between the bottom of the opening 122 and the limit block 1221 by rotating the plug 3. The assembly structure is simple and easy to disassemble. Preferably, six deformation grooves are provided at the end of the plug 3, which is convenient for the user to disassemble and assemble with a hexagonal wrench. In addition, in order to facilitate molding, a clearance port 123 is provided on the periphery of the pressure relief channel 12. The clearance port 123 is located between the step of the limit block 1221 and the opening 122, and serves as an exit port for the core that forms the limit block 1221.
[0042] The elastic member 4 is compressed and arranged between the piston rod 2 and the plug 3, and pushes the piston rod 2 to block the pressure relief hole 121 through the head 21. In this embodiment, the elastic member 4 is a spring, which has a simple structure and is easy to replace and maintain. Preferably, a receiving groove is provided at the tail of the piston rod 2, and one end of the spring is inserted into the receiving groove to avoid misalignment during use.
[0043] In one embodiment, in order to coordinate the blocking effect of the head 21 of the piston rod 2 and the drainage effect between the remaining part and the pressure relief channel 12, the pressure relief channel 12 forms a constriction at the pressure relief hole 121, the diameter of the head 21 of the piston rod 2 is smaller than the diameter of the main part of the piston rod 2, and the diameter of the head 21 of the piston rod 2 is equal to the diameter of the pressure relief hole 121. In addition, there is a water gap 51 between the main part of the piston rod 2 and the main part of the pressure relief channel 12. The water outlet section of the pressure relief hole 121 is provided with a water groove 52 connected to the main part of the pressure relief channel 12, and the water groove 52 is connected to the water gap 51 to form the water gap 5.
[0044] On the basis of the above embodiment, in another embodiment, a sealing ring is sleeved around the periphery of the head 21 to improve the sealing performance of the head 21 in a blocked state and avoid water leakage.
[0045] The pressure relief structure provided by the utility model is not only provided with an elastically retractable piston rod 2, but also provided with a connected water gap 5 and a drainage gap 6. When the water pressure inside the water channel body 1 rises, the pressure can be reduced by withdrawing the piston rod 2. When the water pressure is too high, after the piston rod 2 withdraws and opens the pressure relief hole 121, the water and water pressure in the water flow channel 11 can be discharged outside through the water gap 5 and the drainage gap 6, thereby providing a more reliable and wide-range pressure relief effect for the water channel.
[0046] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.
Claims
1. A pressure relief structure to prevent the waterway body from freezing and cracking. It is characterized in that It includes a water channel body, a piston rod, a plug and an elastic member; The water channel body is provided with a water flow channel and a pressure relief channel, one end of the pressure relief channel is connected to the water flow channel through a pressure relief hole, and the other end is an opening connected to the outside world; The piston rod is telescopically installed in the pressure relief channel, one end of which is the head, opening or blocking the pressure relief hole, and the other end is the tail, facing the opening; a water gap is provided between the pressure relief channel between the pressure relief hole and the opening and the piston rod; The plug blocks the opening, and a drainage gap is provided between the plug and the opening, and the drainage gap is connected to the water flow gap; The elastic member is compressed and arranged between the piston rod and the plug, and pushes the piston rod to block the pressure relief hole through the head.
2. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 1, It is characterized in that The pressure relief channel forms a constriction at the pressure relief hole, the diameter of the head of the piston rod is smaller than the diameter of the main part of the piston rod, and the diameter of the head of the piston rod is equal to the diameter of the pressure relief hole.
3. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 2, It is characterized in that A water gap is provided between the main body of the piston rod and the main body of the pressure relief channel.
4. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 3, It is characterized in that A water-passing groove communicating with the main part of the pressure relief channel is arranged around the water outlet section of the pressure relief hole, and the water-passing groove is connected to the water-passing gap to form the water-passing gap.
5. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 2, It is characterized in that A sealing ring is sleeved on the periphery of the head.
6. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 1, It is characterized in that The elastic member is a spring, and a receiving groove is provided at the tail of the piston rod, and one end of the spring is inserted into the receiving groove.
7. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 1, Features The opening is step-shaped and has symmetrical limit blocks inside; the outer periphery of the end of the plug is provided with symmetrical limit protrusions. After the plug is inserted into the opening and the limit protrusions pass through the gaps between the limit blocks, the plug is rotated so that the limit protrusions are stuck between the bottom of the opening and the limit blocks.
8. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 7, It is characterized in that A clearance opening is arranged on the periphery of the pressure relief channel, and the clearance opening is located between the limiting block and the step of the opening.
9. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 7, It is characterized in that The end of the plug is provided with six deformation grooves.
10. A pressure relief structure for preventing a waterway body from freezing and cracking according to claim 1 or 7, It is characterized in that The inner circle of the opening is provided with a drainage groove, and the drainage groove and the outside of the plug form the drainage gap.