Filtering pressure reducing valve
By designing a filter pressure reducing valve and using pressure elastic components to close the vent holes under high pressure and open the vent holes under normal pressure, the pressure reduction problem during the synthesis gas transportation process is solved, and the safe transportation of hydrogen and equipment protection are achieved.
Patent Information
- Application Number
- CN202422365956.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When preparing hydrogen, the synthesis gas needs to be filtered and purified and transported to the terminal gas storage equipment through a gas pipeline. The gas needs to be depressurized to prevent damage to the equipment, but the existing technology has failed to effectively solve the problem of gas pressure regulation.
A filter pressure reducing valve is designed, which includes a valve body, an air outlet chamber and a pressure regulating chamber. The air vent is closed under high pressure by a pressure elastic component assembly and opened under normal pressure to achieve the gas pressure reduction function. The cyclic pressure reduction of the gas is achieved by the cooperation of the elastic pressure regulating plate and the return spring.
It achieves safe decompression of hydrogen, prevents equipment damage, ensures safe operation of the transmission pipeline, and realizes stable gas transportation through automatic pressure adjustment.
Smart Images
Figure CN223360013U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a pressure reducing valve, in particular to a filtering pressure reducing valve. Background Art
[0002] Raw materials such as coal, natural gas and methanol react under a catalyst and at a specific temperature to produce synthesis gas of hydrogen and other gases (such as carbon monoxide or carbon dioxide). Therefore, when preparing hydrogen, the synthesis gas needs to be filtered and purified, and the purified hydrogen is transported to the terminal gas storage equipment through a gas pipeline. During the transportation process, the gas in the pipeline needs to be depressurized to prevent excessive gas pressure from causing damage to the equipment or abnormalities. Therefore, a pressure reducing valve that can regulate the pressure of the purified hydrogen is needed to ensure the safe operation of the transmission pipeline. Utility Model Content
[0003] In view of this, the utility model provides a filter pressure reducing valve to solve the above technical problems.
[0004] The technical solution of the present utility model is achieved as follows:
[0005] and a tube connecting the dischar e side of the pump with a plug in the forward end of the crank case, said tube having a check valve in it at the pump end, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug, and said former tube which connects the pump to the oil drain plug
[0006] Preferably, the pressure elastic component includes an elastic pressure regulating plate and a reset spring. The outer side of the elastic pressure regulating plate is fixedly connected to the inner wall of the air outlet bin. The top of the elastic pressure regulating plate is connected to the top of the air outlet bin through the reset spring. A guide hole is provided in the center of the fixed plate. A sliding rod is slidably connected in the guide hole. The bottom of the elastic pressure regulating plate is connected to the shielding plate through the sliding rod.
[0007] Preferably, a guide component is further provided between the elastic pressure regulating plate and the top of the air outlet bin, and the guide component includes a guide rod and a guide cylinder. The guide cylinder is arranged on the top wall of the air outlet bin, and the guide rod is arranged on the top of the elastic pressure regulating plate. The guide rod is slidably passed through the guide cylinder, and the reset spring is sleeved on the outside of the guide cylinder.
[0008] Preferably, the number of the ventilation holes is three, and the ventilation holes are evenly arranged on the fixing plate.
[0009] Preferably, the shielding piece is in the shape of a petal with three petals, the positions of the petals correspond one-to-one to the positions of the air holes, and the cross-sections of the sliding rod and the guide hole are both rectangular.
[0010] Preferably, a limiting ring is further provided inside the connecting tube, and the shielding piece abuts against the top of the limiting ring under normal pressure.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] After the air has been purged from the air filter, the vent will be forced to vent, and after the vent has been purged, the vent will be forced to vent, and ... BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0014] Figure 1 This is a schematic diagram of the structure of the utility model under normal pressure environment;
[0015] Figure 2 This is a schematic diagram of the structure of the utility model under high pressure environment;
[0016] Figure 3 This is a schematic diagram of the internal structure of the connecting tube of the utility model;
[0017] Figure 4 This is a schematic diagram of the internal structure of the guide component of the utility model;
[0018] Figure 5 This is an exploded view of the connecting tube of the utility model;
[0019] Figure 6 This is a structural diagram of the elastic pressure regulating plate of the utility model.
[0020] In the figure, 1. valve body; 2. air inlet; 3. air outlet; 4. air outlet chamber; 5. pressure regulating chamber; 6. partition; 7. connecting tube; 8. fixing plate; 9. air vent; 10. shielding plate; 11. elastic pressure regulating plate; 12. return spring; 13. sliding rod; 14. guide rod; 15. guide tube; 16. limit ring. DETAILED DESCRIPTION
[0021] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.
[0022] See also Figures 1 to 6 The utility model provides a filter pressure reducing valve, including a valve body 1, an air inlet 2 is provided on the front side of the valve body 1, an air outlet 3 is provided on the rear side of the valve body 1, an upper air outlet bin 4 and a lower pressure regulating bin 5 are provided inside the valve body 1, the air outlet bin 4 and the pressure regulating bin 5 are sealed by a partition 6, the air inlet 2 is communicated with the pressure regulating bin 5, the air outlet 3 is communicated with the air outlet bin 4, a connecting tube 7 for connecting the air outlet bin 4 and the pressure regulating bin 5 is passed through the center of the partition 6, and the top of the connecting tube 7 is sealed with a fixed Plate 8, the fixed plate 8 is provided with a plurality of air holes 9 along the circumferential direction, and a shielding piece 10 for blocking the air holes 9 is provided under the fixed plate 8, and the size of the shielding piece 10 is smaller than the inner diameter of the connecting tube 7, and a pressure elastic component assembly is provided on the upper part of the air outlet bin 4, and the pressure elastic component assembly is connected to the shielding piece 10, under a high-pressure environment, the pressure elastic component assembly drives the shielding piece 10 to rise and seal the air holes 9, and under a normal-pressure environment, the pressure elastic component assembly drives the shielding piece 10 to descend and open the air holes 9.
[0023] The filtered hydrogen enters the pressure regulating chamber 5 through the air inlet 2 of the valve body 1. Under normal conditions, the pressure elastic component maintains balance, the shielding piece 10 is located below the fixed plate 8, and the air vent 9 is in an open state. The hydrogen enters the connecting tube 7 from the pressure regulating chamber 5, passes through the shielding piece 10 and the air vent 9 in turn, and comes to the air outlet chamber 4, and is finally transported outward through the air outlet 3. When the air inlet pressure is too high, the high-pressure gas will fill the entire pressure regulating chamber 5 and the air outlet chamber 4. As the pressure continues to increase, the pressure elastic component maintains balance. The component assembly drives the shielding piece 10 to rise until the shielding piece 10 abuts against the bottom of the fixed plate 8. The shielding piece 10 seals the air vent 9, blocking the air inlet channel of the air outlet bin 4. The gas in the air outlet bin 4 is slowly transported outward through the air outlet 3 until the pressure in the air outlet bin 4 drops to normal pressure, completing the decompression work; at this time, the pressure elastic component assembly is reset, driving the shielding piece 10 to descend, reopening the air vent 9, and the gas re-enters the air outlet bin 4 from the pressure regulating bin 5, and the cycle is repeated to achieve the decompression function of the gas.
[0024] The pressure elastic component includes an elastic pressure regulating piece 11 and a reset spring 12 made of rubber material. The outer side of the elastic pressure regulating piece 11 is fixedly connected to the inner wall of the air outlet bin 4. The top of the elastic pressure regulating piece 11 is connected to the top of the air outlet bin 4 through the reset spring 12. A guide hole is provided in the center of the fixed plate 8. A slide rod 13 is slidably connected in the guide hole. The bottom of the elastic pressure regulating piece 11 is connected to the shielding piece 10 through the slide rod 13.
[0025] The elastic pressure regulating plate 11 is in a horizontal and balanced state at normal pressure. When the internal pressure of the air outlet bin 4 is too high, the air pressure will push the center of the elastic pressure regulating plate 11 to bulge upward in a convex shape, and the reset spring 12 will be squeezed, and the elastic pressure regulating plate 11; when the internal pressure of the air outlet bin 4 returns to balance, under the action of the elastic force of the elastic pressure regulating plate 11 itself and the thrust of the reset spring 12, the elastic pressure regulating plate 11 will retract and reset downward, driving the slide rod 13 and the shielding plate 10 to descend, and opening the air vent 9.
[0026] A guide component is further provided between the elastic pressure regulating sheet 11 and the top of the air outlet bin 4, and the guide component includes a guide rod 14 and a guide cylinder 15. The guide cylinder 15 is provided on the top wall of the air outlet bin 4, and the guide rod 14 is provided on the top of the elastic pressure regulating sheet 11. The guide rod 14 slides through the guide cylinder 15, and the return spring 12 is sleeved on the outside of the guide cylinder 15. The lengths of the guide rod 14 and the guide cylinder 15 are both shorter than the distance between the elastic pressure regulating sheet 11 and the top of the air outlet bin 4, so as to prevent the guide rod 14 and the guide cylinder 15 from being too long and blocking the elastic deformation of the elastic pressure regulating sheet 11. Through the cooperation of the guide rod 14 and the guide cylinder 15, it is ensured that the elastic pressure regulating sheet 11, the sliding rod 13 and the shielding sheet 10 can move up and down in the vertical direction, thereby improving the stability of the pressure elastic component assembly.
[0027] There are three air holes 9 , and the air holes 9 are evenly arranged on the fixing plate 8 .
[0028] The shielding piece 10 is in the shape of a petal with three petals, and the distance between adjacent petals is 120°. The positions of the petals correspond one-to-one with the positions of the air holes 9. The cross-sections of the sliding rod 13 and the guide hole are both rectangular. The rectangular sliding rod 13 prevents the shielding piece 10 from rotating during the lifting process, ensuring that the shielding piece 10 always corresponds to the position of the air hole 9.
[0029] A limiting ring 16 is further provided inside the connecting tube 7 . Under normal pressure, the shielding piece 10 abuts against the top of the limiting ring 16 to prevent the shielding piece 10 and the sliding rod 13 from pulling the elastic pressure regulating piece 11 downward.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A filter pressure reducing valve, comprising a valve body, wherein the front side of the valve body is provided with an air inlet, and the rear side of the valve body is provided with an air outlet, characterized in that: An upper air outlet bin and a lower pressure regulating bin are provided inside the valve body, and the air outlet bin and the pressure regulating bin are sealed by a partition, the air inlet is connected to the pressure regulating bin, and the air outlet is connected to the air outlet bin, and a connecting tube that connects the air outlet bin and the pressure regulating bin is passed through the center of the partition, and the top of the connecting tube is sealed with a fixed plate, and the fixed plate is provided with a plurality of air holes along the circumferential direction, and a shielding plate for blocking the air holes is provided under the fixed plate, and a pressure elastic component assembly is provided on the upper part of the air outlet bin, and the pressure elastic component assembly is connected to the shielding plate. Under a high-pressure environment, the pressure elastic component assembly drives the shielding plate to rise and seal the air hole, and under a normal pressure environment, the pressure elastic component assembly drives the shielding plate to descend and open the air hole.
2. A filter pressure reducing valve according to claim 1, characterized in that: The pressure elastic component includes an elastic pressure regulating plate and a return spring. The outer side of the elastic pressure regulating plate is fixedly connected to the inner wall of the air outlet bin. The top of the elastic pressure regulating plate is connected to the top of the air outlet bin through the return spring. A guide hole is provided in the center of the fixed plate. A sliding rod is slidably connected in the guide hole. The bottom of the elastic pressure regulating plate is connected to the shielding plate through the sliding rod.
3. A filter pressure reducing valve according to claim 2, characterized in that: A guide component is also provided between the elastic pressure regulating plate and the top of the air outlet bin, and the guide component includes a guide rod and a guide cylinder. The guide cylinder is provided on the top wall of the air outlet bin, and the guide rod is provided on the top of the elastic pressure regulating plate. The guide rod is slidably passed through the guide cylinder, and the return spring is sleeved on the outside of the guide cylinder.
4. A filter pressure reducing valve according to claim 3, characterized in that: There are three air holes, and the air holes are evenly arranged on the fixing plate.
5. A filter pressure reducing valve according to claim 4, characterized in that: The shielding piece is in the shape of a petal with three petals, the positions of the petals correspond one to one with the positions of the air holes, and the cross sections of the sliding rod and the guide hole are both rectangular.
6. A filter pressure reducing valve according to claim 2, characterized in that: A limiting ring is further provided inside the connecting tube, and the shielding piece abuts against the top of the limiting ring under normal pressure.