Solenoid valve mounting structure of reheater safety valve
By designing the series connection structure of the oil station, hydraulic cylinder and solenoid valve module in the reheater safety valve, the risk of oil leakage in the solenoid valve module in the high-temperature environment is solved, and the safety of the equipment and normal operation are guaranteed.
Patent Information
- Application Number
- CN202420073356.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-11
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-11
AI Technical Summary
The solenoid valve module of the reheater safety valve is prone to aging of the seal ring and oil leakage in high temperature environments, increasing the safety risks of the equipment.
A solenoid valve installation structure of reheater safety valve is designed, which is connected in series through the oil station, hydraulic cylinder and solenoid valve module. The oil station supply oil to meet the oil pressure requirements of the hydraulic cylinder and solenoid valve module, and is set up by separation. Hydraulic cylinder and solenoid valve module to avoid oil leakage risks caused by heat.
It effectively reduces the risk of oil leakage in high-temperature environments, and ensures the normal operation of the reheater safety valve and the safety of equipment.
Smart Images
Figure CN222479130U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of a reheater safety valve, in particular to a solenoid valve installation structure of a reheater safety valve. Background Art
[0002] The reheater safety valve is the last protective device of the boiler reheating system and the basis for safe and stable operation of the boiler. Two reheater safety valves are designed for each boiler. The two safety valves are arranged on the steam pipeline at the 61.6-meter level. A safety valve hydraulic cylinder is installed directly above the safety valve, and a solenoid valve module is arranged on the hydraulic cylinder. During operation, the solenoid valve will be affected by the heat dissipation of the pipeline, causing the temperature of the valve body to rise. The sealing ring in the solenoid valve is easily heated and aged, resulting in the hidden danger of oil leakage, affecting the safety and life of the equipment. At present, many power plants have suffered serious fire accidents due to oil leakage. Now most power plants have only moved the solenoid valve module to the nearest platform. There are still problems with high working temperature of the solenoid valve and oil leakage from the joints splashing onto the hot pipeline. Utility Model Content
[0003] The main purpose of the utility model is to provide a solenoid valve installation structure for a reheater safety valve, aiming to reduce the potential safety hazard of oil leakage caused by the increase of the surrounding environment during the operation of the solenoid valve module.
[0004] To achieve the above-mentioned purpose, the solenoid valve installation structure of the reheater safety valve proposed by the utility model includes:
[0005] An oil station, the oil station comprising an oil supply end and an oil return end;
[0006] A hydraulic cylinder, wherein the hydraulic cylinder comprises a first oil inlet and a first oil outlet, wherein the first oil inlet is connected to the oil supply end via a pipeline; and the hydraulic cylinder is connected to the oil station via a pipeline;
[0007] The solenoid valve module comprises a second oil inlet and a second oil outlet, the second oil inlet is connected to the oil supply end, the first oil outlet and the second oil outlet are connected to the oil return end, and the hydraulic cylinder and the solenoid valve module are arranged at intervals.
[0008] Optionally, the hydraulic cylinder further includes a third oil inlet, the solenoid valve module further includes a third oil outlet, and the third oil inlet is connected to the third oil outlet via a pipeline.
[0009] Optionally, the solenoid valve module includes two solenoid valves, one solenoid valve is connected to a corresponding hydraulic cylinder, and the oil station, the hydraulic cylinder and the solenoid valve are connected in series in sequence.
[0010] Optionally, the pipeline connecting the third oil inlet and the third oil outlet includes a first connecting section and a second connecting section, the first connecting section is connected to the third oil outlet, and the second connecting section is connected to the third oil inlet.
[0011] Optionally, the first connecting section is a metal tube, and the second connecting section is a high-pressure hose.
[0012] Optionally, the distance between the hydraulic cylinder and the solenoid valve module is greater than 10m.
[0013] Optionally, the solenoid valve installation structure of the reheater safety valve further includes a support frame, which is arranged at the bottom of the solenoid valve module, and the support frame is hollowed out.
[0014] Optionally, the solenoid valve installation structure of the reheater safety valve further includes an oil pan, which is disposed at the bottom of the support frame, and the size of the oil pan is larger than the bottom area of the solenoid valve module.
[0015] Optionally, the solenoid valve mounting structure of the reheater safety valve further includes an accumulator, and the accumulator is arranged between the oil supply end and the second oil inlet.
[0016] Optionally, both the oil supply end and the oil return end are provided with a stop valve.
[0017] In the technical solution of the utility model, a solenoid valve installation structure of a reheater safety valve is proposed, including an oil station, a hydraulic cylinder and a solenoid valve module connected in series in sequence. The oil station is used to supply oil to the hydraulic cylinder and the solenoid valve module to meet the oil pressure requirements for normal operation of the two. In addition, by separating the hydraulic cylinder and the solenoid valve module, the risk of oil leakage caused by aging of the sealing ring of the solenoid valve due to heat during operation is avoided, thereby ensuring the normal operation of the reheater safety valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0019] Figure 1 The present invention is a schematic structural diagram of an embodiment of the solenoid valve installation structure of the reheater safety valve provided by the present invention.
[0020] Description of Figure Numbers:
[0021]
[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0025] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0026] The reheater safety valve is the last protective device of the boiler reheating system and the basis for safe and stable operation of the boiler. Two reheater safety valves are designed for each boiler. The two safety valves are arranged on the steam pipeline at the 61.6-meter level. A safety valve hydraulic cylinder is installed directly above the safety valve, and a solenoid valve module is arranged on the hydraulic cylinder. During operation, the solenoid valve will be affected by the heat dissipation of the pipeline, causing the temperature of the valve body to rise. The sealing ring in the solenoid valve is easily heated and aged, resulting in the hidden danger of oil leakage, affecting the safety and life of the equipment. At present, many power plants have suffered serious fire accidents due to oil leakage. Now most power plants have only moved the solenoid valve module to the nearest platform. There are still problems with high working temperature of the solenoid valve and oil leakage from the joints splashing onto the hot pipeline.
[0027] In order to solve the above problems, the utility model proposes a solenoid valve installation structure of a reheater safety valve, aiming to reduce the hidden danger of oil leakage of the solenoid valve module. Figure 1 The present invention is a schematic structural diagram of an embodiment of the solenoid valve installation structure of the reheater safety valve provided by the present invention.
[0028] Please refer to Figure 1 The utility model proposes a solenoid valve installation structure 1000 of a reheater safety valve, comprising an oil station 1, a hydraulic cylinder 2 and a solenoid valve module 3, wherein the oil station 1 comprises an oil supply end 11 and an oil return end 12; the hydraulic cylinder 2 comprises a first oil inlet 21 and a first oil outlet 22, the first oil inlet 21 is connected to the oil supply end 11 through a pipeline; the hydraulic cylinder 2 is connected to the oil station 1 through a pipeline; the solenoid valve module 3 comprises a second oil inlet 31 and a second oil outlet 32, the second oil inlet 31 is connected to the oil supply end 11, the first oil outlet 22 and the second oil outlet 32 are connected to the oil return end 12, and the hydraulic cylinder 2 and the solenoid valve module 3 are arranged at intervals.
[0029] In the technical solution of the utility model, a solenoid valve installation structure 1000 of a reheater safety valve is proposed, comprising an oil station 1, a hydraulic cylinder 2 and a solenoid valve module 3 connected in series in sequence. The oil station 1 supplies oil to the hydraulic cylinder 2 and the solenoid valve module 3 to meet the oil pressure requirements for normal operation of the two. In addition, by separating the hydraulic cylinder 2 and the solenoid valve module 3, the risk of oil leakage due to aging of the sealing ring of the solenoid valve caused by heat during operation is avoided, thereby ensuring the normal operation of the reheater safety valve.
[0030] In an optional embodiment, in order to realize the flow of hydraulic oil between the solenoid valve module 3 and the hydraulic cylinder 2, the hydraulic cylinder 2 further includes a third oil inlet 23, and the solenoid valve module 3 further includes a third oil outlet 33, and the third oil inlet 23 is connected to the third oil outlet 33 through a pipeline. Figure 1 The third oil inlet 23 is provided at the top of the hydraulic cylinder 2, and oil is transported into the hydraulic cylinder 2 through the third oil inlet 23. The size of the valve block opening in the solenoid valve module 3 is adjusted by the size of the oil pressure in the hydraulic cylinder 2, thereby adjusting the circulation of the hydraulic oil in the pipeline.
[0031] In an optional embodiment, in order to ensure the normal operation of each boiler, the solenoid valve module 3 includes two solenoid valves, one solenoid valve is connected to a corresponding hydraulic cylinder 2, and the oil station 1, the hydraulic cylinder 2 and the solenoid valve are connected in series in sequence. The normal operation of the boiler is controlled and guaranteed by two groups of solenoid valves and the hydraulic cylinder 2. Further, in order to ensure the stability of the connection between the solenoid valve module 3 and the hydraulic cylinder 2 and avoid the abnormality of the solenoid valve module 3 caused by vibration of the hydraulic cylinder 2 during operation, the pipeline connected between the third oil inlet 23 and the third oil outlet 33 includes a first connecting section and a second connecting section, the first connecting section is connected to the third oil outlet 33, and the second connecting section is connected to the third oil inlet 23. The vibration and displacement generated during the operation of the hydraulic cylinder 2 can be absorbed and mitigated by making the pipeline connected between the solenoid valve module 3 and the hydraulic cylinder 2 use different materials, thereby protecting the solenoid valve module 3 to a certain extent, thereby avoiding the risk of loosening of the movable joint of the solenoid valve module 3 (the part pre-tightened by the thread or with a sealing ring) due to the vibration displacement transmitted by the hydraulic cylinder 2. Furthermore, in order to partially absorb the vibration displacement generated by the hydraulic cylinder 2 during operation, the first connection section is a metal tube and the second connection section is a high-pressure hose. By using a metal tube to connect one end close to the solenoid valve module 3, the high temperature resistance of the metal tube is better than that of a plastic tube or a rubber hose, which can avoid the hidden danger of fire caused by the solenoid valve module 3 rising in operating temperature or oil leakage at the joint and splashing to the adjacent pipes during operation, thereby ensuring the safe operation of the solenoid valve module 3 and reducing the hidden safety hazards that may cause fire due to oil leakage. In addition, the second connection section close to one end of the hydraulic cylinder 2 adopts a high-pressure hose. Due to the good plasticity of the high-pressure hose, the vibration displacement generated during the operation of the hydraulic cylinder 2 is easily absorbed by the high-pressure hose. In this way, even if the high-pressure hose is driven by the vibration displacement generated by the hydraulic cylinder 2 to move to a certain extent, these vibrations will be greatly weakened under the absorption and buffering effect of the high-pressure hose, and it is difficult to be transmitted to the solenoid valve module 3 through the first connection section, thereby further ensuring the stability of the solenoid valve module 3.
[0032] In an optional embodiment, in order to maintain a certain safety distance between the solenoid valve module 3 and the hydraulic cylinder 2, the distance between the hydraulic cylinder 2 and the solenoid valve module 3 is greater than 10m. On the one hand, the hydraulic cylinder 2 and the solenoid valve module 3 are kept at a sufficient distance to avoid the influence of the temperature of the solenoid valve module 3 gradually increasing during operation on the surroundings. On the other hand, the vibration displacement of the hydraulic cylinder 2 during operation is slowed down by a sufficiently long connecting pipe between the hydraulic cylinder 2 and the solenoid valve module 3. The specific distance can be adjusted according to the specific installation structure of the reheater safety valve, and is not specifically limited here.
[0033] In an optional embodiment, in order to achieve installation support for the solenoid valve module 3, the solenoid valve installation structure 1000 of the reheater safety valve also includes a support frame, which is arranged at the bottom of the solenoid valve module 3, and the support frame is hollowed out. By mounting the solenoid valve module 3 on a support frame, the solenoid valve module 3 is separated from other components or connecting pipes of the surrounding reheater safety valve, so as to prevent the hydraulic oil at the interface of the solenoid valve module 3 from splashing to other surrounding components. In addition, the hollow support frame is also convenient for the solenoid valve module 3 to dissipate heat. Optionally, the support frame is made of metal, such as iron, steel and other metals with a certain strength. On the one hand, the metal has sufficient strength to support the solenoid valve module 3. On the other hand, the high temperature resistance of the metal can prevent oil leakage at the interface of the solenoid valve module 3 from causing the temperature of the support frame to increase and cause spontaneous combustion. Furthermore, in order to prevent oil leakage at the interface of the solenoid valve module 3 from polluting the ground, the solenoid valve mounting structure 1000 of the reheater safety valve also includes an oil pan, which is arranged at the bottom of the support frame, and the size of the oil pan is larger than the bottom area of the solenoid valve module 3. By setting an oil pan at the bottom of the support frame, even if the solenoid valve module 3 fails and causes oil leakage at the interface, the oil pan below can collect the leaked hydraulic oil to prevent the hydraulic oil from flowing everywhere and polluting the ground or causing a fire hazard, thereby ensuring the normal operation of the reheater safety valve.
[0034] In an optional embodiment, in order to facilitate the adjustment of the oil pressure in the connecting pipeline between the oil station 1 and the solenoid valve module 3, the solenoid valve installation structure 1000 of the reheater safety valve further includes an accumulator 4, and the accumulator 4 is arranged between the oil supply end 11 and the second oil inlet 31. Please refer to Figure 1 The accumulator 4 is arranged between the oil station 1 and the solenoid valve module 3. When the oil pressure of the connecting pipeline between the oil station 1 and the solenoid valve module 3 is too high, the valve of the accumulator 4 can be opened to allow part of the hydraulic oil to flow into the accumulator 4. The pressure in the accumulator 4 increases, and part of the oil pressure is transferred to the accumulator 4 to reduce the oil pressure in the connecting pipeline. When the oil pressure of the connecting pipeline between the oil station 1 and the solenoid valve module 3 is too low, the valve of the accumulator 4 is opened to allow the hydraulic oil of the accumulator 4 to flow out to balance the oil pressure in the connecting pipeline, thereby achieving the effect of regulating the oil pressure. Furthermore, in order to control and regulate the oil supply and return of the oil station 1, the oil supply end 11 and the oil return end 12 are both provided with a stop valve 5. By respectively arranging stop valves 5 on the connecting pipes of the oil supply end 11 and the oil return end 12 of the oil station 1, the oil supply and oil return of the oil station 1 can be timely adjusted and controlled to ensure the stability of the circulation of hydraulic oil between the oil station 1, the hydraulic cylinder 2 and the solenoid valve module 3. In this way, when a certain link fails, the stop valves 5 at the oil supply end 11 and the oil return end 12 can be used to block the flow of hydraulic oil in time for easy maintenance.
[0035] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A solenoid valve installation structure for a reheater safety valve, characterized in that: include: An oil station, the oil station comprising an oil supply end and an oil return end; A hydraulic cylinder, wherein the hydraulic cylinder comprises a first oil inlet and a first oil outlet, wherein the first oil inlet is connected to the oil supply end via a pipeline; and the hydraulic cylinder is connected to the oil station via a pipeline; The solenoid valve module comprises a second oil inlet and a second oil outlet, the second oil inlet is connected to the oil supply end, the first oil outlet and the second oil outlet are connected to the oil return end, and the hydraulic cylinder and the solenoid valve module are arranged at intervals.
2. The solenoid valve installation structure of the reheater safety valve according to claim 1, characterized in that: The hydraulic cylinder further includes a third oil inlet, and the solenoid valve module further includes a third oil outlet. The third oil inlet is connected to the third oil outlet via a pipeline.
3. The solenoid valve installation structure of the reheater safety valve according to claim 2, characterized in that: The solenoid valve module includes two solenoid valves, one solenoid valve is connected to a corresponding hydraulic cylinder, and the oil station, the hydraulic cylinder and the solenoid valve are connected in series in sequence.
4. The solenoid valve installation structure of the reheater safety valve according to claim 2, characterized in that: The pipeline connecting the third oil inlet and the third oil outlet comprises a first connecting section and a second connecting section, wherein the first connecting section is connected to the third oil outlet, and the second connecting section is connected to the third oil inlet.
5. The solenoid valve installation structure of the reheater safety valve according to claim 4, characterized in that: The first connecting section is a metal pipe, and the second connecting section is a high-pressure hose.
6. The solenoid valve installation structure of the reheater safety valve according to any one of claims 2 to 5, characterized in that: The distance between the hydraulic cylinder and the solenoid valve module is greater than 10m.
7. The solenoid valve installation structure of the reheater safety valve according to claim 6, characterized in that: The solenoid valve installation structure of the reheater safety valve also includes a support frame, which is arranged at the bottom of the solenoid valve module, and the support frame is hollowed out.
8. The solenoid valve installation structure of the reheater safety valve according to claim 7, characterized in that: The solenoid valve installation structure of the reheater safety valve also includes an oil pan, which is arranged at the bottom of the support frame, and the size of the oil pan is larger than the bottom area of the solenoid valve module.
9. The solenoid valve installation structure of the reheater safety valve according to claim 8, characterized in that: The solenoid valve installation structure of the reheater safety valve also includes an accumulator, and the accumulator is arranged between the oil supply end and the second oil inlet.
10. The solenoid valve installation structure of the reheater safety valve according to claim 9, characterized in that: The oil supply end and the oil return end are both provided with stop valves.