CN220727209U - Check valve of high-pressure steam pipeline of power plant - Google Patents
Check valve of high-pressure steam pipeline of power plant Download PDFInfo
- Publication number
- CN220727209U CN220727209U CN202322410714.7U CN202322410714U CN220727209U CN 220727209 U CN220727209 U CN 220727209U CN 202322410714 U CN202322410714 U CN 202322410714U CN 220727209 U CN220727209 U CN 220727209U
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- Prior art keywords
- valve
- power plant
- pressure steam
- joint
- fixed
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- 239000010687 lubricating oil Substances 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model discloses a check valve of a high-pressure steam pipeline of a power plant, which comprises a valve body formed by closing two valve casings, wherein a joint is fixedly arranged on the valve casings, one end of each valve casing, which is far away from the joint, is arranged in an open shape, a flange plate is fixedly sleeved on the end of each valve casing, a valve core corresponding to the joint is arranged in each valve casing, a fixed block is also arranged in each valve casing, the fixed blocks are fixedly connected with the valve casings through three connecting rods, a circular groove is formed in the end face, which is far away from the joint, of each fixed block, a piston part is slidably arranged in each circular groove, a fixed rod is fixedly connected with the piston part coaxially, and the fixed rods penetrate through the fixed blocks and are fixedly connected with the valve cores, and lubricating oil is filled in the circular grooves. The utility model has simple structure and reasonable design, can effectively seal the steam pipeline by completely utilizing self gravity, ensures a passage when a high pressure condition occurs, and ensures the smooth movement of the valve core by arranging the lubricating oil structure, so that the lubricating oil can ensure a long-time effect.
Description
Technical Field
The utility model relates to the technical field related to power plants, in particular to a check valve of a high-pressure steam pipeline of a power plant.
Background
In the prior art, the technology of generating electricity by utilizing the waste heat of water and waste gas is mature, and various technologies capable of improving the thermal efficiency of a boiler, improving the stability of a waste heat generating system and the like exist. However, in the power plant, because the working condition changes frequently, for example, main steam generated by the kiln tail boiler flows to the main steam pipeline of the kiln head due to the temperature fluctuation of the cement kiln head, so that the waste of hot steam, the reduction of the power generation efficiency of the kiln tail boiler and the great reduction of the waste heat utilization efficiency are easily caused, and therefore, a check valve is required to be arranged on the high-pressure steam pipeline to avoid the waste of the main steam; the check valve mainly relies on the medium to flow to automatically open and close the valve clack, and is used for preventing the medium from flowing backwards; the valve core is easy to wear with the valve body in the long-term action process, so that the effect of the check valve is reduced, and the abrasion can be effectively avoided when lubricating oil is smeared between the valve core and the valve, but the valve core is generally in direct contact with a conveying medium, and the lubricating oil is easy to be influenced by the medium to cause loss when being smeared directly.
To this end, we propose a check valve for a high pressure steam line of a power plant to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a check valve of a high-pressure steam pipeline of a power plant.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a check valve for a high pressure steam line of a power plant, comprising: the valve body is formed by closing two valve casings, fixedly provided with connects on the valve casing, the one end that the valve casing kept away from the joint sets up to open form and fixed cover is equipped with the ring flange, be provided with the case that corresponds the joint in the valve casing, still be provided with the fixed block in the valve casing, the fixed block is through three connecting rod and valve casing fixed connection, be provided with circular recess on the terminal surface that the joint was kept away from to the fixed block, the slip is provided with the piston spare in the circular recess, the coaxial fixedly connected with dead lever of piston spare, the dead lever runs through the fixed block and with case fixed connection, the intussuseption of circular recess is filled with lubricating oil.
Preferably, an oil groove is formed in the end face, far away from the fixed rod, of the piston piece, and a plurality of oil holes communicated with the oil groove are formed in the outer wall of the piston piece.
Preferably, the two positions of the valve casings and the two positions of the two fixing blocks, which are mutually attached, are fixedly provided with annular sealing rings.
Preferably, the positions of the connectors corresponding to the valve cores and the valve cores are subjected to chamfering treatment.
Preferably, an annular groove is formed in the end face, close to the fixed rod, of the valve core.
Preferably, a sealing structure is arranged on the contact surface of the fixing rod and the fixing block.
Compared with the prior art, the utility model has the beneficial effects that: the device comprises two valve casings, and two valve casings structure are the same and inner structure is also the same, and two valve casings pass through flange structure concatenation fixed valve body that can form, and overall structure is simple and reasonable, and the inside case that is provided with of valve casing can carry out one-way shutoff to the joint through the dead weight of case, after the pressure of non-case one side reaches the certain degree, overcomes case gravity effect and can let steam pass through. The valve has the advantages that the valve has no worry of fatigue strength plastic deformation of a later spring, the service life is long, the later maintenance is avoided, meanwhile, lubricating oil is filled in the circular groove of the fixed block, the circular groove for containing the lubricating oil is arranged on the piston part, and the oil holes for communicating the circular groove are arranged on the side wall of the piston part, so that the lubricating effect is ensured in the reciprocating movement process of the piston part, the lubricating oil is not in direct contact with a conveying medium, and the lubricating oil is not easy to run off while playing a good lubricating effect.
Drawings
FIG. 1 is a schematic perspective view of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model;
fig. 3 is a schematic structural view of the valve housing and its connection parts according to the present utility model.
In the figure:
1 valve body, 2 valve casing, 3 joints, 4 flange plates, 5 valve core, 6 fixed blocks, 7 connecting rods, 8 piston pieces, 9 fixed rods and 10 annular sealing rings.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to figures 1-3, a check valve for a high pressure steam line of a power plant, comprising:
the valve body 1 is formed by closing two valve casings 2, a joint 3 is fixedly arranged on the valve casings 2, the joint 3 is used for connecting a pipeline and can be used for passing steam, one end of the valve casing 2 far away from the joint 3 is opened, a flange 4 is fixedly sleeved on the end, corresponding to the valve core 5 of the joint 3, the joint 3 is plugged by the valve core 5, one-way plugging check is realized by the self gravity of the valve core 5, and when the high-pressure steam pressure is greater than the gravity of the valve core 5, the valve core 5 can be jacked up to form a passage, and the gravity of the valve core 5 in the valve body 1 is composed of the weights of the two valve cores 5;
in order to realize the control to case 5, still be provided with fixed block 6 in valve casing 2, fixed block 6 is provided with circular recess through three connecting rod 7 and valve casing 2 fixed connection on the terminal surface that fixed block 6 kept away from joint 3, the slip is provided with piston 8 in the circular recess, piston 8 coaxial fixedly connected with dead lever 9, dead lever 9 runs through fixed block 6 and with case 5 fixed connection, piston 8 slides in the circular recess, guarantee the stable removal of case 5 in valve body 1, in order to guarantee lubrication, the smooth and easy of case 5 removal, be filled with lubricating oil in the circular recess, be provided with the oil groove on the terminal surface that piston 8 kept away from dead lever 9, be provided with the oilhole of a plurality of intercommunication oil grooves on the piston 8 outer wall, in piston 8 removal in-process, fully lubricate between its and the circular recess, the interpolation of lubricating oil is more convenient, just leading-in the circular recess before the concatenation combination.
In order to increase the effect of the integral valve body, an annular sealing ring 10 is fixedly arranged at the mutually attached position of the two valve casings 2 and the mutually attached position of the two fixed blocks 6, so that the integral tightness of the valve body formed by splicing is ensured, the valve core 5 and the position of the joint 3 corresponding to the valve core 5 are subjected to chamfering treatment, the valve core 5 is provided with a part extending into the joint 3, the valve core 5 is also provided with a part attached to the valve casing 2, the end face of the valve core 5, which is close to the fixed rod 9, is provided with an annular groove, and a high-pressure medium acts on the valve core 5 when being led in from the non-joint 3, so that the plugging effect is increased; in the moving process of the valve core 5, lubricating oil is stored in the circular groove, so that a sealing structure is arranged on the contact surface of the fixed rod 9 and the fixed block 6, and the prior art such as a sealing ring is adopted, so that the lubricating oil is limited in the circular groove, and meanwhile, the moving action of the valve core 5 is not influenced.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. A non-return valve for a high pressure steam line of a power plant, comprising: the valve body (1) is formed by closing two valve casings (2), fixedly provided with connects (3) on valve casing (2), the one end that connects (3) was kept away from to valve casing (2) is set up to open form and fixed cover is equipped with ring flange (4), be provided with case (5) that correspond joint (3) in valve casing (2), still be provided with fixed block (6) in valve casing (2), fixed block (6) are through three connecting rod (7) and valve casing (2) fixed connection, be provided with circular recess on the terminal surface that connects (3) was kept away from to fixed block (6), the slip is provided with piston spare (8) in the circular recess, coaxial fixedly connected with dead lever (9) of piston spare (8), dead lever (9) run through fixed block (6) and with case (5) fixed connection, the intussuseption of circular recess is filled with lubricating oil.
2. The check valve of the high-pressure steam pipeline of the power plant according to claim 1, wherein an oil groove is arranged on the end face of the piston member (8) far away from the fixed rod (9), and a plurality of oil holes communicated with the oil groove are arranged on the outer wall of the piston member (8).
3. A non-return valve for a high pressure steam line of a power plant according to claim 1, characterized in that the two valve casings (2) are fixedly provided with annular sealing rings (10) at the positions where they are attached to each other and the positions where the two fixing blocks (6) are attached to each other.
4. The check valve of a high-pressure steam pipeline of a power plant according to claim 1, wherein the joint (3) is chamfered corresponding to the position of the valve core (5) and the valve core (5).
5. A non-return valve for a high pressure steam line of a power plant according to claim 1, characterized in that the end face of the valve core (5) close to the fixing rod (9) is provided with an annular groove.
6. A non-return valve for a high pressure steam line of a power plant according to claim 1, characterized in that the contact surface of the fixing rod (9) and the fixing block (6) is provided with a sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322410714.7U CN220727209U (en) | 2023-09-06 | 2023-09-06 | Check valve of high-pressure steam pipeline of power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322410714.7U CN220727209U (en) | 2023-09-06 | 2023-09-06 | Check valve of high-pressure steam pipeline of power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220727209U true CN220727209U (en) | 2024-04-05 |
Family
ID=90494596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322410714.7U Active CN220727209U (en) | 2023-09-06 | 2023-09-06 | Check valve of high-pressure steam pipeline of power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220727209U (en) |
-
2023
- 2023-09-06 CN CN202322410714.7U patent/CN220727209U/en active Active
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