Valve pressure leaking stoppage device
By designing a valve pressure-blocking device including an annular bracket, a protective cover and a fixture, the problem of leakage of valves in high-temperature and high-pressure steam pipelines is solved, and rapid leakage is achieved, equipment and personal safety is ensured, and temporary leakage plugging of the valve is completed without affecting steam transportation.
Patent Information
- Application Number
- CN202421843875.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-01
AI Technical Summary
Valves in high-temperature and high-pressure steam pipelines are prone to leakage due to aging and wear of seals, resulting in an increase in steam leakage, endangering equipment and personal safety. Since steam cannot be shut down, the valve cannot be repaired normally.
A valve pressure-blocking device is designed, including an annular bracket installed on the outside of the valve flange, a protective cover covering the annular bracket, and a fixing frame for fixing the protective cover. A pressure relief port is set on the top of the protective cover, and a steam exhaust valve is installed at the pressure relief port to relieve pressure and exhaust steam through the exhaust valve to facilitate the installation of the protective cover.
The device can quickly cover the valve, avoid the continuous leakage of high-pressure steam, ensure the safety of the equipment and personal safety, provide guarantees for the safe operation of the equipment, and achieve temporary leakage plugging of the valve without affecting the normal delivery of steam.
Smart Images
Figure CN222992310U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve leakage plugging, in particular to a valve pressure leakage plugging device. Background Art
[0002] Taigang Thermal Power Plant is responsible for the supply of energy and electricity. Some high-temperature and high-pressure steam pipelines in the power plant are subject to long-term wear and erosion, and valves are prone to leakage, especially the valve stem seals of the valves are aged and worn, leading to leakage. The steam pressure in the steam pipeline is as high as 10MPa. Once the leakage increases, it will endanger the safety of equipment and personnel. Since the steam cannot be shut down and the valve cannot be repaired, when the steam leakage continues to increase, it will inevitably cause the steam pipeline to burst and the generator set to shut down. Therefore, there is an urgent need for a valve pressure plugging device that can quickly complete the plugging of the valve leakage part. Utility Model Content
[0003] The utility model aims at the deficiencies of the prior art and provides a valve pressure plugging device.
[0004] The utility model is realized through the following technical scheme, and provides a valve pressure plugging device, comprising an annular support platform installed on the outside of the valve flange and in sealing contact with the flange, a protective cover covering the upper surface of the annular support platform and covering the valve, and a fixing frame for fixing the protective cover; a pressure relief port is arranged on the top of the protective cover, and a steam exhaust valve is installed at the pressure relief port.
[0005] Preferably, a groove for embedding the lower end of the protective cover is arranged on the upper surface of the annular support platform, and a sealing ring is arranged at the bottom of the groove. The lower end of the protective cover is placed in the groove and fixed to the annular support platform by a fixing frame.
[0006] Preferably, in order to facilitate the installation of the annular support on the outside of the valve flange, the annular support is formed by connecting two arc-shaped plates, and ear plates are fixed at both ends of each arc-shaped plate. The ear plates are fixed in pairs to fix the two arc-shaped plates into one.
[0007] Preferably, each ear plate is provided with a fixing hole, and the fixing bolt passes through the fixing hole and is connected with the fixing nut.
[0008] Preferably, a sealing gasket is fixed on the inner side surface and the end surface of each arc-shaped plate, so that the contact surface between the annular support and the valve flange and the contact surfaces of the two arc-shaped plates are all sealed.
[0009] Preferably, in order to enhance the stability of the installation of the annular support, a circle of support plates for supporting the annular support is fixed at the bottom of the valve flange, and the support plates are welded to the valve flange.
[0010] Preferably, the fixing frame includes at least one U-shaped connecting rod and a vertical screw fixed to the top of the protective cover.
[0011] Preferably, the U-shaped connecting rod includes a horizontal rod located above the protective cover and two vertical rods located on the sides of the protective cover. The upper ends of the two vertical rods are respectively fixed to the two ends of the horizontal rod, and the lower ends of the two vertical rods are fixed with connecting screws, which pass through the annular support and are connected to the connecting nut; the vertical screw passes through the horizontal rod and is connected to the locking nut. The protective cover is fixed to the fixing frame by the cooperation of the vertical screw and the locking nut, and the fixing frame is fixed to the annular support by the cooperation of the connecting screw and the connecting nut, so that the protective cover can be firmly covered on the upper surface of the annular support.
[0012] Preferably, in order to enhance the fixing effect of the protective cover and further enhance the sealing effect of the device, there are two U-shaped connecting rods, and the cross bars of the two U-shaped connecting rods are arranged vertically in a cross shape.
[0013] Preferably, a connecting hole for the connecting screw to pass through is provided on the annular support.
[0014] Preferably, there are four connecting holes, and the connecting screws pass through the corresponding connecting holes and are connected to the connecting nuts.
[0015] The beneficial effects of the utility model are:
[0016] The utility model is easy to install, and the valve can be covered promptly and quickly by the utility model, so that the high-pressure steam is prevented from continuing to leak and endangering the equipment and personal safety, thereby providing a guarantee for the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model;
[0018] Figure 2 It is a longitudinal cross-sectional structural schematic diagram of the utility model;
[0019] Figure 3 It is a schematic diagram of the top view of the annular support platform of the utility model;
[0020] As shown in the figure:
[0021] 1. Valve flange, 2. Ring support, 3. Valve, 4. Protective cover, 5. Sealing ring, 6. Support plate, 7. Vertical screw, 8. Cross bar, 9. Vertical bar, 10. Connecting screw, 11. Connecting nut, 12. Locking nut, 13. Exhaust valve, 14. Connecting hole, 21. Arc plate, 22. Ear plate, 23. Fixing bolt, 24. Sealing gasket, 25 Fixing nut. DETAILED DESCRIPTION
[0022] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.
[0023] like Figure 1-3 As shown, the utility model comprises an annular support 2 installed outside the valve flange 1 and in sealing contact with the valve flange 1, a protective cover 4 covering the upper surface of the annular support 2 and covering the valve 3, and a fixing frame for fixing the protective cover 4.
[0024] A groove for embedding the lower end of the protective cover 4 is arranged on the upper surface of the annular support 2, and a sealing ring 5 is arranged at the bottom of the groove. The lower end of the protective cover 4 is placed in the groove and fixed to the annular support 2 by a fixing frame.
[0025] In this embodiment, in order to facilitate the installation of the annular support 2 on the outside of the valve flange 1, the annular support 2 is formed by connecting two arc plates 21, and ear plates 22 are fixed at both ends of each arc plate 21. The ear plates 22 are fixed in pairs so that the two arc plates 21 are fixed as a whole. A fixing hole is provided on each ear plate 22, and the fixing bolt 23 passes through the fixing hole and is connected with the fixing nut 25. In order to improve the sealing performance of the device, a sealing gasket 24 is fixed on the inner side and end face of each arc plate 21, so that the contact surface between the annular support 2 and the valve flange 1 and the contact surface of the two arc plates 21 are sealed.
[0026] In this embodiment, in order to enhance the installation stability of the annular support platform 2 , a circle of support plates 6 for supporting the annular support platform 2 is fixed at the bottom of the valve flange 1 , and the support plates 6 are welded to the valve flange 1 .
[0027] The fixing frame includes at least one U-shaped connecting rod and a vertical screw rod 7 fixed to the top of the protective cover 4. The U-shaped connecting rod includes a horizontal rod 8 located above the protective cover 4 and two vertical rods 9 located on the sides of the protective cover 4. The upper ends of the two vertical rods 9 are respectively fixed to the two ends of the horizontal rod 8, and the lower ends of the two vertical rods 9 are fixed with connecting screws 10. The connecting screws 10 pass through the annular support 2 and are connected to the connecting nuts 11. The vertical screw rod 7 passes through the horizontal rod 8 and is connected to the locking nut 12. The protective cover 4 is fixed to the fixing frame by the cooperation of the vertical screw rod 7 and the locking nut 12, and the fixing frame is fixed to the annular support 2 by the cooperation of the connecting screws 10 and the connecting nuts 11, so that the protective cover 4 can be firmly covered on the upper surface of the annular support 2.
[0028] In this embodiment, in order to enhance the fixing effect of the protective cover 4 and further enhance the sealing effect of the device, there are two U-shaped connecting rods, and the cross bars 8 of the two U-shaped connecting rods are arranged crosswise up and down. The annular support 2 is provided with connecting holes 14 for the connecting screws 10 to pass through. In this embodiment, there are four connecting holes 14, and the connecting screws 10 are connected to the connecting nuts 11 after passing through the corresponding connecting holes 14.
[0029] A pressure relief port is arranged on the top of the protective cover 4 , and a steam exhaust valve 13 is installed at the pressure relief port. Pressure and steam are discharged through the steam exhaust valve 13 , which facilitates the installation of the protective cover 4 .
[0030] During specific operation, after the valve 3 leaks, first weld a circle of support plate 6 at the bottom of the valve flange 1, fasten and fix the two arc plates 21 to the outer side of the valve flange 1 above the support plate 6, cover the valve 3 with the protective cover 4, and at this time, the exhaust valve 13 is in the open state, and then fix the protective cover 4 with the fixing frame to complete the installation of the device, and finally close the exhaust valve 13 to plug the leakage of the valve 3.
[0031] The utility model can cover the valve 3 in time and quickly, avoiding the high-pressure steam from leaking and endangering the equipment and personal safety, and providing guarantee for the safe operation of the equipment. The utility model can block the valve 3 without affecting the normal transportation of steam, and the valve 3 can be replaced when the machine is shut down for overhaul.
[0032] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.
Claims
1. A valve pressure plugging device, characterized in that: It includes an annular support installed on the outside of the valve flange and in sealing contact with the valve flange, a protective cover covering the upper surface of the annular support and covering the valve, and a fixing frame for fixing the protective cover; a pressure relief port is arranged on the top of the protective cover, and a steam exhaust valve is installed at the pressure relief port.
2. A valve pressure plugging device according to claim 1, characterized in that: A circle of grooves for embedding the lower end of the protective cover is arranged on the upper surface of the annular support platform, and a sealing ring is arranged at the bottom of the groove.
3. A valve pressure plugging device according to claim 1, characterized in that: The annular support platform is formed by connecting two arc-shaped plates, and ear plates are fixed at both ends of each arc-shaped plate. The ear plates are fixed in pairs so that the two arc-shaped plates are fixed as a whole.
4. A valve pressure plugging device according to claim 1, characterized in that: A sealing gasket is fixed on the inner side surface and the end surface of each arc-shaped plate.
5. A valve pressure plugging device according to claim 1, characterized in that: A circle of support plates for supporting the annular support platform is fixed at the bottom of the valve flange, and the support plates are welded to the valve flange.
6. A valve pressure plugging device according to claim 1, characterized in that: The fixing frame includes at least one U-shaped connecting rod and a vertical screw rod fixed on the top of the protective cover.
7. A valve pressure plugging device according to claim 6, characterized in that: The U-shaped connecting rod includes a horizontal rod located above the protective cover and two vertical rods located on the sides of the protective cover. The upper ends of the two vertical rods are respectively fixed to the two ends of the horizontal rod, and the lower ends of the two vertical rods are fixed with connecting screws. The connecting screws pass through the annular support and are connected to the connecting nuts; the vertical screws pass through the horizontal rod and are connected to the locking nuts.
8. A valve pressure plugging device according to claim 7, characterized in that: There are two U-shaped connecting rods, and the cross bars of the two U-shaped connecting rods are arranged vertically in a cross shape.
9. A valve pressure plugging device according to claim 1, characterized in that: A connecting hole for the connecting screw to pass through is arranged on the annular support platform.