Large-diameter pipeline pressure testing device
Through the design and strengthening of the combination of the type blind plate and the pressure test short pipe, the problem of the blind plate being easy to deform and difficult to reuse during pressure test in large-diameter pipelines is solved, and safety and economy are improved.
Patent Information
- Application Number
- CN202421287890.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-08-19
- Estimated Expiration
- 2034-06-06
AI Technical Summary
During the pressure test of existing large-diameter pipelines, blind plates are prone to deformity, have large water consumption for pressure testing, long construction period, and have great safety hazards. The blind plates are difficult to reuse, resulting in difficult to ensure construction safety and construction period.
A reinforced blind plate is designed, with strip steel plates used as reinforcement ribs inside and outside, and fully welded with the ends of the pressure test short pipe, combined with a pressing and water discharge device to achieve the strength and safety guarantee of the blind plate, while allowing advance processing and reuse.
Effectively avoid deformation and fracture of blind plates, reduce water resources, shorten construction period, reduce construction risks, improve safety and save costs.
Smart Images
Figure CN223244204U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building construction, in particular to a large-diameter pipeline pressure testing device. Background Art
[0002] Currently, large-diameter outdoor steel pipes with a diameter of more than 2 meters are typically connected by welding. During pressure testing, blind plates are welded to the pipe. This can easily deform under pressure testing conditions, consume large amounts of water, and require long preparation times, which can delay construction and pose numerous uncertainties. Hydrostatic testing of large-diameter pipelines presents significant risks. Large-diameter pipelines are typically laid in trenches, with test sections typically spanning approximately 1 kilometer. If a blind plate deforms or fractures, a large amount of water could leak into the trench in a short period of time, posing a serious safety hazard to workers. Outdoor pressure testing requires a large amount of water, resulting in insufficient water reuse and the need for mechanical or electric pumping units to transfer water. Traditional blind plates are removed after testing and are difficult to reuse. The complex operating environment of large-scale outdoor pipeline pressure testing makes traditional blind plate testing difficult to ensure worker safety, construction schedules, and resource utilization. To ensure worker safety, project schedules, and resource utilization, a large-diameter pipeline pressure testing device has been designed. Utility Model Content
[0003] The purpose of the utility model is to address the deficiencies of the existing technology and provide a large-diameter pipeline pressure testing device, comprising a pressure testing short tube arranged at both ends of a solid pipeline, a blind plate provided on one side of the pressure testing short tube for closing the pressure testing short tube, the other side of the pressure testing short tube having the same specifications as the solid pipeline and welded and fixed so that the pressure testing short tube is communicated with the interior of the solid pipeline, a manhole communicating with the interior of the pressure testing short tube is provided at the upper end of the pressure testing short tube, a pressure-pressing device for supplying pressure and detecting is provided on the blind plate, and reinforcing ribs for bypassing the pressure-pressing device are provided on the inner and outer sides of the blind plate.
[0004] Preferably, a flange is provided at the upper end of the manhole, and the flange is used to connect to an external water supply device and close the manhole.
[0005] Preferably, a first hoisting hole is provided on the side wall of the manhole, and a second hoisting hole is provided on the blind plate above the pressing device.
[0006] Preferably, the pressure-pressing device includes two gate valves and a pressure gauge, and the pressure-pressing device is connected to an external pressure-supplying device.
[0007] Preferably, a water drain device is provided at the bottom of the blind plate, and the water drain device is connected to the interior of the pressure test short tube.
[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the blind plate of the present invention is a reinforced type, and strip steel plates are used as reinforcing ribs inside and outside the blind plate. The reinforcing ribs are fully welded to the blind plate and the end of the pressure test short pipe to ensure the strength of the blind plate. When the pipeline is pressure tested, personnel can largely avoid safety accidents caused by the deformation and breakage of the blind plate, which may cause the pipeline pressure test water to leak into the groove in a short time, thereby ensuring the safety of the pressure test personnel to a large extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0010] Figure 1 It is a structural diagram of the utility model;
[0011] In the figure: 1-manhole; 2-first lifting hole; 3-blind plate; 4-reinforcement rib; 5-second lifting hole; 6-pressure device; 7-drainage device; 8-pressure test short pipe. DETAILED DESCRIPTION
[0012] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.
[0013] Reference Figure 1The utility model provides a large-diameter pipeline pressure test device, including a pressure test short pipe 8 arranged at both ends of the solid pipeline, one side of the pressure test short pipe 8 is provided with a blind plate for closing the pressure test short pipe 8, and the other side of the pressure test short pipe 8 is the same as the specifications of the solid pipeline and is welded and fixed, so that the pressure test short pipe 8 is communicated with the interior of the solid pipeline. A manhole 1 connected to the interior of the pressure test short pipe 8 is provided at the upper end of the pressure test short pipe 8. The blind plate is provided with a pressure device 6 for pressure delivery and detection. The inner and outer sides of the blind plate 3 are provided with reinforcing ribs 4 that bypass the pressure device 6. In the utility model, in order to avoid the risk of the blind plate deforming and breaking under high pressure during pipeline pressure testing: large-scale pipeline pressure testing, due to the long mileage of the pipeline and the pipeline basically laid in the groove, ordinary blind plates are used, the test pressure is large, the blind plate area is large during pressure testing, there is no reinforcement measures or insufficient reinforcement measures in the middle, the blind plate is easy to deform, and the safety of personnel is difficult to ensure. In order to avoid injuries to personnel caused by deformation and rupture of the blind plate, this pressure test device is designed. The blind plate is a reinforced type, and strip steel plates are used as reinforcing ribs 4 inside and outside the blind plate. The reinforcing ribs 4 are fully welded to the blind plate and the end of the short pipe to ensure the strength of the blind plate. When the pipeline is pressure tested, personnel can largely avoid safety accidents caused by the pipeline pressure test water leaking into the groove in a short time due to deformation and rupture of the blind plate, thereby ensuring the safety of the pressure test personnel to a large extent. At the same time, the traditional blind plate is welded to the inner wall of the pipeline, and the blind plate welding operation can only be carried out after the pipeline installation is completed. The traditional method takes up construction time. This pressure test device does not take up the time of pipeline installation and can be processed in advance. After the pipeline installation is completed, it is only necessary to hoist the pressure test device to the pipe mouth through the first hoisting hole 2 set on the side wall of the manhole 1 and the second hoisting hole 5 on the blind plate above the pressure device 6, and it can be directly welded to the pipeline to be pressure tested and put into use without welding other components. This saves time in pipeline installation. Conventional blind plates need to be cut off after pressure testing. Since conventional blind plates are welded to the inner wall of the pipeline, their diameter becomes smaller after cutting, making them unsuitable for subsequent reusability and becoming disposable consumables. This pressure testing device only requires cutting off the short pressure testing tube 8 along the weld seam and then grinding the groove for reuse, thus saving costs.
[0014] The utility model injects water through the manhole 1 so that the experimental water fills the pressure test short pipe 8 and the physical pipeline. After the test pressure is released, half of the water in the pipeline can be pumped from the upper manhole 1 to the next pressure test section using the connecting pipe principle, saving the cost of mechanical pumping and without water loss. During the experiment, the pressure device 6 continuously supplies pressure to the inside of the pipeline and detects the internal pressure of the pipeline, so that the pressure bearing capacity of the pipeline can be intuitively monitored. A flange is provided at the upper end of the manhole 1, and the flange is used to connect an external water supply device and close the manhole 1, giving the pipeline a sufficient enclosed space.
[0015] In addition, the pressure-generating device 6 includes two gate valves and a pressure gauge, and the functions of supplying and stopping pressure are achieved by opening and closing the gate valves. The pressure-generating device 6 is connected to an external pressure-generating device, which can be a water pump or an air pump, depending on the specific situation.
[0016] Finally, a drain device 7 is provided at the bottom of the blind plate, and the drain device 7 is connected to the interior of the pressure test short pipe 8. Since not all water can be discharged through the manhole 1, the excess water is discharged from the pipe through the drain device 7 (drain valve) to prevent it from flowing into the groove.
[0017] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims
1. A large-diameter pipeline pressure testing device, characterized by: It includes a pressure test short tube arranged at both ends of the solid pipeline, a blind plate is provided on one side of the pressure test short tube for closing the pressure test short tube, the other side of the pressure test short tube has the same specifications as the solid pipeline and is welded and fixed, so that the pressure test short tube is communicated with the interior of the solid pipeline, and a manhole connected to the interior of the pressure test short tube is provided at the upper end of the pressure test short tube, a pressure device for pressure delivery and detection is provided on the blind plate, and reinforcing ribs are provided on the inner and outer sides of the blind plate to bypass the pressure device.
2. A large-diameter pipeline pressure testing device according to claim 1, characterized in that: A flange is provided at the upper end of the manhole, and the flange is used to connect an external water supply device and close the manhole.
3. A large-diameter pipeline pressure testing device according to claim 2, characterized in that: The side wall of the manhole is provided with a first hoisting hole, and the blind plate is provided with a second hoisting hole above the pressing device.
4. A large-diameter pipeline pressure testing device according to claim 3, characterized in that: The pressure-pressing device includes two gate valves and a pressure gauge, and the pressure-pressing device is connected to an external pressure-supplying device.
5. A large-diameter pipeline pressure testing device according to claim 4, characterized in that: A water drain device is provided at the bottom of the blind plate, and the water drain device is connected to the interior of the pressure test short tube.