A device for monitoring the pressure grouting and fullness of a pipeline
By using a device consisting of connecting pipes, vent pipe assemblies, and grout stop valves in the grouting construction of cast-in-place beams, the problems of incomplete sealing and poor grout discharge were solved, achieving high efficiency and safety in grouting construction and ensuring sufficient discharge of grout and construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA CONSTR EIGHT ENG DIV CORP LTD
- Filing Date
- 2025-04-09
- Publication Date
- 2026-06-12
AI Technical Summary
In the existing technology, the grouting construction of pipes in cast-in-place beams has problems such as incomplete sealing of openings and weak connections, which leads to poor grout discharge from the vent pipe and cannot fully guarantee the effectiveness and grout discharge efficiency of the vent pipe.
A device for grouting, venting, and fullness monitoring in pipelines is employed, comprising a connecting pipe, a venting pipe assembly, and a grout stop valve. By installing the device at the highest point of a curved pipeline, effective grouting control is achieved using a plastic connector and a venting hose, ensuring the full discharge and monitoring of grouting material.
It improves the efficiency and safety of grouting construction, reduces subsequent cleaning work, and ensures the sustainability of grouting construction and the quality of on-site construction.
Smart Images

Figure CN224351084U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline grouting construction technology, and in particular to a device for monitoring pipeline grouting venting and fullness. Background Technology
[0002] Cast-in-place beams are one of the most common beam types in building construction. They are often used in areas with larger beam cross-sections, larger spans, and bridge structures with significant changes in linear curves. They are widely used in actual design and application.
[0003] A search revealed Chinese patent CN114395985A, which discloses a venting structure and construction method for grouting prestressed concrete ducts. The venting structure includes a prestressed duct and a venting pipe mounted on it. The venting pipe comprises a head and a rod with an outer diameter smaller than the head and external threads. The rod passes through the prestressed duct from the inside out and is secured to the outside of the duct with a nut. This invention uses a venting pipe with a head and external threads as the venting hole, avoiding the problem of existing bent iron pipes affecting subsequent steel strand installation. It meets the technical requirements for effective venting during prestressed duct grouting, improving construction quality. This invention has the advantages of simple construction operation and reduced construction costs.
[0004] Based on the above search results combined with existing technologies;
[0005] Although the above-mentioned patent search is simple to operate, the sealing at the opening is not tight and the connection is not firm. During the pouring process, the hole is blocked and the slurry is not smooth. Therefore, it cannot fully guarantee the effectiveness of the slurry pipe and the slurry discharge efficiency, and thus has certain limitations. Utility Model Content
[0006] To address the aforementioned technical problems, this utility model proposes a device for grouting venting and fullness monitoring, which can fully ensure the sustainability of pressure maintenance during grouting construction and improve the efficiency of grout discharge.
[0007] The technical solution to achieve the purpose of this utility model is: a device for grouting, venting, and fullness monitoring of pipelines, including a connecting pipe and an venting pipe assembly;
[0008] The inlet is fixedly connected to the top of the connecting pipe;
[0009] The exhaust pipe assembly is disposed on the connecting pipe, and the exhaust pipe assembly includes a plastic connector fixedly mounted on the top of the inlet.
[0010] Preferably, one end of the connecting pipe has a first outlet, and the other end of the connecting pipe has a second outlet.
[0011] Preferably, the inlet is fixedly connected to an exhaust hose via a plastic connector, and a slurry stop valve is fixedly installed at one end of the exhaust hose.
[0012] Compared with existing technologies, the significant advantages of this invention are:
[0013] Firstly, because this utility model has the device set at the highest point of the curved pipe, ensuring that the grout overflows at that point proves that the curved pipe has been fully grouted. The valve design can fully utilize the reliability of its connection to meet the pressure strength requirements of the pressure holding process during grouting.
[0014] Secondly, the grouting material of this utility model can be centrally processed by extending the hose, ensuring the cleanliness of the cast-in-place beam surface, reducing subsequent cleaning and roughening work, and improving the quality of safe and civilized on-site construction.
[0015] This solves the problems of existing construction methods, such as incomplete sealing and weak connection at the opening, blockage during pouring, and poor slurry discharge from the vent pipe, which cannot fully guarantee the effectiveness and slurry discharge efficiency of the vent pipe. Attached Figure Description
[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:
[0017] Figure 1 This is a three-dimensional structural schematic diagram provided by this utility model;
[0018] Figure 2 This is a front structural diagram provided by this utility model;
[0019] Figure 3 This is a side view of the structure provided by this utility model;
[0020] Figure 4 This is a schematic diagram of the connecting pipe structure provided by this utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Connecting pipe; 101. Inlet; 102. First outlet; 103. Second outlet; 2. Exhaust pipe assembly; 201. Plastic connector; 202. Exhaust hose; 3. Slurry stop valve. Detailed Implementation
[0023] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0024] This utility model provides an improved device for grouting, venting, and fullness monitoring in pipelines. The technical solution of this utility model is as follows:
[0025] like Figures 1-4 As shown, a device for venting and monitoring the fullness of grouting in pipelines includes a connecting pipe 1, which is suitable for grouting construction of long prestressed ducts in cast-in-place beams, and also includes a venting pipe assembly 2.
[0026] Inlet 101 is fixedly connected to the top of connecting pipe 1, which effectively improves the efficiency of slurry discharge;
[0027] The exhaust pipe assembly 2 is mounted on the connecting pipe 1. The exhaust pipe assembly 2 includes a plastic connector 201 fixedly installed on the top of the inlet 101, which reduces the drawback of the exhaust pipe extending too far into the corrugated pipe in the traditional connection, which causes the slurry to flow out unevenly.
[0028] Furthermore, one end of the connecting pipe 1 is provided with a first outlet 102, and the other end of the connecting pipe 1 is provided with a second outlet 103. By utilizing the integrity of the inlet and outlet of the connecting pipe 1 tee, the drilling steps in the traditional connection process are reduced, and the probability of grout blockage in the pipeline during pouring construction is lowered.
[0029] Furthermore, the inlet 101 is fixedly connected to an exhaust hose 202 via a plastic connector 201. A grout stop valve 3 is fixedly installed at one end of the exhaust hose 202. The grout stop valve 3 at the end of the exhaust hose 202 effectively controls the venting and grout stop during the construction process, thereby improving the quality of safe and civilized construction on site.
[0030] The specific working method is as follows: The device is installed at the highest point of the prestressed duct curve according to the design drawings. The inlet 101 and the first outlet 102 of the connecting pipe 1 are connected to the connecting pipe 1 using their own spiral structure. The second outlet 103 is connected and fixed to the exhaust hose 202 through the plastic connector 201. During the grouting construction process, the exhaust and grouting are controlled by opening and closing the grouting stop valve 3. That is, the grouting stop valve 3 is opened before grouting to ensure that the air in the pipe is removed during the grouting process. After the grouting material of the same concentration as the grouting material flows out of the grout outlet of the cast-in-place beam, the valve of the grout outlet is closed, and grouting continues through the grouting outlet. After the grouting material of the same concentration overflows from the exhaust hose 202 of the device, the grouting stop valve 3 is closed to maintain pressure. Since the device is set at the highest point of the curved duct, ensuring that the grouting material overflows at this point proves that the curved duct has been fully grouted.
[0031] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.
Claims
1. A device for grouting, venting, and fullness monitoring of pipelines, comprising a connecting pipe (1), characterized in that: Also includes; Inlet (101), which is fixedly connected to the top of the connecting pipe (1); An exhaust pipe assembly (2) is disposed on a connecting pipe (1) and includes a plastic connector (201) fixedly mounted on the top of an inlet (101).
2. The device for monitoring grouting, venting, and fullness of a pipeline according to claim 1, characterized in that: One end of the connecting pipe (1) is provided with a first outlet (102), and the other end of the connecting pipe (1) is provided with a second outlet (103).
3. The device for monitoring grouting, venting, and fullness of pipelines according to claim 1, characterized in that: The inlet (101) is fixedly connected to an exhaust hose (202) via a plastic connector (201), and a slurry stop valve (3) is fixedly installed at one end of the exhaust hose (202).