Shield launching end multi-pass converter under water-rich sand layer condition

Abstract

The utility model belongs to the technical field of converters, particularly relates to a multi-pass converter for a shield starting end under the condition of a water-rich sand layer, and aims to solve the problems that grouting equipment is connected with a grouting hole for direct grouting in the grouting sealing of the existing shield starting end, and the grouting condition cannot be monitored in real time; in order to solve the problem that the risk cannot be controlled in time due to the fact that grouting uniformity cannot be guaranteed and the grouting efficiency of different positions cannot be controlled in real time, the following scheme is provided: the device comprises a starting tunnel portal, two corresponding extension steel rings sleeve the outer side of the starting tunnel portal, and a connecting plate is fixedly mounted between the two extension steel rings; a plurality of groups of injection holes are fixedly formed in the surface of the connecting plate, one end of each injection hole penetrates through the connecting plate and is communicated with the starting tunnel portal, the other end of each injection hole is fixedly connected with a grease injection pipeline, and the other end of each grease pipeline is fixedly connected with a multi-pass converter. According to the utility model, through constant-pressure multi-path distribution of one pipeline, normal injection of each path is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a multi-pass converter, in particular to a shield starting end multi-pass converter under water-rich sand layer conditions, belongs to converter technical field. BACKGROUND

[0002] Shield starting and receiving is one of major risk sources in rail transit engineering, starting hole door sealing forms diversification development, and it is especially important to ensure sealing effect, especially in water-rich sand layer stratum, once starting hole door is sealed badly, it is easy to cause hole door gushing water and sand, and major economic loss and social influence occur, therefore, it has become an important measure to guarantee starting safety to effectively further strengthen starting hole door sealing effect and hole door rapid plugging.

[0003] And in the prior art, such as the shield starting double-channel sealing device disclosed in the announcement No. CN213039282U, it is also a rail transit shield device, the two rubber curtain boards, the steel ring, the flap and the shield machine shell form a sealing cavity through the steel ring, the grease filling hole distributed at the steel ring, the grease filling pipe connected with the grease filling hole and the grease injection system, and when starting, the grease is injected into the sealing cavity through the grease filling hole, so that the sealing effect is better, wherein, through the setting of the grease injection system, the sealing grease can be injected into the sealing cavity better, and the operation is simple and convenient

[0004] But in the process of using the above scheme, since the grease injection system is directly connected with the grease filling equipment, the grouting situation cannot be monitored in real time, the grouting uniformity cannot be ensured, the grouting efficiency at different positions cannot be controlled in real time, and the risk cannot be controlled in time, therefore, the shield starting end multi-pass converter under water-rich sand layer conditions is provided to overcome the above defects. UTILITY MODEL CONTENTS

[0005] The utility model provides a shield starting end multi-pass converter under water-rich sand layer conditions to solve the problem that the grease injection system is directly connected with the grease filling equipment in the process of using the above scheme, the grouting situation cannot be monitored in real time, the grouting uniformity cannot be ensured, and the grouting efficiency at different positions cannot be controlled in real time, and the risk cannot be controlled in time.

[0006] The utility model realizes the above-mentioned purpose through the following technical scheme: a shield starting end multi-pass converter under water-rich sand layer conditions, including starting hole door, the outside of starting hole door is equipped with two corresponding extension steel rings, the middle of two extension steel rings is fixedly installed with connecting plate, the surface of connecting plate is fixedly installed with multiple injection holes;

[0007] One end of the injection hole passes through the connecting plate and is connected to the starting hole. The other end of the injection hole is fixedly connected to a grease pipe, and the other end of the grease pipe is fixedly connected to a multi-port converter.

[0008] The multi-channel converter includes a grease pipeline connection end, which is provided in multiple sets. A grouting transfer chamber is welded to the end of the grease pipeline connection end away from the grease pipeline, and an on / off ball valve is fixedly installed inside the grease pipeline connection end. A pressure sensor is provided on one side of the on / off ball valve.

[0009] As a further improvement of this utility model, the pressure sensor of the multi-channel converter is electrically connected to the pressure transmission monitoring terminal inside the grouting transfer chamber.

[0010] As a further improvement of this utility model: one end of the grouting transfer chamber is fixedly connected to the grouting machine connection port, and a pressure transmission monitoring terminal is fixedly installed above the grouting machine connection port.

[0011] As a further improvement of this utility model, the grease pipeline connection end is welded to the grouting transfer chamber.

[0012] As a further improvement of this utility model, the pressure transmission monitoring terminal and the pressure sensor of the multi-channel converter are electrically connected.

[0013] As a further improvement of this utility model: two sets of filter plates are fixedly installed inside the grouting machine connection port, a connecting rod is fixedly installed in the middle of the filter plates, and multiple sets of fan blades are sleeved on the outside of the connecting rod.

[0014] As a further improvement of this utility model, the fan blades are rotatably mounted on the outside of the connecting rod.

[0015] The beneficial effects of this utility model are:

[0016] 1. By using a single pipeline, multiple pipelines can be evenly and constantly distributed under constant pressure, ensuring normal injection in each pipeline. It also allows for free switching between comprehensive injection in multiple pipelines and selective local injection, which is convenient, fast, and has a high safety factor. Each branch pipeline is equipped with a switch-type ball valve for effective single-point injection and rapid local sealing to prevent risks from occurring.

[0017] 2. The grease pipeline is connected to the tail section of the tunnel boring machine via the grouting machine's connection port, allowing for easy directional switching and effectively improving the efficiency of grease injection. This ensures timely risk control. Furthermore, the grease pipeline connection is welded to the grouting transfer chamber, allowing for customization based on the number of branch lines. This significantly improves the efficiency of production, and the materials used can be selected according to actual needs, free from market constraints. The cost is low, and the materials are reusable.

[0018] 3. The grouting transfer chamber is welded to the connection ends of eight grease pipelines. Each of the eight grease pipelines is connected to one of the eight injection holes on an extended steel ring. The pressure sensors built into the connection ends of the grease pipelines can monitor the grease input efficiency of each pipeline in real time. Each of the eight grease pipelines is equipped with a switch-type ball valve. The grease input speed is adjusted according to the grease pressure of each pipeline. The end of the transfer chamber is equipped with a pressure transmission monitoring terminal, which can directly observe the grouting pressure of the eight pipelines. The operation is simple, convenient and quick, with high injection efficiency and high sealing efficiency. Attached Figure Description

[0019] Fig. 1 This is a three-dimensional structural diagram of the present invention;

[0020] Fig. 2 This is a schematic diagram of the structure of the multi-pass converter of this utility model;

[0021] Fig. 3 This is a schematic diagram of the internal structure of the multi-pass converter of this utility model;

[0022] Fig. 4 This is a schematic diagram of the side structure of the grouting transfer chamber of this utility model.

[0023] In the diagram: 1. Starting tunnel portal; 2. Extension steel ring; 3. Connecting plate; 4. Injection hole; 5. Grease pipeline; 6. Multi-port converter; 7. Grease pipeline connection end; 8. Grouting transfer chamber; 9. Switch-type ball valve; 10. Pressure sensor; 11. Grouting machine connection port; 12. Pressure transmission monitoring terminal; 13. Filter plate; 14. Connecting rod; 15. Fan blade. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] likeFigs. 1 to 4 As shown, a multi-channel converter for the starting end of a shield tunnel under water-rich sandy conditions includes a starting portal 1. Two corresponding extended steel rings 2 are sleeved on the outside of the starting portal 1. A connecting plate 3 is fixedly installed in the middle of the two extended steel rings 2. Multiple sets of injection holes 4 are fixedly installed on the surface of the connecting plate 3.

[0027] One end of the injection hole 4 passes through the connecting plate 3 and is connected to the starting hole 1. The other end of the injection hole 4 is fixedly connected to the grease pipe 5, and the other end of the grease pipe 5 is fixedly connected to the multi-port converter 6.

[0028] The multi-channel converter 6 includes a grease pipe connection end 7, which is provided with multiple sets. A grouting transfer chamber 8 is welded to the end of the grease pipe connection end 7 away from the grease pipe 5. An on / off ball valve 9 is fixedly installed inside the grease pipe connection end 7, and a pressure sensor 10 is provided on one side of the on / off ball valve 9.

[0029] As a further improvement of this utility model, the pressure sensor 10 is fixedly installed inside the grease pipeline connection end 7.

[0030] Example 2

[0031] In addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0032] As a further improvement of this utility model: one end of the grouting transfer chamber 8 is fixedly connected to the grouting machine connection port 11, and a pressure transmission monitoring terminal 12 is fixedly installed above the grouting machine connection port 11. The pressure transmission monitoring terminal 12 can directly observe the grouting pressure of the eight pipelines.

[0033] As a further improvement of this utility model, the grease pipe connection end 7 is welded to the grouting transfer chamber 8, and the grease pipe connection end 7 is connected to the shield tail pipe on the shield equipment through the grouting machine connection port 11, so that the direction can be switched at any time.

[0034] As a further improvement of this utility model, the pressure sensor 10 of the multi-channel converter 6 is electrically connected to the pressure transmission monitoring terminal 12 inside the grouting transfer chamber 8. The pressure sensor 10 can effectively improve the efficiency of grease injection and ensure that risks can be controlled in a timely manner.

[0035] As a further embodiment of this utility model: two sets of filter plates 13 are fixedly installed inside the grouting machine connection port 11, a connecting rod 14 is fixedly installed in the middle of the filter plate 13, and multiple sets of fan blades 15 are sleeved on the outside of the connecting rod 14. The filter plate 13 can fix the position of the connecting rod 14 and break up and fuse the grout during grouting through the fan blades 15.

[0036] As a further embodiment of this utility model, the fan blade 15 is rotatably mounted on the outside of the connecting rod 14, which can inject and fuse the injected slurry.

[0037] Working Principle: During use, the grease pipeline connection end 7 is welded to the grouting transfer chamber 8 according to the required number of branch lines. The same number of injection holes 4 are drilled on the connecting plate 3, forming a connection with the starting tunnel portal 1. Then, the grease pipeline 5 is connected to the grease pipeline connection end 7. Next, the grouting machine connection port 11 is connected to the grouting equipment. The grouting equipment is then turned on, and the grouting equipment injects grout into the grouting transfer chamber 8 through the grouting machine connection port 11. The grease pipeline connection end 7 is connected to the shield tail pipeline on the tunnel boring machine through the grouting machine connection port 11, allowing for direction switching at any time. This effectively improves the efficiency of grease injection and ensures timely risk control. During this process, the pressure transmission monitoring terminal 12 can directly observe the grouting pressure of the eight pipelines. The system operates under pressure conditions and is connected to eight grease pipelines 5 via a grouting transfer chamber 8. Each of the eight grease pipelines 5 is connected to one of eight injection holes 4 on an extended steel ring 2. The grease pipeline connection end 7 has a built-in pressure sensor 10 that can monitor the grease input efficiency of each pipeline in real time. Each of the eight grease pipelines 5 is equipped with a switch-type ball valve 9. The grease input speed is adjusted according to the grease pressure of each pipeline. Finally, the shield tunneling starting multi-channel converter 6 uses one pipeline to distribute the pressure evenly across multiple pipelines, ensuring normal injection in each pipeline. It can freely switch between comprehensive injection and selective local injection, which is convenient, fast, and has a high safety factor. Each branch pipeline is equipped with a switch-type ball valve 9 to effectively perform single-point injection and can quickly seal off local areas to prevent risks.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-channel converter for the starting end of a shield tunnel under water-rich sandy conditions, comprising a starting portal (1), characterized in that: The outer side of the starting portal (1) is fitted with two corresponding extended steel rings (2), and a connecting plate (3) is fixedly installed in the middle of the two extended steel rings (2). Multiple sets of injection holes (4) are fixedly installed on the surface of the connecting plate (3). One end of the injection hole (4) passes through the connecting plate (3) and is connected to the starting hole (1). The other end of the injection hole (4) is fixedly connected to the grease pipe (5), and the other end of the grease pipe (5) is fixedly connected to the multi-channel converter (6). The multi-channel converter (6) includes a grease pipeline connection end (7), which is provided in multiple sets. A grouting transfer chamber (8) is welded to the end of the grease pipeline connection end (7) away from the grease pipeline (5). A switch-type ball valve (9) is fixedly installed inside the grease pipeline connection end (7), and a pressure sensor (10) is provided on one side of the switch-type ball valve (9).

2. The multi-channel converter at the starting end of a shield tunneling machine under water-rich sandy conditions according to claim 1, characterized in that: The pressure sensor (10) is fixedly installed inside the grease pipeline connection end (7).

3. The shield tunneling starting end multi-channel converter according to claim 1, characterized in that: One end of the grouting transfer chamber (8) is fixedly connected to the grouting machine connection port (11), and a pressure transmission monitoring terminal (12) is fixedly installed above the grouting machine connection port (11).

4. A multi-channel converter for the starting end of a shield tunneling machine under water-rich sandy conditions as described in claim 1, characterized in that: The oil pipeline connection end (7) is welded to the grouting transfer chamber (8).

5. A multi-channel converter for the starting end of a shield tunneling machine under water-rich sandy conditions as described in claim 1, characterized in that: The pressure sensor (10) of the multi-channel converter (6) is electrically connected to the pressure transmission monitoring terminal (12) inside the grouting transfer chamber (8).

6. A multi-channel converter for the starting end of a shield tunneling machine under water-rich sandy conditions as described in claim 3, characterized in that: Two sets of filter plates (13) are fixedly installed inside the grouting machine connection port (11). A connecting rod (14) is fixedly installed in the middle of the filter plate (13), and multiple sets of fan blades (15) are sleeved on the outside of the connecting rod (14).

7. A multi-channel converter for the starting end of a shield tunneling machine under water-rich sandy conditions as described in claim 6, characterized in that: The fan blade (15) is rotatably mounted on the outside of the connecting rod (14).

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