CN204418160U - Parallel vacuum precompressed pumped vacuum systems - Google Patents

Abstract

The utility model discloses a parallel-connected vacuum preloading vacuum system, which comprises an air pumping device, a water pumping device, a main pipe for pumping air connected with the pumping device, connected with the water pumping device and arranged on the main pipe for pumping air. The suction main pipe below also includes a plurality of suction branch pipes which are respectively communicated with the suction main pipes, and a plurality of the suction branch pipes are respectively one-to-one corresponding to the suction branch pipes and arranged below the suction branch pipes and connected to the suction main pipes. The connected main pump and the suction hole of the filter pipe network are connected with outlet pipes, and the outlet pipes are connected to the suction branch pipe and the water suction branch pipe through the three-way pipe. The vacuum pumping system of the utility model adopts a centralized parallel arrangement, so that the gas and liquid extracted from the filter pipe network enter the air pumping branch pipe and the water pumping branch pipe respectively, and finally merge into the air pumping main pipe and the water pumping main pipe for processing respectively.

Description

Parallel vacuum preloading vacuum system

technical field

The utility model relates to the technical field of vacuum preloading, in particular to a parallel vacuum preloading and vacuuming system.

Background technique

Vacuum preloading technology is a construction technology widely used in coastal and inland river land reclamation. This technology can treat the dredging mud layer and the bottom undisturbed mud within the design depth to a bearing capacity of not less than 80Kpa in a relatively short period of time. In this way, a land base with high carrying capacity is formed, and the investment in building foundation treatment is greatly reduced.

At present, domestic vacuum preloading and vacuuming operations are still basically decentralized, that is, one air hole is set every 800-1200 square meters on the filter pipe network, and each air hole corresponds to a vacuum jet pump. However, this decentralized vacuuming operation There are the following deficiencies: (1) The energy efficiency of small equipment cluster operation is low; (2) The technical content of the equipment is low and the quantity is difficult to upgrade; (3) The input equipment is huge and the maintenance workload is heavy.

Utility model content

The purpose of the utility model is to provide a parallel vacuum pre-pressing and vacuuming system aiming at the technical defects existing in the prior art.

The technical scheme adopted for realizing the purpose of this utility model is:

A parallel vacuum preloading vacuum system, comprising an air pumping device, a water pumping device, an air pumping main pipe connected to the air pumping device, a water pumping main pipe connected to the water pumping device and arranged below the air pumping main pipe, It also includes a plurality of suction branch pipes communicating with the main suction main pipes, a plurality of main water suction pipes respectively corresponding to the branch suction pipes and arranged under the branch suction pipes and communicating with the main water suction pipes, The air extraction holes of the filter pipe network are connected with outlet pipes, and the outlet pipes are connected to the air extraction branch pipe and the water extraction branch pipe through the three-way pipe.

The outlet pipe is an elbow, and the highest point of the elbow is higher than the three-way pipe.

The three-way pipe is a T-shaped three-way pipe.

The straight pipe connecting the T-shaped tee pipe and the outlet pipe is provided with a water guiding plate extending forward at the bypass opening, and an air passage is reserved between the water guiding plate and the bypass opening.

The water suction branch pipe and the air suction branch pipe are respectively fixedly arranged on the pipe support, and the air suction branch pipe is positioned and supported by a slant plate maintaining an angle with the support.

The vacuum pumping device and the water pumping device are respectively jet vacuum pumps.

Compared with the prior art, the beneficial effects of the utility model are:

The vacuum pumping system of the utility model adopts a centralized parallel arrangement, and a vacuum pumping device and a water pumping device are respectively installed, and then the pipe network constructed by the main pumping pipe, the main pipe, the branch pipe and the branch pipe is connected to each pumping hole, and at the same time, Use the elbow design and the tee to separate the gas and liquid at the air extraction hole, so that the gas and liquid extracted from the filter network enter the air extraction branch pipe and the water extraction branch pipe respectively, and finally flow into the main air extraction main pipe and the water main pipe for treatment respectively. When it comes out, the steam-water separation is carried out, so that the vacuum pressure transmission medium in the main pipe and the branch pipe of the suction pipe is converted from a water-gas mixture into an approximately pure gas, and the vacuum pressure loss caused by the friction resistance of the pipe per unit length is greatly reduced, and the vacuum pressure is used for centralized transmission. Effectively change the operation mode of connecting one jet vacuum pump with one air extraction hole commonly used at present, so as to greatly improve energy efficiency and reduce engineering cost.

Description of drawings

Fig. 1 shows the structural representation of the parallel vacuum preloading and vacuuming system of the present utility model;

Figure 2 shows a schematic diagram of the connection of the outlet tube.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figures 1 and 2, the parallel-connected vacuum preloading vacuum pumping system of the present utility model includes an air pumping device 1, a water pumping device 2, an air pumping main pipe 3 communicated with the air pumping device 1, and the pumping water pump The device 2 communicates with and is arranged on the suction main pipe 4 below the main air extraction main pipe, and also includes a plurality of air extraction branch pipes 5 respectively communicating with the main air extraction main pipes, and a plurality of the air extraction branch pipes 5 are respectively one-to-one corresponding and arranged The pumping main pipe 6 below the suction branch pipe and communicated with the pumping main pipe, the suction hole 11 of the filter pipe network 10 is connected with the outlet pipe 7, and the end of the outlet pipe is provided with a three-way pipe 8, and the three-way The other two ports of the through pipe are connected to the suction branch pipe 5 and the water suction branch pipe 6 respectively. Wherein, the branch pipes for water extraction, branch pipes for air extraction, main pipes for air extraction and main pipes for pumping water are respectively fixed on a plurality of pipe supports 9, and the branch pipes for air extraction are positioned and supported by slant plates 12 that maintain an angle with the supports. , using inclined plate clamping positioning, easy to erect and easy to disassemble later, wherein, the outlet pipe is an elbow with a bend in the vertical plane, and the highest point of the elbow is higher than the tee pipe 8, With the bending design, the soda-water mixture can be preliminarily separated after being bent, and then separated again after entering the three-way pipe. Using this system for vacuuming operations can use large-scale equipment with high energy efficiency and high technology content, which can greatly reduce the maintenance workload during construction and reduce the project cost.

The vacuum pumping system of the utility model adopts a centralized parallel arrangement, and a vacuum pumping device and a water pumping device are respectively provided, that is, two jet vacuum pumps respectively, and two sets are provided in total, one of which is mainly used for pumping and draining water, and the water output in the early stage of vacuum preloading is relatively small. Large, with the reduction of the water output in the later stage, it can also serve as the pumping function, and the other set is mainly used for pumping. , which can effectively improve the treatment effect, and then connect to each suction hole through the pipe network constructed by the main pump, the main pump, the branch pipe and the branch pipe. Separation, so that the gas and liquid extracted from the filter pipe network enter the air extraction branch pipe and the water extraction branch pipe respectively, and finally merge into the main air extraction main pipe and the main water pumping pipe for treatment respectively. The vacuum pressure transmission medium in the tube is converted from a water-gas mixture into an approximate pure gas, and the vacuum pressure loss caused by the friction resistance of the pipeline per unit length is greatly reduced, and the centralized transmission of vacuum pressure is adopted, which effectively changes the current commonly used air extraction hole to connect a jet. The operation mode of the vacuum pump can greatly improve energy efficiency and reduce engineering costs.

Preferably, the three-way pipe is a T-shaped three-way pipe, and the port located on the same straight pipe as the inlet end of the outlet pipe communicates with the suction branch pipe, and the opposite bypass port is connected to the suction branch pipe. Inertia can further realize the separation of steam and water at the tee pipe.

At the same time, in order to improve the effect of gas-liquid separation, the straight pipe connecting the T-shaped tee pipe and the outlet pipe is provided with a water guide plate extending forward at the bypass port, that is, the water guide plate is automatically Extending from the connection end of the outlet pipe to the connection end of the drainage branch pipe and the tail part is fixedly connected with the connection pipe of the outlet pipe. The water guide plate is in the shape of a semicircle and extends until the bypass port is closed, that is, the water guide plate There is a predetermined airway between the bypass port and the bypass port. Of course, the water guide plate can also be extended downwards, that is, as it extends to the connecting end of the water branch pipe, the farther it is from the bypass port, this can effectively increase the probability of water entering the lower water branch pipe, and avoid into the suction manifold.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the present utility model.

Claims (6)

1. A parallel vacuum preloading vacuum system, characterized in that it comprises an air pumping device, a water pumping device, an air pumping main pipe communicated with the air pumping device, communicated with the water pumping device and arranged on the air pumping device The main pipe for pumping water under the main pipe also includes a plurality of branch pipes communicating with the main pipes for pumping water, each of which corresponds to the branch pipes for suction and is arranged under the branch pipes for pumping water. The pumping main pipe connected with the main pipe and the suction hole of the filter pipe network are connected with an outlet pipe, and the outlet pipe is connected to the air suction branch pipe and the water suction branch pipe through the three-way pipe. 2. The parallel vacuum preloading and evacuation system according to claim 1, wherein the outlet pipe is an elbow, and the highest point of the elbow is higher than the three-way pipe. 3. The parallel vacuum preloading and evacuation system according to claim 1, wherein said three-way pipe is a T-shaped three-way pipe. 4. The parallel vacuum preloading vacuum system according to claim 3, characterized in that, the straight pipe connecting the T-shaped tee pipe and the outlet pipe is provided with a forward extension at the bypass port. A water guide plate, an air passage is reserved between the water guide plate and the bypass port. 5. The parallel-connected vacuum preloading and evacuation system according to claim 4, characterized in that, the water pumping branch pipe and the air pumping branch pipe are respectively fixedly arranged on the pipe support, and the described air pumping branch pipe is connected with the described air pumping branch pipe. The bracket maintains the slant plate positioning support at the included angle. 6. The parallel vacuum preloading and vacuuming system according to claim 1, characterized in that, the vacuum pumping device and the water pumping device are respectively jet vacuum pumps.