Pressure-stabilizing grouting device for steel lining contact grouting

Abstract

A pressure-stabilizing grouting device for steel lining contact grouting belongs to the technical field of water conservancy and hydropower engineering construction and comprises a pressure-stabilizing tank with a slurry inlet funnel, the top of the pressure-stabilizing tank is communicated with an air compressor through a communication hose, a slurry outlet is formed in the side wall of the bottom of the pressure-stabilizing tank, a grouting pipe is connected to the slurry outlet, and the pressure-stabilizing tank is communicated with the air compressor. The other end of the grouting pipe is connected with a steel lining hole opening, and the top of the pressure stabilizing tank is further communicated with an exhaust ball valve and a grouting pressure gauge. In the grouting process, the grouting pressure is stable, the grouting quality can be effectively guaranteed, and the steel lining is prevented from being lifted and deformed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of water conservancy and hydropower engineering construction, and relates to a grouting device, in particular to a steady pressure grouting device for steel lining contact grouting. BACKGROUND

[0002] In the past steel lining contact grouting process of hydropower station, the plunger mechanical reciprocating movement of grouting pump is generally used to pressurize and grout, the pressure in the grouting process is not easy to control accurately, and the grouting pressure deviation is large. Since the design pressure of steel lining contact grouting is small, the pressure control is not stable, which can affect the quality of steel lining contact grouting and easily cause the deformation of steel lining.

[0003] The construction quality hidden danger above brings certain risk to the safe and stable operation of the steel lining of the pressure pipeline and the flood discharge flow channel of the power station in the later period, and brings immeasurable loss to the power station. Therefore, in order to solve this problem, the utility model provides a steady pressure grouting device for steel lining contact grouting. SUMMARY

[0004] In view of the above-mentioned defects of the prior art, the utility model aims at providing a steady pressure grouting device for steel lining contact grouting, which is used to solve the technical problem that the pressure control is unstable in the steel lining contact grouting of the prior art, the pressure deviation is large, and the grouting quality is affected.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a steady pressure grouting device for steel lining contact grouting, which comprises a steady pressure tank with a plunger feeding hopper, the top of the steady pressure tank is connected with an air compressor through a communication hose, the bottom side wall of the steady pressure tank is provided with a grout outlet, the grout outlet is connected with a grouting pipe, the other end of the grouting pipe is connected with a steel lining orifice, and the top of the steady pressure tank is further connected with an exhaust ball valve and a grouting pressure gauge.

[0006] Preferably, the outlet end of the air compressor is provided with a pressure gauge and an adjusting switch.

[0007] Preferably, the communication hose is provided with a deflation valve.

[0008] Preferably, the plunger feeding hopper is arranged at the top center of the steady pressure tank, and the discharge port of the plunger feeding hopper is provided with a plunger ball valve.

[0009] Preferably, the plunger feeding hopper is welded to the top center of the steady pressure tank.

[0010] Preferably, the two ends of the grouting pipe are respectively provided with a grouting ball valve and a plunger closing ball valve, the grouting ball valve is arranged at the grout outlet end, and the plunger closing ball valve is arranged at the steel lining orifice end.

[0011] Preferably in any of the above solutions, the air compressor and the pressure stabilizing tank are each provided with universal wheels.

[0012] As described above, the utility model discloses a kind of steel lining contact grouting pressure stabilizing device, with the following beneficial effects:

[0013] 1, in the utility model, the size of air compressor supply pressure is adjusted to transmit pressure to cement slurry in pressure stabilizing tank, and slurry is transported to steel lining cavity gap by compressed air pressure, since cement slurry and compressed air comply with the principle of communicating vessel, so grouting pressure and air compressor pressure are basically same. Grouting pressure can be accurately controlled and kept stable, therefore, improve the pressure stability, very beneficial to guarantee grouting quality, prevent steel lining lifting deformation.

[0014] 2, in the utility model, device is small, easy to move, beneficial to shorten grouting pipeline, beneficial to on-site construction personnel operation, facilitate construction in narrow closed space.

[0015] 3, in the utility model, cement slurry can be according to on-site situation, need to grout how much to mix how much, reduce waste, device flush is convenient, save water, environmental protection, device comprehensive energy consumption is low. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It shows the structure diagram of the utility model.

[0017] Fig. 2 It shows the air compressor amplification schematic diagram.

[0018] Fig. 3 It shows the amplification schematic diagram of pressure stabilizing tank.

[0019] ELEMENT NUMBER EXPLANATION

[0020] 1-pressure stabilizing tank, 2-into slurry hopper, 3-communicating hose, 4-air compressor, 5-out slurry port, 6-grouting pipe, 7-steel lining hole, 8-exhaust ball valve, 9-grouting pressure gauge, 10-pressure gauge, 11-regulating switch, 12-bleed valve, 13-into slurry ball valve, 14-grouting ball valve, 15-closed slurry ball valve, 16-universal wheel, 17-concrete, 18-steel lining. DETAILED DESCRIPTION

[0021] The following specific embodiment illustrates the embodiment of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the content disclosed in the specification.

[0022] Please refer to Figs. 1-3It is to be understood that the structure, proportion, size and the like shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation of the utility model, so they do not have the technical essence, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose of the utility model, should still fall within the scope of the technical content disclosed by the utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model, the change or adjustment of relative relationship is also regarded as the scope of the utility model.

[0023] Please refer to Figs. 1-3 The utility model provides a kind of steel lining contact grouting's pressure stabilizing grouting device, including the pressure stabilizing tank 1 with inlet funnel 2, the top of pressure stabilizing tank 1 is connected with air compressor 4 by communicating hose 3, the bottom side wall of pressure stabilizing tank 1 is equipped with grout outlet 5, grout outlet 5 is connected with grouting pipe 6, another end of grouting pipe 6 is connected with steel lining orifice 7, the top of pressure stabilizing tank 1 is also connected with exhaust ball valve 8 and grouting pressure gauge 9.

[0024] In use, to solve the problem that pressure is not easy to control accurately in the process of steel lining contact grouting in the prior art, grouting pressure deviation is large, thereby affecting the quality of steel lining contact grouting, easy to cause steel lining lifting deformation, and further bring certain risk to the safe and stable movement of steel lining of pressure pipeline and flood discharge channel of power station in later period, and bring immeasurable loss to power station, a kind of steel lining contact grouting device of pressure stabilizing grouting is provided in the embodiment. Specifically, small air pressure is used to provide stable pressure connected with pressure stabilizing tank 1 to carry out steel lining contact grouting. That is, in the process of grouting, air pressure is delivered to pressure stabilizing tank 1 by air compressor 4 through communicating hose 3 to store pressure, when the pressure in pressure stabilizing tank 1 reaches the design pressure, open pressure stabilizing tank 1, cement slurry is discharged through grout outlet 5 under the pushing action of air pressure, and enters steel lining orifice 7 through grouting pipe 6, and is pressed into the crack between steel lining 18 and concrete 17 through steel lining orifice 7 to complete the steel lining 18 contact grouting work. In the whole process, the slurry is delivered to the cavity gap of steel lining by compressed air pressure, since the cement slurry and compressed air comply with the principle of communicating vessel, so the grouting pressure and air compressor 4 pressure are basically the same. Grouting pressure can be accurately controlled and kept stable. In this way, the pressure stability is improved, which is very beneficial to ensure the grouting quality and prevent lifting deformation.

[0025] In the embodiment, the air compressor 4 is provided with an adjusting switch 11 connected with the air compressor 4, the pressure of the air compressor 4 can be adjusted through the adjusting switch 11, so that the grouting pressure can be accurately controlled and kept stable, thereby improving the stability of the pressure and ensuring the grouting quality.

[0026] In the embodiment, the outlet end of the air compressor 4 is provided with a pressure gauge 10, so that the staff can observe the pressure in the air compressor 4, thereby facilitating the adjustment of the air pressure of the air compressor 4 according to the needs.

[0027] In the embodiment, the pressure tank 1 adopts a tank body capable of bearing a pressure of 1.5 MPa.

[0028] In the embodiment, the exhaust ball valve 8 adopts a 50 ball valve, which is convenient for air closing and pressure rising and air exhaust and pressure reduction.

[0029] In the embodiment, the pressure gauge 10 on the air compressor 4 and the grouting pressure gauge 9 on the pressure tank 1 both adopt a 2.5 level precision pressure gauge 10.

[0030] As a further description of the above embodiment, the communication hose 3 is provided with a deflation valve 12.

[0031] When the embodiment is used, the deflation valve 12 is convenient for controlling the exhaust condition of the air compressor 4 and facilitates the operation.

[0032] As a further description of the above embodiment, the grouting hopper 2 is welded and arranged at the top center of the pressure tank 1, and the grouting hopper 2 is provided with a grouting ball valve 13 at the discharge port.

[0033] When the embodiment is used, the grouting hopper 2 is convenient for adding cement slurry into the pressure tank 1, re-performing another grouting process until the cavity is full, thereby achieving the purpose of facilitating feeding, reducing labor, and improving work efficiency.

[0034] In the embodiment, the grouting ball valve 13 is convenient for controlling the grouting condition and improving the convenience of grouting operation.

[0035] As a further description of the above embodiment, the grouting pipe 6 is provided with a grouting ball valve 14 and a closing ball valve 15 at two ends respectively, the grouting ball valve 14 is arranged at the slurry outlet 5, and the closing ball valve 15 is arranged at the steel lining hole 7.

[0036] When the embodiment is used, the grouting ball valve 14 and the closing ball valve 15 are convenient for controlling the grouting condition and improving the convenience of grouting operation.

[0037] As a further description of the above embodiment, the air compressor 4 and the bottom of the pressure tank 1 are both provided with universal wheels 16.

[0038] In use of the embodiment, in order to facilitate the device to move on site, facilitate construction, universal wheels 16 with brakes are installed at the bottom of the air compressor 4 and the pressure stabilizing tank 1. The connection mode between the universal wheels 16 and the air compressor 4 and the pressure stabilizing tank 1 is prior art, and those skilled in the art can know it according to the prior art, so the embodiment will not be further described.

[0039] In summary, the working process of the utility model is as follows:

[0040] 1. After the air is stored to the design grouting pressure in the air compressor 4, the air release valve 12 is opened, and the air enters the pressure stabilizing tank 1 through the connecting hose 3; the air is stored in the pressure stabilizing tank 1, and after reaching the design pressure, the grouting ball valve 14 at the lower part of the pressure stabilizing tank 1 is opened, and the cement slurry is transmitted to the cement slurry under the action of air pressure, and the cement slurry is pressed into the crack between the steel lining 18 and the concrete 17 through the grouting pipe 6 under the action of pressure, and the steel lining 18 contact grouting work is completed.

[0041] 2. During the grouting process, the air is ensured not to be pressed into the crack by the knocking method, and when the slurry is almost pressed, the air release valve 12 is closed, the air release ball valve 8 is opened, the cement slurry is added again through the grouting hopper 2, and another grouting process is carried out again until the cavity is full.

[0042] In summary, the grouting pressure is stable during the grouting process in the utility model, which can effectively guarantee the grouting quality and prevent the steel lining from lifting and deforming. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0043] The above embodiment only exemplarily illustrates the principle and effect of the utility model, and is not used to limit the utility model. Any person skilled in the art can modify or change the above embodiment without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A steel-lined contact grouting pressure stabilizing grouting device, characterized by: The utility model relates to a grouting device, including the steady pressure tank (1) of the paddle funnel (2), the top of steady pressure tank (1) is communicated with air compressor (4) through the communication hose (3), the bottom side wall of steady pressure tank (1) is equipped with the grout outlet (5), the grout outlet (5) is connected with grouting pipe (6), the other end of grouting pipe (6) is connected with steel lining orifice (7), the top of steady pressure tank (1) is still communicated with exhaust ball valve (8) and grouting pressure gauge (9).

2. The steel-lined pressure-maintained grouting device of claim 1, wherein: The outlet end of the air compressor (4) is provided with a pressure gauge (10) and an adjusting switch (11).

3. The steel-lined pressure-maintaining and grouting device for contact grouting according to claim 1, characterized in that: The communication hose (3) is provided with a deflation valve (12).

4. The steel-lined pressure-maintaining and grouting device for contact grouting according to claim 1, characterized in that: The paddle funnel (2) is arranged at the top center of the steady pressure tank (1), and a paddle ball valve (13) is arranged at the discharge port of the paddle funnel (2).

5. The steel-lined pressure-maintaining contact grouting device according to claim 4, characterized in that: The paddle funnel (2) is welded to the top center of the steady pressure tank (1).

6. The steel-lined pressure-maintaining and grouting device for contact grouting according to claim 1, characterized in that: The grouting pipe (6) is provided with a grouting ball valve (14) and a closed paddle ball valve (15) at two ends respectively, the grouting ball valve (14) is arranged at the grout outlet (5) end, and the closed paddle ball valve (15) is arranged at the steel lining orifice (7) end.

7. The steel-lined pressure-maintaining and grouting device for contact grouting according to claim 1, characterized in that: The air compressor (4) and the bottom of the steady pressure tank (1) are both provided with universal wheels (16).

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