CN210152653U

CN210152653U - Leakage-proof type refrigerating device with flow direction switching function for freezing method construction

Info

Publication number: CN210152653U
Application number: CN201920917667.6U
Authority: CN
Inventors: 陈笠; 曾凡杜; 赵源; 于永军; 涂怀健; 卓振华
Original assignee: Sinohydro Bureau 8 Co Ltd
Current assignee: Sinohydro Bureau 8 Co Ltd
Priority date: 2019-06-18
Filing date: 2019-06-18
Publication date: 2020-03-17
Anticipated expiration: 2029-06-18

Abstract

The utility model discloses a freezing method construction is with separating hourglass formula refrigerating plant with flow direction switches function, including the freezer that connects gradually the formation return circuit, the delivery pipe, series connection freezing pipeline and wet return, series connection freezing pipeline includes many cryogens and many series pipes, the equal both ends of each cryolite seal and the first end seal on seted up first connector and second connector, first connector is connected with wears to locate in the cryolite and extends to the pipe that stretches into of cryolite second end, series connection is between the second connector of preceding cryolite and the first connector of a back cryolite, the first connector and the water piping connection of head end cryolite, the second connector and the wet return of tail end cryolite are connected, be equipped with the bypass subassembly between delivery pipe and the wet return and be used for switching the flow direction switching subassembly of cold water among the series connection freezing pipeline. The device can keep freezing pipe normal work, continue the construction progress, improve frozen soil intensity, prevent catastrophic accident and make the on-the-way freezing more even.

Description

Leakage-proof type refrigerating device with flow direction switching function for freezing method construction

Technical Field

The utility model relates to a freeze construction technical field, especially relate to a freezing method construction is with separating hourglass formula refrigerating plant with flow direction switches function.

Background

Since the birth of the construction technology of the freezing method, the freezing method has the outstanding advantages of strong impermeability, high strength of the frozen soil body, environmental protection, no pollution and the like, and is widely applied to engineering construction of subways, deep foundation pits, mines and the like.

Presently, freezing pipe breakage and brine loss can occur during both active freezing and excavation. There are several causes for freezing tube breakage or leakage: firstly, the pipe is subject to cold shrinkage deformation after the pipe is unfrozen, so that the joint welding seam is cracked and leaked; secondly, the deformation of the frozen wall after excavation causes the bending and stretching of the frozen pipe, which leads to the fracture of the frozen pipe joint; thirdly, the repair welding quality of the freezing pipe threaded connection or the installation quality of the freezing pipe end plug has defects, the pressing leakage test is not strict enough, and the freezing pipe joint or the freezing pipe end plug leaks during water supply; fourthly, stratum disturbance, tunnel settlement and the like caused by drilling and freezing; fifthly, in the later stage of frozen hole construction, due to the fact that stratum disturbance is increased and permeability is improved, hole collapse and hole holding are easily caused, and the possibility of the situation and the difficulty in handling the situation are obviously increased. After the freezing pipe is broken, the salt water leaks, so that the freezing pipe can not work normally, and the frozen wall can be melted or the strength of the frozen soil is reduced. Particularly, when a water-containing sand layer with higher underground water pressure is encountered, drilling, water leakage and sand blasting are frequently carried out on a nearly horizontal freezing hole during construction, the treatment is not timely, serious stratum settlement can be caused, and the tunnel lining, the duct piece and the ground building are deformed and damaged and even cause a catastrophic accident of tunnel collapse.

Often with many cryovials in series connection during water supply, cold water is one-way flow, because cryovial length is longer, behind the refrigerated water got into first cryovial, along the flow constantly the intensification, leads to the heat absorption to slowly reduce, and the freezing speed constantly slows down, and it is inhomogeneous along the way freezing. For guaranteeing that along journey resistance loss is less, the pipeline pipe diameter that stretches into the cryovial is little a lot than the cryovial pipe diameter, hardly keeps the position placed in the middle, leans on to certain one side of cryovial when stretching into the pipeline (stretching into the pipeline of cryovial), and the relative opposite side of this side refrigerated water flow is little a lot, has aggravated the inhomogeneous of the speed of freezing in the radial plane of cryovial. The surface of the freezing pipe is in contact with rock soil for heat exchange, and the heat exchange coefficient is small; the convection heat exchange between the inner surface of the freezing pipe and cold water is realized, the cold water flow speed is low, the heat exchange area is limited, and the cooling speed is extremely low.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide one kind can keep freezing the pipe and normally work, continue the construction progress, improve frozen soil intensity, prevent catastrophic occurence of failure and can switch over cold water flow direction, make along the journey freeze more even freezing with flow direction switching function's freezing method construction with leaking-proof formula refrigerating plant.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a freezing method construction is with leaking formula refrigerating plant that separates with flow direction switches function, is including connecting gradually freezer, delivery pipe, series connection freezing pipeline and wet return that forms the return circuit, series connection freezing pipeline is including can insert locate in the soil body with many cryovials of freezing soil body and the many series-wound pipes that are used for establishing ties each cryovial, each the equal both ends of cryovial are sealed and are seted up first connector and second connector on the seal of first end, first connector is connected with and wears to locate in the cryovial and extend to the pipe that stretches into of cryovial second end, series-wound union coupling is between the second connector of preceding cryovial and the first connector of following cryovial, the first connector of head end cryovial with delivery union coupling, the second connector of tail end cryovial with wet return is connected, be equipped with between delivery pipe and the wet return and can cut off arbitrary cryovial and make other cryovials continue the bypass assembly of establishing ties and be used for switching series connection the first connector of establishing ties is with delivery pipe and wet return are The cold water in the freezing pipeline flows to the switching component.

As a further improvement of the above technical solution:

the bypass assembly comprises a bypass pipe, a connecting pipe, a first valve and a second valve, one end of the bypass pipe is connected with the water supply pipe, the other end of the bypass pipe is connected with the water return pipe, each series pipe is connected with the bypass pipe through the connecting pipe, the first valve is arranged on the bypass pipe on two sides of each connecting pipe, and the second valve is arranged on each series pipe on two sides of the connecting pipe connected with the series pipe, on the water supply pipe between the bypass pipe and the head end freezing pipe and on the water return pipe between the bypass pipe and the tail end freezing pipe.

The second valve is a three-way valve; and/or the first valve is a two-way valve.

The flow direction switching assembly comprises a first switching pipeline and a second switching pipeline, a first pipe connecting port and a second pipe connecting port are arranged between the bypass assembly and the freezer on the water supply pipe, the first pipe connecting port is located between the freezer and the second pipe connecting port, a third pipe connecting port and a fourth pipe connecting port are arranged between the bypass assembly and the freezer on the water return pipe, the fourth pipe connecting port is located between the freezer and the third pipe connecting port, one end of the first switching pipeline is connected with the first pipe connecting port, the other end of the first switching pipeline is connected with the third pipe connecting port, one end of the second switching pipeline is connected with the second pipe connecting port, the other end of the second switching pipeline is connected with the fourth pipe connecting port, and third valves are arranged on the first switching pipeline, on the second switching pipeline, between the first pipe connecting port and the second pipe connecting port and between the third pipe connecting port and the fourth pipe connecting port.

And spiral fins are arranged between the outer wall of the extension pipe and the inner wall of the freezing pipe.

The spiral fins are spirally arranged around the outer wall of the extension pipe, and the central axes of the extension pipe, the freezing pipe and the spiral fins are overlapped.

The spiral fins are fixedly arranged on the freezing pipe; or the spiral rib is fixedly arranged on the extending pipe.

One end of the extending pipe, which is close to the second end of the freezing pipe, is provided with an inclined opening.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses freezing method construction is with leaking formula refrigerating plant that separates with flowing direction switches function is including connecting gradually the freezer that forms the return circuit, the delivery pipe, establish ties freezing pipeline and wet return, establish ties freezing pipeline including can insert locate in the soil body with many cryovials of freezing soil body and be used for establishing ties many series connection pipes of each cryovial, the equal both ends of each cryovial are sealed and are seted up first connector and second connector on the sealing of first end, first connector is connected with wears to locate in the cryovial and extends to the pipe that stretches into of cryovial second end, series connection union coupling is between the second connector of preceding cryovial and the first connector of back cryovial, the first connector and the water piping connection of head end cryovial, the second and the wet return of tail end cryovial are connected, be equipped with between delivery pipe and the wet return and can cut off arbitrary cryovial and make the subassembly of other cryovials continue the series connection and be used for switching the flow direction of cold flow in the series connection freezing pipeline to flow direction and switch the subassembly . During the use, all cryovial intervals are buried underground in the soil body, the cryovial that the front and back is adjacent communicates through the series connection pipe in order to form series connection freezing pipeline, the first interface connection of delivery pipe and head end cryovial is passed through to the play water end of freezer, the second interface connection of wet return and tail end cryovial is passed through to the return water end of freezer, cold water in the freezer passes through the delivery pipe and gets into the cryovial, wherein cold water gets into the cryovial along stretching into the pipe, then flow to the top of cryovial by the bottom of cryovial along the space between cryovial and the delivery pipe again, along journey absorbed heat, under the condition that the leakage appears in arbitrary cryovial in series connection freezing pipeline, cut off this leaked cryovial through the bypass subassembly, so as to reach following effect: cold water is prevented from being continuously discharged from the leaked freezing pipe and entering the soil body, so that the frozen soil body is unfrozen, the freezing and solidifying temperature of the soil body is reduced, and the strength of frozen soil is improved; the phenomena of water leakage, sand blasting, stratum settlement, ground building deformation, tunnel collapse and the like are prevented, namely catastrophic accidents are prevented, and the use safety performance is improved. Meanwhile, other freezing pipes are connected in series continuously, so that the soil body is kept or continued to be frozen, namely the normal work and the construction progress of the freezing pipes are kept. The leakage-isolating refrigerating device with the flow direction switching function for the freezing method construction can isolate the leaked freezing pipe through the bypass assembly, keep the cold water supply of other freezing pipes in the same flow with the leaked freezing pipe, and enable the other freezing pipes to be continuously connected in series so as to continuously refrigerate the soil body. Simultaneously, this freezing method construction with leaking type refrigerating plant with flow direction switching function can switch the flow direction of cold water in the freezing pipeline of establishing ties through flow direction switching component, can adjust the flow direction of cold water in the freezing pipeline of establishing ties according to the fixed time for the cold water temperature in the freezing pipeline of establishing ties is more even, and each flow section heat absorption is more even promptly.

Further, the utility model discloses freezing method construction is with leaking formula refrigerating plant sets up the spiral fin between the inner wall that stretches into the outer wall of pipe and cryovial, very big increase the area of contact of cryovial inside with cold water, heat transfer area has been increased promptly, the flow of pipeline axis direction is followed with cold water to the spiral fin, the change is for flowing around the axis, very big increase flow length, the while aggravates the turbulent state of cold water flow process, the cryovial heat transfer coefficient has greatly been improved, make this freezing method construction with refrigerating plant's cooling efficiency high, the cooling effect is good.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a leakage-proof type refrigerating apparatus for freezing method construction according to the present invention having a flow direction switching function.

Fig. 2 is a schematic cross-sectional view of a freezing pipe in the first embodiment of the leakage-proof freezing device with flow direction switching function for freezing method construction of the present invention.

Fig. 3 is a schematic perspective view of a freezing pipe in the first embodiment of the leakage-proof type freezing device for freezing method construction with flow direction switching function of the present invention.

Fig. 4 is a schematic structural view of a second embodiment of the leakage-proof type refrigerating apparatus for freezing method construction according to the present invention having a flow direction switching function.

Fig. 5 is a schematic cross-sectional view of a freezing pipe in the second embodiment of the leakage-proof freezing device for freezing method construction according to the present invention with a flow direction switching function.

Fig. 6 is a schematic view showing a three-dimensional structure of a spiral fin fixed on an extension tube in the third embodiment of the leakage-proof refrigerating apparatus for freezing construction with flow direction switching function of the present invention.

The reference numerals in the figures denote:

1. a freezer; 2. a water supply pipe; 21. a first nozzle; 22. a second nozzle opening; 3. serially connecting freezing pipelines; 31. a freezing pipe; 311. a first connection port; 312. a second connection port; 313. extending the tube; 314. an angled port; 32. a pipe is connected in series; 33. spiral ribs; 34. a sealing block; 4. a water return pipe; 41. a third nozzle; 42. a fourth nozzle; 5. a soil body; 6. a flow direction switching component; 61. a first switching conduit; 62. a second switching conduit; 63. a third valve; 7. a bypass assembly; 71. a bypass pipe; 72. a connecting pipe; 73. a first valve; 74. a second valve.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

The first embodiment is as follows:

as shown in fig. 1 to 3, the leakage-blocking type freezing device with flow direction switching function for freezing method construction according to the first embodiment includes a freezer 1, a water supply pipe 2, a series freezing pipeline 3 and a water return pipe 4 which are sequentially connected to form a loop, the series freezing pipeline 3 includes a plurality of freezing pipes 31 which can be inserted into a soil body 5 to freeze the soil body 5 and a plurality of series pipes 32 for connecting the freezing pipes 31 in series, each freezing pipe 31 has a first connection port 311 and a second connection port 312 which are sealed at both ends and opened at a first end, the first connection port 311 is connected to an extension pipe 313 which is inserted into the freezing pipe 31 and extends to a second end of the freezing pipe 31, the series pipes 32 are connected between the second connection port 312 of the previous freezing pipe 31 and the first connection port 311 of the next freezing pipe 31, the first connection port 311 of the first freezing pipe 31 is connected to the water supply pipe 2, the second connection port 312 of the first freezing pipe 31 is connected to the water return pipe 4, a bypass component 7 which can block any freezing pipe 31 and make other freezing pipes 31 continuously connected in series and a flow direction switching component 6 which is used for switching the flow direction of the cold water in the series freezing pipeline 3 are arranged between the water supply pipe 2 and the water return pipe 4. In the structure, the two ends of the freezing pipe 31 are respectively provided with the sealing block 34, the extending pipe 313 is spaced from the second end of the freezing pipe 31, the first connecting port 311 and the second connecting port 312 are respectively arranged on the sealing block 34, when in use, all the freezing pipes 31 are embedded in the soil 5 at intervals, the freezing pipes 31 adjacent in front and back are communicated through the series pipe 32 to form a series freezing pipeline 3, the water outlet end of the freezer 1 is connected with the first connecting port 311 of the head freezing pipe 31 through the water supply pipe 2, the water return end of the freezer 1 is connected with the second connecting port 312 of the tail freezing pipe 31 through the water return pipe 4, cold water in the freezer 1 enters the freezing pipe 31 through the water supply pipe 2, wherein the cold water enters the freezing pipe 31 along the extending pipe 313, then flows from the bottom of the freezing pipe 31 to the top of the freezing pipe 31 along the space between the freezing pipe 31 and the water supply pipe 2, absorbs heat along the way, and under the condition that any freezing pipe 31 in the series freezing pipeline 3 leaks, the leaking freezing pipe 31 is blocked by the bypass assembly 7, so that the following effects are achieved: cold water is prevented from being continuously discharged from the leaked freezing pipe 31 to enter the soil body 5, so that the frozen soil body 5 is unfrozen, the freezing and solidifying temperature of the soil body 5 is reduced, and the frozen soil strength is improved; the phenomena of water leakage, sand blasting, stratum settlement, ground building deformation, tunnel collapse and the like are prevented, namely catastrophic accidents are prevented, and the use safety performance is improved. Meanwhile, other freezing pipes 31 are connected in series continuously, so that the soil body 5 is kept or continued to be frozen, namely the normal work and the construction progress of the freezing pipes are kept. The leakage-proof refrigerating device with the flow direction switching function for the freezing method construction can cut off the leaked freezing pipe 31 through the bypass assembly 7, and keep the cold water supply of other freezing pipes 31 in the same flow with the leaked freezing pipe 31, namely, other freezing pipes 31 are continuously connected in series to continuously freeze the soil body 5. This freezing method construction is with leaking formula refrigerating plant that separates with flow direction switching function can switch the flow direction of cold water in freezing pipeline 3 of establishing ties through flow direction switching module 6, can adjust the flow direction of cold water in freezing pipeline 3 of establishing ties according to the fixed time for the cold water temperature in freezing pipeline 3 of establishing ties is more even, and each flow path section heat absorption is more even promptly.

In this embodiment, the bypass assembly 7 includes a bypass pipe 71, a connecting pipe 72, a first valve 73 and a second valve 74, one end of the bypass pipe 71 is connected to the water supply pipe 2, and the other end is connected to the water return pipe 4, each serial pipe 32 is connected to the bypass pipe 71 through a connecting pipe 72, the bypass pipe 71 is provided with a first valve 73 on both sides of each connecting pipe 72, and each serial pipe 32 is provided with a second valve 74 on both sides of the connecting pipe 72 connected thereto, on the water supply pipe 2 between the bypass pipe 71 and the head-end freezing pipe 31, and on the water return pipe 4 between the bypass pipe 71 and the tail-end freezing pipe 31. When any freezing pipe 31 leaks, the second valves 74 at the water inlet end and the water outlet end of the freezing pipe 31 are closed, so that the freezing pipe 31 is isolated from the original series-connected freezing pipeline 3, cold water is prevented from continuously entering the freezing pipe 31, and meanwhile, the first valve 73 between the water supply pipe 2 at the water inlet end of the freezing pipe 31 or the connecting pipe 72 on the series-connected pipe 32 at the water outlet end of the freezing pipe 31 and the connecting pipe 72 or the water return pipe 4 on the series-connected pipe 32 at the water outlet end of the freezing pipe 31 is opened, if the freezing pipe 31 is the head end freezing pipe 31, the first valve 73 between the water supply pipe 2 and the connecting pipe 72 on the series-connected pipe 32 at the water outlet end of the freezing pipe 31 is; if the freezing pipe 31 is the tail end freezing pipe 31, opening a first valve 73 between a connecting pipe 72 on a serial pipe 32 at the water inlet end of the freezing pipe 31 and a water return pipe 4; if the freezing pipe 31 is the middle freezing pipe 31, opening a first valve 73 between a connecting pipe 72 on a series pipe 32 at the water inlet end of the freezing pipe 31 and a connecting pipe 72 on a series pipe 32 at the water outlet end of the freezing pipe 31; at the same time, the other first valves 73 are kept closed, i.e. the other freezing pipes 31 are connected in series continuously so as to continuously freeze the soil 5.

In this embodiment, the second valve 74 is a three-way valve. When any freezing pipe 31 leaks, the three-way valves at the water inlet end and the water outlet end of the freezing pipe 31 can be used for blocking the water inlet and the water outlet of the freezing pipe 31, the inlet and the outlet of the freezing pipe 31 are both communicated with the outside, then liquid nitrogen is introduced into the freezing pipe 31 through any three-way valve, the cold water in the freezing pipe 31 is discharged, and meanwhile, the soil body 5 around the freezing pipe 31 is kept or continued to be frozen continuously.

In this embodiment, the first valve 73 is a two-way valve, and the two-way valve is a conventional component, so that the material selection is convenient and the cost is low.

In this embodiment, the flow direction switching component 6 includes a first switching pipeline 61 and a second switching pipeline 62, a first pipe connecting port 21 and a second pipe connecting port 22 are provided between the bypass component 7 and the freezer 1 on the water supply pipe 2, the first pipe connecting port 21 is located between the freezer 1 and the second pipe connecting port 22, a third pipe connecting port 41 and a fourth pipe connecting port 42 are provided between the bypass component 7 and the freezer 1 on the water return pipe 4, the fourth pipe connecting port 42 is located between the freezer 1 and the third pipe connecting port 41, one end of the first switching pipeline 61 is connected to the first pipe connecting port 21, the other end is connected to the third pipe connecting port 41, one end of the second switching pipeline 62 is connected to the second pipe connecting port 22, and the other end is connected to the fourth pipe connecting port 42, third valves 63 are arranged on the first switching pipeline 61, the second switching pipeline 62, between the first pipe connecting port 21 and the second pipe connecting port 22 and between the third pipe connecting port 41 and the fourth pipe connecting port 42. When cold water flows in the forward direction, that is, the third valves 63 on the first switching pipeline 61 and the second switching pipeline 62 are both closed, the third valves 63 between the first pipe connector 21 and the second pipe connector 22 and between the third pipe connector 41 and the fourth pipe connector 42 are both opened, and cold water in the freezer 1 flows in from the head end and the tail end of the series freezing pipeline 3 through the water supply pipe 2 and then returns to the freezer 1 through the water return pipe 4. When cold water flows in the reverse direction, that is, the third valves 63 on the first switching pipeline 61 and the second switching pipeline 62 are both opened, the third valves 63 between the first pipe connecting port 21 and the second pipe connecting port 22 and between the third pipe connecting port 41 and the fourth pipe connecting port 42 are both closed, cold water in the freezer 1 flows into the first switching pipeline 61 through the top section a of the water supply pipe 2 and the first pipe connecting port 21, flows into the tail end and flows out of the head end of the series freezing pipeline 3 through the third pipe connecting port 41 and the bottom section B of the water return pipe 4, and returns to the freezer 1 through the bottom section C of the water supply pipe 2, the second pipe connecting port 22, the second switching pipeline 62, the fourth pipe connecting port 42 and the top section D of the water return pipe 4.

In this embodiment, an inclined port 314 is disposed at an end of the extending pipe 313 near the second end of the freezing pipe 31, so that water in the extending pipe 313 can flow in and out conveniently.

Example two:

as shown in fig. 4 and 5, the leakage preventing type refrigerating apparatus for freezing method construction having a flow direction switching function according to the second embodiment is configured such that a spiral rib 33 is provided between an outer wall of an insertion pipe 313 and an inner wall of a freezing pipe 31 in addition to the first embodiment. In this structure, the very big increase of spiral fin 33 freezing pipe 31 inside with the area of contact of cold water, heat transfer area has been increased promptly, spiral fin 33 is with cold water along the flow of pipeline axis direction, the change is for flowing around the axis, very big increase flow length, the while aggravates the turbulent state of cold water flow process, freezing pipe 31 heat transfer coefficient has greatly been improved, make this freezing method construction with separating hourglass formula refrigerating plant with flow direction switching function's cooling efficiency high, the cooling effect is good.

In this embodiment, spiral fin 33 spirals around the outer wall that stretches into pipe 313 and sets up, and stretch into pipe 313, cryovial 31 and the coincidence of spiral fin 33 three's center pin, cold water has been made to keep evenly at cryovial 31 radial plane flow, the homogeneity of cryovial 31 radial plane cooling rate has been guaranteed, and simultaneously, in the assembling process, spiral fin 33 has radial spacing and axial direction's effect to stretching into pipe 313, it is very easy to make to stretch into pipe 313, the counter shaft assembly of cryovial 31 and spiral fin 33 three, keep stretching into the position placed in the middle of pipe 313 in cryovial 31 easily, prevent to stretch into pipe 313 and lean on to certain one side of cryovial 31.

In this embodiment, the outer side of the spiral rib 33 is fixed on the freezing pipe 31, and the inner side of the spiral rib 33 is in contact with but not fixed to the extending pipe 313. Assembling process of freezing pipe 31: inserting the spiral fin 33 into the inner cavity of the freezing pipe 31, making the spiral fin 33 coaxial with the freezing pipe 31, and both ends of the spiral fin 33 located in the inner cavity of the freezing pipe 31, then welding both ends of the spiral fin 33 with the inner wall of the freezing pipe 31, then sealing the bottom end of the freezing pipe 31, and then processing the sealing block 34 at the top end of the freezing pipe 31, and opening the first connector 311 and the second connector 312 on the sealing block 34 at the top end of the freezing pipe 31, wherein the first connector 311 is located at the center position of the sealing block 34 at the top end of the freezing pipe 31, then connecting the top end of the extension pipe 313 to the first connector 311, then inserting the extension pipe 313 into the center space of the spiral fin 33, and finally fixing the sealing block 34 at the top end of the freezing pipe 31, thereby completing the assembly of the freezing pipe 31.

Example three:

as shown in fig. 4, the third embodiment of the present invention is a freezing method construction leakage-proof type freezing apparatus having a flow direction switching function, and the third embodiment of the present invention has the same structure as the second embodiment of the present invention except that the fixing position of the spiral fin 33 is different, in which the inner side of the spiral fin 33 is fixed to the insertion pipe 313 and the outer side of the spiral fin 33 is not fixed to the freezing pipe 31 but is in contact with it. Compared with the first embodiment, the assembly process of the spiral rib 33 fixedly arranged on the extending pipe 313 is more convenient and reasonable, and the assembly process of the freezing pipe 31 is as follows: firstly, sealing the bottom end of the freezing pipe 31, processing the sealing block 34 at the top end of the freezing pipe 31, arranging a first connecting port 311 and a second connecting port 312 on the sealing block 34 at the top end of the freezing pipe 31, wherein the first connecting port 311 is positioned at the central position of the sealing block 34 at the top end of the freezing pipe 31, then connecting the top end of the extending pipe 313 to the first connecting port 311, then spiraling and fixing the spiral fins 33 on the outer wall of the extending pipe 313, then inserting the extending pipe 313 with the spiral fins 33 into the inner cavity of the freezing pipe 31, and finally fixing the sealing block 34 at the top end of the freezing pipe 31, thereby completing the assembly of the freezing pipe 31.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a freezing method construction is with separating hourglass formula refrigerating plant with flow direction switches function which characterized in that: comprises a freezer (1), a water supply pipe (2), a series freezing pipeline (3) and a water return pipe (4) which are sequentially connected to form a loop, wherein the series freezing pipeline (3) comprises a plurality of freezing pipes (31) which can be inserted into a soil body (5) to freeze the soil body (5) and a plurality of series pipes (32) which are used for serially connecting the freezing pipes (31), both ends of each freezing pipe (31) are sealed, a first connecting port (311) and a second connecting port (312) are arranged on the seal of the first end, the first connecting port (311) is connected with an extending pipe (313) which is arranged in the freezing pipe (31) in a penetrating way and extends to the second end of the freezing pipe (31), the series pipes (32) are connected between the second connecting port (312) of the previous freezing pipe (31) and the first connecting port (311) of the next freezing pipe (31), the first connecting port (311) of the first freezing pipe (31) is connected with the water supply pipe (2), the second connecting port (312) of the tail end freezing pipe (31) is connected with the water return pipe (4), a bypass assembly (7) capable of separating any freezing pipe (31) and enabling other freezing pipes (31) to be continuously connected in series is arranged between the water supply pipe (2) and the water return pipe (4), and a flow direction switching assembly (6) used for switching the flow direction of cold water in the series freezing pipeline (3) is arranged between the water supply pipe (2) and the water return pipe (4).

2. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to claim 1, characterized in that: the bypass assembly (7) comprises a bypass pipe (71), a connecting pipe (72), a first valve (73) and a second valve (74), one end of the bypass pipe (71) is connected with the water supply pipe (2), the other end of the bypass pipe is connected with the water return pipe (4), each series pipe (32) is connected with the bypass pipe (71) through the connecting pipe (72), the first valve (73) is arranged on the two sides of each connecting pipe (72) on the bypass pipe (71), and the second valve (74) is arranged on each series pipe (32) on the two sides of the connecting pipe (72) connected with the series pipe, between the bypass pipe (71) and the head-end freezing pipe (31) on the water supply pipe (2) and between the bypass pipe (71) and the tail-end freezing pipe (31) on the water return pipe (4).

3. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to claim 2, characterized in that: the second valve (74) is a three-way valve; and/or the first valve (73) is a two-way valve.

4. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to any one of claims 1 to 3, characterized in that: the flow direction switching component (6) comprises a first switching pipeline (61) and a second switching pipeline (62), a first pipe connecting port (21) and a second pipe connecting port (22) are arranged on the water supply pipe (2) between the bypass component (7) and the freezer (1), the first pipe connecting port (21) is located between the freezer (1) and the second pipe connecting port (22), a third pipe connecting port (41) and a fourth pipe connecting port (42) are arranged on the water return pipe (4) between the bypass component (7) and the freezer (1), the fourth pipe connecting port (42) is located between the freezer (1) and the third pipe connecting port (41), one end of the first switching pipeline (61) is connected with the first pipe connecting port (21), the other end of the first switching pipeline is connected with the third pipe connecting port (41), one end of the second switching pipeline (62) is connected with the second pipe connecting port (22), the other end of the first switching pipeline is connected with a fourth pipe connecting port (42), and third valves (63) are arranged on the first switching pipeline (61), the second switching pipeline (62), between the first pipe connecting port (21) and the second pipe connecting port (22) and between the third pipe connecting port (41) and the fourth pipe connecting port (42).

5. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to any one of claims 1 to 3, characterized in that: spiral ribs (33) are arranged between the outer wall of the extension pipe (313) and the inner wall of the freezing pipe (31).

6. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to claim 5, characterized in that: the spiral ribs (33) are spirally arranged around the outer wall of the extending pipe (313), and the central axes of the extending pipe (313), the freezing pipe (31) and the spiral ribs (33) are overlapped.

7. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to claim 4, characterized in that: spiral ribs (33) are arranged between the outer wall of the extension pipe (313) and the inner wall of the freezing pipe (31).

8. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to claim 7, characterized in that: the spiral ribs (33) are spirally arranged around the outer wall of the extending pipe (313), and the central axes of the extending pipe (313), the freezing pipe (31) and the spiral ribs (33) are overlapped.

9. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to claim 8, characterized in that: the spiral ribs (33) are fixedly arranged on the freezing pipe (31); or the spiral rib (33) is fixedly arranged on the extending pipe (313).

10. The leak-proof refrigerating apparatus for freezing construction having a flow direction switching function according to any one of claims 1 to 3, characterized in that: an inclined opening (314) is formed in one end, close to the second end of the freezing pipe (31), of the extending pipe (313).