A negative pressure well that is convenient for use and maintenance

Abstract

The present invention discloses a negative pressure well which is convenient to use and maintain, comprising: a wellbore, at the bottom of which there is a storage tank installation foundation; a storage tank, arranged on the storage tank installation foundation; a water collecting pipe and a drain pipe are arranged inside it, the water inlet end of the water collecting pipe is connected with an exhaust cooling device, and the water outlet end of the water collecting pipe is arranged at the lower part of the storage tank; the water outlet end of the drain pipe is communicated with a return water tank; a submersible pump, arranged inside the storage tank, fixed to the bottom surface of the storage tank, and the submersible pump is connected with the drain pipe; a plurality of working platforms, longitudinally arranged along the inner wall of the storage tank, and arranged on one side of the water collecting pipe and the drain pipe; a plurality of working platforms, the upper end of the wellbore and the bottom surface of the storage tank are connected by a plurality of sections of working ladders. In the present invention, the storage tank is arranged inside the wellbore, and a suitable wellbore can be excavated as required, thereby avoiding the limitation of the storage tank by the volume and the selection of the drainage pump; maintenance personnel can go to the working platform through the working ladder to maintain the storage tank and its internal equipment, improving the convenience of use and maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of high-altitude simulation test equipment for aero-engines, and particularly relates to a negative pressure well that is convenient for use and maintenance. Background Art

[0002] The high-altitude simulation test of an aero-engine is to simulate the flight conditions and environment of an aircraft engine in the air on the ground, and to conduct a high-altitude simulation test on the whole engine and components of the engine. It is an indispensable means for developing advanced aero-engines and their improvements and modifications. During the process of the high-altitude simulation test of an aero-engine, a large amount of high-temperature gas is generated by the engine. To prevent the high-temperature gas from damaging the simulation test equipment, the high-altitude simulation test equipment for an aero-engine must be provided with equipment for cooling the gas discharged from the engine.

[0003] At present, the method of water spray cooling is widely used to cool the discharged gas. Therefore, the high-altitude simulation test equipment for an aero-engine also needs to be equipped with a collection system for directly spraying water from the exhaust cooling equipment. The collection system usually has two types: a negative pressure storage tank collection system and a negative pressure well collection system.

[0004] The negative pressure storage tank collection system needs to set up a negative pressure storage tank. The exhaust cooling equipment operates under negative pressure. The directly sprayed water ejected by the exhaust cooling equipment during operation will flow to the negative pressure storage tank under the action of gravity after being ejected. The water collected in the negative pressure storage tank is then pumped out by a negative pressure drainage pump and discharged to the return water pool. When designing and constructing the negative pressure storage tank collection system, the net positive suction head of the negative pressure drainage pump needs to be considered to ensure that the water return capacity of the negative pressure drainage pump meets the requirements of the return water main pipe. At the same time, when designing the negative pressure storage tank in the negative pressure storage tank collection system, it is restricted by the directly sprayed water volume in the exhaust cooling equipment and the vacuum environment during cooling. Therefore, generally, the larger the water spray volume of the exhaust cooling equipment, the larger the volume of the storage tank needs to be designed; the higher the vacuum degree in the exhaust cooling equipment, the greater the buried depth of the storage tank needs to be designed, and the more demanding the selection of the negative pressure drainage pump. The volume of the negative pressure storage tank and the construction of the drainage pump will increase the difficulty and cost of civil construction.

[0005] The negative pressure well collection system needs to set up a negative pressure drainage well with a depth of 10 - 15m. The water collected in the well needs to be discharged after being pressurized by a drainage pump. In the conventional negative pressure well collection system, the negative pressure drainage well is only a 10 - 15m shaft, which only has the functions of storing water and draining water, and is not convenient for use during the test and later maintenance.

[0006] In view of this, there is an urgent need for a negative pressure well structure that is convenient for use and maintenance to solve the problems of the limited volume, high cost of the existing negative pressure storage tank collection system, and the inconvenience of use and maintenance of the negative pressure well collection system. Summary of the Invention

[0007] In view of the above defects, the object of the present invention is to provide a negative pressure well that is convenient to use and maintain, so as to solve the problems of limited volume, high cost, and inconvenient use and maintenance of the existing negative pressure storage tank collection system.

[0008] To this end, a negative pressure well that is convenient to use and maintain provided by the present invention includes:

[0009] A wellbore, which is arranged below the ground, and a storage tank installation foundation is provided at the bottom of the wellbore;

[0010] A storage tank, which is arranged on the storage tank installation foundation; a water collecting pipe and a drain pipe are arranged in the storage tank, the water inlet end of the water collecting pipe is connected to an exhaust cooling device, and the water outlet end of the water collecting pipe is arranged at the lower part of the storage tank; the water outlet end of the drain pipe is communicated with a return water pool;

[0011] A submersible pump, which is arranged in the storage tank and fixed to the bottom surface of the storage tank, and the submersible pump is connected to the drain pipe;

[0012] A plurality of working platforms are longitudinally arranged along the inner wall of the storage tank, and the plurality of working platforms are arranged on one side of the water collecting pipe and the drain pipe; multiple sections of working ladders are connected between the plurality of working platforms, between the working platforms and the upper end of the wellbore, and between the working platforms and the bottom surface of the storage tank.

[0013] In the above technical solution, preferably, a storage tank cover plate is provided at the upper end of the storage tank, a submersible pump lifting hole and an operation passage hole are provided on the storage tank cover plate, a submersible pump base is provided on the bottom surface of the storage tank for installing and fixing the submersible pump, and the submersible pump lifting hole is arranged above the submersible pump base; the operation passage hole is arranged above the working ladder.

[0014] In the above technical solution, preferably, a submersible pump lifting cover plate is provided on the storage tank cover plate, which is detachably installed on the submersible pump lifting hole, and the submersible pump lifting cover plate is a grid plate.

[0015] In the above technical solution, preferably, an operation passage hole cover plate is provided on the storage tank cover plate, and one end of the operation passage hole cover plate is hinged to the storage tank cover plate and rotatably arranged on the operation passage hole.

[0016] In the above technical solution, preferably, a maintenance passage is longitudinally arranged along the inner wall of the wellbore, the maintenance passage is arranged outside the storage tank, and a maintenance ladder is arranged in the maintenance passage along the maintenance passage.

[0017] In the above technical solution, preferably, a negative pressure well room is provided above the wellbore, a traveling crane is arranged in the negative pressure well room, and the upper end of the storage tank and the upper end of the maintenance passage are both arranged in the negative pressure well room.

[0018] In the above technical solution, preferably, a plurality of sets of guiding and limiting devices are provided in the wellbore. Each set of guiding and limiting parts includes a plurality of guiding and limiting parts distributed along the radial direction of the wellbore, and the guiding and limiting parts are in contact with the outer side wall of the storage tank.

[0019] In the above technical solution, preferably, the submersible pump is arranged on one side inside the storage tank, and the working platform, the water collecting pipe, the drain pipe and the working ladder are arranged on the other side inside the storage tank.

[0020] In the above technical solution, preferably, the working platform is arranged perpendicular to the inner wall of the storage tank; the working platform is paved with diamond plate; handrails are provided on the working platform, and a protective cage is provided on the working ladder;

[0021] A pipe fixing part is arranged between the inner wall of the storage tank and the side surface of the working platform. Pipe fixing holes are provided on the pipe fixing part, and the water collecting pipe and the drain pipe are arranged in the pipe fixing holes.

[0022] In the above technical solution, preferably, a plurality of sets of T-shaped ribs are provided on the inner wall of the storage tank, and the plurality of sets of T-shaped ribs are arranged at intervals longitudinally on the inner wall of the storage tank.

[0023] As can be seen from the above technical solution, the negative pressure well provided by the present invention is convenient to use and maintain, and is used for the recovery of the exhaust cooling water of the high-altitude simulation test equipment of aeroengines. Compared with the prior art, the present invention has the following beneficial effects:

[0024] First of all, the negative pressure well includes a wellbore and a storage tank arranged in the wellbore. The depth of the wellbore can be excavated according to the required volume. The storage tank is arranged in the wellbore without being buried deeply underground, greatly reducing the construction difficulty and construction cost of the storage tank of the negative pressure well;

[0025] Secondly, the upper end of the storage tank is provided with an open mouth. A working platform and a working ladder are arranged inside the storage tank. The ground, the working platform and the bottom of the storage tank are connected through the working ladder, which is convenient for the staff to enter the storage tank to repair the equipment such as the water collecting pipe, the drain pipe and the submersible pump inside the storage tank and to monitor and measure the directly sprayed water collected during the test, improving the work convenience and work efficiency of the staff.

[0026] Finally, in a preferred solution of the present invention, a negative pressure well house is arranged on the negative pressure well head, and a gantry crane is arranged in the negative pressure well house. On the one hand, the negative pressure well house effectively protects the negative pressure well head, and on the other hand, it is convenient to store tools in the negative pressure well house, facilitating the monitoring and maintenance of the negative pressure well by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce and explain the drawings required for the description of the embodiments of the present invention or the prior art. Obviously, the drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 Structural schematic diagram of a negative pressure well that is convenient for use and maintenance in the present invention;

[0029] Figure 2 Top view of a negative pressure well that is convenient for use and maintenance in the present invention;

[0030] Figure 3 Top view of the storage tank cover plate of the present invention;

[0031] Figure 4 Structural schematic diagram of the working platform in the present invention.

[0032] Figures 1-4 Among them, the corresponding relationship between the components and the reference numerals is as follows:

[0033] Wellbore 1, storage tank 2, submersible pump 3, working platform 4, working ladder 5, collecting pipe 6, drain pipe 7, pipe fixing part 8, negative pressure well room 9,

[0034] Storage tank installation foundation 11, guiding and limiting part 12,

[0035] Submersible pump base 21, storage tank cover plate 22, submersible pump lifting hole 23, operation passage hole 24, submersible pump lifting cover plate 25, operation passage hole cover plate 26, T-shaped rib 27,

[0036] Overhead crane 91, maintenance passage 92, maintenance ladder 93. Specific embodiments

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] To more clearly explain and illustrate the technical solutions and implementation methods of the present invention, the following introduces several preferred specific embodiments for implementing the technical solutions of the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] In addition, the terms "inner, outer", "front, back", "left, right", "vertical, horizontal", "top, bottom", etc. in this article indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0041] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0042] Specific Embodiment 1.

[0043] Please refer to Figure 1 and Figure 2 , the Figure 1 is a schematic structural diagram of the negative pressure well that is convenient for use and maintenance described in this embodiment; the Figure 2 is a top view of the negative pressure well that is convenient for use and maintenance described in this embodiment.

[0044] As Figure 1 shown, the negative pressure well provided by the present invention that is convenient for use and maintenance includes a wellbore 1, a storage tank 2, a submersible pump 3, a working platform 4, and a working ladder 5.

[0045] The wellbore 1 is arranged below the ground, and a storage tank installation foundation 11 is provided at the bottom of the wellbore 1. The storage tank 2 is arranged on the storage tank installation foundation 11 and is fixed in the wellbore 1 through the storage tank installation foundation 11. A water collecting pipe 6 and a drain pipe 7 are arranged in the storage tank 2. The water inlet end of the water collecting pipe 6 is connected to the exhaust cooling equipment, and the water outlet end of the water collecting pipe 6 is arranged at the lower part of the storage tank 2 for collecting the direct sprayed water from the drainage cooling equipment. The water outlet end of the drain pipe 7 is communicated with the return water pool for conveying the water collected in the storage tank 2 to the return water pool. The submersible pump 3 is arranged in the storage tank 2, the submersible pump 3 is fixed to the bottom surface of the storage tank 2, and the output end of the submersible pump 3 is connected to the water inlet end of the drain pipe 7 to pump the water to the return water pool through the submersible pump 3.

[0046] A plurality of working platforms 4 are longitudinally arranged along the inner wall of the storage tank 2. The plurality of working platforms 4 are arranged on one side of the water collecting pipe 6 and the drain pipe 7 so that the staff can construct or repair the water collecting pipe 6 and the drain pipe 7; between the plurality of working platforms 4, between the working platform 4 and the upper open end of the shaft 1, and between the working platform 4 and the bottom surface of the storage tank 2 are connected by multiple sections of working ladders 5, facilitating the staff to reach the working platform 4.

[0047] By providing a shaft and fixing the storage tank in the shaft, the problems that the economic cost and construction difficulty of the storage tank are greatly affected by the selection of the volume negative pressure drainage pump of the storage tank and the use and maintenance of the negative pressure well are inconvenient are solved.

[0048] Specific embodiment 2.

[0049] This specific embodiment 2 is a further optimization and improvement of the storage tank and the working platform in specific embodiment 1.

[0050] Please refer to Figure 3 and Figure 4 which is the top view of the storage tank cover of this embodiment; and Figure 3 which is the top view of the working platform described in this embodiment. Figure 4 Figure 4

[0051] A submersible pump base 21 is provided on the bottom surface of the storage tank 2 for installing and fixing the submersible pump 3. The upper end of the storage tank 2 is provided with a storage tank cover 22. The storage tank cover 22 is provided with a submersible pump lifting hole 23 and an operation passage hole 24. The submersible pump lifting hole 23 is arranged above the submersible pump base 21, facilitating the hoisting of the submersible pump 3 from the ground into the storage tank 2 for installation by using hoisting equipment. The operation passage hole 24 is arranged above the working ladder 5, facilitating the staff to reach the ladder 5.

[0052] The storage tank cover 22 is provided with a submersible pump lifting cover 25. The storage tank cover 22 is detachably installed on the submersible pump lifting hole 23. The submersible pump lifting cover 25 is a grid plate. The storage tank cover 22 is provided with an operation passage hole cover 26. One end of the operation passage hole cover 26 is hinged to the storage tank cover 22 and is rotatably arranged on the operation passage hole 24.

[0053] Through the grid plate of the storage tank cover 22, both the weight is reduced and the functions of air permeability and light transmission can be achieved, improving the working environment in the storage tank 2 and facilitating the staff to carry out daily operations. The number of the submersible pump lifting holes 23 and the operation passage holes 24 on the storage tank cover 22 can be increased or decreased according to the actual situation. Lighting and ventilation should still be designed in the shaft 1 and the storage tank 2 to facilitate the staff to carry out measurement and maintenance operations.

[0054] ​The space inside the storage tank 2 can be divided into a first working area and a second working area. The submersible pump 3 is arranged inside the first working area, on one side inside the storage tank 2; the working platform 4, the water collecting pipe 6, the drain pipe 7 and the working ladder 5 are arranged inside the second working area, on the other side inside the storage tank 2, thus facilitating the layout of equipment such as the submersible pump 3, the working platform 4, the water collecting pipe 6, the drain pipe 7 and the working ladder 5.

[0055] The working platform 4 is arranged perpendicular to the inner wall of the storage tank 2. The working platform 4 is paved with diamond plate, which plays a role in anti-slip; handrails are arranged on the working platform 4, and a safety cage is arranged on the working ladder 5, ensuring the safety of personnel during work. The number of the working platform 4 and the working ladder 5 can be increased or decreased according to relevant requirements.

[0056] A pipe fixing part 8 is arranged between the inner wall of the storage tank 2 and the side surface of the working platform 4. Pipe fixing holes are arranged on the pipe fixing part 8. The water collecting pipe 6 and the drain pipe 7 are arranged in the pipe fixing holes, and the pipe fixing part 8 plays a role in supporting and fixing the water collecting pipe 6 and the drain pipe 7.

[0057] Specific embodiment 3.

[0058] This specific embodiment 2 is a further optimization and improvement of the storage tank in specific embodiment 1.

[0059] Please refer to Figure 2 , the Figure 2 is a top view of the negative pressure well convenient for use and maintenance described in this embodiment.

[0060] A negative pressure well house 9 is arranged above the wellbore 1. The upper end of the storage tank 2 is arranged inside the negative pressure well house 9. A gantry crane 91 is arranged inside the negative pressure well house 9, which is used to lower or lift the submersible pump 3.

[0061] An inspection passage 92 longitudinally arranged along the inner wall of the wellbore 1 is arranged inside the wellbore 1. The inspection passage 92 is arranged outside the storage tank 2. An inspection ladder 93 arranged along the inspection passage 92 is arranged inside the inspection passage 92. The upper end of the inspection passage 92 is arranged inside the negative pressure well house 9, and a spare inspection ladder is arranged inside the inspection passage 92.

[0062] Multiple groups of T-shaped ribs 27 are arranged on the inner wall of the storage tank 2. The multiple groups of T-shaped ribs 27 are arranged at intervals longitudinally on the inner wall of the storage tank 2, which is used to improve the structural strength of the storage tank 2. Multiple groups of guiding and limiting devices are arranged inside the wellbore 1. Each group of guiding and limiting devices includes multiple guiding and limiting parts 12. The guiding and limiting parts 12 are abutted against the outer side wall of the storage tank 2, which is used to improve the stability of the storage tank 2.

[0063] By arranging a negative pressure well house at the upper end of the wellbore, the negative pressure well equipment is protected, and at the same time, it is convenient for the staff to carry out operations such as detection, maintenance and equipment replacement inside the negative pressure well house.

[0064] The usage method of the present invention is as follows:

[0065] When constructing a negative pressure well, first carry out the civil engineering of the wellbore 1, and construct a storage tank installation foundation 11 at the bottom of the wellbore 1. Then lower the storage tank 2 into the wellbore 1 and fix it to the storage tank installation foundation 11. Build a working platform 4 and a working ladder 5 in the storage tank 2, and install a water collecting pipe 6 and a drain pipe 7. Construct a negative pressure well house 9 above the wellbore 1, and install a gantry crane 91 in the negative pressure well house 9. Lower the submersible pump 3 into the storage tank 2 through the gantry crane 91 in the negative pressure well house 9 and fix it to the storage tank 2. After the equipment construction in the storage tank 2 is completed, cover the upper open end of the storage tank 2 with a storage tank cover plate 22.

[0066] When the staff needs to enter the storage tank 2 to detect the cooling water collected in the storage tank 2 or repair the equipment in the storage tank 2, the staff opens the operation passage hole cover plate 26 on the storage tank cover plate 22, enters the storage tank 2 through the operation passage hole, and reaches the working platform 4 or the bottom of the storage tank 2 through the working ladder 5. When it is necessary to replace and repair the submersible pump 3 at the bottom of the storage tank 2, the lifting of the submersible pump 3 is realized through the gantry crane 91 in the negative pressure well house 9.

[0067] The staff can also move through the inspection passage 92 via the inspection ladder 93 on one side of the storage tank 2, so as to realize the inspection of the storage tank 2, which is convenient for the staff to timely discover the leakage or other abnormal conditions of the storage tank 2.

[0068] Finally, it should also be noted that the structures, ratios, sizes, etc. shown in the attached drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limited conditions for the implementation of this application. Therefore, they do not have any technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed in this application can cover.

[0069] The term "comprising" used herein, or any other variant thereof, is intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0070] The present invention is not limited to the above-mentioned optimal embodiments. Any person should be aware that structural changes made under the inspiration of the present invention, as long as they have the same or similar technical solutions as the present invention, shall fall within the protection scope of the present invention.

Claims

1. A negative pressure well convenient for use and maintenance, characterized in that Including: A wellbore, which is arranged below the ground, and a storage tank installation foundation is provided at the bottom of the wellbore; A storage tank, which is arranged on the storage tank installation foundation; a water collecting pipe and a drain pipe are arranged in the storage tank, the water inlet end of the water collecting pipe is connected with an exhaust cooling device, and the water outlet end of the water collecting pipe is arranged at the lower part of the storage tank; the water outlet end of the drain pipe is communicated with a return water pool; A submersible pump, which is arranged in the storage tank and fixed to the bottom surface of the storage tank, and the submersible pump is connected with the drain pipe; A plurality of working platforms, which are longitudinally arranged along the inner wall of the storage tank, and the plurality of working platforms are arranged on one side of the water collecting pipe and the drain pipe; between the plurality of working platforms, between the working platform and the upper end of the wellbore, and between the working platform and the bottom surface of the storage tank are connected by multiple sections of working ladders; A storage tank cover plate is provided at the upper end of the storage tank, and a submersible pump hoisting hole is provided on the storage tank cover plate; A submersible pump hoisting cover plate is provided on the storage tank cover plate, and is detachably installed on the submersible pump hoisting hole, and the submersible pump hoisting cover plate is a grid plate; The submersible pump is arranged on one side in the storage tank, and the working platform, the water collecting pipe, the drain pipe and the working ladder are arranged on the other side in the storage tank; The working platform is arranged perpendicular to the inner wall of the storage tank; a diamond plate is laid on the working platform; a handrail is provided on the working platform, and a safety cage is provided on the working ladder; A pipe fixing part is provided between the inner wall of the storage tank and the side surface of the working platform, and a pipe fixing hole is provided on the pipe fixing part, and the water collecting pipe and the drain pipe are arranged in the pipe fixing hole; An inspection passage is arranged longitudinally along the inner wall in the wellbore, the inspection passage is arranged outside the storage tank, and an inspection ladder is arranged along the inspection passage in the inspection passage; A negative pressure well room is provided above the wellbore, a gantry crane is arranged in the negative pressure well room, and the upper end of the storage tank and the upper end of the inspection passage are both arranged in the negative pressure well room.

2. The negative pressure well that is convenient for use and maintenance according to claim 1, wherein, An operation passage hole is provided on the storage tank cover plate, a submersible pump base is provided on the bottom surface of the storage tank for installing and fixing the submersible pump, and the submersible pump hoisting hole is arranged above the submersible pump base; the operation passage hole is arranged above the working ladder.

3. The negative pressure well that is convenient for use and maintenance according to claim 2, wherein, An operation passage hole cover plate is provided on the storage tank cover plate, and one end of the operation passage hole cover plate is hinged to the storage tank cover plate and rotatably arranged on the operation passage hole.

4. The negative pressure well that is convenient for use and maintenance according to claim 1, wherein A plurality of groups of guiding and limiting devices are arranged in the wellbore, each group of guiding and limiting parts includes a plurality of guiding and limiting parts distributed radially along the wellbore, and the guiding and limiting parts are abutted against the outer side wall of the storage tank.

5. The negative pressure well that is convenient for use and maintenance according to claim 1, wherein, A plurality of groups of T-shaped ribs are arranged on the inner wall of the storage tank, and the plurality of groups of T-shaped ribs are arranged at intervals longitudinally along the inner wall of the storage tank.

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