CN210768771U - Shield system and cooling device for external circulating water thereof - Google Patents
Shield system and cooling device for external circulating water thereof Download PDFInfo
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- CN210768771U CN210768771U CN201921168487.9U CN201921168487U CN210768771U CN 210768771 U CN210768771 U CN 210768771U CN 201921168487 U CN201921168487 U CN 201921168487U CN 210768771 U CN210768771 U CN 210768771U
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Abstract
The utility model discloses a shield constructs system and cooling device of extrinsic cycle water thereof, the cooling device of the extrinsic cycle water of shield structure system includes: a circulating water tank; the external circulating water pipeline is used for guiding external circulating water into the circulating water tank; the first temperature detection element is used for detecting the water temperature in the circulating water tank; and the secondary circulation pipeline is used for carrying out secondary circulation cooling on the water in the circulating water tank. The cooling efficiency of the cooling device of the external circulating water is high, and heat can be replaced into the air in time; therefore, the shield system adopting the cooling device for the external circulating water has high cooling efficiency and can constantly keep a normal working state.
Description
Technical Field
The utility model relates to a circulating water cooling technical field, concretely relates to shield constructs system and cooling device of extrinsic cycle water thereof.
Background
In the construction process of urban rail transit, in order to ensure that the shield system can keep a normal working state, the shield system needs to be kept at a preset ideal temperature constantly by using a cooling system. Particularly, for high-heat weather in the south, the cooling effect of the shield system is the key for keeping the shield system working normally. The cooling mechanism of the shield system mainly comprises an internal circulation cooling device and an external circulation cooling device. Heat generated during operation of the shield tunneling machine is exchanged to the internal circulation water through the internal circulation cooling device; the heat exchanger is used for replacing the heat to the external circulating water of the external circulating cooling device; finally, the heat of the external circulating water is replaced into the air and discharged. The traditional external circulating water cooling device has low cooling efficiency and cannot replace heat into air in time.
SUMMERY OF THE UTILITY MODEL
Based on the shield system and the cooling device for the external circulating water, the cooling efficiency of the cooling device for the external circulating water is high, and heat can be replaced into the air in time; therefore, the shield system adopting the cooling device for the external circulating water has high cooling efficiency and can constantly keep a normal working state.
The technical scheme is as follows:
in one aspect, a cooling device for external circulating water of a shield system is provided, which comprises: a circulating water tank; the external circulating water pipeline is used for guiding external circulating water into the circulating water tank; the first temperature detection element is used for detecting the water temperature in the circulating water tank; and the secondary circulation pipeline is used for carrying out secondary circulation cooling on the water in the circulating water tank.
When the external circulating water cooling device of the shield system is used, the internal circulating water replaces heat with external circulating water, and then the external circulating water is guided into the circulating water tank through the external circulating water pipeline, so that the external circulating water can replace the heat with air, and the cooling of the external circulating water is completed; the water temperature in the circulating water tank can rise along with the continuous entering of the external circulating water into the circulating water tank, the water temperature in the circulating water tank is detected in real time by utilizing the first temperature detection element, the dynamic monitoring of the water temperature in the circulating water tank is ensured, and the cooling effect of the external circulating water is prevented from being influenced by the overhigh water temperature in the circulating water tank; when detecting the temperature in the circulating water pond too high, utilize the secondary circulation pipeline to carry out the secondary circulation cooling to the water in the circulating water pond to cool down the processing to the water in the circulating water pond, guarantee that the temperature in the circulating water pond is in the normal range constantly and can not lead to the fact the influence to the cooling of external circulating water, guarantee that the external circulating water can the efficient obtain the cooling.
The technical solution is further explained below:
in one embodiment, the external circulation water pipeline includes an external circulation main pipeline and an external circulation auxiliary pipeline, the secondary circulation pipeline includes a secondary circulation main pipeline and the external circulation auxiliary pipeline, the external circulation auxiliary pipeline is arranged between the external circulation main pipeline and the secondary circulation main pipeline, the external circulation main pipeline and the secondary circulation main pipeline are communicated through the external circulation auxiliary pipeline, the external circulation auxiliary pipeline is provided with a liquid outlet, and the diameter of the external circulation main pipeline and the diameter of the secondary circulation main pipeline are both larger than the diameter of the external circulation auxiliary pipeline.
In one embodiment, the cooling device for the external circulating water of the shield system further comprises a first switch valve, and the first switch valve is used for controlling the conduction and the cut-off of the main secondary circulating water pipeline.
In one embodiment, the cooling device for the external circulation water of the shield system further comprises a first one-way valve, the first one-way valve is arranged in the main external circulation pipe, and the first one-way valve is used for limiting water flowing into the main external circulation pipe from the auxiliary external circulation pipe.
In one embodiment, the external circulation secondary pipe is arranged in a spiral shape or a straight line shape.
In one embodiment, the cooling device for the external circulation water of the shield system further includes a first water pressure detection element for detecting the water pressure in the external circulation water pipeline, and a first pump body for introducing the water in the circulation water tank into the secondary circulation pipeline and making the water pressure in the secondary circulation pipeline greater than or equal to the water pressure in the external circulation water pipeline.
In one embodiment, the cooling device for the external circulation water of the shield system further comprises a second water pressure detection element, and the second water pressure detection element is used for detecting the water pressure in the secondary circulation pipeline.
In one embodiment, the cooling device for the external circulation water of the shield system further comprises a pressure relief element for reducing the water pressure in the secondary circulation line.
In one embodiment, the cooling device for the external circulation water of the shield system further comprises a back-flushing pipeline, and the back-flushing pipeline is communicated with the external circulation water pipeline and the secondary circulation pipeline.
In another aspect, a shield system is provided, which comprises the cooling device for the external circulating water.
When the shield system is used, after heat generated by the shield machine is replaced by the internal circulating water, the internal circulating water replaces the heat to the external circulating water, and the external circulating water is led into the circulating water tank through the external circulating water pipeline, so that the external circulating water can replace the heat to the air, and the cooling of the external circulating water is completed; the water temperature in the circulating water tank can rise along with the continuous entering of the external circulating water into the circulating water tank, the water temperature in the circulating water tank is detected in real time by utilizing the first temperature detection element, the dynamic monitoring of the water temperature in the circulating water tank is ensured, and the cooling effect of the external circulating water is prevented from being influenced by the overhigh water temperature in the circulating water tank; when detecting the temperature in the circulating water pond too high, utilize the secondary circulation pipeline to carry out secondary circulative cooling to the water in the circulating water pond to cool down the processing to the water in the circulating water pond, guarantee that the temperature in the circulating water pond is in the normal range constantly and can not lead to the fact the influence to the cooling of external circulating water, guarantee that the external circulating water can the efficient obtain the cooling, thereby can the efficient with the heat discharge that the shield constructs the machine and produce, make the shield structure system can keep normal operating condition constantly.
Drawings
Fig. 1 is a schematic structural diagram of a cooling device for external circulation water of a shield system according to an embodiment.
Description of reference numerals:
100. the device comprises a circulating water pool, 200, an external circulating water pipeline, 210, an external circulating main pipeline, 300, a secondary circulating pipeline, 310, a secondary circulating main pipeline, 400, a first temperature detection element, 500, an external circulating auxiliary pipeline, 510 and a liquid outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "disposed on," "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured" to, or "fixedly coupled" to another element, it can be removably secured or non-removably secured to the other element. When an element is referred to as being "connected," "pivotally connected," to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the present invention, the terms "first", "second", "third", and the like do not denote any particular quantity or order, but rather are used to distinguish one name from another.
In one embodiment, there is provided an external circulation water cooling device of a shield system, including: a circulating water tank 100; an external circulation water line 200, the external circulation water line 200 being for introducing external circulation water into the circulation tank 100; a first temperature detecting element 400, the first temperature detecting element 400 being used for detecting the temperature of the water in the circulation water tank 100; and a secondary circulation line 300, the secondary circulation line 300 being used for secondary circulation cooling of the water in the circulation tank 100.
When the external circulating water cooling device of the shield system in the embodiment is used, after the heat is replaced by the internal circulating water to the external circulating water, the external circulating water is guided into the circulating water pool 100 through the external circulating water pipeline, so that the external circulating water can replace the heat to the air, and the cooling of the external circulating water is completed; as the external circulating water continuously enters the circulating water pool 100, the water temperature in the circulating water pool 100 rises, and the first temperature detection element 400 is used for detecting the water temperature in the circulating water pool 100 in real time, so that the water temperature in the circulating water pool 100 can be dynamically monitored, and the cooling effect of the external circulating water is prevented from being influenced by overhigh water temperature in the circulating water pool 100; when the water temperature in the circulating water pool 100 is detected to be too high, the secondary circulating pipeline 300 is utilized to carry out secondary circulating cooling on the water in the circulating water pool 100, so that the water in the circulating water pool 100 is cooled, the water temperature in the circulating water pool 100 is ensured to be constantly in a normal range, the cooling of the externally circulating water is not influenced, and the externally circulating water can be efficiently cooled.
The first temperature sensing element 400 may be a temperature sensor installed on the inner wall of the circulation water tank 100, or a temperature measuring probe inserted into the circulation water tank 100, and only needs to be able to sense the temperature of water in the circulation water tank 100.
In one embodiment, the external circulation water pipeline 200 includes a main external circulation pipeline 210 and a secondary external circulation pipeline 500, the secondary circulation pipeline 300 includes a main secondary circulation pipeline 310 and a secondary external circulation pipeline 500, the secondary external circulation pipeline 500 is disposed between the main external circulation pipeline 210 and the main secondary circulation pipeline 310, the main external circulation pipeline 210 and the main secondary circulation pipeline 310 are communicated through the secondary external circulation pipeline 500, the secondary external circulation pipeline 500 is provided with a liquid outlet 510, and the diameter of the main external circulation pipeline 210 and the diameter of the main secondary circulation pipeline 310 are both greater than the diameter of the secondary external circulation pipeline 500. Thus, the flow rate of the external circulating water is accelerated after the external circulating water enters the external circulating auxiliary pipeline 500, and the external circulating water is sprayed out through the liquid outlet 510 on the side wall of the external circulating auxiliary pipeline 500 and enters the circulating pool, so that the spraying distance of the external circulating water is increased, the contact time of the external circulating water and air is prolonged, the heat exchange between the external circulating water and the air is facilitated, and the cooling efficiency of the external circulating water is improved; the water in the circulating water tank 100 sequentially passes through the secondary circulating main pipeline 310 and the external circulating auxiliary pipeline 500, and the diameter of the secondary circulating main pipeline 310 is larger than that of the external circulating auxiliary pipeline 500, so that the flow speed of the water in the circulating water tank 100 is increased after the water enters the external circulating auxiliary pipeline 500, the water in the circulating water tank 100 can exchange heat with the outside more quickly and better, and the cooling efficiency of the water in the circulating water tank 100 is improved; meanwhile, the external circulation water pipeline 200 and the secondary circulation pipeline 300 share the external circulation auxiliary pipeline 500, which is convenient for the pipeline arrangement of the external circulation water cooling device of the shield system, so that the external circulation water cooling device of the shield system has a compact structure and saves space. Along the length direction of extrinsic cycle trunk line 210 or the length direction of secondary cycle trunk line 310, can set up two at least extrinsic cycle auxiliary pipelines 500, communicate extrinsic cycle trunk line 210 and secondary cycle trunk line 310 through two at least extrinsic cycle auxiliary pipelines 500 to increased the area of contact of water with the air, strengthened the cooling effect.
It should be noted that the shape of the liquid outlet 510 may be regular circle, polygon, or irregular fold line; the shape is preferably irregular, so that the state of the circulating water at the time of spraying can be destroyed, and the circulating water is more in contact with the air to exchange heat.
Further, the cooling device for the external circulation water of the shield system further includes a first switching valve (not shown) for controlling the connection and disconnection of the main secondary circulation pipe 310. Thus, when the temperature of the water in the circulating water tank 100 is lower than the first preset temperature, the first switch valve cuts off the secondary circulating main pipe 310, so that the external circulating water is prevented from directly entering the circulating water tank 100 through the secondary circulating main pipe 310, and the cooling effect of the external circulating water is ensured; when the water temperature in the circulating water pool 100 is higher than the first preset temperature and the water in the circulating water pool 100 needs to be subjected to secondary circulating cooling, the first switch valve enables the secondary circulating main pipeline 310 to be conducted, so that the water in the circulating water pool 100 can smoothly enter the secondary circulating main pipeline 310 to be subjected to secondary circulating cooling. The first switching valve may be provided as a pneumatic valve, a hydraulic valve, or other elements capable of controlling the conduction and cutoff of the main secondary circulation pipe 310.
In one embodiment, the cooling device for the external circulation water of the shield system further includes a first check valve (not shown) disposed in the main external circulation pipe 210, the first check valve being used to limit the flow of water from the auxiliary external circulation pipe 500 into the main external circulation pipe 210. So, utilize first check valve to restrict the circulation direction of water, first check valve allows the extrinsic cycle water to flow in extrinsic cycle auxiliary pipeline 500 from extrinsic cycle main pipeline 210 promptly, and in restricting water and flowing in extrinsic cycle main pipeline 210 from extrinsic cycle auxiliary pipeline 500, can restrict the backward flow of water, guarantees that the discharge that extrinsic cycle water can be smooth and easy and cools off. The first one-way valve can be of a spring type or a gravity type, and only the requirement that the flow direction of liquid can be selected is met. The first one-way valve can be arranged close to the liquid outlet end of the main external circulation pipe 210, and the blocking effect is good.
In one embodiment, the cooling apparatus for the outside circulation water of the shield system further includes a first water pressure detecting element (not shown) for detecting the water pressure in the outside circulation water line 200, and a first pump body (not shown) for introducing the water in the circulation water tank 100 into the secondary circulation line 300 and making the water pressure in the secondary circulation line 300 greater than or equal to the water pressure in the outside circulation water line 200. Thus, if it is detected that the water temperature in the circulation water tank 100 is higher than the first preset temperature, the first water pressure detection element is firstly used to detect the water pressure of the external circulation water pipeline 200, and then the first pump body of the secondary circulation pipeline 300 is opened to guide the water in the circulation water tank 100 into the secondary circulation pipeline 300, so that the water pressure in the secondary circulation pipeline 300 is increased to be greater than or equal to the water pressure in the external circulation water pipeline 200, and the water in the circulation water tank 100 can smoothly enter the secondary circulation pipeline 300 to perform secondary circulation cooling. The first water pressure detecting element may be a pressure sensor disposed on the inner wall of the external circulation water pipeline 200, or may be a pressure measuring probe extending into the external circulation water pipeline 200, and only needs to satisfy the requirement of detecting the water pressure in the external circulation water pipeline 200. The first pump body may be a hydraulic pump, centrifugal pump or other pump body capable of pumping a liquid.
Further, the cooling device for the external circulation water of the shield system further includes a second water pressure detecting element (not shown) for detecting the water pressure in the secondary circulation pipeline 300. Therefore, the water pressure of the external circulation water pipeline 200 is detected by the first water pressure detection element, the water pressure of the secondary circulation pipeline 300 is detected by the second water pressure detection element, the difference value between the water pressure of the external circulation water pipeline 200 and the water pressure of the secondary circulation pipeline 300 can be dynamically adjusted, the difference value between the water pressure of the external circulation water pipeline 200 and the water pressure of the secondary circulation pipeline 300 is within a preset pressure difference range, the problem that the external circulation water flows backwards due to the fact that the water pressure of the secondary circulation pipeline 300 is excessive and larger than the water pressure of the external circulation water pipeline 200 is avoided, and the external circulation water can be discharged smoothly to be cooled. The second water pressure detection element may be a pressure sensor disposed on the inner wall of the secondary circulation pipeline 300, or may be a pressure measurement probe extending into the secondary circulation pipeline 300, and only the requirement that the water pressure in the secondary circulation pipeline 300 can be detected is satisfied.
In one embodiment, the cooling device for the external circulation water of the shield system further includes a pressure relief element (not shown) for reducing the water pressure in the secondary circulation line 300. In the process of performing secondary circulation cooling on the water in the circulation water tank 100 by using the secondary circulation pipeline 300, the water temperature in the circulation water tank 100 is reduced, when the temperature difference between the water temperature in the circulation water tank 100 and the first preset temperature is detected to be within the allowable range, the water pressure in the secondary circulation pipeline 300 can be adjusted to slowly reduce the water pressure in the secondary circulation pipeline 300, the problem that the external circulation water pipeline 200 introduces the external circulation water into the circulation water tank 100 to cool the external circulation water due to the fact that the water pressure in the secondary circulation pipeline 300 is continuously greater than the water pressure in the external circulation water pipeline 200 is avoided, the reduction of the water pressure in the secondary circulation pipeline 300 can be continuously performed until the water temperature in the circulation water tank 100 is equal to or less than the first preset temperature, and the first pump body can be stopped from sending the water in the circulation water tank 100 into the secondary circulation pipeline 300; specifically, the water pressure in the secondary circulation pipeline 300 is adjusted to slowly decrease the water pressure in the secondary circulation pipeline 300, the problem that the external circulation water flows backwards is solved by that the water pressure of the water entering the external circulation auxiliary pipeline 500 in the secondary circulation main pipeline 310 is continuously greater than or excessively greater than the water pressure of the external circulation water entering the external circulation auxiliary pipeline 500 in the external circulation main pipeline 210, the external circulation water can be continuously cooled, the difference between the water pressure in the external circulation pipeline 200 and the water pressure in the secondary circulation pipeline 300 can be gradually reduced, the flow rate of the external circulation water entering the external circulation auxiliary pipeline 500 is gradually increased, and the cooling efficiency of the external circulation water is ensured. The pressure relief element may be a pressure relief valve or other element capable of relieving water pressure, which may be disposed near the inlet end of the secondary loop 300.
In one embodiment, the outer circulation secondary pipe 500 is provided in a spiral shape or a straight shape. When the external circulation auxiliary pipeline 500 is arranged in a linear shape, the processing is convenient, and the production cost is low; when outer circulation auxiliary pipe 500 sets up to the spiral, liquid outlet 510 distributes along spiral orbit direction, can further increase the area of contact of water with the air, and the contact time of extension water with the air, the cooling effect of extrinsic cycle water is good, and secondary circulative cooling's effect is also good.
On the basis of any of the above embodiments, the cooling device for the external circulation water of the shield system further includes a back-flushing pipeline (not shown), and the back-flushing pipeline is communicated with both the external circulation water pipeline 200 and the secondary circulation pipeline 300. Thus, the back flushing pipeline is used for supplying the flushing water into the external circulating pipeline 200 and the secondary circulating pipeline 300 to flush the external circulating pipeline, and blockage caused by overlong use time is avoided.
In one embodiment, a shield system is further provided, which comprises the cooling device for the external circulating water in any one of the above embodiments.
When the shield system of the embodiment is used, after the heat generated by the shield machine is replaced by the internal circulating water, the internal circulating water replaces the heat by the external circulating water, and the external circulating water is led into the circulating water pool 100 through the external circulating water pipeline, so that the external circulating water can replace the heat by air, and the cooling of the external circulating water is completed; as the external circulating water continuously enters the circulating water pool 100, the water temperature in the circulating water pool 100 rises, and the first temperature detection element 400 is used for detecting the water temperature in the circulating water pool 100 in real time, so that the water temperature in the circulating water pool 100 can be dynamically monitored, and the cooling effect of the external circulating water is prevented from being influenced by overhigh water temperature in the circulating water pool 100; when the water temperature in the circulating water pool 100 is detected to be too high, the secondary circulating pipeline 300 is utilized to carry out secondary circulating cooling on the water in the circulating water pool 100, so that the water in the circulating water pool 100 is cooled, the water temperature in the circulating water pool 100 is ensured to be constantly in a normal range, the cooling of external circulating water is not influenced, the external circulating water is ensured to be efficiently cooled, the heat generated by the shield tunneling machine can be efficiently discharged, and the shield tunneling system can constantly keep a normal working state.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples represent only a few embodiments of the present invention, which are described in detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. The utility model provides a shield constructs cooling device of outer circulating water of system which characterized in that includes:
a circulating water tank;
the external circulating water pipeline is used for guiding external circulating water into the circulating water tank;
the first temperature detection element is used for detecting the water temperature in the circulating water tank; and
and the secondary circulation pipeline is used for carrying out secondary circulation cooling on the water in the circulating water tank.
2. The cooling device for the external circulation water of the shield system according to claim 1, wherein the external circulation water pipeline includes an external circulation main pipeline and an external circulation auxiliary pipeline, the secondary circulation pipeline includes a secondary circulation main pipeline and an external circulation auxiliary pipeline, the external circulation auxiliary pipeline is disposed between the external circulation main pipeline and the secondary circulation main pipeline, the external circulation main pipeline and the secondary circulation main pipeline are communicated through the external circulation auxiliary pipeline, the external circulation auxiliary pipeline is provided with a liquid outlet, and the diameter of the external circulation main pipeline and the diameter of the secondary circulation main pipeline are both greater than the diameter of the external circulation auxiliary pipeline.
3. The cooling device for the external circulation water of the shield system according to claim 2, further comprising a first switch valve for controlling the on/off of the main secondary circulation pipe.
4. The cooling device for the externally circulating water of the shield system according to claim 2, further comprising a first check valve disposed in the main externally circulating pipe, the first check valve being configured to restrict the flow of water from the auxiliary externally circulating pipe into the main externally circulating pipe.
5. The cooling device for the external circulation water of the shield system according to claim 2, wherein the external circulation secondary pipeline is arranged in a spiral shape or a straight line shape.
6. The cooling apparatus for circulating water outside a shield tunneling system according to any one of claims 1 to 5, further comprising a first water pressure detecting element for detecting a water pressure inside the external circulating water line, and a first pump for introducing water inside the circulating water pool into the secondary circulating line and making the water pressure inside the secondary circulating line greater than or equal to the water pressure inside the external circulating water line.
7. The cooling device for the external circulation water of the shield system according to claim 6, further comprising a second water pressure detecting element for detecting the water pressure in the secondary circulation line.
8. The cooling device for the external circulation water of the shield system according to claim 7, further comprising a pressure relief element for reducing the water pressure in the secondary circulation line.
9. The cooling device for the external circulation water of the shield system according to any one of claims 1 to 5, further comprising a back-flushing pipeline, wherein the back-flushing pipeline is communicated with both the external circulation water pipeline and the secondary circulation pipeline.
10. A shield system comprising a cooling device for the circulating water according to any one of claims 1 to 9.
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| CN201921168487.9U CN210768771U (en) | 2019-07-23 | 2019-07-23 | Shield system and cooling device for external circulating water thereof |
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| CN201921168487.9U CN210768771U (en) | 2019-07-23 | 2019-07-23 | Shield system and cooling device for external circulating water thereof |
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| CN210768771U true CN210768771U (en) | 2020-06-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486024A (en) * | 2019-07-23 | 2019-11-22 | 中铁建华南建设有限公司 | The external circulating water-cooled of shield system but method and its cooling device |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486024A (en) * | 2019-07-23 | 2019-11-22 | 中铁建华南建设有限公司 | The external circulating water-cooled of shield system but method and its cooling device |
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