Steam pipeline drainage structure capable of cooling and directly discharging

Abstract

The utility model discloses a steam pipeline drainage structure capable of achieving cooling and direct drainage. The steam pipeline drainage structure comprises a condensation drainage pipe, a cooling water tank, a cooling water removal pipe and a cooling water return pipe. The cooling water tank is filled with cooling water; one end of the cooling water-removing pipe is communicated with the cooling water tank, the other end of the cooling water-removing pipe is communicated with the condensation water-discharging pipe, and the cooling water-removing pipe or the cooling water tank is provided with a cooling water pump used for conveying cooling water to the condensation water-discharging pipe; a proportional valve is arranged on the cooling water return pipe, one end of the cooling water return pipe is communicated with an inlet of the cooling water tank, the other end of the cooling water return pipe is communicated with the proportional valve, and the proportional valve is located on the downstream of the connecting point of the cooling water removal pipe and the condensation water drainage pipe. According to the steam pipeline drainage structure, condensate water is cooled in a water cooling mode, a large water well does not need to be arranged, the occupied space can be reduced, and the construction cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a steam pipe network system, concretely relates to a steam pipeline drainage structure of temperature reduction direct discharge. BACKGROUND

[0002] With the development of the times, energy saving and consumption reduction has become the consensus of people. In recent years, in order to realize the goal of energy saving and emission reduction, a series of policy documents have been successively introduced from the state to local governments, and a series of policy documents have been successively introduced from the state to local governments, and vigorously support industrial parks to carry out central heating. Under the pressure of energy saving and emission reduction and the encouragement and support of policy documents, industrial parks have also successively constructed steam pipe networks to solve the heat demand of enterprises in the park.

[0003] In the existing base heating pipe network engineering, the main network is about 7.5 kilometers long, and is laid in the mode of "mainly buried and supplemented by overhead" (the working pipe diameter is DN600, and the outer protective pipe diameter is DN1120). The main network transports the superheated steam with a design pressure of 1.6 MPa and a temperature of 300 DEG C. The main network pipeline has 33 drainage holes in total, wherein the No. 12, No. 25 and No. 29 drainage holes are steel deep well drainage wells, and the deepest well is up to 8 meters deep. Although the existing drainage well adopts an automatic drainage device, can automatically control the submersible pump and the drainage valve to carry out drainage work, reduces the security risk, and the submersible pump does not need to be in high-temperature condensed water for a long time, reduces the risk of short circuit and dry burning of the submersible pump, for example, the utility model patent disclosed in the authorized announcement No. CN222209918U is an automatic drainage device for steam main network drainage deep well.

[0004] However, the existing drainage well still has the following shortcomings:

[0005] The temperature is reduced by the natural cooling mode, and a plurality of large water wells must be provided to store the condensed water, which not only occupies a large space, but also has high construction cost. UTILITY MODEL CONTENTS

[0006] The utility model aims at overcoming the above-mentioned problems, and provides a steam pipeline drainage structure capable of reducing temperature and direct discharge, which cools the condensed water in a water cooling mode, does not need to be equipped with a large water well, and can reduce the occupied space and the construction cost.

[0007] The utility model aims at overcoming the above-mentioned problems, and provides a steam pipeline drainage structure capable of reducing temperature and direct discharge, which cools the condensed water in a water cooling mode, does not need to be equipped with a large water well, and can reduce the occupied space and the construction cost.

[0008] A steam pipeline drainage structure capable of reducing temperature and direct discharge, comprising a condensed water drainage pipe, a cooling water tank, a cooling water drainage pipe and a cooling water return pipe.

[0009] The cooling water tank is internally provided with cooling water;

[0010] One end of the cooling drain pipe is connected to a cooling water tank, and the other end of the cooling drain pipe is connected to a condensate drain pipe.

[0011] A proportional valve is arranged on the cooling return water pipe, one end of the cooling return water pipe is connected to an inlet of the cooling water tank, and the other end of the cooling return water pipe is connected to the proportional valve, and the proportional valve is arranged downstream of a connection point of the cooling drain pipe and the condensate drain pipe.

[0012] The working principle of the steam pipeline drainage structure capable of cooling and directly discharging is as follows:

[0013] During work, the condensate water of the steam pipeline is collected through the condensate drain pipe and is discharged to a designated position, in the process, the cooling water in the cooling water tank is transported to the condensate drain pipe through the cooling drain pipe by the cooling water pump, the condensate water in the condensate drain pipe is cooled by the cooling water, and becomes a non-high-temperature water flow with a temperature between the condensate water and the condensate water (by controlling the flow ratio of the cooling water and the condensate water, the temperature after cooling can be controlled to meet the discharge standard), the non-high-temperature water flow passes through the proportional valve and is divided into two water flows, one of which is directly discharged, and the other of which flows back to the cooling water tank through the cooling return water pipe.

[0014] In an preferred embodiment of the utility model, a drain valve that can automatically discharge the condensate water is arranged on the condensate drain pipe, and the drain valve is arranged upstream of a connection point of the cooling drain pipe and the condensate drain pipe.

[0015] In an preferred embodiment of the utility model, the cooling water tank comprises a buffer water tank and a water supply tank, the buffer water tank and the water supply tank are connected through a valve or a pipeline, one end of the cooling drain pipe is connected to the water supply tank, and one end of the cooling return water pipe is connected to the buffer water tank. Through the above structure, part of the water flow after cooling is transported to the buffer water tank and is cooled therein, so that the two kinds of water can not be directly mixed, and the cooling effect is improved; when the water supply tank is short of water, the valve or the pipeline between the buffer water tank and the water supply tank is opened, and the low-temperature water flow is supplemented to the water supply tank and is used as the cooling water.

[0016] Further, a first water level sensor is arranged in the buffer water tank, and when the first water level sensor detects that the buffer water tank is full of water, the proportional valve is closed to stop the water flow of the cooling return water pipe.

[0017] Further, a second water level sensor is arranged in the water supply tank, and when the second water level sensor detects that the water level of the water supply tank is too low, the valve or the pipeline between the buffer water tank and the water supply tank is opened.

[0018] One preferred scheme of the utility model, wherein, the cooling water tank is equipped with heat dissipation structure for heat dissipation to the recycled water flow.

[0019] One preferred scheme of the utility model, wherein, the condensation drain pipe, cooling drain pipe and cooling backwater pipe are spiral structure or disc structure, for improving heat dissipation performance.

[0020] Further, the outer wall of condensation drain pipe, cooling drain pipe and cooling backwater pipe is equipped with heat dissipation fin.

[0021] The utility model has the following beneficial effects compared with prior art:

[0022] 1, the steam pipeline drainage structure of the utility model adopts the mode of water cooling to cool the condensate, need not be equipped with large water well, can reduce the floor space and reduce the construction cost.

[0023] 2, the utility model adopts cooling water to condense the condensate, can accelerate the condensate cooling, satisfies the discharge requirement. DRAWINGS

[0024] Figure 1 It is the structure diagram of the first kind of implementation of the steam pipeline drainage structure of the utility model of cooling direct discharge.

[0025] Figure 2 It is the structure diagram of the second kind of implementation of the steam pipeline drainage structure of the utility model of cooling direct discharge.

[0026] Figure 3 It is the structure diagram of the third kind of implementation of the steam pipeline drainage structure of the utility model of cooling direct discharge. DETAILED DESCRIPTION

[0027] In order to make those skilled in the art well understand the technical scheme of the utility model, the utility model is further described below in conjunction with examples and drawings, but the implementation of the utility model is not limited to this.

[0028] In conjunction with Figure 1 The steam pipeline drainage structure of cooling direct discharge of the utility model, including condensation drain pipe 1, cooling water tank, cooling drain pipe 2 and cooling backwater pipe 3, wherein, the condensation drain pipe 1 is equipped with the drainage valve 4 that can automatically discharge condensate, and the drainage valve 4 is located at the upstream of the connecting point of cooling drain pipe 2 and condensation drain pipe 1.

[0029] In conjunction with Figure 1The cooling water tank is internally provided with cooling water, and comprises a buffer water tank 5 and a water supply tank 6, the buffer water tank 5 and the water supply tank 6 are connected through a valve, one end of the cooling water outlet pipe 2 is communicated with the water supply tank 6, and one end of the cooling water return pipe 3 is communicated with the buffer water tank 5. Through the above structure, the part of the water flow after cooling is transported to the buffer water tank 5 and cooled, so that the two kinds of water are prevented from being directly mixed, and the cooling effect is improved; when the water supply tank 6 is short of water, the valve between the buffer water tank 5 and the water supply tank 6 is opened, the low-temperature water flow is supplemented to the water supply tank 6, and is used as cooling water.

[0030] Further, the buffer water tank 5 is internally provided with a first water level sensor, when the first water level sensor detects that the buffer water tank 5 is full of water, the proportional valve 8 is closed to stop the water flow of the cooling water return pipe 3.

[0031] Further, the water supply tank 6 is internally provided with a second water level sensor, when the second water level sensor detects that the water level of the water supply tank 6 is too low, the valve between the buffer water tank 5 and the water supply tank 6 is opened.

[0032] In combination Figure 1 The other end of the cooling water outlet pipe 2 is communicated with the condensation drain pipe 1, the cooling water tank is provided with a cooling water pump 7 for transporting the cooling water to the condensation drain pipe 1, the cooling water return pipe 3 is provided with a proportional valve 8, the other end of the cooling water return pipe 3 is communicated with the proportional valve 8, and the proportional valve 8 is located downstream of the connecting point of the cooling water outlet pipe 2 and the condensation drain pipe 1.

[0033] Further, the cooling water tank is internally provided with a heat dissipation structure for dissipating the heat of the recycled water flow.

[0034] Further, the condensation drain pipe 1, the cooling water outlet pipe 2 and the cooling water return pipe 3 are all in spiral or disc structures, so as to improve the heat dissipation performance.

[0035] Further, the outer walls of the condensation drain pipe 1, the cooling water outlet pipe 2 and the cooling water return pipe 3 are provided with heat dissipation fins.

[0036] In combination Figure 1 The working principle of the steam pipeline drainage structure capable of cooling and directly discharging of the embodiment is as follows:

[0037] In operation, the condensed water from the steam pipe is collected through the condensed water drain pipe 1 and is led to a designated location for discharge. In this process, the cooling water in the cooling water tank is delivered to the condensed water drain pipe 1 through the cooling water pipe 2 by the cooling water pump 7, and the condensed water in the condensed water drain pipe 1 is cooled by the cooling water, becoming a non-high-temperature water flow with a temperature between that of the condensed water and the cooling water (by controlling the flow ratio of the cooling water and the condensed water, the temperature after cooling can be controlled to meet the discharge standard). The non-high-temperature water flow flows down through the proportional valve 8 and is divided into two water flows by the proportional valve 8, one of which is directly discharged, and the other of which flows back to the cooling water tank through the cooling water return pipe 3.

[0038] Embodiment 2

[0039] In combination Figure 2 Unlike Embodiment 1, this embodiment does not provide a cooling water pump, but uses a Venturi tube 9 to mix the cooling water with the condensed water.

[0040] Embodiment 3

[0041] In combination Figure 3 Unlike Embodiment 1, this embodiment is connected between the buffer water tank 5 and the water supply tank 6 through a pipe.

[0042] The above is a preferred embodiment of the present application, but the embodiments of the present application are not limited by the above, and any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present application are equivalent replacement methods and are included in the protection scope of the present application.

Claims

1. A steam pipe drainage structure capable of reducing temperature and direct discharge, characterized in that, The condensate drain pipe, the cooling water tank, the cooling drain pipe and the cooling return pipe; The cooling water tank is provided with cooling water; One end of the cooling drain pipe is connected to the cooling water tank, and the other end of the cooling drain pipe is connected to the condensate drain pipe, and the cooling drain pipe or the cooling water tank is provided with a cooling water pump for delivering cooling water to the condensate drain pipe; The cooling return pipe is provided with a proportional valve, one end of the cooling return pipe is connected to the inlet of the cooling water tank, and the other end of the cooling return pipe is connected to the proportional valve, and the proportional valve is located downstream of the connection point of the cooling drain pipe and the condensate drain pipe.

2. The steam pipe drainage structure according to claim 1, wherein, The condensate drain pipe is provided with a drain valve for automatically draining condensate, and the drain valve is located upstream of the connection point of the cooling drain pipe and the condensate drain pipe.

3. The steam pipe drainage structure according to claim 1, wherein, The cooling water tank comprises a buffer tank and a water supply tank, the buffer tank and the water supply tank are connected through a valve or a pipeline, one end of the cooling drain pipe is connected to the water supply tank, and one end of the cooling return pipe is connected to the buffer tank.

4. The steam pipe drainage structure according to claim 3, wherein, The buffer tank is provided with a first water level sensor, and when the first water level sensor detects that the buffer tank is full of water, the proportional valve closes the water flow of the cooling return pipe.

5. The steam pipe drainage structure according to claim 3, wherein, The water supply tank is provided with a second water level sensor, and when the second water level sensor detects that the water level of the water supply tank is too low, the valve or the pipeline between the buffer tank and the water supply tank is opened.

6. The steam pipe drainage structure according to claim 1, wherein The cooling water tank is provided with a heat dissipation structure for dissipating heat of the recovered water flow.

7. The steam pipe drainage structure according to claim 1, wherein The condensate drain pipe, the cooling drain pipe and the cooling return pipe are spiral structures or disc structures.

8. The steam pipe drainage structure according to claim 1, wherein, The outer wall of the condensate drain pipe, the cooling drain pipe and the cooling return pipe is provided with heat dissipation fins.

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