Automatic water replenishing device of shale gas output water vapor boiler

Abstract

The utility model belongs to the field of shale gas exploitation, and relates to an automatic water replenishing device for a shale gas output steam boiler, which comprises a softened water tank, a water outlet of the softened water tank is connected with a water replenishing port of the steam boiler, the water outlet is provided with two passages, a first passage is connected with an electromagnetic valve, a remote liquid level meter is mounted on the softened water tank, and a second passage is mounted on the remote liquid level meter. The liquid level meter is remotely connected with the electromagnetic valve; the second passage is connected with the gate valve or the butterfly valve, a support is arranged on the inner side wall of the softened water tank, a lever is arranged on the support, a connecting rod is hinged to the connecting end of the lever, and the working end of the lever can make contact with a switch of the gate valve or the butterfly valve in the moving process; a floater penetrates through the connecting rod, and a lantern ring capable of limiting vertical movement of the connecting rod is arranged on the inner side wall of the softened water tank.

Description

TECHNICAL FIELD

[0001] The utility model belongs to shale gas exploitation processing technical field especially relates to a shale gas output water steam boiler automatic water replenishing device. BACKGROUND

[0002] At present, the heat relied on by the evaporation crystallization system of shale gas water treatment station is mainly provided by steam boiler. In the operation process of steam boiler, in order to maintain its stable working state, softened water must be continuously replenished. However, the current purification device of softened water and the starting and control of boiler softened water replenishing tank still rely on manual operation. This means that a staff needs to pay attention to the running condition of the boiler at all times, and manually starts the water replenishing device and opens the corresponding valve according to the actual situation to ensure the timely replenishment of softened water.

[0003] Although the automatic water replenishing device controlled by solenoid valve has appeared on the market, this device can improve the automation degree of the water replenishing process to a certain extent, but it faces a problem that cannot be ignored in actual application. That is, in the process of shale gas exploitation, due to the special magnetic environment of the local area, the solenoid valve may be interfered and fail. Once the solenoid valve fails, the steam boiler will not be able to obtain the required softened water replenishment in time, which will directly affect the output efficiency of shale gas, and even may cause immeasurable loss to the entire production process.

[0004] Therefore, how to ensure the stable operation of the steam boiler while effectively avoiding the problem of solenoid valve failure due to magnetic interference has become a big problem to be solved for the evaporation crystallization system of shale gas water treatment station. INVENTION CONTENTS

[0005] The utility model provides a reliable shale gas output water steam boiler automatic water replenishing device, solves the problem of delayed boiler water replenishment caused by solenoid valve failure.

[0006] The utility model scheme is: a shale gas output water steam boiler automatic water replenishing device, including softened water tank, the water outlet of the softened water tank is connected with the water replenishing port of steam boiler, the water outlet is equipped with two passages, the first passage is connected with solenoid valve, the remote transmission liquid level meter is installed on the softened water tank, and the liquid level meter is remotely connected with solenoid valve;The second passage is connected with gate valve or butterfly valve, the support is arranged on the inner side wall of the softened water tank, the lever is arranged on the support, the connecting end of the lever is hinged with connecting rod, and the working end of the lever can be contacted with the switch of gate valve or butterfly valve in the movement process;The float is penetrated on the connecting rod, and the sleeve ring that can limit the vertical movement of the connecting rod is arranged on the inner side wall of the softened water tank.

[0007] Beneficial effects: double water supplement guarantee: the device realizes automatic water supplement through electromagnetic valve, and mechanical water supplement (through float, lever, gate valve or butterfly valve) is arranged, so that when the electromagnetic valve is disabled due to magnetic interference, the mechanical water supplement can be used as a backup solution, so that the steam boiler can continuously obtain softened water, and the output efficiency is avoided to be affected. Remote monitoring and control: the remote connection of the remote liquid level meter and the electromagnetic valve enables the operator to remotely monitor the liquid level of the softened water tank in real time, and remotely control the opening and closing of the electromagnetic valve according to the needs, thereby improving the convenience and safety of operation. The utility model discloses a float, a connecting rod, a lever and a valve cooperate to realize the opening or closing of the valve through the mechanical mode at the set liquid level, and the problem of delayed boiler water supplement caused by magnetic valve failure is avoided.

[0008] Further, the float is fixedly connected with the connecting rod, or the float is slidably connected with the connecting rod, and the connecting rod is provided with an upper limit plate and a lower limit plate for limiting the moving distance of the float. The fixed connection of the float and the connecting rod ensures the stability of water supplement, and the slidable connection allows the float to move up and down within a certain range. Through the setting of the upper limit plate and the lower limit plate, the target distance of the float moving up or down can be set, so that the float moves to the target height to drive the connecting rod to move up and down, and then triggers the butterfly valve or the gate valve, thereby meeting the needs of different working conditions.

[0009] Further, the water outlet is provided with a Y-shaped pipe, wherein a first branch pipe is a first passage, and a second branch pipe is a second passage. The design of the Y-shaped pipe makes the first passage and the second passage converge at the water outlet, so that the structure is compact, the pipeline connection points are reduced, the leakage risk is reduced, and the subsequent maintenance and repair work is also facilitated.

[0010] Further, the float is a plastic ball with a metal ball core inside: the plastic ball is light and corrosion-resistant, and the metal ball core inside increases the weight of the float, so that the float can respond to the water level change faster in water, and the sensitivity and reliability of the water supplement system are improved.

[0011] Further, the opening and closing of the gate valve or the butterfly valve includes an opening plate and a closing plate, and the opening plate and the closing plate are located on the movement track of the working end of the lever, so that the lever can accurately trigger the opening and closing of the gate valve or the butterfly valve when moving, and the problems of water supplement failure or excessive water supplement caused by inaccurate action are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the shale gas production water steam boiler automatic water supplement device. DETAILED DESCRIPTION

[0013] The following will be further described in detail through specific embodiments:

[0014] The reference signs in the attached drawings of the specification include: softened water tank 1, Y-shaped pipe 2, electromagnetic valve 3, butterfly valve 4, opening plate 4-1, closing plate 4-2, lever 5, collar 6, connecting rod 7, float 8.

[0015] Embodiment 1: As shown in the figure, a shale gas production water steam boiler automatic water replenishing device mainly includes softened water tank 1, electromagnetic valve 3, remote liquid level meter, butterfly valve 4, lever 5, connecting rod 7, float 8 and collar 6 and other key components. Figure 1

[0016] The water outlet of the softened water tank 1 in the device is directly connected with the steam boiler water replenishing port to ensure that the softened water can be smoothly delivered into the steam boiler. The Y-shaped pipe 2 is installed at the water outlet, the main pipe of the Y-shaped pipe 2 is connected with the water outlet, the first branch pipe is connected with the electromagnetic valve 3 as the first passage, and the electromagnetic valve 3 controls the opening and closing by receiving the signal from the remote liquid level meter, thereby realizing the accurate control of the water level in the softened water tank 1. The remote liquid level meter is installed on the softened water tank 1, can monitor the water level in the softened water tank 1 in real time, and remotely transmits the data to the electromagnetic valve 3, thereby realizing the remote monitoring and automatic control of the water replenishing process.

[0017] The second branch pipe is connected with the butterfly valve 4 as the second passage, which is a standby water replenishing channel, and the opening and closing of the butterfly valve 4 includes the opening plate 4-1 and the closing plate 4-2. The bracket and the collar 6 are arranged on the inner side wall of the softened water tank, the connecting rod 7 is located in the collar 6, the collar 6 plays a guiding role when moving up and down on the connecting rod 7, and the middle segment of the lever 5 is hinged to the inner wall of the softened water tank 1. Figure 1 The connecting end (right end) of the lever 5 is hinged to the upper end of the connecting rod 7 (the specific hinging mode is that the connecting end of the lever 5 is provided with a strip-shaped hole extending in the axial direction, and the upper end of the connecting rod 7 is provided with a round pin which is matched with the strip-shaped hole), when the connecting rod 7 moves up and down, the lever 5 is swung around the hinging point of the middle segment, at this time, the movement track of the connecting end of the lever 5 is arc-shaped, and due to the cooperation of the strip-shaped hole and the round pin, the connecting end of the lever 5 and the connecting rod 7 will not be stuck in the set moving range. The working end (left end) of the lever 5 is the free end, and the opening plate 4-1 and the closing plate 4-2 of the butterfly valve 4 are located on the arc-shaped movement track of the working end of the lever 5. Figure 1

[0018] The lower end of the connecting rod 7 is fixed with a float 8, the float 8 is a plastic ball with a metal ball core inside, and the float 8 floats up and down with the water level, thereby driving the movement of the lever 5. When the water level rises to a certain height, the float 8 will drive the working end of the lever 5 to move, contact with the opening and closing of the butterfly valve 4, and realize the mechanical water replenishing.

[0019] ​​The above only is the embodiment of the present application, and the known specific technical solutions and or or common knowledge of characteristics in the scheme are not described in detail here. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope required by the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. An automatic water supply device for a shale gas production steam boiler, comprising a softened water tank, wherein the outlet of the softened water tank is connected to the water supply inlet of the steam boiler, characterized in that: The outlet has two passages. The first passage is connected to a solenoid valve, and a remote level gauge is installed on the softened water tank, which is remotely connected to the solenoid valve. The second passage is connected to a gate valve or butterfly valve. A bracket is provided on the inner wall of the softened water tank, and a lever is provided on the bracket. The connecting end of the lever is hinged to a connecting rod. The working end of the lever can contact the opening and closing of the gate valve or butterfly valve during movement. A float is passed through the connecting rod, and a collar is provided on the inner wall of the softened water tank to restrict the vertical movement of the connecting rod.

2. The automatic water replenishment device for a shale gas production steam boiler according to claim 1, characterized in that: The float is fixedly connected to the connecting rod; or the float is slidably connected to the connecting rod, and the connecting rod is provided with an upper limit plate and a lower limit plate to limit the movement distance of the float.

3. The automatic water replenishment device for a shale gas production steam boiler according to claim 2, characterized in that: The outlet is equipped with a Y-shaped pipe, wherein the first branch pipe is the first passage and the second branch pipe is the second passage.

4. The automatic water replenishment device for a shale gas production steam boiler according to claim 3, characterized in that: The float is a plastic ball with a metal core inside.

5. An automatic water replenishment device for a shale gas production steam boiler according to claim 4, characterized in that: The gate valve or butterfly valve includes an opening plate and a closing plate, both of which are located on the movement trajectory of the working end of the lever.

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