Pressure constant mechanism for large-temperature-difference small-flow heat exchange station

Abstract

The utility model discloses a pressure constant mechanism for a large-temperature-difference small-flow heat exchange station, which belongs to the technical field of heat exchange, and comprises a pressure tank mechanism and a piston mechanism, the piston mechanism for separating gas from liquid is arranged in the pressure tank mechanism, and the piston mechanism is arranged in the pressure tank mechanism. A pressure relief opening used for discharging water is formed in the bottom of the front end of the pressure tank mechanism, and a gate valve mechanism is arranged at the front end of the pressure relief opening. Through the arrangement of the pressure tank mechanism and the piston mechanism, the water pressure is adjusted, the water pressure is prevented from being too large or too small, and air dissolved into a water body is reduced, so that corrosion of a waterway pipe wall and breeding of algae and microorganisms in the water body are slowed down, and the service life of the water body is prolonged. Through the arrangement of the piston mechanism, the gate valve mechanism, the adjusting mechanism and the traction mechanism, when the water pressure is too large, the device can discharge redundant water, so that the device is prevented from exploding or a pipeline is prevented from bursting, and the safety of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchange technical field especially is related to a big temperature difference small flow heat exchange station pressure constant mechanism. BACKGROUND

[0002] The working principle of heat exchange station involves heat exchange process, the high temperature medium of primary heat supply network passes through heat exchanger and delivers heat to secondary heat supply network, and the secondary heat supply network delivers heat to user end, and in the heat exchange station, whether it is primary heat supply network or secondary heat supply network, needs to access pressure constant mechanism to guarantee water pressure stability, otherwise water pressure is too big to cause component burst damage, and water pressure is too small to cause water flow discontinuity and affect heat exchange efficiency.

[0003] In the prior art, the water pressure monitor, PLC automatic control cabinet and frequency conversion cabinet are often used to adjust the water pressure in the large flow heat exchange station, and in the small flow heat exchange station, the use of such pressure constant mechanism has the problem of high cost, therefore many small flow heat exchange stations use pressure tank to adjust and stabilize water pressure, and when the existing pressure tank is used, water body is in large area contact with air in the tank body, air is mixed into water body, on the one hand, air volume is reduced, on the other hand, microorganism in water body is accelerated to breed, and the existing pressure tank does not have automatic pressure relief mechanism for easy adjustment, when water pressure is too large and exceeds the adjustment range and pressure resistance of the pressure tank, the tank body has high explosion risk, and such explosion accident occurs in many small flow heat exchange stations.

[0004] Therefore, it is urgent to provide a pressure constant mechanism for big temperature difference small flow heat exchange station to solve the above problems. INVENTION CONTENTS

[0005] The utility model wants to overcome the technical problems of the prior art, and provide a pressure constant mechanism for big temperature difference small flow heat exchange station.

[0006] To solve the above technical problems, one technical scheme of the utility model is provided: a pressure constant mechanism for big temperature difference small flow heat exchange station, which comprises a pressure tank mechanism and a piston mechanism, the inside of the pressure tank mechanism is provided with the piston mechanism for separating gas and liquid, the front end bottom of the pressure tank mechanism is provided with a pressure relief port for discharging water body, and the front end of the pressure relief port is provided with a gate valve mechanism.

[0007] The gate valve mechanism is provided with an adjusting mechanism for adjusting pressure relief pressure.

[0008] The piston mechanism is provided with a pulling mechanism for pulling the adjusting mechanism and the gate valve mechanism.

[0009] The utility model further sets up: the pressure tank mechanism includes the jar body, the one side bottom of jar body is provided with the water inlet, the other side bottom of jar body is provided with the water outlet, the top of jar body is fixed with the sealing sleeve.

[0010] Through the above technical scheme, the jar body is of stainless steel material, has the characteristics of firmness, durability and corrosion resistance, the water inlet can be connected with the water inlet pipeline, the water outlet can be connected with the water outlet pipeline, and the sealing sleeve can prevent air leakage in the jar body.

[0011] The utility model further sets up: the piston mechanism includes the piston rod of activity connection in the inside of sealing sleeve, the bottom of piston rod is fixed with the piston body, the outside of piston body is provided with the sealing ring, the top of piston rod is fixed with the connecting arm.

[0012] Through the above technical scheme, the piston body divides the jar body into two chambers, the upper chamber contains gas, and the upper chamber has air tightness, the lower chamber contains water, when the water pressure increases, the water pressure will push the piston body upwards, so that the gas chamber is compressed, the volume of the water chamber increases, thereby storing the excess water in the jar body, when the water pressure decreases, the pressure of the gas is greater than the water pressure, which will squeeze the stored water in the jar body into the water system, so that the water pressure increases, thereby adjusting and stabilizing the water pressure, in this process, the sealing sleeve can limit the piston rod in the radial direction, thereby improving the stability of the piston body, since the piston body and the sealing ring separate the water and the gas, air dissolution into the water can be avoided, thereby slowing down the oxidation of the pipeline, and the growth of algae and microorganisms on the water and the pipe wall can be reduced.

[0013] The utility model further sets up: the gate valve mechanism includes the valve pipe of sealing connection in the front end of pressure release, be provided with the valve body on the valve pipe, the front end of valve pipe is provided with the liquid discharge port.

[0014] Through the above technical scheme, the inside of the valve body is provided with a vertically movable valve plate, when the valve plate falls down, the gate valve is closed, when the valve plate is lifted up, the gate valve is opened, and the liquid discharge port can be connected with a liquid discharge pipe for discharging excess liquid when the pressure is too high.

[0015] The utility model further sets up: the adjusting mechanism includes the adjusting rod of activity connection in the top of valve body, a plurality of slot holes are set up on the adjusting rod along the vertical direction equidistance.

[0016] Through the above technical scheme, the bottom of the adjusting rod is fixed with the valve plate in the valve body, when the adjusting rod is lifted up, the valve plate is also lifted up, thereby opening the gate valve mechanism.

[0017] The utility model further sets up: the pulling mechanism includes the steel wire rope of one end with connecting arm fixed, the other end of steel wire rope is connected with the limit block, the limit block is fixed with the pin.

[0018] Through the technical scheme, the pin is inserted in the slot hole of the adjusting rod, when the water pressure is too large, the piston body pushes the connecting arm to lift to a certain height, the steel wire rope fixed with the connecting arm pulls the pin, thereby lifting the adjusting rod, so that the gate valve mechanism is opened, and the opening threshold of the gate valve mechanism can be adjusted by inserting the pin in different slot holes.

[0019] The utility model further sets up: the end of pin is provided with lock piece, lock piece and pin are closely cooperating rotation connection.

[0020] Through the technical scheme, the rotation resistance of the lock piece and the pin is large, when the pin is pulled, the lock piece can effectively prevent the pin from separating from the slot hole, when the staff needs to pull out the pin, the lock piece can be manually rotated by ninety degrees, and the pin can be taken out from the slot hole.

[0021] The utility model has the advantages of:

[0022] 1. The utility model discloses a pressure tank mechanism and the setting of piston mechanism realize the adjustment of water pressure, avoid too large or too small water pressure, and reduce the air dissolved in water body, thereby slow down the corrosion of waterway pipe wall and the breeding of algae and microorganism in water body;

[0023] 2. The utility model discloses a piston mechanism, gate valve mechanism, adjusting mechanism and the setting of pulling mechanism, when water pressure is too large, the device can discharge the excess water body, thereby avoiding the explosion of the device or the burst of pipeline, and the safety of the device is improved. DRAWINGS

[0024] Figure 1 It is the first view structure diagram of the utility model;

[0025] Figure 2 It is the second view structure diagram of the utility model;

[0026] Figure 3 It is the partial structure drawing of piston mechanism and pulling mechanism of the utility model;

[0027] Figure 4 It is the partial structure drawing of gate valve mechanism and adjusting mechanism of the utility model;

[0028] Figure 5 It is the partial structure drawing of adjusting mechanism and pulling mechanism of the utility model.

[0029] In the figure: 1, pressure tank mechanism; 101, tank body; 102, water inlet; 103, water outlet; 104, sealing sleeve; 2, piston mechanism; 201, piston rod; 202, piston body; 203, sealing ring; 204, connecting arm; 3, pressure relief port; 4, gate valve mechanism; 401, valve pipe; 402, valve body; 403, liquid discharge port; 5, adjusting mechanism; 501, adjusting rod; 502, slot hole; 6, pulling mechanism; 601, steel wire rope; 602, limit block; 603, pin; 604, locking plate. DETAILED DESCRIPTION

[0030] The advantages and features of the present application will be more easily understood by those skilled in the art through the detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings, so that the scope of protection of the present application can be more clearly defined.

[0031] Please refer to Figures 1-5 A pressure constant mechanism for a large temperature difference and small flow heat exchange station, comprising a pressure tank mechanism 1 and a piston mechanism 2, the pressure tank mechanism 1 comprises a tank body 101, a water inlet 102 is formed at one side of the bottom end of the tank body 101, a water outlet 103 is formed at the other side of the bottom end of the tank body 101, a sealing sleeve 104 is fixed to the top of the tank body 101, the tank body 101 is made of stainless steel, has the characteristics of being firm, durable and corrosion-resistant, the water inlet 102 can be connected to the water inlet pipeline, the water outlet 103 can be connected to the water outlet pipeline, and the sealing sleeve 104 can prevent air leakage in the tank body 101.

[0032] As Figures 1-3 shown, the pressure tank mechanism 1 is internally provided with a piston mechanism 2 for separating gas and liquid, the piston mechanism 2 comprises a piston rod 201 movably connected to the inner side of the sealing sleeve 104, the bottom end of the piston rod 201 is fixed with a piston body 202, the outer side of the piston body 202 is provided with a sealing ring 203, the top end of the piston rod 201 is fixed with a connecting arm 204, the piston body 202 divides the inside of the tank body 101 into two chambers, the upper chamber contains gas, and the upper chamber has air tightness, the lower chamber contains water, when the water pressure increases, the water pressure will push the piston body 202 upward, so that the gas chamber is compressed, the volume of the water chamber increases, thereby storing excess water in the tank body 101, and when the water pressure decreases, the pressure of the gas is greater than the water pressure, which will squeeze the water stored in the tank body 101 into the water system, so that the water pressure increases, thereby adjusting and stabilizing the water pressure, in this process, the sealing sleeve 104 can limit the piston rod 201 radially, thereby improving the stability of the piston body 202, since the piston body 202 and the sealing ring 203 separate the water and the gas, air dissolution into the water can be avoided, thereby slowing down the oxidation of the pipeline, and the growth of algae and microorganisms on the water and the pipe wall can be reduced.

[0033] AsFigure 1 , Figure 2 and Figure 4 As shown, the pressure tank mechanism 1 has a pressure relief port 3 at the bottom front end for discharging water. A gate valve mechanism 4 is provided at the front end of the pressure relief port 3. The gate valve mechanism 4 includes a valve pipe 401 sealed to the front end of the pressure relief port 3. A valve body 402 is provided on the valve pipe 401. A drain port 403 is provided at the front end of the valve pipe 401. The gate valve mechanism 4 is provided with an adjustment mechanism 5 for adjusting the pressure relief. The adjustment mechanism 5 includes an adjustment rod 501 movably connected to the top of the valve body 402. Multiple slots 502 are equidistantly opened on the adjustment rod 501 along the vertical direction. A valve plate that can move vertically is provided inside the valve body 402. When the valve plate falls, the gate valve is closed. When the valve plate is raised, the gate valve is opened. The drain port 403 can be connected to a drain pipe to discharge excess liquid when the pressure is too high. The bottom end of the adjustment rod 501 is fixed to the valve plate in the valve body 402. When the adjustment rod 501 is raised, the valve plate will also be raised, thereby opening the gate valve mechanism 4.

[0034] like Figures 1-5 As shown, the piston mechanism 2 is equipped with a pulling mechanism 6 for traction adjustment mechanism 5 and gate valve mechanism 4. The pulling mechanism 6 includes a steel wire rope 601 with one end fixed to the connecting arm 204, and the other end of the steel wire rope 601 connected to a limit block 602. A pin 603 is fixed on the limit block 602, and a locking plate 604 is provided at the end of the pin 603. The locking plate 604 and the pin 603 are tightly fitted and rotated. The pin 603 is inserted into the slot 502 of the adjusting rod 501. When the water pressure is too high, the piston body 202 will push the connecting arm 204 to a certain height. The steel wire rope 601, fixed to the connecting arm 204, pulls the pin 603, thereby lifting the adjusting rod 501 and opening the gate valve mechanism 4. The opening threshold of the gate valve mechanism 4 can be adjusted by inserting the pin 603 into different slots 502. The rotational resistance between the locking plate 604 and the pin 603 is relatively large. When the pin 603 is pulled, the locking plate 604 can effectively prevent the pin 603 from dislodging from the slot 502. When the operator needs to remove the pin 603, the locking plate 604 can be manually rotated 90 degrees to remove the pin 603 from the slot 502.

[0035] The utility model discloses a device for adjusting and stabilizing the water pressure in the pipeline, which comprises a pressure tank mechanism 1, a piston mechanism 2, a pull mechanism 6, a regulating mechanism 5 and a gate valve mechanism 4.

[0036] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the utility model specification and the attached drawing contents, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A pressure constant mechanism for a heat exchange station with large temperature difference and small flow rate, comprising a pressure tank mechanism (1) and a piston mechanism (2), characterized in that: The pressure tank mechanism (1) is equipped with a piston mechanism (2) for separating gas and liquid. The pressure tank mechanism (1) is equipped with a pressure relief port (3) for discharging water at the bottom of the front end. The pressure relief port (3) is equipped with a gate valve mechanism (4) at the front end. The gate valve mechanism (4) is provided with an adjustment mechanism (5) for adjusting the pressure relief. The piston mechanism (2) is provided with a traction mechanism (6) for the traction adjustment mechanism (5) and the gate valve mechanism (4).

2. The pressure constant mechanism for a large temperature difference, small flow rate heat exchange station according to claim 1, characterized in that: The pressure tank mechanism (1) includes a tank body (101), with an inlet (102) at one bottom side of the tank body (101) and an outlet (103) at the other bottom side of the tank body (101). A sealing sleeve (104) is fixed to the top of the tank body (101).

3. The pressure constant mechanism for a large temperature difference, small flow rate heat exchange station according to claim 2, characterized in that: The piston mechanism (2) includes a piston rod (201) movably connected to the inside of the sealing sleeve (104), a piston body (202) fixed at the bottom end of the piston rod (201), a sealing ring (203) provided on the outside of the piston body (202), and a connecting arm (204) fixed at the top end of the piston rod (201).

4. The pressure constant mechanism for a large temperature difference, small flow rate heat exchange station according to claim 1, characterized in that: The gate valve mechanism (4) includes a valve tube (401) sealed to the front end of the pressure relief port (3), a valve body (402) is provided on the valve tube (401), and a drain port (403) is provided at the front end of the valve tube (401).

5. The pressure constant mechanism for a large temperature difference, small flow rate heat exchange station according to claim 4, characterized in that: The adjustment mechanism (5) includes an adjustment rod (501) movably connected to the top of the valve body (402), and the adjustment rod (501) is provided with a plurality of slots (502) at equal intervals along the vertical direction.

6. The pressure constant mechanism for a large temperature difference, small flow rate heat exchange station according to claim 3, characterized in that: The pulling mechanism (6) includes a wire rope (601) with one end fixed to the connecting arm (204), and the other end of the wire rope (601) is connected to a limit block (602), on which a pin (603) is fixed.

7. The pressure constant mechanism for a large temperature difference, small flow rate heat exchange station according to claim 6, characterized in that: The end of the pin (603) is provided with a locking piece (604), and the locking piece (604) and the pin (603) are in a tightly fitted rotatable connection.

Images