Forced circulation pump of high-temperature and high-pressure boiler

Abstract

The utility model discloses a high-temperature and high-pressure boiler forced circulation pump which comprises a base and further comprises a pumping mechanism, the top of the base is provided with the pumping mechanism, and the pumping mechanism comprises a motor, a pump body, a water inlet pipe, a drainage pipe, a transverse sleeve, a vertical sleeve, a vacuum cavity and an exhaust pipe. A motor is installed at one end of the top of the base, a pump body is installed at the power output end of the motor, a water inlet pipe is arranged at the liquid inlet end of the pump body, and a water drainage pipe is arranged at the liquid drainage end of the pump body. The inner vacuum cavity is close to the vacuum environment, in the process that the pump body pumps high-temperature water, the vacuum cavity structure isolates the external environment of the pump body, temperature transfer media are reduced, then a certain heat preservation effect is achieved, when the water body flows through the pump body, heat loss is reduced, and then heat energy waste is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to forced circulation pump technical field, especially in high temperature high pressure boiler forced circulation pump. BACKGROUND

[0002] The forced circulation pump is a kind of equipment that fluid is extracted from low pressure area and is forced to transport to high pressure area by mechanical force, it utilizes the continuous circulation flow of liquid in closed container, increases the pressure of liquid by the static pressure of fluid, when the pressure reaches certain value, liquid flow is continuously increased by control device adjustment, and vaporization phenomenon occurs simultaneously with the decrease of liquid density, vacuum degree is generated, thereby forming continuous suction and discharge process.

[0003] The existing forced circulation pump has the following disadvantages when in use: the forced circulation pump is widely used on high temperature high pressure boiler, and when being used in high temperature high pressure boiler, high temperature medium is circulated by pump body, the pump body is generally made of metal material, and the heat conduction is good, heat loss is caused when the high temperature medium passes through the position of pump body during circulation, unnecessary heat energy is wasted, therefore, the high temperature high pressure boiler forced circulation pump is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high temperature high pressure boiler forced circulation pump, which is characterized by the pump sending mechanism arranged on the top of the base, which can reduce the heat loss of high temperature medium during the circulation of the pump body, and effectively solve the problems in the background art.

[0005] To achieve the above object, the utility model takes the technical scheme that

[0006] A high temperature high pressure boiler forced circulation pump, comprising a base, further comprising a pump sending mechanism, the base top is provided with the pump sending mechanism, the pump sending mechanism includes motor, pump body, water inlet pipe, drain pipe, horizontal sleeve pipe, vertical sleeve pipe, vacuum cavity and air suction pipe, one end of the base top is provided with motor, and the power output end of motor is provided with pump body, the liquid inlet end of pump body is provided with water inlet pipe, and the liquid outlet end of pump body is provided with drain pipe, the outer periphery of water inlet pipe and drain pipe is respectively welded with horizontal sleeve pipe and vertical sleeve pipe, the internal of horizontal sleeve pipe and vertical sleeve pipe is respectively provided with vacuum cavity, and the surface of horizontal sleeve pipe is provided with air suction pipe, which is connected with the internal of vacuum cavity.

[0007] Further, the internal of horizontal sleeve pipe is provided with through hole close to the internal of vertical sleeve pipe, and the through hole structure makes the internal of horizontal sleeve pipe and vertical sleeve pipe be communicated with the vacuum cavity.

[0008] Further, the inner wall of the horizontal sleeve and the vertical sleeve is welded with connecting ribs, and the end of the connecting rib is welded with a supporting ring, which is attached to the outer wall of the water inlet pipe and the drain pipe; the connecting rib and the supporting ring structure can support and strengthen the shell structure of the water inlet pipe and the drain pipe, and connect the horizontal sleeve and the vertical sleeve.

[0009] Further, the inside of the air extraction pipe is installed with a vacuum valve; the opening and closing of the air extraction pipe can be controlled through the vacuum valve.

[0010] Further, the inner wall of the water inlet pipe away from the pump body is welded with a corrugated bushing; the corrugated bushing structure is fixed at the water inlet end of the water inlet pipe, which can play a certain buffering role and reduce the influence of water hammer effect on the internal components of the pump body.

[0011] Compared with the prior art, the utility model has the advantages that the motor and the pump body are installed on the top of the base, the motor drives the operation of the pumping components in the pump body when the motor operates, the forced circulation of the boiler water body is realized, the horizontal sleeve and the vertical sleeve are welded on the outer periphery of the water inlet pipe and the drain pipe respectively, the connecting rib and the supporting ring structure play the auxiliary connection and supporting role, the structural strength of the water inlet pipe and the drain pipe is improved, and when the horizontal sleeve and the vertical sleeve are welded in place, the vacuum equipment is connected through the air extraction pipe to extract vacuum in the inside of the horizontal sleeve and the vertical sleeve, so that the internal vacuum cavity approaches the vacuum environment, the vacuum cavity structure isolates the external environment of the pump body during the pumping process of the high-temperature water body, the temperature transfer medium is reduced, and a certain heat preservation effect is achieved, the heat loss is reduced when the water body flows through the pump body, and the waste of heat energy is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a whole structure schematic view of the utility model of a high-temperature and high-pressure boiler forced circulation pump.

[0013] Fig. 2 It is an internal structure schematic view of the water inlet pipe and the drain pipe of the utility model of a high-temperature and high-pressure boiler forced circulation pump.

[0014] Fig. 3 It is a sectional structure schematic view of the water inlet pipe end of the utility model of a high-temperature and high-pressure boiler forced circulation pump.

[0015] In the drawing: 1, base; 2, pumping mechanism; 201, motor; 202, pump body; 203, water inlet pipe; 204, drain pipe; 205, horizontal sleeve; 206, vertical sleeve; 207, through hole; 208, connecting rib; 209, supporting ring; 210, vacuum cavity; 211, air extraction pipe; 212, vacuum valve; 3, corrugated bushing. DETAILED DESCRIPTION

[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] like Figs. 1-3 As shown, a high-temperature and high-pressure boiler forced circulation pump includes a base 1 and a pumping mechanism 2. The pumping mechanism 2 is installed on the top of the base 1. The pumping mechanism 2 includes a motor 201, a pump body 202, a water inlet pipe 203, a drain pipe 204, a horizontal sleeve 205, a vertical sleeve 206, a vacuum chamber 210, and an extraction pipe 211. The motor 201 is installed at one end of the top of the base 1, and the pump body 202 is installed at the power output end of the motor 201. The water inlet pipe 203 is provided at the liquid inlet end of the pump body 202, and the drain pipe 204 is provided at the liquid outlet end of the pump body 202. The horizontal sleeve 205 and the vertical sleeve 206 are welded to the outer periphery of the water inlet pipe 203 and the drain pipe 204, respectively. The vacuum chamber 210 is opened inside the horizontal sleeve 205 and the vertical sleeve 206. An extraction pipe 211 connected to the inside of the vacuum chamber 210 is installed on one side of the surface of the horizontal sleeve 205.

[0018] The horizontal sleeve 205 has a through hole 207 on the side near the inside of the vertical sleeve 206. The inner walls of both the horizontal sleeve 205 and the vertical sleeve 206 are welded with connecting ribs 208, and the ends of the connecting ribs 208 are welded with support rings 209. The support rings 209 are attached to the outer walls of the water inlet pipe 203 and the drain pipe 204. The through hole 207 structure allows communication between the vacuum chamber 210 inside the horizontal sleeve 205 and the vertical sleeve 206. The connecting ribs 208 and the support rings 209 structure can provide support and reinforcement for the shell structure of the water inlet pipe 203 and the drain pipe 204, while connecting the horizontal sleeve 205 and the vertical sleeve 206.

[0019] The vacuum pipe 211 is equipped with a vacuum valve 212, and the inner wall of the water inlet pipe 203 is welded with a corrugated bushing 3 at the end away from the pump body 202. The vacuum valve 212 can control the opening and closing of the vacuum pipe 211. The corrugated bushing 3 is fixed to the water inlet end of the water inlet pipe 203, which can play a certain buffering role and reduce the impact of water hammer effect on the internal components of the pump body 202.

[0020] It needs to be explained that the utility model discloses a high-temperature high-pressure boiler forced circulation pump, when using, motor 201 and pump body 202 are installed at the top of base 1, and the operation of the internal pumping assembly of pump body 202 is driven when motor 201 operates, realizes the forced circulation of the water body of the boiler, and the outer periphery of water inlet pipe 203 and drain pipe 204 is respectively welded with horizontal sleeve pipe 205 and vertical sleeve pipe 206, and the structure of connecting rib 208 and supporting ring 209 plays the auxiliary connection and supporting effect, improves the structural strength of water inlet pipe 203 and drain pipe 204, simultaneously, when horizontal sleeve pipe 205 and vertical sleeve pipe 206 are welded in place, vacuumizing equipment is connected through air extraction pipe 211 to carry out vacuumizing treatment to the inside of horizontal sleeve pipe 205 and vertical sleeve pipe 206, makes the inside vacuum cavity 210 close to vacuum environment, and the vacuum cavity 210 structure is isolated from the external environment of pump body 202 in the pumping process of pump body 202 to high-temperature water body, reduces temperature transfer medium, and then plays certain heat preservation effect, when the water body flows through pump body 202, reduces the loss of heat, and then reduces the waste of heat energy.

[0021] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled person in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature high-pressure boiler forced circulation pump comprising a base (1), characterized in that, Also include pumping mechanism (2), the base (1) top is provided with pumping mechanism (2), pumping mechanism (2) includes motor (201), pump body (202), water inlet pipe (203), drain pipe (204), horizontal sleeve tube (205), vertical sleeve tube (206), vacuum cavity (210) and suction pipe (211), the base (1) top one end is mounted with motor (201) and the power output end of motor (201) is installed with pump body (202), the inlet end of pump body (202) is provided with water inlet pipe (203) and the outlet end of pump body (202) is provided with drain pipe (204), the outer periphery of water inlet pipe (203) and drain pipe (204) is respectively welded with horizontal sleeve tube (205) and vertical sleeve tube (206), the inside of horizontal sleeve tube (205) and vertical sleeve tube (206) is all provided with vacuum cavity (210), the surface of horizontal sleeve tube (205) one side is installed with suction pipe (211) and vacuum cavity (210) inside is connected.

2. A high-temperature high-pressure boiler forced circulation pump according to claim 1, characterized in that: The inside of horizontal sleeve tube (205) is close to the inside of vertical sleeve tube (206) one side and is provided with through hole (207).

3. A high temperature high pressure boiler forced circulation pump as claimed in claim 1 wherein: The inner wall of horizontal sleeve tube (205) and vertical sleeve tube (206) is all welded with connecting rib (208) and the end of connecting rib (208) is all welded with supporting ring (209), the supporting ring (209) is attached to the outer wall of water inlet pipe (203) and drain pipe (204).

4. A high temperature high pressure boiler forced circulation pump as claimed in claim 1 wherein: The inside of suction pipe (211) is installed with vacuum valve (212).

5. A high temperature high pressure boiler forced circulation pump as claimed in claim 1 wherein: The end of water inlet pipe (203) inner wall is away from pump body (202) and is welded with corrugated bushing (3).

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