CN219530186U - Exhaust apparatus suitable for under extremely cold weather - Google Patents

Abstract

The utility model relates to an exhaust device suitable for extremely cold weather, which comprises an exhaust valve, an antifreezing assembly, a top temperature probe and a cylinder body temperature probe, wherein the exhaust valve is arranged on the cylinder body; the anti-freezing assembly comprises a heat exchanger, a cylinder body heating pipeline, a top heating pipeline, a circulating pump and a circulating liquid tank; the heat exchanger is clung to the hot pressurized pipeline, and the cylinder body heating pipeline and the top heating pipeline are arranged on the exhaust valve; the top temperature probe is fixed at the exhaust port of the exhaust valve, the cylinder body temperature probe is fixed on the side wall of the exhaust valve, and the top temperature probe and the cylinder body temperature probe are connected with the temperature controller; the temperature controller is used for controlling the opening or closing of the circulating pump of the anti-freezing assembly. The exhaust device utilizes the pipeline as a heat source, is matched with a heating pipeline through the curved surface heat exchanger, realizes heat exchange under the driving of the circulating pump, plays a role in preventing freezing, and solves the problem that the existing exhaust valve often loses the exhaust function due to freezing in the northern cold use environment.

Description

Exhaust apparatus suitable for under extremely cold weather

Technical Field

The utility model relates to the field of exhaust devices, in particular to an exhaust device suitable for extremely cold weather.

Background

A large number of pipelines are arranged in the industries of energy, chemical industry, heat supply and the like for conveying working media. A large amount of air accumulation can occur at the initial stage of system operation and in the running process. Firstly, the harm of accumulated gas is that the reduction of the flow of a pipeline affects the circulation of working media, and the circulation is interrupted when serious; secondly, metal corrosion can be caused by pipeline gas accumulation, and leakage can be caused by pipeline corrosion after a long time; thirdly, the heat exchange of working media is affected; fourthly, vibration of the pipeline is caused when air is accumulated; so that the accumulated air in the pipeline must be timely discharged.

At present, in the industries of energy, chemical industry and heat supply, in order to solve the problem of pipeline air accumulation, a mechanical exhaust valve is commonly used for exhausting air in a pipeline, and comprises a floating ball type exhaust valve and a composite exhaust valve. However, the structural characteristics of the floating ball type exhaust valve and the compound exhaust valve determine the following disadvantages: (1) in the north cold use environment, the exhaust function is often lost due to freezing. (2) When a large amount of air is accumulated in the pressurized pipeline and needs to be discharged, a blowing blocking phenomenon occurs, so that normal air discharge cannot be realized. (3) The air accumulation state is not displayed, the state monitoring and the action condition statistics cannot be carried out, and only manual air exhaust is possible. In view of the actual application situations of the floating ball type exhaust valve and the composite type exhaust valve in a thermal power plant, the application situation on a high-flow pressurized pipeline is not ideal, and especially the floating ball type exhaust valve and the composite type exhaust valve cannot normally act in a northern cold working environment, so that the reliability of power generation and heat supply is affected, and the floating ball type exhaust valve and the composite type exhaust valve belong to the industry problem.

Disclosure of Invention

The utility model aims to provide an exhaust device suitable for extremely cold weather, an antifreezing assembly is arranged on the exhaust device, the antifreezing assembly utilizes a pipeline as a heat source, and the pipeline is matched with a heating pipeline through a curved heat exchanger, so that heat exchange is realized under the driving of a circulating pump, the antifreezing effect is achieved, and the problem that an existing exhaust valve often loses the exhaust function due to freezing in a cold use environment in the north is solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an exhaust device suitable for extremely cold weather comprises an exhaust valve, an antifreezing assembly, a top temperature probe and a cylinder body temperature probe; the anti-freezing assembly comprises a heat exchanger, a cylinder body heating pipeline, a top heating pipeline, a circulating pump and a circulating liquid tank; the heat exchanger is tightly attached to the hot pressurized pipeline, and the heat exchanger, the cylinder body heating pipeline, the top heating pipeline and the circulating liquid tank form a closed communication structure under the driving of the circulating pump; the cylinder body heating pipeline and the top heating pipeline are arranged on the exhaust valve and used for heating the exhaust valve; the top temperature probe is fixed at the exhaust port of the exhaust valve, the cylinder body temperature probe is fixed on the side wall of the exhaust valve, and the top temperature probe and the cylinder body temperature probe are connected with the temperature controller; the temperature controller is used for controlling the opening or closing of the circulating pump of the anti-freezing assembly according to the data monitored by the top temperature probe and the barrel temperature probe.

As the preference of the utility model, the heat exchanger is a curved heat exchanger, the radius Rq of the curved heat exchanger is consistent with the radius Rg of the pressurized pipeline, and the joint surface of the curved heat exchanger and the pressurized pipeline is coated with heat conduction grease; the installation position of the circulating pump is higher than the curved surface heat exchanger; the temperature controller is connected with the top temperature probe and the cylinder body temperature probe through cables, the Vin end of the temperature controller is connected with the positive electrode of the power supply through a switch K3, the negative electrode of the temperature controller is connected with the negative electrode of the power supply, the Vout end of the temperature controller is connected with the positive electrode of the circulating pump motor, and the negative electrode of the circulating pump motor is connected with the negative electrode of the power supply; vin end and Vout termination switch K6 of temperature controller.

As the preferable choice of the utility model, the exhaust device also comprises a four-way valve, a liquid limit switch, a miniature electric ball valve, a spring reset ball valve, an exhaust pipe, a controller and a power supply; wherein the four-way is communicated with a pressure pipeline; the exhaust valve is arranged on the upper surface of the four-way valve; the liquid limit switch is arranged on one side of the four-way joint, and the liquid limit switch fork body is inserted into the four-way joint; the miniature electric ball valve and the spring reset ball valve are both arranged on the other side of the four-way valve, are communicated with the four-way valve, and are normally closed ball valves; the exhaust pipe is connected with the miniature electric ball valve; the controller is used for controlling the miniature electric ball valve to be opened or closed according to the data monitored by the liquid limit switch.

Preferably, the antifreeze assembly further comprises a ball valve heating pipeline; wherein, the outlet of the heat exchanger is connected with the inlet of the ball valve heating pipeline; the ball valve heating pipeline is arranged around the spring reset ball valve and the miniature electric ball valve, and an outlet of the ball valve heating pipeline is connected with an inlet of the cylinder body heating pipeline; the cylinder body heating pipeline is wound around the cylinder body of the exhaust valve, and an outlet of the cylinder body heating pipeline is connected with an inlet of the top heating pipeline; the top heating pipeline is arranged at the top end of the exhaust valve, and an outlet of the top heating pipeline is connected with an inlet of the circulating liquid tank; the circulating liquid tank is internally provided with antifreeze, and is connected with an inlet of the circulating pump; and the outlet of the circulating pump is connected with the inlet of the heat exchanger.

Preferably, the exhaust device further comprises an air accumulation indicator lamp, an automatic exhaust indicator lamp and a sensor fault indicator lamp which are connected with the controller; the gas accumulation indicator lamp is used for sending a gas accumulation alarm signal, and when the liquid limit switch cannot monitor data, the gas accumulation indicator lamp is on; the automatic exhaust indicator lamp is used for prompting whether the automatic exhaust is performed or not, and the automatic exhaust indicator lamp is turned on after the miniature electric ball valve is started; the sensor fault indicator is used for prompting whether the liquid limit switch has a fault or not, and when the pin of the liquid limit switch has no data output, the sensor fault indicator is on.

As a further preferable mode of the utility model, the four-way joint is an equal-diameter four-way joint, the lower surface of the equal-diameter four-way joint is connected with a flange through a connecting piece, and the flange is fixedly arranged at an exhaust port of a highest point pipeline of the pressurized pipeline, so that the pressurized pipeline and the equal-diameter four-way joint form a communication structure; an anti-blocking wire is arranged above the equal-diameter four-way joint, and the equal-diameter four-way joint and the exhaust valve form a communication structure through the anti-blocking wire; one side of the equal-diameter four-way valve, which is close to the ball valve, is connected with the tee joint through a connecting piece, the upper part of the tee joint is connected with the spring reset ball valve through a connecting piece, and the other end of the tee joint is connected with the miniature electric ball valve through a connecting piece; the anti-blocking device is characterized in that a baffle is arranged in the anti-blocking butt wire, an orifice is formed in the baffle, the orifice and an exhaust port of the floating ball exhaust valve are arranged in a staggered mode, and the diameter of the orifice is smaller than the diameter of the exhaust port at the top of the exhaust valve.

As a further preferable aspect of the present utility model, the exhaust valve is a floating ball type exhaust valve or a composite exhaust valve; the connector comprises a butt wire; the bottom of blast pipe is equipped with the outlet, the fixed stay wire ring of tip of the handle of spring reset ball valve, the stay wire ring is connected with the rope, starts spring reset ball valve through pulling the rope.

As a further preferred mode of the utility model, the controller is an iridescent OHR-PR10 logic controller, and the L (+) terminal of the controller and the left end of the double lead terminal of the Q1 are connected with the positive electrode of the power supply through a switch K1; the N (-) terminal is connected with the negative electrode of the power supply; the I0 terminal is connected with the 2 pin of the liquid limit switch through a cable, and the I1 terminal is connected with the 4 pin of the liquid limit switch through a cable; the single lead terminal of Q0 is connected with the positive electrode of the power supply through a switch K2; one path of the double-lead terminal of Q0 is connected with the positive electrode of the miniature electric ball valve, and the other path is connected with the positive electrode of the automatic exhaust indicator lamp HL 1; the single lead terminal of the Q1 is connected with the positive electrode of the gas accumulation indicator lamp HL2, the right end of the double lead terminal of the Q1 is connected with one end of the Q2 terminal of the controller, and the other end of the Q2 terminal is connected with the positive electrode of the sensor fault indicator lamp HL 3; the I6 terminal and the I7 terminal are connected with the positive electrode of the power supply 19 through a switch K4 and a switch K5;

the 1 pin of the liquid limit switch is connected with the positive electrode of the power supply through a switch K1, and the 3 pin of the liquid limit switch is connected with the negative electrode of the power supply; the cathode of the miniature electric ball valve, the cathode of the automatic exhaust indicator lamp HL1, the cathode of the air accumulation indicator lamp HL2 and the cathode of the sensor fault indicator lamp HL3 are connected with the cathode of the power supply.

The utility model has the advantages and positive effects that:

(1) The anti-freezing assembly is arranged on the exhaust device, the anti-freezing assembly utilizes the pipeline as a heat source, and the heat exchange is realized under the drive of the circulating pump through the cooperation of the curved heat exchanger and the heating pipeline, so that the anti-freezing effect is realized, and the problem that the existing exhaust valve is often lost in the use environment in the north due to freezing is solved.

(2) The temperature probe and the temperature controller are arranged in the exhaust device, so that the intelligent control can be realized, the temperatures of the exhaust valve and the ball valve are always controlled between 5 and 20, and the temperature application range is wider after the anti-freezing assembly is additionally arranged in the device, and the device can be suitable for extremely cold weather by using the anti-freezing liquid.

(3) The exhaust device provided by the utility model skillfully utilizes the four-way, the floating ball exhaust valve is arranged on the four-way, the miniature electric ball valve is arranged on one side of the four-way, the floating ball exhaust valve and the pipeline form a communication structure, and the exhaust device can exhaust gas in the pipeline; the miniature electric ball valve also forms a communication structure with the pipeline, and because of the existence of the four-way joint, the miniature electric ball valve and the pipeline can form a height difference, so that the miniature electric ball valve can also be used for exhausting and sucking air.

(4) According to the exhaust device provided by the utility model, the liquid limit switch is arranged in the four-way valve, so that the amount of gas accumulation in the pipeline can be determined through the liquid limit switch, and when the gas accumulation amount is small, the exhaust can be realized through the floating ball exhaust valve; when the gas accumulation is too large, the miniature electric ball valve is opened for exhausting, the whole exhausting process can realize full-automatic exhausting through the logic controller, and the exhausting mode is simple and controllable.

(5) The automatic exhaust indicator lamp HL1, the air accumulation indicator lamp HL2 and the sensor fault indicator lamp are further arranged on the exhaust device, the air accumulation condition in the pipeline, the current working state of the exhaust device and the sensor state can be observed in real time through the indicator lamp, and an operator can conveniently control the exhaust condition.

(6) The exhaust device provided by the utility model is also provided with the spring reset ball valve, the spring reset ball valve is arranged on the tee joint, a communication structure is formed by the four-way joint and the pipeline, the installation position of the spring reset ball valve enables the spring reset ball valve to be used for exhaust, when the accumulated air in the pipeline cannot be exhausted for a long time through the miniature electric ball valve, the spring reset ball valve is manually controlled, and at the moment, the air is exhausted through the spring reset ball valve.

(7) The exhaust device provided by the utility model can realize the numerical control of pipeline exhaust through the logic controller, so that the exhaust is accurate and the record is accurate; in addition, the device can be provided with an RS485 interface, so that remote communication can be realized.

(8) The exhaust device provided by the utility model is connected with the floating ball exhaust valve through the anti-blocking butt wire, so that the phenomenon of blocking blowing during exhaust of the floating ball exhaust valve is avoided.

Drawings

FIG. 1 is a schematic front view of an exhaust apparatus according to the present utility model;

FIG. 2 is a schematic left view of an exhaust apparatus according to the present utility model;

FIG. 3 is a schematic top view of an exhaust apparatus according to the present utility model;

FIG. 4 is a cross-sectional view of the utility model at position A-A of FIG. 1;

FIG. 5 is a cross-sectional view of the utility model at position B-B in FIG. 2;

FIG. 6 is a schematic illustration of a circulation tank and circulation pump of the present utility model;

FIG. 7 is a front view of a curved heat exchanger of the present utility model;

FIG. 8 is a top view of a curved heat exchanger of the present utility model;

FIG. 9 is a circuit diagram of a controller and thermostat of the present utility model;

FIG. 10 is a schematic view of the mounting location of the exhaust apparatus of the present utility model;

FIG. 11 is a cross-sectional view of the utility model at position C-C of FIG. 10.

Reference numerals: the device comprises a flange 1, a constant diameter four-way valve 2, a liquid limit switch 3, a liquid limit switch fork 3-1, an anti-blowing blocking butt wire 4, a throttle orifice 4-1, a float ball exhaust valve 5, a temperature probe 6 cylinder body, a heating pipeline 7 cylinder body, an inlet of a heating pipeline 7-1 cylinder body, an outlet of a heating pipeline 7-2 cylinder body, an exhaust port 8, a top heating pipeline 9, an inlet of a top heating pipeline 9-1, an outlet of a top heating pipeline 9-2, a spring reset ball valve 10, a handle of a spring reset ball valve 10-1, a ball valve heating pipeline 11, an inlet of a ball valve 11-1, an outlet of a ball valve 11-2, a tee joint 13 miniature electric ball valve 14, an exhaust pipe 14-1 exhaust pipe outlet, a 15-1 circulating pump outlet, a 15-2 circulating pump inlet, a 16 circulating liquid tank inlet, a 16-1 circulating liquid tank inlet, a liquid inlet of a 16-2 circulating liquid tank, a 17 curved surface heat exchanger, an inlet of a 17-1 curved surface heat exchanger, an outlet of a 17-2 curved surface heat exchanger, a top temperature probe 18, a 19 power supply, a 20 siphon controller 21, a maximum point PR controller 10, and a maximum pressure controller.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

In the description of the present utility model, it should be noted that the terms "upper", "left", and the like indicate the azimuth or positional relationship as follows: the orientation or positional relationship shown in the drawings, or that conventionally put in use of the claimed product, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3 and fig. 6 to 11, the exhaust device suitable for extremely cold weather provided by the utility model comprises a floating ball exhaust valve 5, an antifreezing assembly, a top temperature probe 18, a barrel temperature probe 6 and a temperature controller 21; the anti-freezing assembly comprises a curved surface heat exchanger 17, a cylinder body heating pipeline 7, a top heating pipeline 9, a circulating pump 15 (a miniature direct-current brushless water pump is used in the embodiment) and a circulating liquid tank 16; the radius Rq of the curved surface heat exchanger 17 is consistent with the radius Rg of the pressurized pipeline, the joint surface of the curved surface heat exchanger 17 and the pressurized pipeline is coated with heat conduction grease, the curved surface heat exchanger is clung to the hot pressurized pipeline, and the curved surface heat exchanger 17 is communicated with the cylinder body heating pipeline 7 and the top heating pipeline 9; the cylinder body heating pipeline 7 is wound around the cylinder body of the floating ball exhaust valve 5, and the top heating pipeline 9 is arranged at the top end of the floating ball exhaust valve and used for heating the floating ball exhaust valve 5; the circulating liquid tank 16 is communicated with the cylinder body heating pipeline 7 and the top heating pipeline 9, antifreezing solution is added into the circulating liquid tank 16, and the antifreezing solution is added through a liquid adding port 16-2 of the circulating liquid tank; the circulating liquid tank 16 is connected with the circulating pump inlet 15-2; the outlet 15-1 of the circulating pump is connected with the inlet 17-1 of the curved surface heat exchanger, and the anti-freezing component circularly flows in a closed pipeline under the drive of the circulating pump 15 to realize heat exchange;

the top temperature probe 18 is fixed at the exhaust port of the floating ball exhaust valve 5, the barrel temperature probe 6 is fixed on the side wall of the floating ball exhaust valve 5, and the top temperature probe 18 and the barrel temperature probe 6 are connected with the temperature controller 21; the temperature controller 21 is used for controlling the circulating pump 15 of the antifreeze assembly to be started or stopped according to the data monitored by the top temperature probe 18 and the barrel temperature probe 6.

As shown in fig. 9, the temperature controller 21 in this embodiment is connected to the top temperature probe 6 and the barrel temperature probe 18 through cables, the Vin end of the temperature controller is connected to the positive electrode of the power supply 19 through the switch K3, the negative electrode of the temperature controller is connected to the negative electrode of the power supply, the Vout end of the temperature controller is connected to the positive electrode of the circulation pump motor, and the negative electrode of the circulation pump motor is connected to the negative electrode of the power supply; when the temperature of the top temperature probe 6 or the barrel temperature probe 18 is lower than 5 ℃ (variable), the temperature controller is closed, the circulating pump 15 is started to start heat exchange, when the temperature of the top temperature probe 6 or the barrel temperature probe 18 reaches 20 ℃ (variable), the temperature controller is disconnected, the circulating pump 15 is stopped, and the temperature of the floating ball exhaust valve is between 5 and 20 in a reciprocating manner, so that an antifreezing function is realized;

further, in this embodiment, the Vin end and Vout end of the temperature controller 21 are connected to the switch K6, which plays a role of bypass and direct connection when the temperature controller fails, and the switch K6 can be closed when the temperature controller fails or when the circulating pump 15 is required to continuously run, so as to keep the circulating pump 15 continuously running.

Further, in this embodiment, the floating ball exhaust valve 5 may be replaced by another mechanical exhaust valve such as a composite exhaust valve, and the exhaust valve in the exhaust device is not limited to the floating ball exhaust valve.

With continued reference to fig. 1-11, in another embodiment, the exhaust apparatus further includes an isodiametric four-way 2, a float exhaust valve 5, a liquid limit switch 3, a miniature electric ball valve 13, a spring return ball valve 10, an exhaust pipe 14, a controller 20, and a power supply 19;

the lower part of the equal-diameter four-way joint 2 is connected with a flange 1 through a butt wire, and the flange 1 is fixedly arranged at an exhaust port 22 of a highest-point pipeline of the pressurized pipeline, so that the pressurized pipeline and the equal-diameter four-way joint 2 form a communication structure; the top of the equal-diameter four-way valve 2 is connected with a floating ball exhaust valve 5 through an anti-blowing blocking butt wire 4; the left side of the equal-diameter four-way valve 2 is connected with a liquid limit switch 3 through a connecting piece; the right side of the equal-diameter four-way joint 2 is connected with a tee joint 12 through a connecting piece; the upper part of the tee joint 12 is connected with a spring reset ball valve (normally closed) 10 through a connecting piece, and the right end of the tee joint 12 is connected with a miniature electric ball valve 13 through a connecting piece (the embodiment adopts a power-off reset electric ball valve);

the liquid limit switch 3 and the miniature electric ball valve 13 are electrically connected with the controller 20, and the controller 20 is used for controlling the miniature electric ball valve 13 to be opened or closed according to the data monitored by the liquid limit switch 3;

the other end of the miniature electric ball valve 13 is connected with an exhaust pipe 14 through a connecting piece, and an exhaust pipe water outlet 14-1 is arranged at the bottom of the exhaust pipe 14;

the power supply 19 is used to power the exhaust.

Further, in this embodiment, the liquid limit switch 3 is a direct current liquid FTL33 PNP type liquid limit switch, and when the liquid limit switch 3 is installed, attention is paid to the position of the liquid limit switch fork 3-1 as shown in fig. 4, that is, the liquid limit switch fork 3-1 needs to be inserted into the equal-diameter four-way joint 2, and this installation method can reduce turbulence in the pipeline.

Further, in this embodiment, the spring-return ball valve 10 is a manual ball valve, and the spring-return ball valve 10 and the miniature electric ball valve 13 are both normally closed ball valves; the end part of the handle 10-1 of the spring reset ball valve is fixed with a stay wire ring, the stay wire ring is connected with a soft rope, and the spring reset ball valve 10 is started by pulling the soft rope, so that the manual operation of the ground position is realized.

Further, in this embodiment, the inside of the anti-blocking butt wire 4 is provided with a partition board, the partition board is provided with an orifice 4-1, the orifice 4-1 and the exhaust port 8 of the floating ball exhaust valve 5 are arranged in a staggered manner, and the diameter of the orifice is smaller than that of the exhaust port at the top of the floating ball exhaust valve (as shown in fig. 5), so that the installation structure can avoid the occurrence of the blocking blowing phenomenon during the exhaust.

Further, in this embodiment, the antifreeze assembly further includes a ball valve heating pipeline 11; wherein, the outlet 17-2 of the curved surface heat exchanger is connected with the inlet 11-1 of the ball valve heating pipeline; the ball valve heating pipeline 11 is arranged around the spring reset ball valve 10 and the miniature electric ball valve 13, the outlet 11-2 of the ball valve heating pipeline is connected with the inlet 7-1 of the barrel heating pipeline, the outlet 7-2 of the barrel heating pipeline is connected with the inlet 9-1 of the top heating pipeline, and the outlet 9-2 of the top heating pipeline is connected with the inlet of the circulating liquid tank 16.

As shown in fig. 8, in this embodiment, the controller 20 is an iridescent OHR-PR10 logic controller; the left ends of the L (+) terminal and the double lead terminal of the Q1 of the controller are connected with the positive electrode of the power supply 19 through a switch K1; the N (-) terminal is connected with the negative electrode of the power supply 19; the I0 terminal is connected with the 2 pin of the liquid limit switch 3 through a cable, and the I1 terminal is connected with the 4 pin of the liquid limit switch 3 through a cable; the single lead terminal of Q0 is connected with the positive electrode of the power supply 19 through a switch K2; one path of the double-lead terminal of Q0 is connected with the positive electrode of the miniature electric ball valve 13, and the other path is connected with the positive electrode of the automatic exhaust indicator lamp HL 1; the single lead terminal of the Q1 is connected with the positive electrode of the gas accumulation indicator lamp HL2, the right end of the double lead terminal of the Q1 is connected with one end of the Q2 terminal of the controller, and the other end of the Q2 terminal is connected with the positive electrode of the sensor fault indicator lamp HL 3; the I6 terminal and the I7 terminal are connected with the positive electrode of the power supply 19 through a switch K4 and a switch K5;

the 1 foot of the liquid limit switch 3 is connected with the positive electrode of the power supply 19 through a switch K1, and the 3 foot of the liquid limit switch 3 is connected with the negative electrode of the power supply 19; the negative electrode of the miniature electric ball valve 13, the negative electrode of the automatic exhaust indicator lamp HL1, the negative electrode of the air accumulation indicator lamp HL2 and the negative electrode of the sensor fault indicator lamp HL3 are connected with the negative electrode of the power supply.

The control method of the exhaust device suitable for extremely cold weather is as follows:

(1) Starting the power-on, starting the operation of the exhaust device, and when a certain amount of accumulated air in the pipeline is reached, descending the floating ball in the floating ball exhaust valve, and starting automatic exhaust; when the gas accumulation is too large, the liquid level in the four-way valve is reduced to be below the liquid limit switch fork body 3-1, and the liquid limit switch 3 sends out a high level;

(2) The liquid limit switch 3 sends out a high-level signal to the IO end of the siphon OHR-PR10 logic controller through a cable, IO is closed, a T00 timer in the logic controller starts timing, a Q1 closing instruction is output, the gas accumulation indicator lamp HL2 is on, and a gas accumulation alarm signal is sent out; when the accumulated time length of the T00 timer exceeds 10min (can be set arbitrarily), a Q0 closing instruction is sent out, the miniature electric ball valve is opened, an automatic exhaust indicator lamp HL1 is on, and exhaust is started through an exhaust pipe 14;

(3) When air in the pipeline is exhausted, the liquid limit switch fork body 3-1 is covered by liquid, a low-level signal sent by the liquid limit switch 3 is transmitted to the IO end of the siphon OHR-PR10 logic controller through a cable, IO is disconnected, the logic controller sends out Q0 disconnection and Q1 disconnection instructions, the air accumulation indicator lamp HL2 is turned off, the miniature electric ball valve is automatically turned off, the automatic exhaust indicator lamp HL1 is turned off, and the cycle is repeated.

In this embodiment, when the automatic exhaust indicator lamp HL1 and the air accumulation indicator lamp HL2 are in a bright state for a long time, the spring reset ball valve can be manually controlled, so that the air in the pipeline is exhausted through the spring reset ball valve.

In addition, the exhaust device provided by the embodiment can also realize a self-air suction function, when water inlet in the pipeline is stopped, the liquid level in the pipeline is reduced, the pipeline generates negative pressure, and at the moment, the floating ball exhaust valve is rapidly opened to perform air suction; because the liquid level in the pipeline is lowered, a high-level signal is sent by the liquid limit switch and is transmitted to the IO end of the siphon OHR-PR10 logic controller through a cable, a T00 timer in the logic controller starts to count, and when the accumulated time length of the T00 timer exceeds a set value, the miniature electric ball valve is automatically opened, so that the pipeline can realize double-channel air suction, and the pipeline is prevented from being broken; when the exhaust device is used for realizing the automatic air suction function, the accumulated time length of the T00 timer can be set to be short, and generally not more than 1min.

When the liquid limit switch 3 works normally, the output states of the pins 2 and 4 of the liquid limit switch 3 are opposite, the logic controller sends out a Q2 disconnection instruction, and the sensor fault indicator lamp HL3 is turned off; when the liquid limit switch 3 fails, the pins 2 and 4 of the liquid limit switch 3 do not output, the logic controller sends out a Q2 closing instruction, and the sensor fault indicator lamp HL3 is on.

The controller described in this embodiment includes a counter C00 and a counter C01, and the number of times of automatic exhaust and the duration of each exhaust can be recorded by the counter C00 and the counter C01; when the counter C00 needs to be reset, a K4 switch can be closed, the I6 terminal of the logic controller outputs high level, and the counter C00 is reset to display 0000000; when the counter C01 is reset, the K5 switch may be closed, the I7 terminal of the logic controller outputs a high level, and the counter C01 is reset to display 0000000.

Finally, it should be noted that the above embodiments are merely for illustrating the technical solutions of the embodiments of the present utility model, and are not limiting; although embodiments of the present utility model have been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions.

Claims (8)

1. The exhaust device suitable for extremely cold weather is characterized by comprising an exhaust valve, an antifreezing assembly, a top temperature probe and a cylinder body temperature probe; the anti-freezing assembly comprises a heat exchanger, a cylinder body heating pipeline, a top heating pipeline, a circulating pump and a circulating liquid tank; the heat exchanger is tightly attached to the hot pressurized pipeline, and the heat exchanger, the cylinder body heating pipeline, the top heating pipeline and the circulating liquid tank form a closed communication structure under the driving of the circulating pump; the cylinder body heating pipeline and the top heating pipeline are arranged on the exhaust valve and used for heating the exhaust valve; the top temperature probe is fixed at the exhaust port of the exhaust valve, the cylinder body temperature probe is fixed on the side wall of the exhaust valve, and the top temperature probe and the cylinder body temperature probe are connected with the temperature controller; the temperature controller is used for controlling the opening or closing of the circulating pump of the anti-freezing assembly according to the data monitored by the top temperature probe and the barrel temperature probe.

2. The exhaust device suitable for extremely cold weather according to claim 1, wherein the heat exchanger is a curved heat exchanger, the radius Rq of the curved heat exchanger is consistent with the radius Rg of the pressurized pipeline, and the joint surface of the curved heat exchanger and the pressurized pipeline is coated with heat conduction grease; the installation position of the circulating pump is higher than the curved surface heat exchanger; the temperature controller is connected with the top temperature probe and the cylinder body temperature probe through cables, the Vin end of the temperature controller is connected with the positive electrode of the power supply through a switch K3, the negative electrode of the temperature controller is connected with the negative electrode of the power supply, the Vout end of the temperature controller is connected with the positive electrode of the circulating pump motor, and the negative electrode of the circulating pump motor is connected with the negative electrode of the power supply; vin end and Vout termination switch K6 of temperature controller.

3. The exhaust device suitable for use in severe cold weather according to claim 1, further comprising a four-way, a liquid limit switch, a miniature electric ball valve, a spring return ball valve, an exhaust pipe, a controller; wherein the four-way is communicated with a pressure pipeline; the exhaust valve is arranged on the upper surface of the four-way valve; the liquid limit switch is arranged on one side of the four-way joint, and the liquid limit switch fork body is inserted into the four-way joint; the miniature electric ball valve and the spring reset ball valve are both arranged on the other side of the four-way valve, are communicated with the four-way valve, and are normally closed ball valves; the exhaust pipe is connected with the miniature electric ball valve; the controller is used for controlling the miniature electric ball valve to be opened or closed according to the data monitored by the liquid limit switch.

4. An exhaust apparatus adapted for use in severe cold weather conditions as claimed in claim 3, wherein the antifreeze assembly further comprises a ball valve heating line; wherein, the outlet of the heat exchanger is connected with the inlet of the ball valve heating pipeline; the ball valve heating pipeline is arranged around the spring reset ball valve and the miniature electric ball valve, and an outlet of the ball valve heating pipeline is connected with an inlet of the cylinder body heating pipeline; the cylinder body heating pipeline is wound around the cylinder body of the exhaust valve, and an outlet of the cylinder body heating pipeline is connected with an inlet of the top heating pipeline; the top heating pipeline is arranged at the top end of the exhaust valve, and an outlet of the top heating pipeline is connected with an inlet of the circulating liquid tank; the circulating liquid tank is internally provided with antifreeze, and is connected with an inlet of the circulating pump; and the outlet of the circulating pump is connected with the inlet of the heat exchanger.

5. An exhaust apparatus suitable for use in severe cold weather according to claim 3, further comprising an air accumulation indicator, an automatic exhaust indicator, a sensor fault indicator connected to the controller; the gas accumulation indicator lamp is used for sending a gas accumulation alarm signal, and when the liquid limit switch cannot monitor data, the gas accumulation indicator lamp is on; the automatic exhaust indicator lamp is used for prompting whether the automatic exhaust is performed or not, and the automatic exhaust indicator lamp is turned on after the miniature electric ball valve is started; the sensor fault indicator is used for prompting whether the liquid limit switch has a fault or not, and when the pin of the liquid limit switch has no data output, the sensor fault indicator is on.

6. The exhaust device suitable for extremely cold weather according to claim 3, wherein the four-way joint is an equal-diameter four-way joint, the lower surface of the equal-diameter four-way joint is connected with a flange through a connecting piece, and the flange is fixedly arranged at an exhaust port of a highest-point pipeline of the pressurized pipeline, so that the pressurized pipeline and the equal-diameter four-way joint form a communication structure; an anti-blocking wire is arranged above the equal-diameter four-way joint, and the equal-diameter four-way joint and the exhaust valve form a communication structure through the anti-blocking wire; one side of the equal-diameter four-way valve, which is close to the ball valve, is connected with the tee joint through a connecting piece, the upper part of the tee joint is connected with the spring reset ball valve through a connecting piece, and the other end of the tee joint is connected with the miniature electric ball valve through a connecting piece; the anti-blocking device is characterized in that a baffle is arranged in the anti-blocking butt wire, an orifice is formed in the baffle, the orifice and an exhaust port of the floating ball exhaust valve are arranged in a staggered mode, and the diameter of the orifice is smaller than the diameter of the exhaust port at the top of the exhaust valve.

7. The exhaust device suitable for use in severe cold weather according to claim 6, wherein the exhaust valve is a floating ball type exhaust valve or a composite exhaust valve; the connector comprises a butt wire; the bottom of blast pipe is equipped with the outlet, the fixed stay wire ring of tip of the handle of spring reset ball valve, the stay wire ring is connected with the rope, starts spring reset ball valve through pulling the rope.

8. The exhaust device suitable for extremely cold weather according to claim 5, wherein the controller is an iridescent OHR-PR10 logic controller, and the left ends of the L (+) terminal and the Q1 double lead terminal of the controller are connected with the positive electrode of the power supply through a switch K1; the N (-) terminal is connected with the negative electrode of the power supply; the I0 terminal is connected with the 2 pin of the liquid limit switch through a cable, and the I1 terminal is connected with the 4 pin of the liquid limit switch through a cable; the single lead terminal of Q0 is connected with the positive electrode of the power supply through a switch K2; one path of the double-lead terminal of Q0 is connected with the positive electrode of the miniature electric ball valve, and the other path is connected with the positive electrode of the automatic exhaust indicator lamp HL 1; the single lead terminal of the Q1 is connected with the positive electrode of the gas accumulation indicator lamp HL2, the right end of the double lead terminal of the Q1 is connected with one end of the Q2 terminal of the controller, and the other end of the Q2 terminal is connected with the positive electrode of the sensor fault indicator lamp HL 3; the I6 terminal and the I7 terminal are connected with the positive electrode of the power supply 19 through a switch K4 and a switch K5;

the 1 pin of the liquid limit switch is connected with the positive electrode of the power supply through a switch K1, and the 3 pin of the liquid limit switch is connected with the negative electrode of the power supply; the cathode of the miniature electric ball valve, the cathode of the automatic exhaust indicator lamp HL1, the cathode of the air accumulation indicator lamp HL2 and the cathode of the sensor fault indicator lamp HL3 are connected with the cathode of the power supply.