A device for changing a manual control to an automatic control of temperature

Abstract

The utility model discloses a device of manual control changes into automatic control temperature, including heat exchanger, the other side of heat exchanger is provided with steam inflow pipe and condensate discharge pipe respectively, and the middle part of steam inflow pipe is connected with filter and steam temperature control valve respectively along steam flow direction, is provided with electric hydraulic actuator on steam temperature control valve, and the middle part of hot water outlet pipe is provided with temperature sensor that measures hot water outlet pipe inside water temperature, and temperature sensor's signal output end electrically connected with RWD controller. Through setting steam temperature control valve, electric hydraulic actuator and RWD controller, can realize accurate control steam inflow pipe's steam inflow, through setting temperature sensor, can real -time monitoring the water temperature in hot water outlet pipe, compared with manual control valve, steam temperature control valve can automatic control, thereby make hot water outlet pipe can steady output hot water, and temperature maintains at preset value, effectively avoided energy waste.

Description

Technical Field

[0001] This utility model relates to the field of temperature control technology, specifically a device that converts manual control into automatic temperature control. Background Technology

[0002] In the production processes of chemical enterprises, steam heating is required to achieve process insulation or to circulate and heat process water. The entire system uses a pipeline steam and water mixing heat exchanger to circulate and heat the water, thereby achieving a constant temperature of the process water.

[0003] However, the amount of steam used is mostly controlled by manual valves, which makes it difficult to guarantee the control accuracy and process water is difficult to output at a constant temperature, resulting in energy waste. Therefore, we propose a device that changes the temperature control from manual to automatic. Utility Model Content

[0004] The purpose of this invention is to provide a device that converts manual control to automatic temperature control, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for automatically controlling temperature instead of manually controlling it, comprising a heat exchanger, wherein a cold water inlet pipe and a hot water outlet pipe are respectively provided on one side of the heat exchanger, and a steam inlet pipe and a condensate outlet pipe are respectively provided on the other side of the heat exchanger. A filter and a steam temperature control valve are respectively connected in the middle of the steam inlet pipe along the steam flow direction. An electric hydraulic actuator capable of automatically controlling the opening and closing of the steam temperature control valve is provided on the steam temperature control valve. A temperature sensor for measuring the internal water temperature of the hot water outlet pipe is provided in the middle of the hot water outlet pipe, and the signal output terminal of the temperature sensor is electrically connected to an RWD controller. The output terminal of the RWD controller is connected to the signal of the electric hydraulic actuator.

[0006] Preferably, a water pump is provided at the input end of the cold water inlet pipe.

[0007] Preferably, a first shut-off valve is provided at the end of the cold water inlet pipe near the heat exchanger.

[0008] Preferably, a second shut-off valve is provided at the end of the hot water outlet pipe near the heat exchanger.

[0009] Preferably, a drain valve is provided in the middle of the condensate drain pipe.

[0010] Preferably, a parallel pipe is fixedly connected between the input end and the output end of the steam inflow pipe, and a third shut-off valve is provided in the middle of the parallel pipe.

[0011] Preferably, a fourth shut-off valve is provided on the steam inlet pipe on the left side of the filter, and a fifth shut-off valve is provided on the steam inlet pipe on the right side of the steam temperature control valve.

[0012] Beneficial effects

[0013] This utility model provides a device that converts manual control to automatic temperature control, which has the following beneficial effects:

[0014] This device, which converts manual control to automatic temperature control, can precisely control the steam inflow into the steam inlet pipe by setting up a steam thermostatic valve, an electric hydraulic actuator, and an RWD controller. By setting up a temperature sensor, it can monitor the water temperature in the hot water outlet pipe in real time. Compared with manually controlled valves, the steam thermostatic valve can automatically control the water, so that the hot water outlet pipe can stably output hot water and maintain the temperature at the preset value, effectively avoiding energy waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a device for changing temperature control from manual to automatic, as proposed in this utility model.

[0016] In the diagram: 1. Heat exchanger; 2. Cold water inlet pipe; 3. Hot water outlet pipe; 4. Steam inlet pipe; 5. Condensate outlet pipe; 6. Filter; 7. Steam temperature control valve; 8. Electro-hydraulic actuator; 9. Temperature sensor; 10. RWD controller; 11. Water pump; 12. First shut-off valve; 13. Second shut-off valve; 14. Steam trap; 15. Parallel pipe; 16. Third shut-off valve; 17. Fourth shut-off valve; 18. Fifth shut-off valve. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1This utility model provides a technical solution: a device for automatically controlling temperature instead of manually controlling it, comprising a heat exchanger 1, with a cold water inlet pipe 2 and a hot water outlet pipe 3 respectively arranged on one side of the heat exchanger 1, and a steam inlet pipe 4 and a condensate outlet pipe 5 respectively arranged on the other side of the heat exchanger 1. A filter 6 and a steam temperature control valve 7 are connected to the middle of the steam inlet pipe 4 along the steam flow direction. An electro-hydraulic actuator 8 is provided on the steam temperature control valve 7 to automatically control the opening and closing of the steam temperature control valve 7. A temperature sensor 9 is provided in the middle of the hot water outlet pipe 3 to measure the internal water temperature. Specifically, 9 is an immersion temperature sensor, and the signal output terminal of the temperature sensor 9 is electrically connected to the RWD controller 10. The output terminal of the RWD controller 10 is connected to the signal of the electro-hydraulic actuator 8. By setting the steam temperature control valve 7, the electro-hydraulic actuator 8 and the RWD controller 10, the steam inflow of the steam inlet pipe 4 can be precisely controlled. By setting the temperature sensor 9, the water temperature in the hot water outlet pipe 3 can be monitored in real time. Compared with the manual control valve, the steam temperature control valve 7 can be automatically controlled, so that the hot water outlet pipe 3 can stably output hot water and maintain the temperature at the preset value, effectively avoiding energy waste.

[0019] Moreover, after a power outage, the entire device can be controlled by the RWD controller 10 to operate the electro-hydraulic actuator 8, thereby automatically closing the steam temperature control valve 7 to protect downstream equipment.

[0020] A water pump 11 is installed at the input end of the cold water inlet pipe 2. By installing the water pump 11, water can be injected into the heat exchanger 1 through the cold water inlet pipe 2.

[0021] A first shut-off valve 12 is installed at one end of the cold water inlet pipe 2 near the heat exchanger 1. By installing the first shut-off valve 12, the water inlet of the cold water inlet pipe 2 can be stopped at any time.

[0022] A second shut-off valve 13 is installed at one end of the hot water outlet pipe 3 near the heat exchanger 1. By installing the second shut-off valve 13, the water flow from the hot water outlet pipe 3 can be stopped at any time.

[0023] A steam trap 14 is installed in the middle of the condensate drain pipe 5. By installing the steam trap 14, the condensate in the steam system can be automatically discharged, ensuring that the condensate in the system will not accumulate, thereby maintaining the normal operation of the system. In addition, the steam trap 14 can prevent steam leakage while discharging the condensate, thereby improving the energy efficiency of the system and reducing energy waste.

[0024] A parallel pipe 15 is fixedly connected between the input and output ends of the steam inlet pipe 4, and a third shut-off valve 16 is provided in the middle of the parallel pipe 15. By setting the third shut-off valve 16, the steam supply of the parallel pipe 15 can be interrupted. By setting the parallel pipe 15, steam can be efficiently supplied in the initial stage of heating, thereby reducing the heating time of cold water.

[0025] A fourth shut-off valve 17 is installed on the steam inlet pipe 4 on the left side of the filter 6, and a fifth shut-off valve 18 is installed on the steam inlet pipe 4 on the right side of the steam temperature control valve 7. By setting the fourth shut-off valve 17, the steam inlet to the filter 6 can be stopped, and by setting the fifth shut-off valve 18, the steam inlet to the heat exchanger 1 can be stopped.

[0026] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0027] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for converting manual temperature control to automatic temperature control, comprising a heat exchanger (1), characterized in that: A cold water inlet pipe (2) and a hot water outlet pipe (3) are respectively provided on one side of the heat exchanger (1), and a steam inlet pipe (4) and a condensate outlet pipe (5) are respectively provided on the other side of the heat exchanger (1). A filter (6) and a steam temperature control valve (7) are respectively connected in the middle of the steam inlet pipe (4) along the steam flow direction. An electric hydraulic actuator (8) that can automatically control the opening and closing of the steam temperature control valve (7) is provided on the steam temperature control valve (7). A temperature sensor (9) that measures the internal water temperature of the hot water outlet pipe (3) is provided in the middle of the hot water outlet pipe (3), and the signal output terminal of the temperature sensor (9) is electrically connected to an RWD controller (10). The output terminal of the RWD controller (10) is connected to the signal of the electric hydraulic actuator (8).

2. The device for converting manual temperature control to automatic temperature control according to claim 1, characterized in that: A water pump (11) is installed at the input end of the cold water inlet pipe (2).

3. The device for converting manual temperature control to automatic temperature control according to claim 2, characterized in that: The cold water inlet pipe (2) is equipped with a first shut-off valve (12) at one end near the heat exchanger (1).

4. The device for converting manual temperature control to automatic temperature control according to claim 1, characterized in that: A second shut-off valve (13) is provided at one end of the hot water outlet pipe (3) near the heat exchanger (1).

5. The device for converting manual temperature control to automatic temperature control according to claim 1, characterized in that: A drain valve (14) is provided in the middle of the condensate drain pipe (5).

6. The device for converting manual temperature control to automatic temperature control according to claim 1, characterized in that: A parallel pipe (15) is fixedly connected between the input end and the output end of the steam inflow pipe (4), and a third shut-off valve (16) is provided in the middle of the parallel pipe (15).

7. The device for converting manual temperature control to automatic temperature control according to claim 1, characterized in that: A fourth shut-off valve (17) is provided on the steam inlet pipe (4) on the left side of the filter (6), and a fifth shut-off valve (18) is provided on the steam inlet pipe (4) on the right side of the steam temperature control valve (7).

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