Variable flow regulation and control device for circulating pump of heat exchange station of thermal power plant

Abstract

The utility model discloses a thermal power plant heat exchange station circulating pump variable flow regulation and control device, which relates to the technical field of circulating pump variable flow regulation and control, and comprises a circulating pump, a water return pipe and a frequency converter, the circulating pump is fixedly sleeved on the outer side of the water return pipe, a water return temperature sensor is fixedly sleeved on the pipe wall of the water return pipe, and a casing is fixedly sleeved on the outer side of the frequency converter. A control circuit board is fixedly arranged in the machine shell, a touch panel is arranged at an opening of the machine shell, a pressing block is fixedly arranged on the surface of the touch panel, a groove is formed in the top of the machine shell, a pressing receiver is fixedly embedded in the groove, and the pressing receiver is electrically connected with the control circuit board. According to the utility model, flip protection can be carried out on the touch panel, a control signal can be conveniently transmitted into the frequency converter, and the flow of the circulating pump can be accurately regulated and controlled through the frequency converter.

Description

TECHNICAL FIELD

[0001] The utility model relates to circulating pump variable flow regulation and control technical field, concretely relates to heat exchange station circulating pump variable flow regulation and control device of thermal power plant. BACKGROUND

[0002] The heat demand of users at different time periods or under different climate conditions can be different. During the heating period, the flow required by the user can frequently change, and in order to meet the requirement of this flow change, the heat exchange station needs to regulate and control the circulating pump to provide stable heat that meets the user's demand.

[0003] CN207196625U is a heat supply heat load double frequency regulation and control device, which adopts dynamic heat load to regulate user heat load, can react to random factors, and is more accurate in heat load regulation. Only the maximum and minimum frequencies are used to operate the circulating pump, and there is no water force imbalance.

[0004] However, the above-mentioned regulation and control device transmits the control signal to the frequency converter through the external touch panel when regulating and controlling, and regulates and controls the circulating pump through the frequency converter. The touch panel is exposed to the outside, which can easily cause the touch panel to be worn and reduce the touch control accuracy, thereby reducing the overall regulation and control effect of the regulation and control device. UTILITY MODEL CONTENTS

[0005] In view of the above-mentioned problems of the existing heat exchange station circulating pump variable flow regulation and control device of thermal power plant, the utility model is proposed.

[0006] Therefore, the utility model aims to provide a heat exchange station circulating pump variable flow regulation and control device of thermal power plant, which solves the problem that the touch panel for inputting the regulation and control signal is exposed to the outside, which can easily cause the touch panel to be worn and reduce the touch control accuracy, thereby reducing the overall regulation and control effect of the regulation and control device.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] The heat exchange station circulating pump variable flow regulation and control device of thermal power plant comprises a circulating pump, a return pipe and a frequency converter, the circulating pump is fixedly sleeved on the outer side of the return pipe, and the pipe wall of the return pipe is fixedly sleeved with a return water temperature sensor.

[0009] The outer side of the frequency converter is fixedly sleeved with a machine shell, the inside of the machine shell is fixedly provided with a control circuit board, the opening of the machine shell is provided with a touch panel, the surface of the touch panel is fixedly provided with a pressing block, the top of the machine shell is provided with a groove, and the pressing receiver is fixedly embedded in the groove. The pressing receiver is electrically connected with the control circuit board.

[0010] Preferably, a control cable is arranged between the circulating pump and the frequency converter, and the control circuit board is electrically connected to the frequency converter.

[0011] Preferably, a rotating groove is arranged on the top of the shell and is matched with the rotation of the touch plate, and a flip control mechanism is arranged in the rotating groove and is used for supporting the flip of the touch plate.

[0012] Preferably, the flip control mechanism comprises a supporting rod, the supporting rod is fixedly arranged in the rotating groove, and a connecting pipe is arranged on the rod wall of the supporting rod and is fixedly connected with the touch plate.

[0013] Further, the connecting pipe is a T-shaped connecting pipe, and a fixing groove matched with the fixing of the connecting pipe is arranged on the side of the touch plate.

[0014] Preferably, a cavity is arranged in the side of the touch plate away from the shell, positioning rods are slidably arranged on both sides of the cavity, springs are arranged on the rod walls of the positioning rods and are fixedly connected with the cavity and the positioning rods, and positioning grooves matched with the insertion of the positioning rods are arranged on the inner walls of the shell.

[0015] Preferably, a rotating rod is rotatably arranged on the back side of the touch plate, the end of the rotating rod extends into the cavity, two symmetrical pull ropes are fixedly arranged on the rod wall of the rotating rod, and the ends of the pull ropes are fixedly connected with the positioning rods.

[0016] Preferably, the end of the rotating rod extends out of the cavity and is fixedly arranged with a rotating block.

[0017] Preferably, the two pull ropes are arranged in a staggered and intersected mode.

[0018] In the above technical solution, the technical effects and advantages of the utility model are as follows:

[0019] 1. The shell, the frequency converter, the circulating pump, the control cable, the touch plate, the control circuit, the pressing block and the pressing receiver can be used to protect the touch plate, and can be used to transmit the control signal to the frequency converter and accurately control the flow of the circulating pump.

[0020] 2. The shell, the flip control mechanism, the touch plate, the cavity, the positioning rods and the positioning grooves can be used to arrange the touch plate below the top of the shell before and after the control work, so that the touch plate can be protected, the control signal can be stably transmitted, and the flow of the circulating pump can be effectively and quickly controlled. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2The utility model discloses a top view structure schematic diagram of the casing and touch panel of the utility model discloses a

[0023] Figure 3 The utility model discloses a Figure 2 The utility model discloses a A part enlarged schematic diagram of

[0024] Figure 4 The utility model discloses a bottom view of the touch panel of the utility model discloses a

[0025] Figure 5 The utility model discloses an internal section view of the touch panel of the utility model discloses a

[0026] The utility model discloses a circulating pump, a return pipe, a frequency converter, a return temperature sensor, a casing, a control circuit board, a touch panel, a pressing block, a recess, a pressing receiver, a control cable, a rotating groove, a supporting rod, a connecting pipe, a fixed groove, a positioning rod, a spring, a positioning groove, a rotating rod, a pull rope and a rotating block. DETAILED DESCRIPTION

[0027] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be further introduced in detail below in conjunction with the drawings.

[0028] The utility model discloses a circulating pump variable flow regulation and control device of heat exchange station of thermal power plant.

[0029] Embodiment 1

[0030] The utility model provides a circulating pump variable flow regulation and control device of heat exchange station of thermal power plant as Figures 1-5 The utility model discloses a circulating pump variable flow regulation and control device of heat exchange station of thermal power plant, which comprises a circulating pump 1, a return pipe 2 and a frequency converter 3.

[0031] The utility model discloses a circulating pump variable flow regulation and control device of heat exchange station of thermal power plant, which comprises a circulating pump 1, a return pipe 2 and a frequency converter 3.

[0032] Before the flow of the circulating pump 1 is regulated, the back side of the touch plate 7 is exposed, and the surface touch area of the touch plate 7 is effectively protected in the shell 5. When the regulation work is needed, the touch plate 7 can be flipped so that the touch plate 7 is flipped from the top of the shell 5 to the side of the shell 5. At this time, the regulation data can be input through the touch plate 7. After the data input is completed, the touch plate 7 is flipped and rotated to the original position. The pressing block 8 is inserted into the groove 9 and contacts the pressing receiver 10. The pressing receiver 10 transmits an end signal to the control circuit board 6. At this time, the control circuit board 6 transmits the input data in the touch plate 7 to the frequency converter 3. The frequency converter 3 accurately regulates the circulating pump 1. At the same time, the touch plate 7 can be effectively protected.

[0033] Embodiment 2

[0034] In order to effectively flip the touch plate 7, embodiment 2 is based on embodiment 1. As shown in Figures 1-3 The top of the shell 5 is provided with a rotating groove 12 matched with the rotation of the touch plate 7. The rotating groove 12 is provided with a flip regulation mechanism for supporting the flip of the touch plate 7. The flip regulation mechanism comprises a supporting rod 13 fixedly arranged in the rotating groove 12. A connecting pipe 14 is rotatably arranged on the rod wall of the supporting rod 13. The connecting pipe 14 is fixedly connected with the touch plate 7. The connecting pipe 14 is a T-shaped connecting pipe. The side of the touch plate 7 is provided with a fixed groove 15 matched with the fixation of the connecting pipe 14.

[0035] When the touch plate 7 is flipped, the connecting pipe 14 rotates around the supporting rod 13. The flip of the touch plate 7 is stably supported by the supporting rod 13. The arrangement of the rotating groove 12 can effectively protect the touch plate 7 after the flip. The arrangement position of the touch plate 7 is horizontally limited to ensure the stability of the touch plate 7.

[0036] Embodiment 3

[0037] In order to determine the position of the touch plate 5 after the use of the touch plate 5, embodiment 3 is based on embodiments 1-2. As shown in Figure 1 and Figures 4-5 A cavity is arranged in the side of the touch plate 7 away from the shell 5. Positioning rods 16 are slidably arranged on both sides of the cavity. Springs 17 are arranged on the rod walls of the positioning rods 16. The two ends of the springs 17 are fixedly connected with the cavity and the positioning rods 16, respectively. A positioning groove 18 matched with the insertion of the positioning rods 16 is arranged on the inner wall of the shell 5. A rotating rod 19 is rotatably arranged on the back side of the touch plate 7. The end of the rotating rod 19 extends into the cavity. Two symmetrical pulling ropes 20 are fixedly arranged on the rod wall of the rotating rod 19. The two pulling ropes 20 are arranged in a staggered and crossed manner. The ends of the pulling ropes 20 are fixedly connected with the positioning rods 16. The end of the rotating rod 19 extends out of the cavity and is fixedly provided with a rotating block 21.

[0038] Before using the touchpad 7, the positioning rod 16 is inserted into the positioning slot 18, at this time the position of the touchpad 7 is determined, when it is needed to use the touchpad 7 reversely, the rotating block 21 can be rotated, at this time the rotating block 21 drives the rotating rod 19 to rotate, due to the staggered and crossed arrangement of the two pull ropes 20, the rotating rod 19 can simultaneously wind the two pull ropes 20, under the pulling action of the pull rope 20, the pull rope 20 pulls the positioning rod 16, so that the positioning rod 16 stretches the spring 17 and is pulled out from the positioning slot 18, that is, the touchpad 7 can be used reversely, after use, the positioning rod 16 can be inserted into the positioning slot 18, so that the position of the touchpad 7 can be fixed, which ensures the continuous and stable protection of the touchpad 7.

Claims

1. A variable flow control device for a circulating pump in a heat exchange station of a thermal power plant, comprising a circulating pump (1), a return pipe (2), and a frequency converter (3), characterized in that: The circulation pump (1) is fixedly sleeved on the outer side of the return water pipe (2), and a return water temperature sensor (4) is fixedly sleeved on the pipe wall of the return water pipe (2); The inverter (3) is fixedly sleeved with a housing (5) on the outside, a control circuit board (6) is fixedly provided inside the housing (5), a touch panel (7) is provided at the opening of the housing (5), a pressing block (8) is fixedly provided on the surface of the touch panel (7), a groove (9) is provided at the top of the housing (5), a pressing receiver (10) is fixedly embedded in the groove (9), and the pressing receiver (10) is electrically connected to the control circuit board (6).

2. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 1, characterized in that: A control cable (11) is provided between the circulation pump (1) and the frequency converter (3), and the control circuit board (6) is electrically connected to the frequency converter (3).

3. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 1, characterized in that: A rotation groove (12) for cooperating with the touch panel (7) to rotate is provided on the top of the housing (5), and a flip-over control mechanism for supporting the flipping of the touch panel (7) is provided in the rotation groove (12).

4. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 3, characterized in that: The flip-opening control mechanism comprises a support rod (13), the support rod (13) is fixedly arranged in the rotating groove (12), a connecting tube (14) is rotatably sleeved on the rod wall of the support rod (13), and the connecting tube (14) is fixedly connected to the touch panel (7).

5. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 4, characterized in that: The connecting tube (14) is a T-shaped connecting tube, and a fixing groove (15) for fitting with the connecting tube (14) is provided on the side of the touch panel (7).

6. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 1, characterized in that: A cavity is provided inside the touch panel (7) on a side away from the housing (5), and positioning rods (16) are slidably provided on both sides of the cavity. A spring (17) is sleeved on the wall of the positioning rod (16), and the two ends of the spring (17) are fixedly connected to the cavity and the positioning rod (16) respectively. A positioning groove (18) is provided on the inner wall of the housing (5) to be plugged into the positioning rod (16).

7. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 1, characterized in that: A rotating rod (19) is rotatably provided on the back side of the touch panel (7), the end of which extends into the cavity, and two symmetrically arranged pull ropes (20) are fixedly provided on the rod wall of the rotating rod (19), the ends of which are fixedly connected to the positioning rod (16).

8. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 7, characterized in that: The end of the rotating rod (19) passes through the cavity and is fixed with a rotating block (21).

9. The variable flow control device for a circulating pump in a heat exchange station of a thermal power plant according to claim 7, characterized in that: The two pull ropes (20) are staggered and cross-arranged.

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