Thermal initial station differential pressure protection device

Abstract

The utility model relates to the technical field of heat supply control, and discloses a thermal initial station differential pressure protection device which comprises a bypass pipe, a differential pressure device and a protection shell, a cover plate is installed at the front end of the protection shell, a door lock is installed on the cover plate, an installation groove matched with the bypass pipe is formed in the side face of the protection shell, and a side plate of a U-shaped structure is arranged in the installation groove. A limiting assembly used for limiting the side plate is arranged in the protective shell, a fixing block is fixedly connected to the position, on one side of the mounting groove, of the outer portion of the protective shell, mounting plates matched with the fixing block are fixedly connected to the two ends of the side plate, and the mounting plates are detachably connected to the fixing block. The side plates are installed in the installation grooves by pressing the limiting columns, the threaded rods penetrate through the through holes in the two ends of the installation plates, nuts are installed on the threaded rods and screwed tightly, then installation and fixation of the protection shell are completed, and a positioning groove does not need to be formed in the differential pressure device; and through cooperation of a limiting assembly, a fixing block, a mounting plate and a threaded rod, personnel can be prevented from disassembling the protective shell from the outside, and safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of heating control, in particular to a differential pressure protection device for a thermal power first station. Background Art

[0002] Cities are pursuing environmental protection and clean energy, and using power plant cogeneration or industrial waste heat as the heat source for urban centralized heating has become the mainstream clean energy method. When heating at the first thermal station, a differential pressure device needs to be installed. Because the position of the differential pressure device is of great importance, in order to prevent misoperation or malicious operation, a protective shell needs to be set outside the differential pressure device to protect it. The traditional protective shell requires at least four bolts to fix the front cover and the rear cover, which is troublesome to install and tighten the bolts, and the installation time is long.

[0003] The utility model patent with application number CN202222250704.7 discloses a differential pressure protection device for the first thermal station, including a bypass pipe, a differential pressure device and a protective shell. The two ends of the bypass pipe are respectively connected to the water supply pipe and the return pipe. The differential pressure device is arranged on the bypass pipe, and the protective shell is arranged on the outside of the differential pressure device to protect it. The protective shell is composed of a front cover and a rear cover. The four corners of the shell wall of the front cover close to the rear cover are provided with plug plates. The shell wall of the rear cover away from the front cover is provided with a fixing component connected with the plug plate. The outer wall of the rear cover is provided with a connecting component connected with the fixing component to facilitate the simultaneous movement and fixing of the fixing component. The device can complete the rapid installation of the protective shell, and only two bolts are needed to fix the front cover and the rear cover, which effectively saves the installation time of the protective shell.

[0004] However, in actual applications, the device requires a positioning groove to be opened in the differential pressure device so that the protective shell can be installed stably. For a differential pressure device without a positioning groove, the protective shell cannot be installed stably. The device is fixed by bolts, and the bolts are arranged on the outside of the protective shell. People can complete the disassembly of the protective shell by removing the bolts, and the safety needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a thermal first station differential pressure protection device.

[0006] In order to solve the above problems, the technical solution of the utility model is: a thermal first station differential pressure protection device, including a bypass pipe, a differential pressure device installed on the bypass pipe and a protective shell arranged on the outside of the differential pressure device, a cover plate is installed at the front end of the protective shell, and a door lock is installed on the cover plate, a mounting groove compatible with the bypass pipe is opened on the side of the protective shell, a side plate of a U-shaped structure is provided inside the mounting groove, a limiting assembly for limiting the side plate is provided inside the protective shell, a fixed block is fixedly connected to one side of the mounting groove on the outside of the protective shell, and mounting plates matching the fixed block are fixedly connected at both ends of the side plate, and the mounting plate is detachably connected to the fixed block.

[0007] Furthermore, a through slot is formed on one side of the protective shell away from the mounting slot, and a dustproof net is installed in the through slot.

[0008] Furthermore, two limit assemblies are provided.

[0009] Furthermore, the limiting assembly includes a fixed box, a stopper is fixedly connected in the middle of the fixed box, movable plates are symmetrically provided on both sides of the stopper, a spring is connected between the movable plate and the stopper, and a limiting column penetrating the side wall of the fixed box is fixedly connected to the other side of the movable plate.

[0010] Furthermore, the fixing box is installed inside the side panel.

[0011] Furthermore, the mounting plate is an arc-shaped plate, and through holes are formed at both ends thereof. Two threaded rods penetrating the through holes are fixedly connected to one side of the fixing block, and nuts are installed on the threaded rods.

[0012] Furthermore, a reinforcement block is fixedly connected to the end of the side plate on one side of the mounting plate.

[0013] The advantages of the utility model compared with the existing technology are: the utility model completes the installation and fixation of the protective shell by pressing the limit column and installing the side plate in the installation groove, and allowing the threaded rod to pass through the through holes at both ends of the installation plate, and installing nuts on the threaded rod and tightening them, without opening a positioning groove on the differential pressure device; through the cooperation of the limit assembly, the fixing block, the installation plate and the threaded rod, it can prevent people from disassembling the protective shell from the outside, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a three-dimensional Figure 1 .

[0015] Figure 2 The utility model is a three-dimensional Figure 2 .

[0016] Figure 3 It is a cross-sectional view of the utility model.

[0017] Figure 4 It is a structural diagram of the limit assembly of the utility model.

[0018] Figure 5 This utility model Figure 1 A magnified view of the structure in the middle.

[0019] As shown in the figure: 1. Bypass pipe; 2. Differential pressure device; 3. Protective shell; 4. Cover plate; 5. Side plate; 6. Fixed box; 7. Stop block; 8. Movable plate; 9. Spring; 10. Limit column; 11. Fixed block; 12. Mounting plate; 13. Threaded rod; 14. Reinforcement block; 15. Dust net. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] like Figure 1 and Figure 2 As shown, a differential pressure protection device for a thermal power first station includes a bypass pipe 1, a differential pressure device 2 installed on the bypass pipe 1, and a protective shell 3 arranged on the outside of the differential pressure device 2, a cover plate 4 is installed at the front end of the protective shell 3, and a door lock is installed on the cover plate 4, a mounting groove adapted to the bypass pipe 1 is opened on the side of the protective shell 3, a side plate 5 of a U-shaped structure is arranged inside the mounting groove, a limiting component for limiting the side plate 5 is arranged inside the protective shell 3, a through groove is opened on the side of the protective shell 3 away from the mounting groove, and a dustproof net 15 is installed in the through groove.

[0022] The design of the through slot and the dustproof net 15 can prevent external dust from entering the protective shell 3, and at the same time, when the differential pressure device 2 alarms, the alarm sound can be transmitted smoothly. After opening the cover plate 4, the differential pressure device 2 can be operated.

[0023] like Figure 3 and Figure 4 As shown, there are two limit assemblies, which include a fixed box 6, which is fixedly installed inside the side plate 5, and a stopper 7 is fixedly connected in the middle of the fixed box 6, and movable plates 8 are symmetrically provided on both sides of the stopper 7, a spring 9 is connected between the movable plate 8 and the stopper 7, and a limit column 10 that passes through the side wall of the fixed box 6 is fixedly connected to the other side of the movable plate 8.

[0024] Press the limit column 10 so that the distance between the ends of the two limit columns 10 is smaller than the width of the installation groove. At this time, the side panel 5 can be installed in the installation groove, and the limit column 10 is loosened. Under the action of the spring 9, the limit column 10 moves outward, so that the limit column 10 can abut against the inner wall of the protective shell 3, thereby preventing the side panel 5 from falling off from the installation groove.

[0025] like Figure 5As shown, a fixing block 11 is fixedly connected to one side of the mounting groove on the outside of the protective shell 3, and mounting plates 12 matching the fixing block 11 are fixedly connected to both ends of the side panels 5. The mounting plates 12 are detachably connected to the fixing blocks 11. The mounting plates 12 are arc-shaped plates with through holes at both ends. Two threaded rods 13 passing through the through holes are fixedly connected to one side of the fixing block 11, and nuts are installed on the threaded rods 13. A reinforcing block 14 is fixedly connected to the end of the side panel 5 on one side of the mounting plate 12.

[0026] When installing the side plate 5, the threaded rod 13 is passed through the through holes at both ends of the mounting plate 12, and nuts are installed on the threaded rod 13 and tightened. The protective shell 3 can be stably installed on the bypass pipe 1 through the cooperation between the mounting plate 12 and the fixing block 11.

[0027] In specific use, press the limit column 10 and install the side panel 5 in the installation groove, and make the threaded rod 13 pass through the through holes at both ends of the installation plate 12, install the nut on the threaded rod 13 and tighten it, and the installation and fixation of the protective shell 3 is completed; because the limit column 10 abuts against the inner wall of the protective shell 3, the side panel 5 cannot move outward in the horizontal direction, and at the same time, the threaded rod 13 is inserted into the through holes at both ends of the installation plate 12, so that the side panel 5 cannot move in the vertical direction, thereby preventing people from disassembling the protective shell 3 from the outside, which is safer.

[0028] The undisclosed parts in the present invention are all prior art, and their specific structures and working principles are not described in detail.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0031] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A thermal power first station differential pressure protection device, comprising a bypass pipe (1), a differential pressure device (2) installed on the bypass pipe (1), and a protective shell (3) arranged outside the differential pressure device (2), wherein a cover plate (4) is installed at the front end of the protective shell (3), and a door lock is installed on the cover plate (4), characterized in that: The side of the protective shell (3) is provided with a mounting groove matched with the bypass pipe (1), a side plate (5) with a U-shaped structure is provided inside the mounting groove, a limiting component for limiting the side plate (5) is provided inside the protective shell (3), a fixing block (11) is fixedly connected to one side of the mounting groove outside the protective shell (3), and mounting plates (12) matching with the fixing block (11) are fixedly connected to both ends of the side plate (5), and the mounting plate (12) is detachably connected to the fixing block (11).

2. A thermal power first station differential pressure protection device according to claim 1, characterized in that: A through slot is provided on a side of the protective shell (3) away from the installation slot, and a dustproof net (15) is installed in the through slot.

3. A thermal power first station differential pressure protection device according to claim 1, characterized in that: The limiting components are provided with two.

4. A thermal power first station differential pressure protection device according to claim 1, characterized in that: The limiting assembly comprises a fixed box (6), a stopper (7) is fixedly connected in the middle of the fixed box (6), movable plates (8) are symmetrically provided on both sides of the stopper (7), a spring (9) is connected between the movable plate (8) and the stopper (7), and a limiting column (10) penetrating the side wall of the fixed box (6) is fixedly connected to the other side of the movable plate (8).

5. A thermal power first station differential pressure protection device according to claim 4, characterized in that: The fixing box (6) is fixedly installed inside the side plate (5).

6. A thermal power first station differential pressure protection device according to claim 1, characterized in that: The mounting plate (12) is an arc-shaped plate with through holes at both ends. One side of the fixing block (11) is fixedly connected with two threaded rods (13) passing through the through holes, and nuts are installed on the threaded rods (13).

7. A thermal power first station differential pressure protection device according to claim 1, characterized in that: The end of the side plate (5) is fixedly connected to a reinforcement block (14) on one side of the mounting plate (12).

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