Economizer convenient to install

Abstract

The utility model relates to a convenient-to-install economizer, which comprises a box body, a heat exchanger and a heat exchanger, the inlet pipe, the outlet pipe and the bent pipe are connected to the two sides of the box body respectively, and pipe bodies penetrate through the side wall of the box body; the connecting pipes are arranged in the box body and are connected between the inlet pipe and the bent pipe which are opposite to each other, between the bent pipes which are opposite to each other and between the outlet pipe and the bent pipe which are opposite to each other; threads are formed in the pipe sleeve; wherein the surfaces of pipe bodies of the inlet pipe, the outlet pipe and the bent pipe extending into the inner side of the box body are provided with first threads, the surfaces of pipe bodies at the two ends of the connecting pipe are provided with second threads, the pipe sleeve is screwed into the first threads and the second threads simultaneously, and meanwhile the pipe sleeve is in pin joint with the connecting pipe. During disassembly, the connecting pipe can be separated from the inlet pipe, the outlet pipe and the bent pipe only by pulling up the pin and screwing the pipe sleeve into the first thread again, the structure is simple, and the connecting pipe is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of economizers, in particular to an economizer which is easy to install. Background Art

[0002] Economizers are generally used in flue gas denitrification systems. Economizers usually include a box and pipe fittings. The pipe fittings include inlet pipes, outlet pipes, bent pipes and connecting pipes welded together. The pipe fittings are installed as a whole in the box. When part of the pipes are damaged, they need to be disassembled and replaced as a whole, which is time-consuming, labor-intensive and costly.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] In view of the deficiencies in the prior art, an embodiment of the utility model discloses an economizer that is easy to install, so as to solve the problem that the disassembly and assembly of economizer pipes is time-consuming, labor-intensive and costly.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A coal economizer which is easy to install, the coal economizer comprising: a box body which is a hollow structure; an inlet pipe, an outlet pipe and a bent pipe which are respectively connected to the two sides of the box body, and the pipe body passes through the side wall of the box body; a connecting pipe which is arranged in the box body and connected between the opposite inlet pipes and the bent pipes, between the opposite bent pipes, and between the opposite outlet pipes and the bent pipes; a pipe sleeve which has a thread inside; wherein the pipe body surfaces of the inlet pipe, the outlet pipe and the bent pipe extending into the inner part of the box body have a first thread, and the pipe body surfaces at both ends of the connecting pipe have a second thread, the pipe sleeve is screwed into the first thread and the second thread at the same time, and the pipe sleeve is pinned to the connecting pipe.

[0007] Its further technical solution is that the pipe sleeve includes: a first through hole, the inner surface of which has a thread that matches the first thread and the second thread; a pin that passes through the inner wall of the pipe sleeve and is elastically connected to the inner wall of the pipe sleeve; the connecting pipe includes: a pin hole that is opened on the surface of the pipe body at both ends of the connecting pipe, and the position corresponds to the pin.

[0008] A further technical solution is that the pin includes: a ring body, which is arranged on the outside of the pin; the sleeve includes: a groove, which is opened on the inner wall of the sleeve, and the ring body is slidably arranged in the groove; an elastic member, the first end of which is connected to the groove, and the second end of which is connected to the ring body.

[0009] A further technical solution is that the box body includes: a second through hole, which is opened on both sides of the box body for the inlet pipe, the outlet pipe and the bent pipe to pass through; a screw hole, which is opened on both sides of the box body; the inlet pipe, the outlet pipe and the bent pipe include: a connecting plate, which is arranged on the inlet pipe, the outlet pipe and the bent pipe, and the screw holes are connected with screws.

[0010] A further technical solution is that the connecting pipe comprises: fins, which are arranged on the outside of the connecting pipe.

[0011] A further technical solution is that the box body includes: legs arranged at the bottom of the box body.

[0012] The beneficial effects of the embodiments of the utility model are as follows:

[0013] (1) The utility model is an economizer that is easy to install, including a box body, an inlet pipe, an outlet pipe, a bent pipe, a connecting pipe and a pipe sleeve. When the connecting pipe is not provided, the pipe sleeve is only screwed into the first thread. When installation is required, the connecting pipe is docked with the inlet pipe, the outlet pipe and the bent pipe respectively, and the pipe sleeve is screwed into the first thread and the second thread at the same time. After the pipe sleeve is screwed into place, the pin is inserted into the pin hole under the elastic force of the elastic member to limit the circumferential rotation of the pipe sleeve. The first thread and the second thread limit the axial movement of the pipe sleeve to fix the connecting pipe and the inlet pipe, the outlet pipe and the bent pipe. When disassembling, it is only necessary to pull up the pin and screw the pipe sleeve back into the first thread to separate the connecting pipe from the inlet pipe, the outlet pipe and the bent pipe. The structure is simple and the connecting pipe is easy to disassemble and install.

[0014] (ii) Furthermore, the connecting plates of the inlet pipe, outlet pipe and bent pipe are connected to the side screws of the box body, the structure is simple, and the inlet pipe, outlet pipe and bent pipe are easy to disassemble and install, saving the cost of product replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of an economizer which is easy to install according to the utility model.

[0016] Figure 2 The utility model is a schematic diagram of a top view of the structure of an economizer that is easy to install.

[0017] Figure 3 for Figure 2 Zoom in on the structural diagram at A.

[0018] Figure 4 The utility model is a schematic structural diagram of a pipe sleeve in an economizer which is easy to install.

[0019] Figure 5 The utility model is a schematic diagram of the side structure of an economizer that is easy to install.

[0020] Figure 6The utility model is a schematic diagram of the side structure of an economizer that is easy to install after the bent tubes are removed.

[0021] Figure 7 The utility model is a structural schematic diagram of a bent tube in an economizer which is easy to install.

[0022] In the figure:

[0023] 1. Box body; 11. Second through hole; 12. Screw hole; 13. Support foot; 2. Inlet pipe; 3. Outlet pipe; 4. Bending pipe; 41. First thread; 42. Connecting plate; 5. Connecting pipe; 51. Second thread; 52. Pin hole; 53. Fin; 6. Pipe sleeve; 61. First through hole; 62. Pin; 621. Ring body; 63. Elastic member; 64. Groove. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0025] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.

[0026] First embodiment:

[0027] This embodiment discloses an economizer that is easy to install.

[0028] like Figure 1 and Figure 2 As shown, the economizer includes a box body 1, an inlet pipe 2, an outlet pipe 3, a bent pipe 4, a connecting pipe 5 and a pipe sleeve 6.

[0029] The box body 1 is a hollow structure, and has a flow channel running through from top to bottom for the boiler flue gas to flow.

[0030] The inlet pipe 2 , the outlet pipe 3 and the bent pipe 4 are respectively connected to the two sides of the box body 1 , and the pipe body passes through the side wall of the box body 1 .

[0031] The connecting pipe 5 is arranged in the box body 1, connected between the opposite inlet pipes 2 and the bending pipes 4, between the opposite bending pipes 4, and between the opposite outlet pipes 3 and the bending pipes 4. Specifically, the inlet pipe 2 and the outlet pipe 3 are connected to the same side of the box body 1, and the bending pipes 4 are connected to both sides of the box body 1 respectively.

[0032] like Figure 3 As shown, the pipe sleeve 6 has threads inside. The pipe surfaces of the inlet pipe 2, outlet pipe 3 and bent pipe 4 extending into the inner side of the box body 1 have first threads 41, and the pipe surfaces of the two ends of the connecting pipe 5 have second threads 51. The pipe sleeve 6 is screwed into the first threads 41 and the second threads 51 at the same time, and the pipe sleeve 6 is pinned to the connecting pipe 5.

[0033] like Figure 3 and Figure 4 As shown, exemplarily, the sleeve 6 includes a first through hole 61 and a pin 62. The inner surface of the first through hole 61 has a thread that matches the first thread 41 and the second thread 51. The pin 62 passes through the inner wall of the sleeve 6 and is elastically connected to the inner wall of the sleeve 6. Specifically, the pin 62 includes a ring body 621, and the ring body 621 is arranged outside the pin 62. The sleeve 6 includes a groove 64 and an elastic member 63. The groove 64 is opened on the inner wall of the sleeve 6, and the ring body 621 is slidably arranged in the groove 64. The first end of the elastic member 63 is connected to the groove 64, and the second end is connected to the ring body 621. The connecting pipe 5 includes a pin hole 52, and the pin hole 52 is opened on the surface of the pipe body at both ends of the connecting pipe 5, and the position corresponds to the pin 62. The length of the first thread 41 is greater than the thickness of the sleeve 6, ensuring that the sleeve 6 will not affect the docking of the connecting pipe 5 with the inlet pipe 2, the outlet pipe 3 and the bending pipe 4.

[0034] like Figure 3 As shown, further, the connecting pipe 5 includes fins 53, and the fins 53 are arranged on the outside of the connecting pipe 5. The fins 53 increase the contact area with the boiler flue gas and improve the heat exchange efficiency of the economizer.

[0035] like Figure 1 As shown, further, the box body 1 includes a support leg 13, and the support leg 13 is arranged at the bottom of the box body 1 to facilitate the placement and fixing of the economizer.

[0036] In this embodiment, when the connecting pipe 5 is not provided, the pipe sleeve 6 is only screwed into the first thread 41. When installation is required, the ends of the connecting pipe 5 are respectively connected with the inlet pipe 2, the outlet pipe 3 and the bending pipe 4, and the pipe sleeve 6 is screwed into the first thread 41 and the second thread 51 at the same time. After the pipe sleeve 6 is screwed into place, the pin 62 is clamped into the pin hole 52 under the elastic force of the elastic member 63, limiting the circumferential rotation of the pipe sleeve 6. The first thread 41 and the second thread 51 limit the axial movement of the pipe sleeve 6 to fix the connecting pipe 5 with the inlet pipe 2, the outlet pipe 3 and the bending pipe 4. When disassembling, it is only necessary to pull out the pin 62 and screw the pipe sleeve 6 back into the first thread 41 to separate the connecting pipe 5 from the inlet pipe 2, the outlet pipe 3 and the bending pipe 4. The structure is simple, the connecting pipe 5 is easy to disassemble and install, and the product replacement cost is saved.

[0037] Second embodiment:

[0038] Based on the first embodiment, the second embodiment is further optimized and refined.

[0039] like Figure 5 to Figure 7 As shown, further, the box body 1 includes a second through hole 11 and a screw hole 12. The second through hole 11 is opened on both sides of the box body 1 for the inlet pipe 2, the outlet pipe 3 and the bent pipe 4 to pass through. The screw hole 12 is opened on both sides of the box body 1. The inlet pipe 2, the outlet pipe 3 and the bent pipe 4 include a connecting plate 42, which is arranged on the inlet pipe 2, the outlet pipe 3 and the bent pipe 4, and the connecting plate 42 is screwed to the screw hole 12.

[0040] In this embodiment, the connecting plate 42 of the inlet pipe 2, outlet pipe 3 and bent pipe 4 is connected to the side screw of the box body 1, the structure is simple, the inlet pipe 2, outlet pipe 3 and bent pipe 4 are easy to disassemble and install, and the product replacement cost is saved.

[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An economizer that is easy to install, characterized in that: The economizer comprises: The box body is a hollow structure; The inlet pipe, outlet pipe and bent pipe are respectively connected to the two sides of the box body, and the pipe body passes through the side wall of the box body; A connecting pipe, disposed in the box, connected between the opposite inlet pipes and the bent pipes, between the opposite bent pipes, and between the opposite outlet pipes and the bent pipes; A pipe sleeve having threads on the inside; Among them, the tube surfaces of the inlet pipe, the outlet pipe and the bent pipe extending into the inner part of the box body have a first thread, the tube surfaces at both ends of the connecting pipe have a second thread, the pipe sleeve is screwed into the first thread and the second thread at the same time, and the pipe sleeve is pinned to the connecting pipe.

2. The economizer that is easy to install according to claim 1, characterized in that: The sleeve comprises: a first through hole, the inner surface of which has threads matching the first threads and the second threads; A pin passes through the inner wall of the sleeve and is elastically connected to the inner wall of the sleeve; The connecting pipe comprises: Pin holes are formed on the surfaces of the tube body at both ends of the connecting tube, and their positions correspond to the pins.

3. The economizer that is easy to install according to claim 2, characterized in that: The pin comprises: A ring body, arranged outside the pin; The sleeve comprises: A groove is formed on the inner wall of the sleeve, and the ring body is slidably disposed in the groove; An elastic member has a first end connected to the groove and a second end connected to the ring body.

4. The economizer that is easy to install according to claim 1, characterized in that: The box body comprises: second through holes, which are opened on both sides of the box body and are used for the inlet pipe, the outlet pipe and the bent pipe to pass through; Screw holes are provided on both sides of the box body; The inlet pipe, the outlet pipe and the bent pipe include: A connecting plate is arranged on the inlet pipe, the outlet pipe and the bent pipe, and is screwed to the screw holes.

5. The economizer that is easy to install according to claim 1, characterized in that: The connecting pipe comprises: The fin is arranged on the outside of the connecting pipe.

6. The economizer that is easy to install according to claim 1, characterized in that: The box body comprises: supporting legs, which are arranged at the bottom of the box body.

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