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CN-224229538-U - Ground source heat pump four-way pressing plugging pipe fitting

CN224229538UCN 224229538 UCN224229538 UCN 224229538UCN-224229538-U

Abstract

The utility model discloses a ground source heat pump four-way pressurizing plugging pipe fitting, which relates to the technical field of geothermal energy, and comprises a shell, a connecting component, a pressure measuring component, a plugging component and a pressurizing component, wherein one end of the shell is connected with the connecting component, an injection channel is formed in the other end of the shell, the plugging component is arranged at one end of the shell far away from the connecting component and used for controlling the opening and closing of the inner end of the injection channel, and the connecting component is of a four-way structure and used for communicating a double U-shaped buried pipe. The single device can be connected with the double U-shaped buried pipe and performs a pressure test without repeated operation, so that the operation steps can be greatly reduced, and the operation efficiency is improved. The double U-shaped buried pipe can conveniently and fast seal and connect the end part of the double U-shaped buried pipe with the connecting pipe, so that the buried pipe has the technical advantages of convenient assembly and disassembly, reduced hot melting times of the buried pipe, effective prevention of breakage of the hot melting position and avoidance of pressure relief accidents.

Inventors

  • Meng Chuibin
  • ZHU YUGUO
  • WANG JIDE
  • ZHANG JIARONG
  • LIU YONGQIANG
  • ZHU YUANSONG

Assignees

  • 起航(山东)投资建设集团有限公司
  • 山东地勘地热新能源集团有限公司

Dates

Publication Date
20260512
Application Date
20250611

Claims (10)

  1. 1. The four-way pressurizing plugging pipe fitting of the ground source heat pump is characterized by comprising a shell (1), a connecting assembly (2), a pressure measuring assembly (3), a plugging assembly (4) and a pressurizing assembly; One end of the shell (1) is connected with the connecting component (2), and the other end of the shell is provided with an injection channel (132); The plugging assembly (4) is arranged at one end of the shell (1) far away from the connecting assembly (2) and is used for controlling the opening and closing of the inner end (1322) of the injection channel (132), and the pressurizing assembly is detachably connected with the outer end (1321) of the injection channel (132); The pressure measuring assembly (3) is arranged at the side wall position of the shell (1); the connecting component (2) is of a four-way structure and is used for being communicated with the double U-shaped buried pipe (5).
  2. 2. The ground source heat pump four-way pressing plugging pipe fitting according to claim 1, wherein the shell (1) comprises a straight cylinder part (11), an expansion part (12), a first sealing plate (13) and a second sealing plate (14), the straight cylinder part (11) and the expansion part (12) are coaxially arranged, the end parts of the straight cylinder part and the expansion part (12) are in sealing connection with each other, an inner cavity of the straight cylinder part (11) is communicated with an inner cavity of the expansion part (12), the first sealing plate (13) is arranged at one end, far away from the expansion part (12), of the straight cylinder part (11), the second sealing plate (14) is arranged at one end, far away from the straight cylinder part (11), of the expansion part (12), the injection channel (132) is arranged in the first sealing plate (13), and the plugging assembly (4) is connected with the first sealing plate (13).
  3. 3. The ground source heat pump four-way pressing plugging pipe fitting according to claim 2, wherein the four-way structure comprises four connecting pipes (21) which are spliced with the second sealing plate (14).
  4. 4. The ground source heat pump four-way pressing plugging pipe fitting according to claim 3 is characterized in that the connecting pipes (21) are arranged in parallel, and the inner cavity of the connecting pipe (21) is communicated with the inner cavity of the shell (1).
  5. 5. The four-way pressurizing plugging pipe fitting of the ground source heat pump according to claim 4, wherein the arrangement direction of the injection channel (132) is L-shaped.
  6. 6. The ground source heat pump four-way pressing plugging pipe fitting according to claim 5, wherein the plugging assembly (4) comprises a bolt (41), a nut (42) and a first sealing ring (43) for plugging an inner end (1322) of the injection channel (132), the bolt (41) comprises a column head (411) and a stud vertically and fixedly connected with the column head (411), the first sealing plate (13) is provided with an inserting hole (131), the stud is inserted into the inserting hole (131), the first sealing ring (43) is sleeved on the outer surface of the stud and is in pressure connection with the column head (411), the column head (411) is arranged at one end, far away from the connecting assembly (2), of an inner cavity of the shell (1), and the nut (42) is arranged at the outer end face position of the first sealing plate (13).
  7. 7. The ground source heat pump four-way pressing plugging pipe fitting according to claim 6, wherein the first sealing ring (43) is arranged between the column head (411) and the first sealing plate (13).
  8. 8. The four-way pressurizing plugging pipe fitting according to claim 7, wherein the projection of the first sealing ring (43) on the inner wall of the first sealing plate (13) is a first projection, and the inner end (1322) of the injection channel (132) is arranged in the first projection range.
  9. 9. The ground source heat pump four-way pressing plugging pipe fitting according to claim 8, wherein the cross section of the inner cavity of the straight barrel part (11) is hexagonal, the inner wall of the straight barrel part (11) is matched with the outer side wall of the column head (411) in a clearance fit manner, and a flow-around channel (111) is formed in the inner wall of the straight barrel part (11).
  10. 10. The ground source heat pump four-way pressing plugging pipe fitting according to claim 9, wherein the pressure measuring assembly (3) comprises an extension pipe (31) and a pressure gauge (32), the pressure gauge (32) is fixedly connected to the outer side end portion of the extension pipe (31), the extension pipe (31) and the straight barrel portion (11) are in plug-in connection, an inner end (1322) of the extension pipe (31) is provided with an inner extending portion (311), and the inner extending portion (311) is used for abutting against the column head (411) so as to prevent the bolt (41) from falling out of the jack (131).

Description

Ground source heat pump four-way pressing plugging pipe fitting Technical Field The utility model relates to the technical field of geothermal energy, in particular to a four-way pressurizing plugging pipe fitting of a ground source heat pump. Background A ground source heat pump, also called geothermal heat pump, is a system that utilizes geothermal energy for air conditioning and hot water supply. The geothermal energy source comprises soil, surface water, underground water and the like, and the stable temperature in the underground soil is mainly utilized for heat exchange, so that the functions of heating, refrigerating, hot water and the like are realized. The buried pipe requires a pressure test to be performed before installation into a pump well or trench for quality testing. In the pressure test, the buried pipe is maintained for at least one hour. The traditional technology is mainly aimed at pressure test products of single U-shaped buried pipes, and then two products are used for carrying out pressure tests on double U-shaped buried pipes, so that the operation is complex, and the working efficiency is reduced. Disclosure of Invention In order to solve the problems of complicated test operation and reduced working efficiency caused by the lack of a pressure test product aiming at a double U-shaped buried pipe in the background technology, the utility model provides a four-way pressurizing plugging pipe fitting of a ground source heat pump. The technical scheme includes that the ground source heat pump four-way pressurizing plugging pipe fitting comprises a shell, a connecting assembly, a pressure measuring assembly, a plugging assembly and a pressurizing assembly, wherein one end of the shell is connected with the connecting assembly, an injection channel is formed in the other end of the shell, the plugging assembly is arranged at one end of the shell, which is far away from the connecting assembly, and used for controlling opening and closing of the inner end of the injection channel, the pressurizing assembly is detachably connected with the outer end of the injection channel, the pressure measuring assembly is arranged at the side wall of the shell, and the connecting assembly is of a four-way structure and used for communicating double U-shaped buried pipes. As a further optimization scheme of the utility model, the shell comprises a straight cylinder part, an expansion part, a first sealing plate and a second sealing plate, wherein the straight cylinder part and the expansion part are coaxially arranged, the end parts of the straight cylinder part and the expansion part are in sealing connection with each other, the inner cavity of the straight cylinder part and the inner cavity of the expansion part are mutually communicated, the first sealing plate is arranged at one end of the straight cylinder part far away from the expansion part, the second sealing plate is arranged at one end of the expansion part far away from the straight cylinder part, the injection channel is arranged in the first sealing plate, and the plugging assembly is connected with the first sealing plate. As a further optimized scheme of the utility model, the four-way structure comprises four connecting pipes which are spliced with the second sealing plate. As a further optimization scheme of the utility model, the connecting pipes are arranged in parallel, and the inner cavities of the connecting pipes are communicated with the inner cavity of the shell. As a further optimization scheme of the utility model, the arrangement direction of the injection channel is L-shaped. As a further optimization scheme of the utility model, the plugging assembly comprises a bolt, a nut and a first sealing ring for plugging the inner end of the injection channel, wherein the bolt comprises a column head and a stud vertically and fixedly connected with the column head, the first sealing plate is provided with an inserting hole, the stud is inserted into the inserting hole, the first sealing ring is sleeved on the outer surface of the stud and is in compression joint with the column head, the column head is arranged at one end, far away from the connecting assembly, of the inner cavity of the shell, and the nut is arranged at the outer end face position of the first sealing plate. As a further refinement of the utility model, the first sealing ring is arranged between the stud and the first sealing plate. As a further optimization scheme of the utility model, the projection of the first sealing ring on the inner wall of the first sealing plate is a first projection, and the inner end of the injection channel is arranged in the first projection range. As a further optimization scheme of the utility model, the cross section of the inner cavity of the straight barrel part is hexagonal, the inner wall of the straight barrel part is matched with the outer side wall of the column head in a clearance fit manner, and the inner wall of the straig