CN210457557U - Low-temperature multi-effect seawater desalination evaporator assembly device - Google Patents
Low-temperature multi-effect seawater desalination evaporator assembly device Download PDFInfo
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- CN210457557U CN210457557U CN201920994661.9U CN201920994661U CN210457557U CN 210457557 U CN210457557 U CN 210457557U CN 201920994661 U CN201920994661 U CN 201920994661U CN 210457557 U CN210457557 U CN 210457557U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A20/124—Water desalination
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Abstract
The utility model discloses a pair device of a low-temperature multi-effect seawater desalination evaporator, which comprises a fixed support rod, an adjustable support rod and a telescopic part which are arranged in sequence; the adjustable support rod is detachably connected between the fixed support rod and the telescopic part, and the telescopic part can stretch along the axial direction of the adjustable support rod; the opening parts of the fixed supporting rod and the adjustable supporting rod are fixedly connected with blocking plates, and backing plates which are in contact with the inner wall of the evaporator are fixed on the fixed supporting rod and the telescopic part. The utility model discloses can be used for adjusting circular evaporator's circularity and can adjust square evaporator roughness again. The utility model is suitable for an among square evaporimeter and the circular evaporimeter for use when the group welds.
Description
Technical Field
The utility model belongs to the technical field of equipment assembly, a group of multi-effect evaporator of sea water desalination is to installation, specifically speaking is a group of circular low temperature multi-effect sea water desalination evaporator is to method.
Background
Water is a source of life and an artery for social and economic development. Although 70% of the area on earth is covered by water, people rely on fresh water to live accounting for 2.5% to 3% of the total water. In view of 70% of human living in the place less than 120 km away from the sea, vast sea is used as a source for obtaining fresh water, and desalinated seawater is used as a powerful supplementary measure of the existing water source and can meet the domestic water demand of people under certain conditions. The existing seawater desalination distillation method mainly comprises two methods, namely low-temperature multi-effect distillation and multi-stage flash distillation. The low-temperature multi-effect distillation is a seawater desalination process which utilizes steam to condense in a condensing tube so that seawater is gradually and multi-effect evaporated outside the condensing tube to obtain fresh water. The low-temperature multi-effect distillation seawater desalination can use low-pressure steam extraction of a power plant as a heating source to form a seawater desalination mode of water and electricity cogeneration, so that the seawater desalination mode is paid attention by all parties.
The low-temperature multi-effect seawater desalination evaporator is formed by connecting a plurality of evaporators in series, a square evaporator of large-scale seawater desalination equipment (more than 3000 t/d) is large in size, the material of the square evaporator is mostly super duplex stainless steel, the assembly and welding technical requirement is high, the assembly and welding difficulty is high, the square evaporator belongs to ultrathin (8-10 mm) ultra-large heat exchange equipment, in order to ensure accurate connection of all evaporators during final assembly of the low-temperature multi-effect seawater desalination evaporator, the assembly and welding quality of all evaporators must be controlled, particularly, the roundness of a single-effect circular evaporator and the flatness of the single-effect square evaporator are adjusted, and the precision requirement of the whole equipment during final assembly is ensured.
At present, the low-temperature multi-effect seawater desalination evaporator is large in overall dimension, and the evaporator body is made of a seawater corrosion resistant duplex stainless steel material, so that in the prior art, the assembly wedge for the seawater desalination evaporator needs to be subjected to spot welding on the evaporator equipment body, the equipment body is easy to damage, and the evaporator duplex stainless steel material is polluted. In addition, the prior art also has a tool which adopts a plurality of support rods with the same length to simultaneously prop against the inside of the evaporator so as to adjust the roundness of the evaporator, and the prior art has the following defects in use: firstly, the length of the supporting rod cannot be changed according to the diameter of the evaporator, so that the supporting rod can only be used for adjusting a circular evaporator with a single model; secondly, a plurality of support rods in the prior art are radially arranged on the tire post, so that the tool can only be used for adjusting the roundness of a round evaporator, but cannot be used for adjusting the flatness of a square evaporator, and has great limitation in use; thirdly, due to the fact that the wall thickness of the evaporator is thin, when the roundness of the circular evaporator is adjusted in the mode, local parts of evaporator equipment are easily over concentrated, and welding quality of welding seams of the evaporator is affected.
SUMMERY OF THE UTILITY MODEL
For solving the above not enough that exists among the prior art, the utility model aims at providing a low temperature multiple-effect seawater desalination evaporator group is to device to reach the mesh that can be used for adjusting circular evaporator's circularity and can adjust square evaporator roughness again.
In order to achieve the above object, the utility model adopts the following technical scheme: a pair device of a low-temperature multi-effect seawater desalination evaporator set comprises a fixed supporting rod, an adjustable supporting rod and a telescopic part which are arranged in sequence; the adjustable support rod is detachably connected between the fixed support rod and the telescopic part, and the telescopic part can stretch along the axial direction of the adjustable support rod; the opening parts of the fixed supporting rod and the adjustable supporting rod are fixedly connected with blocking plates, and backing plates which are in contact with the inner wall of the evaporator are fixed on the fixed supporting rod and the telescopic part.
As the utility model discloses an it is injectd, fixedly connected with haplopore hanger plate on the fixed stay bar, the distance of haplopore hanger plate to fixed stay bar upper padding plate equals with the distance of haplopore hanger plate to pars contractilis upper padding plate.
As the utility model discloses a further inject, adjustable support bar passes through the flange with fixed support bar and can dismantle the connection, and adjustable support bar passes through the flange with the pars contractilis and can dismantle the connection.
As a further limitation of the present invention, the expansion part is a jack.
As the utility model discloses a further inject, fixed support bar, adjustable support bar have the carbon steel pipe of plastic tubing for the surface cladding, and the closure plate on fixed support bar and the pars contractilis all adopts stainless steel.
Due to the adoption of the technical scheme, the utility model discloses a low temperature multiple-effect seawater desalination evaporator group compares the device with prior art, and the beneficial effect who gains is:
(1) the utility model can select the adjustable support rod with the adaptive length according to the diameter of the first circular evaporator, so that the low-temperature multi-effect seawater desalination evaporator assembly device can be tightly propped in the first circular evaporator;
(2) the low-temperature multi-effect seawater desalination evaporator pairing device is placed at different positions in the first circular evaporator, so that two points on the circumference of the first circular evaporator where different diameters are located can be respectively welded and connected with corresponding two points on the circumference of the second circular evaporator; therefore, the roundness of the first circular evaporator can be adjusted, so that the first circular evaporator meets the roundness requirement of pairing with the second circular evaporator, and by adopting the multipoint correction mode, compared with the roundness correction at multiple positions in the prior art, the utility model can effectively evenly disperse the welding stress on the circumference of the circular evaporator, release the stress, avoid the situations of overlarge local stress and large stress residue of the circular evaporator, and ensure the welding quality;
(3) the length of the adjustable supporting rod suitable for use can be selected according to the distance between the top plate and the bottom plate of the square evaporator and the distance between the left side plate and the right side plate, so that the low-temperature multi-effect seawater desalination evaporator pairing device can be tightly propped in the first square evaporator;
(4) the utility model welds the bottom plates of the first square evaporator and the second square evaporator, then the left side plate is correspondingly welded and connected, the right side plate is correspondingly welded and connected, and finally the top plate is welded; therefore, the flatness of the square evaporator can be adjusted, and the first square evaporator meets the flatness requirement of pairing with the second square evaporator; moreover, by adopting the double-point correction mode, the stress can be effectively released, the welding stress is evenly dispersed on the square evaporator, the situations that the local stress of the square evaporator is overlarge and the stress residue is large are avoided, and the welding quality is ensured;
to sum up, the utility model discloses convenient operation, welding efficiency is high, once just can be to successful, and welding quality is good.
The utility model is suitable for an among square evaporimeter and the circular evaporimeter for use when the group welds.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic view of the structural relationship between the adjustable support rod 2 and the telescopic part according to the embodiment of the present invention;
fig. 3 is a schematic view of the structural relationship between the upper blocking plate 6 and the backing plate 5 of the fixed support rod 1 according to the embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a position relationship of a mark point on the periphery of a first circular evaporator according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a position relationship of a mark point on the periphery of a second circular evaporator according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a position relationship of mark points of a first square evaporator according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a position relationship of a mark point of a second square evaporator according to an embodiment of the present invention.
In the figure: 1. fixing the support rod; 2. an adjustable support rod; 3. a jack; 4. a single-hole hanger plate; 5. a base plate; 6. a blocking plate; 7. and (4) a flange.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the preferred embodiments described herein are for purposes of illustration and understanding only and are not intended to limit the invention.
Embodiment is a low-temperature multi-effect seawater desalination evaporator assembly device
In this embodiment, the expansion part is expanded along the axial direction of the adjustable support rod 2, so that the expansion part and the fixed support rod 1 exert force on the evaporator to adjust the roundness of the circular evaporator or the flatness of the square evaporator. As shown in fig. 1, the present embodiment includes a fixed support rod 1, an adjustable support rod 2 and a telescopic portion, which are sequentially arranged from left to right.
One, expansion part
The telescopic part is used for adjusting the telescopic length of the low-temperature multi-effect seawater desalination evaporator assembly device. The telescopic part can be telescopic along the axial direction of the adjustable supporting rod 2. The telescopic part can adopt an air cylinder, an electric cylinder and a hydraulic cylinder. In this embodiment, the telescopic part is a jack 3. The top plate of the jack 3 is fixedly connected with the adjustable support rod 2, and the base plate of the jack 3 is fixedly connected with a backing plate 5 and is in direct contact with the inner wall of the evaporator through the backing plate 5. In order to avoid polluting the surface of the evaporator with duplex stainless steel in the using process, the handle of the jack 3 and the backing plate 5 on the jack 3 are made of stainless steel.
Two, adjustable supporting rod 2
The adjustable supporting rod 2 can be selected to have different lengths according to the size of the evaporator. The adjustable support rod 2 is made of a carbon steel pipe, and flange blocking plates are fixedly connected to openings at two ends of the adjustable support rod 2. The one end of adjustable support bar 2 can be dismantled and be connected with fixed support bar 1, and the other end of adjustable support bar 2 can be dismantled and be connected with the pars contractilis, and the axis collineation of adjustable support bar 2 and fixed support bar 1. About detachable mode be manifold, like threaded connection, joint, cooperation connection etc. adopt the flange mode in this embodiment, adjustable support rod 2 can dismantle with fixed support rod 1 through flange 7 and be connected, and adjustable support rod 2 can dismantle through flange 7 with the pars contractilis and be connected.
In order to avoid polluting the duplex stainless steel material on the surface of the evaporator in the using process, the outer circumferential surface of the adjustable support rod 2 is coated with a plastic pipe.
Thirdly, fixing the supporting rod 1
The fixed supporting rod 1 is used for conducting force. The fixed support rod 1 is made of a carbon steel pipe. One end of the fixed support rod 1 is detachably connected with the adjustable support rod 2, and the other end opening of the fixed support rod 1 is fixedly connected with a blocking plate 5 so as to block the end opening of the carbon steel pipe through the blocking plate 5. The blocking plate 5 is connected with a backing plate 6 through a screw, so that the backing plate 6 is directly contacted with the inner wall of the evaporator. In order to avoid polluting the duplex stainless steel material on the surface of the evaporator, the outer peripheral surface of the fixed supporting rod 1 is coated with a plastic pipe, and the backing plate 5 is made of stainless steel material.
The fixed support rod 1 is fixedly connected with a single-hole hanging plate 4, and the distance from the single-hole hanging plate 4 to an upper backing plate 5 of the fixed support rod 1 is equal to the distance from the single-hole hanging plate 4 to the upper backing plate 5 of the telescopic part. Therefore, the single-hole hanging plate 4 can be fixed on the inverted chain, and the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the evaporator to change the position of the low-temperature multi-effect seawater desalination evaporator pairing device on the evaporator.
The low-temperature multi-effect seawater desalination evaporator pairing device can be used for adjusting the roundness of a circular evaporator and the flatness of a square evaporator.
The method for adjusting the roundness of the first circular evaporator using the embodiment 1 comprises the steps of:
step 1: the adjustable support rod 2 with the length matched with the diameter of the first circular evaporator is selected to be fixedly connected between the fixed support rod 1 and the telescopic part, namely the adjustable support rod 2 is fixedly connected between the fixed support rod 1 and the jack 3 through the flange 4.
Step 2: the lower semicircle of the first circular evaporator is connected with the lower semicircle of the second circular evaporator by welding
The step (1): the telescopic part is shortened, so that the extension length of the low-temperature multi-effect seawater desalination evaporator pairing device is smaller than the first diameter of the first circular evaporator, and the low-temperature multi-effect seawater desalination evaporator pairing device is placed on the first diameter of the first circular evaporator, namely the axis of the fixed support rod 1, the axis of the adjustable support rod 2 and the extension direction of the jack 3 are collinear with the first diameter of the first circular evaporator.
The extension telescopic part enables the backing plate 5 of the fixed support rod 1 and the backing plate 5 of the telescopic part to be tightly pressed against the inner wall of the first circular evaporator, and the second circular evaporator is provided with a circular diameter corresponding to the diameter of the first circular evaporator, namely, the group to be assembled and the welding point is respectively positioned on the first circular diameter and the first diameter. Observing two points of the first diameter of the low-temperature multi-effect seawater desalination evaporator group pair device, which are positioned on the lower semicircle of the first circular evaporator, and welding the two parallel end points when the first diameter of the first circular evaporator is positioned on the end point of the lower semicircle and the end point of the lower semicircle positioned on the first circle diameter are parallel and level, namely when the requirements of assembly and welding are met.
Step (2): the telescopic part is shortened to enable the low-temperature multi-effect seawater desalination evaporator assembly device to be placed on the Q-th diameter of the first circular evaporator, and the telescopic part is extended to enable the backing plate 5 of the fixed supporting rod and the backing plate 5 of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. Have the Q circle diameter corresponding with first circular evaporator Q circle diameter on the second circular evaporator, first circular evaporator Q circle diameter is located the extreme point of semicircle down and is located the Q circle diameter under when semicircle extreme point parallel and level, links to each other two parallel and level extreme points welding.
Step (3): shorten the pars contractilis and make low temperature multiple-effect seawater desalination evaporator group to put on the Mth diameter of first circular evaporator to the device, first diameter is the symmetric center line of Q th diameter and Mth diameter, and extension pars contractilis makes backing plate 5 of fixed stay bar 1 and the backing plate 5 top of pars contractilis tightly on the inner wall of first circular evaporator. The second circular evaporator is provided with an Mth circular diameter corresponding to the Mth diameter of the first circular evaporator, and when the Mth diameter of the first circular evaporator is positioned at the end point of the lower semicircle and the end point of the lower semicircle positioned at the Mth circular diameter are level, the two level end points are welded and connected; wherein Q is more than 1, and M is more than 1.
And (4) when different values of Q are taken, sequentially placing the low-temperature multi-effect seawater desalination evaporator pairing device on different diameters of a first circular evaporator in a counterclockwise or clockwise direction, wherein in order to better release welding stress, a minimum included angle between a boundary of an upper semicircle and a lower semicircle and a first diameter is α, when different values of Q and M are taken, minimum included angles between a boundary of an upper semicircle and a lower semicircle and a diameter of the Q are both smaller than or equal to α, and the jacking and welding operations in the steps (2) and (3) are repeated, wherein α belongs to (0 degree and 90 degrees).
And step 3: the upper semicircle of the first circular evaporator is welded with the upper semicircle of the second circular evaporator
The step (1): shorten the pars contractilis and make low temperature multiple-effect seawater desalination evaporator group to put on the X diameter of first circular evaporator to the device, the extension pars contractilis makes the backing plate of fixed stay pole and the backing plate top of pars contractilis tight on the inner wall of first circular evaporator, have on the second circular evaporator with the corresponding X circle diameter of first circular evaporator X diameter, first circular evaporator X diameter is located the extreme point of semicircle and is located X circle diameter upper half circle extreme point parallel and level, link to each other two parallel and level extreme point welding.
Step (2): shortening the telescopic part to enable the low-temperature multi-effect seawater desalination evaporator assembly device to be placed on the Kth diameter of the first circular evaporator, enabling the first diameter to be a symmetrical center line of the Xth diameter and the Kth diameter, extending the telescopic part to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator, enabling the second circular evaporator to be provided with the Kth circular diameter corresponding to the Kth diameter of the first circular evaporator, and welding and connecting two parallel and level end points when the Kth diameter of the first circular evaporator is located at the end point of the upper semicircle and the end point of the upper semicircle located at the Kth circular diameter are parallel and level; wherein X is more than 1, and K is more than 1.
And (3) taking different values of X, and sequentially placing the low-temperature multi-effect seawater desalination evaporator pairing device on different diameters of the first circular evaporator in a counterclockwise or clockwise direction, taking different values of X, K, and repeatedly performing jacking and welding operations in the steps (1) and (2), wherein the X diameter and the first diameter form a minimum included angle of β, and the X diameter and the first diameter form a minimum included angle of less than or equal to β, and β belongs to (0 degrees and 90 degrees).
For convenience of use and rapidness of operation, the roundness of the first circular evaporator is further adjusted as follows:
step 0: marking the periphery of the circular evaporator (as a preparatory step)
The step (1): marking points A (0), … …, A (n-1), A (n), B (0), … …, B (n-1) and B (n) are evenly spaced clockwise along the periphery of the first circular evaporator, and a connecting line of the A (0) and the B (0), … …, a connecting line of the A (n-1) and the B (n-1) and a connecting line of the A (n) and the B (n) are all the diameter of the first circular evaporator, wherein n is larger than or equal to 2.
In this embodiment, n = 9. Marking points A (0), A (1), A (2), A (3), A (4), A (5), A (6), A (7), A (8), A (9), B (0), B (1), B (2), B (3), B (4), B (5), B (6), B (7), B (8) and B (9) are evenly and clockwise spaced along the periphery of the first circular evaporator, and the connecting line of A (0) and B (0), the connecting line of A (1) and B (1), the connecting line of A (2) and B (2), the connecting line of A (3) and B (3), the connecting line of A (4) and B (4), the connecting line of A (5) and B (5), the connecting line of A (6) and B (6), the connecting line of A (7) and B (7), the connecting line of A (8) and B (8), and the connecting line of A (9) and B (9) are all the diameters of the first circular evaporator.
The connecting line of A (0) and B (0) is positioned on the vertical line, and the connecting line of A (5) and B (5) is positioned on the boundary line of the upper semicircle and the lower semicircle. Then A (6), A (7), A (8), A (9), B (0), B (1), B (2), B (3), B (4), B (5) are located on the lower semicircle, and the remaining points are on the upper semicircle. Reference is made to the marked points shown on the first circular evaporator in fig. 4.
Step (2): the marks are sequentially and uniformly marked along the periphery of the second circular evaporator at intervals clockwise, and are arranged on the first circular evaporator in a one-to-one correspondence manner, namely a (0), … …, A (n-1), A (n), B (0), … …, B (n-1) and B (n), a (0), … …, a (n-1), a (n), B (0), … …, B (n-1) and B (n).
A (0), a (1), a (2), a (3), a (4), a (5), B (6), B (7), B (8), A (9), B (0), B (1), B (2), B (3), B (4), B (5), B (6), B (7), B (8) and B (9) which are arranged in one-to-one correspondence along the periphery of the second circular evaporator are sequentially and evenly marked at intervals with a (0), a (1), a (2), a (3), a (4), a (5), a (6), a (7), a (8), a (9), B (0), B (1), B (2), B (3), B (4), B (5), B (6), B (7), B (8) and B (9) on the first circular evaporator, the connecting line of a (0) and b (0) is located on the vertical line, and the connecting line of a (5) and b (5) is located on the boundary line of the upper semicircle and the lower semicircle. Reference is made to the marked points shown on the second circular evaporator in fig. 5.
Step 1: the adjustable support rod 2 with the length matched with the diameter of the first circular evaporator is selected to be fixedly connected between the fixed support rod 1 and the jack 3, wherein the matching means that the diameter of the first circular evaporator is between the limit length of the low-temperature multi-effect seawater desalination evaporator group device when the jack 3 extends and the limit length of the jack 3 when the jack 3 shortens.
Step 2: the lower semicircle of the first circular evaporator is connected with the lower semicircle of the second circular evaporator by welding
The step (1): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (0) and B (0), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 1 to be tightly propped against the inner wall of the first circular evaporator. Two circular evaporators were observed, and when point B (0) was flush with point B (0), point B (0) was weld-joined to point B (0).
Step (2): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of the A (1) and the B (1), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. Two circular evaporators were observed, and when point B (1) was flush with point B (1), point B (1) was welded to point B (1).
Step (3): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (9) and B (9), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. Looking at both circular evaporators, when point a (9) is level with point a (9), point a (9) is welded to point a (9).
Step (4): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of the A (2) and the B (2), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. And (5) observing the two circular evaporators, and connecting the point B (2) with the point B (2) in a welding mode when the point B (2) is level with the point B (2).
Step (5): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (8) and B (8), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. Looking at the two circular evaporators, when point a (8) is level with point a (8), point a (8) is welded to point a (8).
Step (6): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (3) and B (3), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. And (5) observing the two circular evaporators, and connecting the point B (3) with the point B (3) in a welding mode when the positions of the point B (3) and the point B (3) are level.
Step (7): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (7) and B (7), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. Looking at both circular evaporators, when point a (7) is level with point a (7), point a (7) is welded to point a (7).
Step (8): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (4) and B (4), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 2 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. And observing the two circular evaporators, and connecting the point B (4) with the point B (4) in a welding mode when the point B (4) is level with the point B (4).
Step (9): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (6) and B (6), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. Looking at both circular evaporators, when point a (6) is level with point a (6), point a (6) is welded to point a (6).
Step (10): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (5) and B (5), and extending the jack 3 to enable the base plate 5 of the fixed supporting rod 1 and the base plate 5 of the jack 3 to be tightly propped against the inner wall of the first circular evaporator. And observing the two circular evaporators, and connecting the point B (5) with the point B (5) in a welding mode when the point B (5) is level with the point B (5).
And step 3: the upper semicircle of the first circular evaporator is welded with the upper semicircle of the second circular evaporator
The step (1): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on a connecting line of A (5) and B (5), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point A (5) is level with the point a (5), welding and connecting the point A (5) with the point a (5).
Step (2): shortening the jack 3, enabling the low-temperature multi-effect seawater desalination evaporator pairing device to rotate around the circumferential center of the first circular evaporator, placing the low-temperature multi-effect seawater desalination evaporator pairing device on a connecting line of A (6) and B (6), extending the telescopic part to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator, and welding and connecting the point B (6) with the point B (6) when the point B (6) is level with the point B (6).
Step (3): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on the connecting line of A (4) and B (4), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point A (4) is level with the point a (4), welding and connecting the point A (4) with the point a (4).
Step (4): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on a connecting line of A (7) and B (7), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point B (7) is level with the point B (7), welding and connecting the point B (7) with the point B (7).
Step (5): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on the connecting line of the A (3) and the B (3), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point A (3) is level with the point a (3), welding and connecting the point A (3) with the point a (3).
Step (6): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on the connecting line of A (8) and B (8), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point B (8) is level with the position of the point B (8) and the point B (8) is level with the position of the point B (8), the point B (8) is connected with the point B (8) in a welding way, and the point B (8) is connected with the point B (8) in a welding way.
Step (7): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on a connecting line of the A (2) and the B (2), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point A (2) is level with the point a (2), welding and connecting the point A (2) with the point a (2).
Step (8): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on a connecting line of A (9) and B (9), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point B (9) is level with the point B (9), welding and connecting the point B (9) with the point B (9).
Step (9): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on a connecting line of the A (1) and the B (1), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. And when the point A (1) is level with the point a (1), welding and connecting the point A (1) with the point a (1).
Step (10): and the jack 3 is shortened, so that the low-temperature multi-effect seawater desalination evaporator pairing device rotates around the center of the circumference of the first circular evaporator, the low-temperature multi-effect seawater desalination evaporator pairing device is placed on a connecting line of A (0) and B (0), and the telescopic part is extended to enable the base plate of the fixed supporting rod and the base plate of the telescopic part to be tightly propped against the inner wall of the first circular evaporator. When the point A (0) is level with the point a (0), the point A (0) is connected with the point a (0) in a welding mode.
After spot welding of the two circular evaporators is completed, the remaining part between the two circular evaporators can be welded.
When the flatness of the square low-temperature multi-effect seawater desalination evaporator is adjusted by using the embodiment 1, the method comprises the following steps:
step 0: mark square evaporator (can be used as preparation work)
The step (1): the bottom plate of the first square evaporator is uniformly marked with points A0、A1、……、A（n-1）、A(n)And point A1And point A2About point A0Symmetry … …, point A（n-1）And point A(n)About point A0Symmetry; on the second square evaporator bottom plate and point A0、A1、……、A（n-1）、A(n)A is marked at the corresponding position0、a1、……、a（n-1）、a(n). Referring to fig. 6, n =14 in the present embodiment.
Step (2): p is uniformly marked on the left side plate or the right side plate of the first square evaporator from the bottom plate to the top plate in sequence0、P1、……、P（m-1）、P(m)The point P is arranged on the left side plate or the right side plate of the second square evaporator0、P1、……、P（m-1）、P(m)At the corresponding position is marked with p0、p1、……、p（m-1）、p(m). Referring to fig. 7, in the present embodiment, m =16 is taken.
Step 1: the bottom plate of the first square evaporator is welded with the bottom plate of the second square evaporator
The step (1): the length of the first adjustable supporting rod is selected to enable the low-temperature multi-effect seawater desalination evaporator pairing device to be suitable for the distance between the top plate and the bottom plate of the first square evaporator, namely the vertical line segment A of the first square evaporator0B0The length of the device is between the limit length of the low-temperature multi-effect seawater desalination evaporator assembly when the jack 3 is extended and the limit length of the jack 3 when the jack is shortened. The first adjustable supporting rod is fixedly connected between the fixed supporting rod 1 and the jack 3 through a flange 4.
Step (2): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator0B0Upper, i.e. the axis of the fixed support bar 1, the axis of the first adjustable support bar and the direction of extension of the jack 3 and the line a0B0And the extension parts are extended to enable the two base plates to be tightly pressed on the top plate and the bottom plate of the first square evaporator.
A vertical line segment A is arranged between the top plate and the bottom plate of the second square evaporator0B0Corresponding vertical line segment a0b0When the point A on the bottom plate of the first square evaporator0And point a on the bottom plate of the second square evaporator0When it is level, point A will be0And point a0Welding; namely, when the two bottom plates meet the assembly welding requirement, the point A on the bottom plate of the first square evaporator is arranged0And point a on the second square evaporator0And (6) welding.
Step (3): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator1B1And the telescopic parts are extended to enable the two base plates to be tightly pressed on the top plate and the bottom plate of the first square evaporator.
A vertical line segment A is arranged between the top plate and the bottom plate of the second square evaporator1B1Corresponding vertical line segment a1b1When the point A on the bottom plate of the first square evaporator1And point a on the bottom plate of the second square evaporator1When it is level, point A will be1And point a1Welding;
step (4): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator2B2Upper, vertical line segment A2B2To the vertical line segment A1B1About vertical line segment A0B0And the two base plates are tightly pressed on the top plate and the bottom plate of the first square evaporator by symmetrically extending the telescopic parts.
A vertical line segment A is arranged between the top plate and the bottom plate of the second square evaporator2B2Corresponding vertical line segment a2b2When the point A on the bottom plate of the first square evaporator2And point a on the bottom plate of the second square evaporator2When it is level, point A will be2And point a2And (6) welding.
……
Step (i-1): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator（n-1）B（n-1）And the telescopic parts are extended to enable the two base plates to be tightly pressed on the top plate and the bottom plate of the first square evaporator.
A vertical line segment A is arranged between the top plate and the bottom plate of the second square evaporator（n-1）B（n-1）Corresponding vertical line segment a（n-1）b（n-1）When the point A on the bottom plate of the first square evaporator（n-1）And point a on the bottom plate of the second square evaporator（n-1）When it is level, point A will be（n-1）And point a（n-1）And (6) welding.
Step (i): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator（n）B（n）Upper, vertical line segment A（n）B（n）To the vertical line segment A（n-1）B（n-1）About vertical line segment A0B0And the two base plates are tightly pressed on the top plate and the bottom plate of the first square evaporator by symmetrically extending the telescopic parts.
A vertical line segment A is arranged between the top plate and the bottom plate of the second square evaporator（n）B（n）Corresponding vertical line segment a（n）b（n）When point A on the first square evaporator floor（n）And point a on the second square evaporator（n）When it is level, point A will be（n）And point a（n）And (6) welding.
Wherein n is more than or equal to 2, and i = n + 2.
Step 2: the left side plate of the first square evaporator is connected with the left side plate of the second square evaporator in a welding way, and the right side plate of the first square evaporator is connected with the right side plate of the second square evaporator in a welding way
The step (1): selecting the length of the second adjustable supporting rod to enable the low-temperature multi-effect seawater desalination evaporator pairing device to be suitable for the distance between the left side plate and the right side plate of the first square evaporator; and fixedly connecting the selected second adjustable supporting rod between the fixed supporting rod 1 and the telescopic part.
Step (2): the telescopic part is shortened to ensure that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged at a vertical line section P between the left side plate and the right side plate of the first square evaporator0Q0And the telescopic parts are extended to enable the two base plates to be tightly pressed against the left side plate and the right side plate of the first square evaporator.
A section P corresponding to the vertical line is arranged between the left side plate and the right side plate of the second square evaporator0Q0Corresponding perpendicular segment p0q0When point P is0And point p0Flush or point Q0And point q0When the two points are level, the two points are welded and connected; continuing to extend the extension part as the vertical line segment P0Q0Unwelded end point and vertical line segment p0q0And when the unwelded end points are flush, welding and connecting the two flush end points. For example, if point P on the left side plate of the first square evaporator0And a point p of a left side plate of a second square evaporator0First flush, two points (point P) of flush0And point p0) Welded together, with a vertical segment P0Q0Point Q0And point q0Not welding; continuing to extend the telescoping section as point Q on the right side plate of the first square evaporator0And point q on the right side plate of the second square evaporator0When flush, the two flush end points (point Q)0And point q0) And (5) welding and connecting. If point Q on the right side plate of the first square evaporator0And point q on the right side plate of the second square evaporator0Flush first, the two flush end points (point Q)0And point q0) Welded to each other and continuing to extend the telescoping section as point P on the left side plate of the first square evaporator0And a point p of a left side plate of a second square evaporator0Level, two points (point P) to be level0And point p0) And (5) welding and connecting.
Step (3): the telescopic part is shortened to ensure that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged at a vertical line section P between the left side plate and the right side plate of the first square evaporator1Q1Upper and perpendicular to the line segment P1Q1Large distance to the bottom plateIn the vertical line segment P0Q0And the distance from the bottom plate to the bottom plate, the telescopic part is extended to enable the two base plates to be tightly pressed against the left side plate and the right side plate of the first square evaporator.
A section P corresponding to the vertical line is arranged between the left side plate and the right side plate of the second square evaporator1Q1Corresponding perpendicular segment p1q1When point P is1And point p1Flush or point Q1And point q1When the two points are level, the two points are welded and connected; continuing to extend the extension part as the vertical line segment P1Q1Unwelded end point and vertical line segment p1q1And when the unwelded end points are flush, welding and connecting the two flush end points.
……
The (j-1) step: the telescopic part is shortened to ensure that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged at a vertical line section P between the left side plate and the right side plate of the first square evaporator（m-1）Q（m-1）Upper and perpendicular to the line segment P（m-1）Q（m-1）The distance to the bottom plate is greater than the vertical line segment P（m-2）Q（m-2）And the distance from the bottom plate to the bottom plate, the telescopic part is extended to enable the two base plates to be tightly pressed against the left side plate and the right side plate of the first square evaporator.
A section P corresponding to the vertical line is arranged between the left side plate and the right side plate of the second square evaporator（m-1）Q（m-1）Corresponding perpendicular segment p（m-1）q（m-1）When point P is（m-1）And point p（m-1）Flush or point Q（m-1）And point q（m-1）When the two points are level, the two points are welded and connected; continuing to extend the extension part as the vertical line segment P（m-1）Q（m-1）Unwelded end point and vertical line segment p（m-1）q（m-1）And when the unwelded end points are flush, welding and connecting the two flush end points.
The (j) step: the telescopic part is shortened to ensure that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged at a vertical line section P between the left side plate and the right side plate of the first square evaporator（m）Q（m）Upper and perpendicular to the line segment P（m）Q（m）The distance to the bottom plate is greater than the vertical line segment P（m-1）Q（m-1）And the distance from the bottom plate to the bottom plate, the telescopic part is extended to enable the two base plates to be tightly pressed against the left side plate and the right side plate of the first square evaporator.
A section P corresponding to the vertical line is arranged between the left side plate and the right side plate of the second square evaporator（m）Q（m）Corresponding perpendicular segment p（m）q（m）When point P is（m）And point p（m）Flush or point Q（m）And point q（m）When the two points are level, the two points are welded and connected; continuing to extend the extension part as the vertical line segment P（m）Q（m）Unwelded end point and vertical line segment p（m）q（m）When the unwelded end points are level, the two level end points are welded and connected; wherein m is more than or equal to 2, and j = m + 2.
And step 3: the top plate of the first square evaporator is connected with the top plate of the second square evaporator in a welding way
The step (1): and the first adjustable supporting rod is fixedly connected between the fixed supporting rod and the telescopic part.
Step (2): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator0B0The extension part extends the two base plates to tightly press the top plate and the bottom plate of the first square evaporator, and when the point B on the top plate of the first square evaporator0And point b on the top plate of the second square evaporator0When it is level, point B is put0And point b0And (6) welding.
Step (3): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator1B1The extension part extends the two base plates to tightly press the top plate and the bottom plate of the first square evaporator, and when the point B on the top plate of the first square evaporator1And point b on the top plate of the second square evaporator1When it is level, point B is put1And point b1And (6) welding.
Step (4): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator2B2In the above-mentioned manner,vertical line segment A2B2To the vertical line segment A1B1About vertical line segment A0B0Symmetrically, extending the telescoping portions causes the two pads to abut against the top and bottom plates of the first square evaporator at point B on the top plate of the first square evaporator2And point b on the top plate of the second square evaporator2When it is level, point B is put2And point b2And (6) welding.
……
Step (i-1): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator（n-1）B（n-1）The extension part extends the two base plates to tightly press the top plate and the bottom plate of the first square evaporator, and when the point B on the top plate of the first square evaporator（n-1）And point b on the top plate of the second square evaporator（n-1）When it is level, point B is put（n-1）And point b on the second square evaporator（n-1）Welding;
step (i): the telescopic part is shortened so that the low-temperature multi-effect seawater desalination evaporator assembly device is arranged in a vertical line section A between a top plate and a bottom plate of the first square evaporator（n）B（n）The extension part extends the two base plates to tightly press the top plate and the bottom plate of the first square evaporator, and when the point B on the top plate of the first square evaporator（n）And point b on the top plate of the second square evaporator（n）When it is level, point B is put（n）And point b（n）Welding; wherein n is more than or equal to 2, and i = n + 2.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A low-temperature multi-effect seawater desalination evaporator set pair device is characterized in that: comprises a fixed support rod, an adjustable support rod and a telescopic part which are arranged in sequence; the adjustable support rod is detachably connected between the fixed support rod and the telescopic part, and the telescopic part can stretch along the axial direction of the adjustable support rod; the opening parts of the fixed supporting rod and the adjustable supporting rod are fixedly connected with blocking plates, and backing plates which are in contact with the inner wall of the evaporator are fixed on the fixed supporting rod and the telescopic part.
2. The low-temperature multi-effect seawater desalination evaporator set pair device as defined in claim 1, wherein: the fixed support rod is fixedly connected with a single-hole hanging plate, and the distance from the single-hole hanging plate to the upper base plate of the fixed support rod is equal to the distance from the single-hole hanging plate to the upper base plate of the telescopic part.
3. The low-temperature multi-effect seawater desalination evaporator set pair device as defined in claim 2, wherein: the adjustable support rod is detachably connected with the fixed support rod through a flange, and the adjustable support rod is detachably connected with the telescopic part through a flange.
4. The low-temperature multi-effect seawater desalination evaporator set pair device as defined in claim 3, wherein: the telescopic part is a jack.
5. The low-temperature multi-effect seawater desalination evaporator set pair device as defined in claim 4, wherein: the fixed support rod and the adjustable support rod are carbon steel tubes with plastic tubes wrapped on the outer surfaces, and the blocking plates on the fixed support rod and the telescopic portion are made of stainless steel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110316776A (en) * | 2019-06-28 | 2019-10-11 | 中国电建集团河北工程有限公司 | Low-temperature multiple-effect seawater desalination evaporator pairing device and its application |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316776A (en) * | 2019-06-28 | 2019-10-11 | 中国电建集团河北工程有限公司 | Low-temperature multiple-effect seawater desalination evaporator pairing device and its application |
| CN110316776B (en) * | 2019-06-28 | 2024-06-07 | 中国电建集团河北工程有限公司 | Low-temperature multi-effect seawater desalination evaporator pairing device and application thereof |
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